Specifications (2) RECEIVED
OCT 10 2013
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CITY OF TIGARD
ILDING DIVISION
M A R K E T FOODS
85% Permit Documents
Project Specifications
WHOLE FOODS MARKET
TENANT IMPROVEMENT
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Greenway Town Centerty of Tigard-
Tigard, Oregon Approved Plans
By Date 1( 1« 1(,
October 4, 2013 (2220S�SCHc ei_S F. '
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OFFICE COPY
Cushing Terrell, Architects Engineers CUSHING
200 West Mercer Street, Suite 503
Seattle, Washington 98119 • TERRELL
Ph: (206) 282-6222
ARCHITECTS ENGINEER S
Fax: (206) 282-7350
WHOLE FOODS MARKET-GREENWAY TOWN CENTER WFGNW
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TIGARD, OREGON
TABLE OF CONTENTS
LEGAL AND PROCEDURAL REQUIREMENTS PAGES
INVITATION TO BID 1
INSTRUCTIONS TO BIDDERS 1 -5
SUPPLEMENTAL INSTRUCTIONS TO BIDDERS 1 - 2
SUBSTITUTION REQUEST FORM 1
TECHNICAL SPECIFICATIONS PAGES
DIVISION 01 -GENERAL REQUIREMENTS
011000 SUMMARY 1 -6
011200 MULTIPLE CONTRACT SUMMARY 1 -4
012300 ALTERNATES 1 - 2
012600 CONTRACT MODIFICATION PROCEDURES 1 -3
012900 PAYMENT PROCEDURES 1 -3
013100 PROJECT MANAGEMENT AND COORDINATION 1 - 7
013200 CONSTRUCTION PROGRESS DOCUMENTATION 1 - 5
013300 SUBMITTAL PROCEDURES 1 - 8
014000 QUALITY REQUIREMENTS 1 -6
014200 REFERENCES 1 -2
015000 TEMPORARY FACILITIES AND CONTROLS 1 -6
015719 ENVIRONMENTAL PROTECTION AND EMERGENCY PLAN 1 - 27
016000 PRODUCT REQUIREMENTS 1 - 6
017300 EXECUTION 1 -5
017329 CUTTING AND PATCHING 1 -4
017419 CONSTRUCTION WASTE MANAGEMENT AND DISPOSAL 1 - 6
017700 CLOSEOUT PROCEDURES 1 -5
017823 OPERATION AND MAINTENANCE DATA 1 -4
017839 PROJECT RECORD DOCUMENTS 1 -3
017900 DEMONSTRATION AND TRAINING 1 - 3
018113.13 SUSTAINABLE DESIGN REQUIREMENTS-GREEN GLOBES FOR NEW
CONSTRUCTION 1 -4
DIVISION 02-EXISTING CONDITIONS
024119 SELECTIVE STRUCTURE DEMOLITION 1 - 5
DIVISION 03-CONCRETE
033000 CAST-IN-PLACE CONCRETE 1 -9
033600 SPECIAL CONCRETE FLOOR FINISHES 1 - 5
DIVISION 05-METALS
055213 PIPE AND TUBE RAILINGS 1 - 5
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DIVISION 06-WOOD,PLASTICS,AND COMPOSITES
061000 ROUGH CARPENTRY 1 - 5
062023 INTERIOR FINISH CARPENTRY 1 - 5
064113 WOOD-VENEER-FACED ARCHITECTURAL CABINETS 1 -7
064116 PLASTIC-LAMINATE-FACED ARCHITECTURAL CABINETS 1 - 7
066400 PLASTIC PANELING 1 -3
DIVISION 07-THERMAL AND MOISTURE PROTECTION
071326 SELF-ADHERING SHEET WATERPROOFING 1 - 3
072100 THERMAL INSULATION 1 - 5
076200 SHEET METAL FLASHING AND TRIM 1 -6
077200 ROOF ACCESSORIES 1 -4
079200 JOINT SEALANTS 1 -9
DIVISION 08-OPENINGS
081113 HOLLOW METAL DOORS AND FRAMES 1 -7
081416 FLUSH WOOD DOORS 1 -5
083819 RIGID TRAFFIC DOORS 1 -2
084113 ALUMINUM-FRAMED ENTRANCES AND STOREFRONTS 1 - 8
084229 AUTOMATIC ENTRANCES 1 - 12
087100 DOOR HARDWARE 1 - 12
088000 GLAZING 1 -6
DIVISION 09-FINISHES
092216 NON-STRUCTURAL METAL FRAMING 1 -6
092900 GYPSUM BOARD 1 -6
093000 TILING 1 -5
095113 ACOUSTICAL PANEL CEILINGS 1 -5
096513 RESILIENT BASE AND ACCESSORIES 1 -3
096723 RESINOUS FLOORING 1 -5
099123 INTERIOR PAINTING 1 -7
099300 STAINING AND TRANSPARENT FINISHING 1 - 5
DIVISION 10-SPECIALTIES
101100 VISUAL DISPLAY SURFACES 1 -4
101400 SIGNAGE 1 - 3
102113 TOILET COMPARTMENTS 1 -4
102600 WALL AND DOOR PROTECTION 1 -3
102800 TOILET, BATH, AND LAUNDRY ACCESSORIES 1 - 5
104413 FIRE EXTINGUISHER CABINETS 1 -3
104416 FIRE EXTINGUISHERS - 1 -3
DIVISION 12-FURNISHINGS
122413 -ROLLER WINDOW SHADES 1 -4
123661 - SIMULATED STONE COUNTERTOPS 1 -3
DIVISION 21 - FIRE SUPPRESSION
211100 FACILITY FIRE-SUPPRESSION WATER-SERVICE PIPING 1 - 7
211313 WET-PIPE SPRINKLER SYSTEMS 1 - 18
211316 DRY-PIPE SPRINKLER SYSTEMS 1 - 16
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DIVISION 22-PLUMBING
221116 DOMESTIC WATER PIPING 1 -6
221119 DOMESTIC WATER PIPING SPECIALTIES 1 -9
221123 DOMESTIC WATER PUMPS 1 -4
221316 SANITARY WASTE AND VENT PIPING 1 - 8
221319 SANITARY WASTE PIPING SPECIALTIES 1 -7
223400 FUEL-FIRED DOMESTIC WATER HEATERS 1 -6
224000 PLUMBING FIXTURES 1 - 15
DIVISION 23-HEATING VENTILATING AND AIR CONDITIONING
230500 COMMON WORK RESULTS FOR PLUMBING AND HVAC 1 - 11
230513 COMMON MOTOR REQUIREMENTS FOR HVAC EQUIPMENT 1 -6
230519 METERS AND GAGES FOR PLUMBING PIPING 1 -4
230523 GENERAL-DUTY VALVES FOR PLUMBING PIPING 1 - 6
230529 HANGERS AND SUPPORTS FOR PLUMBING PIPING AND
EQUIPMENT 1 - 8
230548 VIBRATION AND SEISMIC CONTROLS FOR PLUMBING AND
HVAC PIPING AND EQUIPMENT 1 -9
230553 IDENTIFICATION FOR PLUMBING AND HVAC PIPING AND EQUIPMENT 1 -4
230593 TESTING,ADJUSTING,AND BALANCING FOR HVAC 1 -5
230700 HVAC INSULATION 1 - 11
230993 SEQUENCE OF OPERATIONS FOR HVAC CONTROLS 1 - 5
231123 FACILITY NATURAL-GAS PIPING 1 -9
233113 METAL DUCTS 1 - 14
233300 AIR DUCT ACCESSORIES 1 -9
233423 HVAC POWER VENTILATORS I - 7
233713 DIFFUSERS, REGISTERS,AND GRILLES 1 -3
233813 COMMERCIAL-KITCHEN HOODS 1 - 8
235100 BREECHINGS,CHIMNEYS,AND STACKS 1 -3
235523 GAS-FIRED RADIANT HEATERS 1 -4
235533 FUEL-FIRED UNIT HEATERS 1 -4
236395 REFRIGERATION INSTALLATION 1 -48
237400 PACKAGED OUTDOOR HVAC EQUIPMENT 1 -6
237433 DEDICATED OUTDOOR-AIR UNITS 1 - 10
238126 SPLIT-SYSTEM AIR-CONDITIONERS 1 -4
238315 QUARTZ ELECTRIC INFRARED HEATERS 1 -2
DIVISION 26-ELECTRICAL
260500 COMMON WORK RESULTS FOR ELECTRICAL 1 - 3
260519 LOW-VOLTAGE ELECTRICAL POWER CONDUCTORS AND CABLES 1 - 5
260526 GROUNDING AND BONDING FOR ELECTRICAL SYSTEMS 1 - 3
260529 HANGERS AND SUPPORTS FOR ELECTRICAL SYSTEMS 1 - 5
260533 RACEWAY AND BOXES FOR ELECTRICAL SYSTEMS 1 - 7
260553 IDENTIFICATION FOR ELECTRICAL SYSTEMS 1 - 7
260573 OVERCURRENT PROTECTIVE DEVICE COORDINATION AND
ARC FLASH STUDY 1 - 8
260943 NETWORK LIGHTING CONTROLS 1 - 5
262200 LOW-VOLTAGE TRANSFORMERS 1 -4
262413 SWITCHBOARDS 1 -6
262416 PANELBOARDS 1 - 7
262726 WIRING DEVICES 1 - 6
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262813 FUSES 1 -3
262816 ENCLOSED SWITCHES AND CIRCUIT BREAKERS 1 -5
262913 ENCLOSED CONTROLLERS 1 -7
265100 INTERIOR LIGHTING 1 -7
DIVISION 28-ELECTRICAL SAFETY AND SECURITY
283111 DIGITAL,ADDRESSABLE FIRE-ALARM SYSTEM 1 - 8
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SECTION 230500-COMMON WORK RESULTS FOR PLUMBING AND HVAC
PART 1 -GENERAL
1.1 RELATED DOCUMENTS
A. Drawings and general provisions of the Contract, including General and Supplementary
Conditions and Division 01 Specification Sections,apply to this Section.
1.2 SUMMARY
A. This Section includes the following:
1. Record Documents,Maintenance Manuals,and General Provisions for mechanical work.
2. Piping materials and installation instructions common to most piping systems.
3. Transition fittings.
4. Dielectric fittings.
5. Mechanical sleeve seals.
6. Sleeves.
7. Escutcheons.
8. Mechanical demolition.
9. Equipment installation requirements common to equipment sections.
10. Painting and finishing.
11. Concrete bases.
12. Supports and anchorages.
1.3 SUBMITTALS
A. Product Data: For the following:
1. Dielectric fittings.
2. Mechanical sleeve seals.
3. Escutcheons.
B. Welding certificates.
1.4 QUALITY ASSURANCE
A. Steel Support Welding: Qualify processes and operators according to AWS D1.1, "Structural
Welding Code--Steel."
B. Steel Pipe Welding: Qualify processes and operators according to ASME Boiler and Pressure
Vessel Code: Section IX,"Welding and Brazing Qualifications."
1. Comply with provisions in ASME B31 Series,"Code for Pressure Piping."
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2. Certify that each welder has passed AWS qualification tests for welding processes
involved and that certification is current.
C. Electrical Characteristics for Mechanical Equipment: Equipment of higher electrical
characteristics may be furnished provided such proposed equipment is approved in writing by
the engineer and connecting electrical services, circuit breakers, and conduit sizes are
appropriately modified without added cost to Project. If minimum energy ratings or efficiencies
are specified,equipment shall comply with requirements.
1.5 COORDINATION
A. Arrange for pipe spaces, chases, slots, and openings in building structure during progress of
construction,to allow for mechanical installations.
B. Coordinate installation of required supporting devices and set sleeves in poured-in-place
concrete and other structural components as they are constructed.
C. Coordinate requirements for access panels and doors for mechanical items requiring access that
are concealed behind finished surfaces. Access panels and doors are specified in Division 08
Section"Access Doors and Frames."
1.6 FEES AND PERMITS
A. Contractor shall apply and pay for all permits, inspections, reviews, etc. required by the
authorities having jurisdiction.
1. This shall include the cost of extending the natural gas service from the utility company
main line to the building meter, setting the meter and regulator and all related utility
- company costs.
2. The Contractor shall include in his/her Bid all system development or similarly named
fee imposed by the serving utility company or governing entity(City,County,etc.).
1.7 RECORD DOCUMENTS
A. Prepare Record Documents in accordance with the requirements in Division 01 Section"Project
Closeout." In addition to the requirements specified in Division 01, indicate the following
installed conditions:
1. Ductwork mains and branches, size and location,for both exterior and interior; locations
of dampers and other control devices; filters,boxes,and terminal units requiring periodic
maintenance or repair.
2. Mains and branches of piping systems, with valves and control devices located and
numbered, concealed unions located, and with items requiring maintenance located (ie.
traps, strainers, tanks, etc.). Refer to Section 230553 "Identification for HVAC Piping
and Equipment". Indicate actual inverts and horizontal locations of underground piping.
3. Equipment locations (exposed and concealed) dimensioned from prominent building
lines.
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4. Approved substitutions, Contract Modifications, and actual equipment and materials
installed. Revise equipment schedules.
5. Contract Modifications,actual equipment and materials installed.
1.8 MAINTENANCE MANUALS
A. Prepare maintenance manuals in accordance with Division 01 Section "Project Closeout." In
addition to the requirements specified in Division 01. Assemble 0&M Manuals as follows:
1 1. Compile three copies of Operating and Maintenance Manuals for the mechanical systems
i and equipment. The manuals shall be provided to the Architect for approval complete
and at one time, prior to requesting final payment. Partial or separate data will be
returned for completion.
2. Manuals shall be assembled in three-ring binders. Binders shall be 3 inches thick or less
and more than one binder shall be used for each set of data if required to prevent
overfilling of one binder. Binders shall have plastic coating with correct name of the
Project permanently attached to the spine. Binders shall be Sparco, #68031. All
information shall be arranged in sections and each section shall have a blank buff
colored, heavy paper divider with a protruding tab clearly labeled. Sections shall be -
arranged in the same order that the equipment is listed in the Specification and each
Specification Section shall have a separate tab. Shop Drawings which are larger than
8-1/2 inches x 11 inches shall be individually folded so they are 8-1/2 inches x 11 inches
or less and inserted behind the appropriate tab.
3. Tabs shall be labeled and arranged as follows:
a. Index: Furnish under the first tab an index of sections listing name of Section and
Specification numbers.
b. Equipment Manufacturers: Furnish under the second tab a complete typed list of
equipment suppliers and manufacturers representative including type of
equipment,name, address and phone number. The company listed here should be
the one which could furnish replacement parts and offer technical information
about the equipment.
c. Valve Directory: Furnish under this tab a typed copy of the valve chart required.
d. Product Literature: Each tab, starting with the fourth shall contain the name of a
Specification Section. Behind each tab shall be the previously submitted and
approved Shop Drawing,factory published operation and maintenance instructions
and parts lists.
4. Upon completion and approval of the booklets, one copy shall be given to the Architect,
and two to the Owner. Using the booklet, the Mechanical Contractor shall explain in _
detail and instruct the Owner's operating personnel in the correct operation and
maintenance of the equipment.
1.9 GENERAL PROVISIONS FOR MECHANICAL WORK
A. Interferences: Project design took into account potential interferences between trades (e.g.
mechanical ductwork with piping or with electrical light fixtures), however, not every
interference has been eliminated. It shall be the responsibility of the Bidder and potential
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Contractor to field verify all mechanical piping and duct routing, making allowances for
existing beams,pipes, ducts,hangers, and other obstructions. Provide HVAC duct offsets and
transitions as required maintaining duct aspect ratios within 10 percent of design. The cost
associated with interferences shall be included in the Base Bid.
B. Examination of Project Drawings:
1. The Drawings (Plans, elevations, flow schematics, etc.) for the mechanical work are
intended to convey Scope of Work and to indicate the general arrangements and locations
of end-use equipment,systems,etc.,and the approximate sizes thereof.
2. The Contractor shall determine the exact location and mounting heights of equipment,
rough-ins, and the exact routing and positioning of piping/ductwork equipment so as to
best fit the layout of the job. Scaling of the Drawings will not be sufficient for
determining these locations. Where job conditions require reasonable changes in
indicated arrangements and locations, such changes shall be made, by the Contractor, at
no additional cost to the Client.
3. Because of the scale of the Drawings,certain basic items/materials and quantities thereof,
(e.g. fittings,connectors,flanges,unions,pipe wells,couplings,hangers,sleeves,clamps,
screws, hooks, inserts, pipe/duct mounted - meters, gauges, sensors, etc.) may not be
shown,but where such items are required by other sections of the Specifications or where
they are required for proper installation of the Work, such items shall be furnished and
installed and the cost thereof,reflected in the Base Bid.
4. The determination of quantities of HVAC and plumbing end-use systems and equipment
required shall be made by the Contractor from the Drawings. Interferences and quantities
and locations of basic items/materials may not be indicated on the Drawings and will
require field verification and determination by the Contractor.
5. The Contractor shall coordinate the location and method of support of the piping/duct
systems with that of all installations under other Divisions and Sections of the
Specifications.
PART 2-PRODUCTS
2.1 MANUFACTURERS
A. In other Part 2 articles where subparagraph titles below introduce lists, the following
requirements apply for product selection:
1. Available Manufacturers: Subject to compliance with requirements, manufacturers
offering products that may be incorporated into the Work include,but are not limited to,
the manufacturers specified.
2.2 PIPE,TUBE,AND FITTINGS
A. Refer to individual Division 23 piping Sections for pipe, tube, and fitting materials and joining
methods.
B. Pipe Threads: ASME B 1.20.1 for factory-threaded pipe and pipe fittings.
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2.3 JOINING MATERIALS
A. Refer to individual Division 23 piping Sections for special joining materials not listed below.
B. Pipe-Flange Gasket Materials: Suitable for chemical and thermal conditions of piping system
contents.
1. ASME B16.21, nonmetallic, flat, asbestos-free, 1/8-inch maximum thickness unless
thickness or specific material is indicated.
a. Full-Face Type: For flat-face,Class 125,cast-iron and cast-bronze flanges.
b. Narrow-Face Type: For raised-face,Class 250,cast-iron and steel flanges.
2. AWWA C110, rubber,flat face, 1/8-inch thick,unless otherwise indicated; and full-face
or ring type,unless otherwise indicated.
C. Flange Bolts and Nuts: ASME B18.2.1,carbon steel,unless otherwise indicated.
D. Plastic, Pipe-Flange Gasket, Bolts, and Nuts: Type and material recommended by piping
system manufacturer,unless otherwise indicated.
E. Solder Filler Metals: ASTM B 32, lead-free alloys. Include water-flushable flux according to
ASTM B813.
F. Brazing Filler Metals: AWS A5.8, BcuP Series, copper-phosphorus alloys for general-duty
brazing, unless otherwise indicated; and AWS A5.8, BAgl, silver alloy for refrigerant piping,
unless otherwise indicated.
G. Welding Filler Metals: Comply with AWS D10.12 for welding materials appropriate for wall
thickness and chemical analysis of steel pipe being welded.
H. Solvent Cements for Joining Plastic Piping:
1. ABS Piping: ASTM D 2235.
2. CPVC Piping: ASTM F 493.
3. PVC Piping: ASTM D 2564. Include primer according to ASTM F 656.
4. PVC to ABS Piping Transition: ASTM D 3138.
I. Fiberglass Pipe Adhesive: As furnished or recommended by pipe manufacturer.
2.4 TRANSITION FITTINGS
A. Plastic-to-Metal Transition Fittings: PVC one-piece fitting with manufacturer's Schedule 80
equivalent dimensions;one end with threaded brass insert,and one solvent-cement-joint end.
B. Plastic-to-Metal Transition Adaptors: One-piece fitting with manufacturer's SDR 11 equivalent
dimensions;one end with threaded brass insert,and one solvent-cement-joint end.
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C. Plastic-to-Metal Transition Unions: MSS SP-107, PVC four-part union. Include brass end,
solvent-cement-joint end,rubber 0-ring,and union nut.
2.5 DIELECTRIC FITTINGS
A. Description: Combination fitting of copper alloy and ferrous materials with threaded, solder-
joint,plain,or weld-neck end connections that match piping system materials.
B. Insulating Material: Suitable for system fluid,pressure,and temperature.
C. Dielectric Unions: Factory-fabricated, union assembly, for 250 psig minimum working
pressure at 180 deg F.
D. Dielectric Flanges: Factory-fabricated, companion-flange assembly, for 150 or 300 psig
minimum working pressure as required to suit system pressures.
E. Dielectric-Flange Kits: Companion-flange assembly for field assembly. Include flanges, full-
face-or ring-type neoprene or phenolic gasket, phenolic or polyethylene bolt sleeves, phenolic
washers,and steel backing washers.
1. Separate companion flanges and steel bolts and nuts shall have 150 or 300 psig minimum
working pressure where required to suit system pressures.
F. Dielectric Couplings: Galvanized-steel coupling with inert and noncorrosive, thermoplastic
lining;threaded ends;and 300 psig minimum working pressure at 225 deg F.
G. Dielectric Nipples: Electroplated steel nipple with inert and noncorrosive,thermoplastic lining;
plain,threaded,or grooved ends;and 300 psig minimum working pressure at 225 deg F.
2.6 MECHANICAL SLEEVE SEALS
A. Description: Modular sealing element unit, designed for field assembly, to fill annular space
between pipe and sleeve.
1. Manufacturers:
a. Advance Products& Systems,Inc.
b. Calpico,Inc.
c. Metraflex Co.
d. Pipeline Seal and Insulator,Inc.
2. Sealing Elements: EPDM interlocking links shaped to fit surface of pipe. Include type
and number required for pipe material and size of pipe.
3. Pressure Plates: Plastic or carbon steel. Include two for each sealing element.
4. Connecting Bolts and Nuts: Carbon steel with corrosion-resistant coating of length
required to secure pressure plates to sealing elements. Include one for each sealing
element.
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2.7 SLEEVES
A. Galvanized-Steel Sheet: 0.0239-inch minimum thickness; round tube closed with welded
longitudinal joint.
B. Steel Pipe: ASTM A 53,Type E,Grade B, Schedule 40,galvanized,plain ends.
C. Cast Iron: Cast or fabricated "wall pipe" equivalent to ductile-iron pressure pipe, with plain
ends and integral waterstop,unless otherwise indicated.
D. Stack Sleeve Fittings: Manufactured, cast-iron sleeve with integral clamping flange. Include
clamping ring and bolts and nuts for membrane flashing.
1. Underdeck Clamp: Clamping ring with set screws.
2.8 ESCUTCHEONS
A. Description: Manufactured wall and ceiling escutcheons and floor plates, with an ID to closely
fit around pipe, tube, and insulation of insulated piping and an OD that completely covers
opening.
B. One-Piece, Deep-Pattern Type: Deep-drawn, box-shaped brass with polished chrome-plated
finish.
1. One-Piece,Cast-Brass Type: With set screw and polished chrome-plated.
C. Split-Plate,Cast-Brass or Stamped-Steel Type: With concealed hinge,spring clips and chrome-
plated finish.
D. Split-Casting,Floor-Plate Type: Cast brass with concealed hinge and set screw.
PART 3 -EXECUTION
3.1 PIPING SYSTEMS-COMMON REQUIREMENTS
A. Drawing Plans, schematics, and diagrams indicate general location and arrangement of piping
systems. Indicated locations and arrangements were used to size pipe and calculate friction
loss,expansion,pump sizing,and other design considerations. Install piping as indicated unless
deviations to layout are approved on Coordination Drawings.
B. Install piping in concealed locations,unless otherwise indicated and except in equipment rooms
and service areas.
C. Install piping indicated to be exposed and piping in equipment rooms and service areas at right
angles or parallel to building walls. Diagonal runs are prohibited unless specifically indicated
otherwise.
D. Install piping above accessible ceilings to allow sufficient space for ceiling panel removal.
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E. Install piping to permit valve servicing.
F. Install piping at indicated slopes.
G. Install piping free of sags and bends.
H. Install fittings for changes in direction and branch connections.
I. Install piping to allow application of insulation.
J. Select system components with pressure rating equal to or greater than system operating
pressure.
K. Install escutcheons for penetrations of walls,ceilings,and floors according to the following:
1. New Piping:
a. Piping with Fitting or Sleeve Protruding from Wall: One-piece,deep-pattern type.
b. Chrome-Plated Piping: One-piece, cast-brass type with polished chrome-plated
finish.
c. Insulated Piping: One-piece,stamped-steel type with spring clips.
d. Bare Piping at Wall and Floor Penetrations in Finished Spaces: One-piece, cast-
brass type with polished chrome-plated finish.
e. Bare Piping at Ceiling Penetrations in Finished Spaces: One-piece cast-brass type
with polished chrome-plated finish.
f. Bare Piping in Unfinished Service Spaces: Split plate, cast-brass or stamped steel
type with polished chrome-plated finish.
2. Existing Piping: Use the following:
a. Chrome-Plated Piping: Split-plate,cast-brass type with chrome-plated finish.
b. Insulated Piping: Split-plate, stamped-steel type with concealed hinge and spring
clips.
c. Bare Piping at Wall and Floor Penetrations in Finished Spaces: Split-plate, cast
brass or stamped-steel type with concealed hinge and spring clips.
d. Bare Piping at Ceiling Penetrations in Finished or Unfinished Spaces: Split-plate,
cast-brass or stamped-steel type with concealed hinge and set screw.
L. Sleeves are not required for core-drilled holes.
M. Install sleeves for pipes passing through concrete and masonry walls and concrete floor and roof
— slabs.
1. Cut sleeves to length for mounting flush with both surfaces.
a. Exception: Extend sleeves installed in floors of mechanical equipment areas or
other wet areas 2 inches above finished floor level. Extend cast-iron sleeve fittings
below floor slab as required to secure clamping ring if ring is specified.
2. Install sleeves in new walls and slabs as new walls and slabs are constructed.
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3. Install sleeves that are large enough to provide 1/4-inch annular clear space between
sleeve and pipe or pipe insulation. Use the following sleeve materials:
a. Steel Pipe Sleeves: For pipes smaller than NPS 6.
b. Steel Sheet Sleeves: For pipes NPS 6 and larger.
c. Stack Sleeve Fittings: For pipes penetrating floors with membrane waterproofing.
Secure flashing between clamping flanges. Install section of cast-iron soil pipe to
extend sleeve to 2 inches above finished floor level. Refer to Division 07 Section
"Sheet Metal Flashing and Trim"for flashing.
4. Except for underground wall penetrations,seal annular space between sleeve and pipe or
pipe insulation,using joint sealants appropriate for size,depth,and location of joint.
N. Aboveground,Exterior-Wall Pipe Penetrations: Seal penetrations using sleeves and mechanical
sleeve seals. Select sleeve size to allow for 1 inch annular clear space between pipe and sleeve
for installing mechanical sleeve seals.
1. Install steel pipe for sleeves smaller than 6 inches in diameter.
2. Install cast-iron"wall pipes" for sleeves 6 inches and larger in diameter.
3. Mechanical Sleeve Seal Installation: Select type and number of sealing elements
required for pipe material and size. Position pipe in center of sleeve. Assemble
mechanical sleeve seals and install in annular space between pipe and sleeve. Tighten
bolts against pressure plates that cause sealing elements to expand and make watertight
seal.
O. Underground, Exterior-Wall Pipe Penetrations: Install cast-iron "wall pipes" for sleeves. Seal
pipe penetrations using mechanical sleeve seals. Select sleeve size to allow for 1 inch annular
clear space between pipe and sleeve for installing mechanical sleeve seals.
1. Mechanical Sleeve Seal Installation: Select type and number of sealing elements
required for pipe material and size. Position pipe in center of sleeve. Assemble
mechanical sleeve seals and install in annular space between pipe and sleeve. Tighten
bolts against pressure plates that cause sealing elements to expand and make watertight
seal.
P. Fire-Barrier Penetrations: Maintain indicated fire rating of walls,partitions,ceilings,and floors
at pipe penetrations. Seal pipe penetrations with firestop materials.
3.2 PIPING JOINT CONSTRUCTION
A. Join pipe and fittings according to the following requirements.
B. Ream ends of pipes and tubes and remove burrs. Bevel plain ends of steel pipe.
C. Remove scale, slag, dirt, and debris from inside and outside of pipe and fittings before
assembly.
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D. Soldered Joints: Apply ASTM B 813, water-flushable flux,unless otherwise indicated,to tube
end. Construct joints according to ASTM B 828 or CDA's "Copper Tube Handbook," using
lead-free solder alloy complying with ASTM B 32.
E. Brazed Joints: Construct joints according to AWS's "Brazing Handbook," "Pipe and Tube"
Chapter,using copper-phosphorus brazing filler metal complying with AWS A5.8.
F. Threaded Joints: Thread pipe with tapered pipe threads according to ASME B1.20.1. Cut
threads full and clean using sharp dies. Ream threaded pipe ends to remove burrs and restore
full ID. Join pipe fittings and valves as follows:
1. Apply appropriate tape or thread compound to external pipe threads unless dry seal
threading is specified.
2. Damaged Threads: Do not use pipe or pipe fittings with threads that are corroded or
damaged. Do not use pipe sections that have cracked or open welds.
G. Welded Joints: Construct joints according to AWS D10.12, using qualified processes and
welding operators according to Part 1 "Quality Assurance"Article.
H. Flanged Joints: Select appropriate gasket material, size, type, and thickness for service
application. Install gasket concentrically positioned. Use suitable lubricants on bolt threads.
I. Plastic Piping Solvent-Cement Joints: Clean and dry joining surfaces. Join pipe and fittings
according to the following:
1. Comply with ASTM F 402 for safe-handling practice of cleaners, primers, and solvent
cements.
2. ABS Piping: Join according to ASTM D 2235 and ASTM D 2661 Appendixes.
3. CPVC Piping: Join according to ASTM D 2846/D 2846M Appendix.
4. PVC Pressure Piping: Join schedule number ASTM D 1785, PVC pipe and PVC socket
fittings according to ASTM D 2672. Join other-than-schedule-number PVC pipe and
socket fittings according to ASTM D 2855.
5. PVC Nonpressure Piping: Join according to ASTM D 2855.
6. PVC to ABS Nonpressure Transition Fittings: Join according to ASTM D 3138
Appendix.
3.3 PIPING CONNECTIONS
A. Make connections according to the following,unless otherwise indicated:
1. Install unions,in piping NPS 2 and smaller,adjacent to each valve and at final connection
to each piece of equipment.
2. Install flanges, in piping NPS 2-1/2 and larger, adjacent to flanged valves and at final
connection to each piece of equipment.
3. Dry Piping Systems: Install dielectric unions and flanges to connect piping materials of
dissimilar metals.
4. Wet Piping Systems: Install dielectric coupling and nipple fittings to connect piping
materials of dissimilar metals.
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3.4 EQUIPMENT INSTALLATION-COMMON REQUIREMENTS
A. Install equipment to allow maximum possible headroom unless specific mounting heights are
not indicated.
B. Install equipment level and plumb, parallel and perpendicular to other building systems and
components in exposed interior spaces,unless otherwise indicated.
C. Install mechanical equipment to facilitate service, maintenance, and repair or replacement of
components. Connect equipment for ease of disconnecting,with minimum interference to other
installations. Extend grease fittings to accessible locations.
D. Install equipment to allow right of way for piping installed at required slope.
3.5 PAINTING
A. Painting of mechanical systems,equipment,and components is specified in Division 09.
B. Damage and Touchup: Repair marred and damaged factory-painted finishes with materials and
procedures to match original factory finish.
END OF SECTION 230500
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SECTION 230513 -COMMON MOTOR REQUIREMENTS FOR HVAC EQUIPMENT
PART 1 -GENERAL
1.1 RELATED DOCUMENTS
A. Drawings and general provisions of the Contract, including General and Supplementary
Conditions and Division 01 Specification Sections,apply to this Section.
1.2 SUMMARY
A. This Section includes basic requirements for factory-installed and field-installed motors.
1.3 DEFINITIONS
A. Factory-Installed Motor: A motor installed by motorized-equipment manufacturer as a
component of equipment.
B. Field-Installed Motor: A motor installed at Project site and not factory installed as an integral
component of motorized equipment.
1.4 SUBMITTALS
A. Product Data for Field-Installed Motors: For each type and size of motor, provide nameplate
data and ratings; shipping, installed, and operating weights; mounting arrangements; size, type,
and location of winding terminations; conduit entry and ground lug locations; and information
on coatings or finishes.
B. Operation and Maintenance Data: For field-installed motors to be included in operation and
maintenance manuals.
1.5 QUALITY ASSURANCE
A. Source Limitations: Obtain field-installed motors of a single type through one source from a
single manufacturer.
B. Electrical Components, Devices, and Accessories: Listed and labeled as defined in NFPA 70,
Article 100, by a testing agency acceptable to authorities having jurisdiction, and marked for
intended use.
C. Comply with NFPA 70.
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1.6 COORDINATION
A. Coordinate features of motors,installed units,and accessory devices. Provide motors that are:
1. Compatible with the following:
a. Magnetic controllers.
b. Multispeed controllers.
c. Reduced-voltage controllers.
2. Designed and labeled for use with variable frequency controllers, and suitable for use
throughout speed range without overheating.
3. Matched to torque and horsepower requirements of the load.
4. Matched to ratings and characteristics of supply circuit and required control sequence.
B. Coordinate motor support with requirements for driven load; access for maintenance and motor
replacement; installation of accessories, belts, belt guards; and adjustment of sliding rails for
belt tensioning.
C. Coordinate size and location of concrete bases. Cast anchor-bolt inserts into bases. Concrete,
reinforcement,and formwork requirements are specified in Division 03 Section.
PART 2-PRODUCES
2.1 MOTOR REQUIREMENTS
A. Motor requirements apply to factory-installed and field-installed motors except as follows:
1. Different ratings, performance, or characteristics for a motor are specified in another
Section.
2. Manufacturer for a factory-installed motor requires ratings, performance, or
characteristics,other than those specified in this Section,to meet performance specified.
2.2 MOTOR CHARACTERISTICS
A. Motors 3/4 HP and Larger: Three phase.
B. Motors Smaller Than 3/4 HP: Single phase.
C. Frequency Rating: 60 Hz.
D. Voltage Rating: NEMA standard voltage selected to operate on nominal circuit voltage to
which motor is connected.
E. Service Factor: 1.15 for open drip proof motors; 1.0 for totally enclosed motors.
F. Duty: Continuous duty at ambient temperature of 105 deg F and at altitude of 3300 feet above
sea level.
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G. Capacity and Torque Characteristics: Sufficient to start,accelerate,and operate connected loads
at designated speeds, at installed altitude and environment, with indicated operating sequence,
and without exceeding nameplate ratings or considering service factor.
H. Enclosure: Open drip proof or totally enclosed fan cooled(TEFC).
2.3 POLYPHASE MOTORS
A. Description: NEMA MG 1,Design B,medium induction motor.
B. Efficiency: AC polyphase induction motors NEMA Nominal Efficiency shall meet or exceed
the efficiency standards listed. The NEMA Nominal Rating is identified on the motor
nameplate.
Motors(full load)
HP 1200 RPM 1800 3600
5 87.5 87.5 87.5
7.5 89.5 89.5 88.5
10 89.5 89.5 89.5
15 90.2 91.0 90.2
20 90.2 91.0 90.2
25 91.7 92.4 91.0
30 91.7 92.4 91.0
40 93.0 93.0 91.7
50 93.0 93.0 92.4
60 93.6 93.6 93.0
75 93.6 94.1 910
100 94.1 94.5 93.6
125 94.1 94.5 94.5
150 95.0 95.0 94.5
200 95.0 95.0 95.0
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C. Stator: Copper windings,unless otherwise indicated.
1. Multispeed motors shall have separate winding for each speed.
D. Rotor: Squirrel cage,unless otherwise indicated.
E. Bearings: Double-shielded,prelubricated ball bearings suitable for radial and thrust loading.
F. Temperature Rise: Match insulation rating,unless otherwise indicated.
G. Insulation: Class F,unless otherwise indicated.
H. Code Letter Designation:
1. Motors 15 HP and Larger: NEMA starting Code F or G.
2. Motors Smaller Than 15 HP: Manufacturer's standard starting characteristic.
I. Enclosure: Cast iron for motors 7.5 hp and larger;rolled steel for motors smaller than 7.5 hp.
1. Finish: Gray enamel. -
2.4 POLYPHASE MOTORS WITH ADDITIONAL REQUIREMENTS
A. Motors Used with Reduced-Inrush Controllers: Match wiring connection requirements for
controller with required motor leads. Provide terminals in motor terminal box, suited to control
method.
B. Motors Used with Variable Frequency Controllers: Ratings, characteristics, and features
coordinated with and approved by controller manufacturer.
1. Designed with critical vibration frequencies outside operating range of controller output.
2. Temperature Rise: Matched to rating for Class B insulation.
3. Insulation: Class H.
4. Thermal Protection: Comply with NEMA MG 1 requirements for thermally protected
motors.
C. Rugged-Duty Motors: Totally enclosed, with 1.25 minimum service factor, greased bearings,
integral condensate drains, and capped relief vents. Windings insulated with nonhygroscopic
material.
I. Finish: Chemical-resistant paint over corrosion-resistant primer.
D. Source Quality Control: Perform the following tests on each motor according to NEMA MG 1:
1. Measure winding resistance.
2. Read no-load current and speed at rated voltage and frequency.
3. Measure locked rotor current at rated frequency.
4. Perform high-potential test.
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2.5 SINGLE-PHASE MOTORS
A. Type: One of the following, to suit starting torque and requirements of specific motor
application:
1. Permanent-split capacitor.
2. Split-phase start,capacitor run.
3. Capacitor start,capacitor run.
B. Shaded-Pole Motors: For motors 1/20 hp and smaller only.
C. Thermal Protection: Internal protection to automatically open power supply circuit to motor
when winding temperature exceeds a safe value calibrated to temperature rating of motor
insulation. Thermal-protection device shall automatically reset when motor temperature returns
to normal range.
D. Bearings: Ball type for belt-connected motors and other motors with high radial forces on
motor shaft; sealed,prelubricated-sleeve type for other single-phase motors.
PART 3 -EXECUTION
3.1 FIELD-INSTALLED MOTOR INSTALLATION
A. Anchor each motor assembly to base, adjustable rails, or other support, arranged and sized
according to manufacturer's written instructions. Attach by bolting. Level and align with load
transfer link.
B. Install motors on concrete bases complying with Division 03.
C. Comply with mounting and anchoring requirements specified in Section 230548 "Vibration and
Seismic Controls for HVAC Piping and Equipment."
3.2 FIELD QUALITY CONTROL FOR FIELD-INSTALLED MOTORS
A. Prepare for acceptance tests as follows:
1. Align motors,bases, shafts,pulleys, and belts. Tension belts according to manufacturer's
written instructions.
2. Verify bearing lubrication.
3. Run each motor with its controller. Demonstrate correct rotation,alignment,and speed at
motor design load.
4. Test interlocks and control features for proper operation.
5. Verify that current and voltage for each phase is within nameplate rating and NEMA MG
1 tolerances.
B. Perform the following field tests and prepare test reports:
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1. Perform electrical tests and visual and mechanical inspections including tests and
inspections stated in NETA ATS on field-installed motors. Certify compliance with test
parameters.
2. Correct malfunctioning units on-site, where possible, and retest to demonstrate
compliance;otherwise,replace with new units and retest.
END OF SECTION 230513
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SECTION 230519-METERS AND GAGES FOR HVAC PIPING
PART 1 -GENERAL
1.1 RELATED DOCUMENTS
A. Drawings and general provisions of the Contract, including General and Supplementary
Conditions and Division 01 Specification Sections,apply to this Section.
1.2 SUMMARY
A. This Section includes the following meters and gages for mechanical systems:
1. Thermometers.
2. Gages.
3. Test plugs.
1.3 SUBMITTALS
A. Product Data: For each type of product indicated;include performance curves, Shop Drawings,
product certification,operation and maintenance data.
PART 2-PRODUCTS
2.1 MANUFACTURERS
A. In other Part 2 articles where titles below introduce lists, the following requirements apply to
product selection:
1. Available Manufacturers: Subject to compliance with requirements, manufacturers
offering products that may be incorporated into the Work include,but are not limited to,
manufacturers specified.
2.2 SOLAR DIGITAL THERMOMETERS
A. Manufacturers:
1. Ashcroft.
2. MILJOCO Corporation.
3. Trerice,H.O. Co.
4. Weiss Instruments,Inc.
5. Weksler Instruments.
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B. Case: High Impact ABS Plastic.
C. Resolution: 0.10 deg F between-50 deg F to 199.9 deg F.
D. Recalibration: Internal potentiometer.
E. Display: LCD,black.
F. Connector: Adjustable type, 180 degrees in vertical plane,360 degrees in horizontal plane,with
locking device.
G. Stem: Aluminum.
H. Sensor: Glass passivated thermistor.
I. Accuracy: Greater valve of 1 deg F,or 1 percent of reading.
J. Range: -58 deg F to 302 deg F,field switchable to deg C.
2.3 THERMOWELLS
A. Manufacturers: Same as manufacturer of thermometer being used.
B. Description: Pressure-tight,socket-type metal fitting made for insertion into piping and of type,
diameter,and length required to hold thermometer.
2.4 PRESSURE GAGES
A. Manufacturers:
1. Ashcroft Commercial Instrument Operations;Dresser Industries;Instrument Div.
2. Ernst Gage Co.
3. Eugene Ernst Products Co.
4. Marsh Bellofram.
5. MILJOCO Corporation
6. Palmer-Wahl Instruments Inc.
7. Trerice,H.O.Co.
8. Weiss Instruments,Inc.
9. Weksler Instruments Operating Unit;Dresser Industries; Instrument Div.
B. Direct-Mounting, Dial-Type Pressure Gages: Indicating-dial type complying with ASME
B40.100.
1. Case: Liquid-filled type,drawn steel or cast aluminum,4-1/2 inch diameter.
2. Pressure-Element Assembly: Bourdon tube,unless otherwise indicated.
3. Pressure Connection: Brass, NPS 1/4, bottom-outlet type unless back-outlet type is
indicated.
4. Movement: Mechanical,with link to pressure element and connection to pointer.
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5. Dial: Satin-faced,nonreflective aluminum with permanently etched scale markings.
6. Pointer: Red or other dark-color metal.
7. Window: Glass.
8. Ring: Metal.
9. Accuracy: Grade A,plus or minus 1 percent of middle half scale.
10. Vacuum-Pressure Range: 30-in.Hg of vacuum to 15 psig of pressure.
11. Range for Fluids under Pressure: Two times operating pressure.
C. Pressure-Gage Fittings:
1. Valves: NPS 1/4 brass or stainless-steel needle type.
2. Syphons: NPS 1/4 coil of brass tubing with threaded ends.
3. Snubbers: ASME B40.5, NPS 1/4 brass bushing with corrosion-resistant, porous-metal
disc of material suitable for system fluid and working pressure.
2.5 TEST PLUGS
A. Manufacturers:
1. Flow Design,Inc.
2. Peterson Equipment Co.,Inc.
3. Sisco Manufacturing Co.
4. Trerice,H.O.Co.
5. Watts Industries,Inc.;Water Products Div.
B. Description: Corrosion-resistant brass or stainless steel body with core inserts and gasketed and
threaded cap,with extended stem for units to be installed in insulated piping.
C. Minimum Pressure and Temperature Rating: 500 psig at 200 deg F.
D. Core Inserts: One or two self-sealing rubber valves.
1. Insert material for air,water,oil,or gas service at 20 to 200 deg F shall be CR.
2. Insert material for air or water service at minus 30 to plus 275 deg F shall be EPDM.
PART 3-EXECUTION
3.1 APPLICATIONS
A. Install meters and gages as indicated.
B. Provide the following temperature ranges for thermometers:
1. Domestic Hot Water: 30 to 180 deg F,with 2-degree scale divisions.
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3.2 GAGE APPLICATIONS
A. Install dry-case-type pressure gages for discharge of each pressure-reducing valve.
B. Install liquid-filled-case-type pressure gages at suction and discharge of each pump.
3.3 INSTALLATIONS
A. Install direct-mounting thermometers and adjust vertical and tilted positions.
B. Install thermowells with socket extending one-third of diameter of pipe and in vertical position
in piping tees where thermometers are indicated.
C. Install direct-mounting pressure gages in piping tees with pressure gage located on pipe at most
readable position.
D. Install ball-valve and snubber fitting in piping for each pressure gage for fluids(except steam).
E. Install test plugs in tees in piping. -
F. Assemble and install connections, tubing, and accessories between flow-measuring elements
and flowmeters as prescribed by manufacturer's written instructions.
G. Install connection fittings for attachment to portable indicators in accessible locations.
3.4 ADJUSTING
A. Calibrate meters according to manufacturer's written instructions,after installation.
B. Adjust faces of meters and gages to proper angle for best visibility.
END OF SECTION 230519
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SECTION 230523-GENERAL-DUTY VALVES FOR PLUMBING AND HVAC PIPING
PART 1 -GENERAL
1.1 RELATED DOCUMENTS
A. Drawings and general provisions of the Contract, including General and Supplementary
Conditions and Division 01 Specification Sections,apply to this Section.
1.2 SUMMARY
A. This Section includes general duty valves common to several mechanical piping systems.
1.3 SUBMITTALS
A. General: Submit each item in this Article according to the Conditions of the Contract and
Division 01 Specification Sections.
B. Product Data for each valve type. Include body material, valve design, pressure and
temperature classification, end connection details, seating materials, trim material and
arrangement, dimensions and required clearances, and installation instructions. Include list
indicating valve and its application.
1.4 QUALITY ASSURANCE
A. Single-Source Responsibility: Comply with the requirements specified in Division 01 Section
"Materials and Equipment," under"Source Limitations" Paragraph.
B. ASME Compliance: Comply with ASME B31.9 for building services piping and ASME B31.1
for power piping.
C. MSS Compliance: Comply with the various MSS Standard Practice documents referenced.
PART 2-PRODUCTS
2.1 MANUFACTURERS
A. Manufacturers: Subject to compliance with requirements, provide products by one of the
following:
1. Gate Valves:
a. Crane Company;Valves and Fitting Division.
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b. Hammond Valve.
c. Kitz Corporation of America.
d. Milwaukee Valve Company,Inc.
e. NIBCO Inc.
f. Powell: Wm.Powell Company(The).
g. Watt Industries,Inc.
2. Ball Valves:
a. Conbraco Industries,Inc.;Apollo Division.
b. Hammond Valve.
c. Kitz Corporation of America.
d. Milwaukee Valve Company,Inc.
e. NIBCO,Inc.
f. Victaulic Company of America.
g. Watts Industries,Inc.
3. Globe Valves:
a. Crane Company;Valves and Fitting Division.
b. Hammond Valve.
c. Kitz Corporation of America.
d. Milwaukee Valve Company,Inc.
e. NIBCO Inc.
f. Powell: Wm.Powell Company(The).
4. Butterfly Valves:
a. Crane Company;Valves and Fitting Division.
b. General Signal;DeZurik Unit.
c. Grinnell Corp.
d. Hammond Valve.
e. Keystone Valve USA,Inc.
f. Kitz Corporation of America.
g. Line,Mark Controls Corporation.
h. Milwaukee Valve Company,Inc.
i. NIBCO Inc.
j. Victaulic Company of America.
5. Swing Check Valves:
a. Crane Company;Valves and Fitting Division.
b. Hammond Valve.
c. Kitz Corporation of America.
d. Milwaukee Valve Company,Inc.
e. NIBCO,Inc.
f. Powell: Wm. Powell Company(The).
g. Victaulic Company of America.
h. Watts Industries,Inc.
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6. Silent Check Valves:
a. Conbraco Industries,Inc.;Apollo Division.
b. Hammond Valve.
c. Keystone Valve USA,Inc.
d. Metraflex Company.
e. Milwaukee Valve Company,Inc.
f. NIBCO Inc.
g. Victaulic Company of America.
7. Ball Check Valves:
a. Flomatic Corp.
b. Goulds Pumps Inc.
2.2 BASIC,COMMON FEATURES
A. Design: Rising stem or rising outside screw and yoke stems,except as specified below.
1. Nonrising stem valves may be used only where headroom prevents full extension of
rising stems.
B. Pressure and Temperature Ratings: As indicated in the"Application Schedule" of Part 3 of this
Section and as required to suit system pressures and temperatures.
C. Sizes: Same size as upstream pipe,unless otherwise indicated.
D. Operators: Use specified operators and handwheels, except provide the following special
operator features:
1. Handwheels: For valves other than quarter turn.
2. Lever Handles: For quarter-turn valves 6 inches and smaller, except for plug valves,
which shall have square heads.
3. Chain-Wheel Operators: For valves 4 inches and larger, installed 96 inches or higher
above finished floor elevation.
4. Gear-Drive Operators: For quarter-turn valves 8 inches and larger.
E. Extended Stems: Where insulation is indicated or specified,provide extended stems arranged to
receive insulation.
F. Bypass and Drain Connections: Comply with MSS SP-45 bypass and drain connections.
G. Threads: ASME B1.20.1.
H. Flanges: ASME B16.1 for cast iron, ASME B16.5 for steel, and ASME B16.24 for bronze
valves.
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2.3 GATE VALVES
A. Gate Valves, 2-1/2 Inches and Larger: MSS SP-70, Class 125, 200 psi CWP, ASTM A 126
cast-iron body and bonnet, solid cast-iron wedge, brass-alloy stem, outside screw and yoke,
Teflon-impregnated packing with 2-piece packing gland assembly, flanged end connections;
and with cast-iron handwheel.
2.4 BALL VALVES
A. Ball Valves, 2 Inches and Smaller: MSS SP-110, Class 150, 600 psi CWP, ASTM B 584
bronze body and bonnet, 2-piece construction; chrome-plated brass ball, standard port for 1/2-
inch valves and smaller and conventional port for 3/4-inch valves and larger; blowout proof;
bronze or brass stem; Teflon seats and seals. Ball valves shall be full-port type for steam
condensate applications as indicated.
1. Operator: Vinyl-covered steel lever handle.
2. Stem Extension: For valves installed in insulated piping.
B. End Connection: Threaded.
2.5 GLOBE VALVES
A. Globe Valves, 2 Inches and Smaller: MSS SP-80;Class 125, 200 psi CWP, or Class 150, 300
psi CWP; ASTM B 62 cast-bronze body and screwed bonnet, rubber, bronze, or Teflon disc,
silicon bronze-alloy stem, Teflon-impregnated packing with bronze nut, and with aluminum or
malleable-iron handwheel.
B. End Connection: Threaded.
C. Globe Valves, 3 Inchesand Larger: MSS SP-85, Class 125,200 psi CWP, ASTM A 126 cast-
iron body and bolted bonnet with bronze fittings, renewable bronze seat and disc, brass-alloy
stem,outside screw and yoke,Teflon-impregnated packing with cast-iron follower, flanged end
connections;and with cast-iron handwheel.
2.6 BUTTERFLY VALVES
A. Butterfly Valves: MSS SP-67,200 psi CWP, 150 psi maximum pressure differential,ASTM A
126 cast-iron body and bonnet, extended neck, stainless-steel stem, EPDM sleeve and stem
seals,wafer,lug,or grooved style:
1. Disc Type: Nickel-plated ductile iron for HVAC and plumbing.
2. Operator for Sizes 2 Inches to 6 Inches: Lever handle with latch lock.
3. Operator for Sizes 8 Inches to 24 Inches: Gear operator with position indicator.
B. Valves shall be capable of bubble-tight dead-end shut-off at full rated pressure without the need
of a downstream blind flange.
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2.7 CHECK VALVES
A. Swing Check Valves, 2 Inches and Smaller: MSS SP-80; Class 125, 200 psi CWP, or Class
150,300 psi CWP;horizontal swing,Y-pattem,ASTM B 62 cast-bronze body and cap,rotating
bronze disc with rubber seat or composition seat.
B. End Connection: Threaded.
C. Swing Check Valves,2-1/2 Inches and Larger: MSS SP-71,Class 125,200 psi CWP,ASTM A
126 cast-iron body and bolted cap, horizontal-swing bronze disc, flanged or grooved end
connections.
D. Silent Check Valves: Class 125, 200 psi CWP, ASTM A 126 cast-iron body, bronze
disc/plates,stainless steel pins and springs,Buna N seals,wafer or flanged style.
PART 3-EXECUTION
3.1 EXAMINATION
A. Examine piping system for compliance with requirements for installation tolerances and other
conditions affecting performance of valves. Do not proceed with installation until
unsatisfactory conditions have been corrected.
B. Examine valve interior for cleanliness, freedom from foreign matter, and corrosion. Remove
special packing materials, such as blocks, used to prevent disc movement during shipping and
handling.
C. Operate valves from fully open to fully closed positions. Examine guides and seats made
accessible by such operation.
D. Examine threads on valve and mating pipe for form and cleanliness.
E. Examine mating flange faces for conditions that might cause leakage. Check bolting for proper
size, length,and material. Check gasket material for proper size,material composition suitable
for service,and freedom from defects and damage.
F. Do not attempt to repair defective valves;replace with new valves.
3.2 INSTALLATION
A. Install valves as indicated,according to manufacturer's written instructions.
B. Install valves with unions or flanges at each piece of equipment arranged to allow servicing,
maintenance,and equipment removal without system shutdown.
C. Locate valves for easy access and provide separate support where necessary.
D. Install valves in horizontal piping with stem at or above the center of the pipe.
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E. Install valves in a position to allow full stem movement.
F. For chain-wheel operators,extend chains to 60 inches above finished floor elevation.
G. Installation of Check Valves: Install for proper direction of flow as follows:
1. Swing Check Valves: Horizontal position with hinge pin level.
2. Silent Check Valves: Horizontal or vertical position.
3. Lift Check Valve: With stem upright and plumb.
3.3 VALVE END SELECTION
A. Select valves with the following ends or types of pipe/tube connections:
1. Copper Tube Size,2 Inches and Smaller: Threaded ends.
2. Steel Pipe Sizes,2 Inches and Smaller: Threaded or grooved end.
3. Steel Pipe Sizes,2-1/2 Inches and Larger: Grooved end or flanged.
3.4 APPLICATION SCHEDULE
A. General Application: Use gate, ball, and butterfly valves for shutoff duty; globe, ball, and
butterfly for throttling duty. Refer to piping system Specification Sections for specific valve
applications and arrangements. Select trim to suit piping systems:
B. Domestic Water Systems: Use the following valve types.
1. Gate Valves: Class 125,bronze or cast-iron body to suit piping system.
2. Ball Valves: Class 150,600 psi CWP,with stem extension.
3. Globe Valves: Class 125,bronze or cast-iron body to suit piping system, and bronze or
Teflon disc.
4. Butterfly Valves: Nickel-plated ductile iron, aluminum bronze, or elastomer-coated
ductile iron disc;EPDM or Buna N sleeve and stem seals.
5. Bronze Swing Check: Class 125,with rubber seat.
6. Check Valves: Class 125,swing or wafer type as indicated.
3.5 ADJUSTING
A. Adjust or replace packing after piping systems have been tested and put into service,but before
final adjusting and balancing. Replace valves if leak persists.
END OF SECTION 230523
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SECTION 230529-HANGERS AND SUPPORTS FOR HVAC PIPING AND EQUIPMENT
PART 1 -GENERAL
1.1 RELATED DOCUMENTS
A. Drawings and general provisions of the Contract, including General and Supplementary
Conditions and Division 01 Specification Sections,apply to this Section.
1.2 SUMMARY
A. Section Includes:
1. Metal pipe hangers and supports.
2. Trapeze pipe hangers.
3. Thermal-hanger shield inserts.
4. Fastener systems.
5. Equipment supports.
1.3 DEFINITIONS
A. MSS: Manufacturers Standardization Society of The Valve and Fittings Industry Inc.
1.4 SUBMITTALS
A. Product Data: For each type of product indicated.
B. Shop Drawings: For multiple piping supports and trapeze hangers, show fabrication and
installation details and include calculations. Details shall indicate connections to equipment,
piping and structure.
C. Welding certificates.
1.5 QUALITY ASSURANCE
A. Pipe Welding Qualifications: Qualify procedures and operators according to ASME Boiler and
Pressure Vessel Code.
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PART 2-PRODUCTS
2.1 METAL PIPE HANGERS AND SUPPORTS
A. Carbon-Steel Pipe Hangers and Supports:
1. Description: MSS SP-58,Types 1 through 58,factory-fabricated components.
2. Galvanized Metallic Coatings: Pregalvanized or hot dipped.
3. Nonmetallic Coatings: Plastic coating,jacket,or liner.
4. Padded Hangers: Hanger with fiberglass or other pipe insulation pad or cushion to
support bearing surface of piping.
5. Hanger Rods: Continuous-thread rod,nuts,and washer made of carbon steel.
2.2 TRAPEZE PIPE HANGERS
A. Description: MSS SP-69,Type 59, shop- or field-fabricated pipe-support assembly made from
structural carbon-steel shapes with MSS SP-58 carbon-steel hanger rods, nuts, saddles, and U-
bolts.
2.3 THERMAL-HANGER SHIELD INSERTS
A. Manufacturers: Subject to compliance with requirements, available manufacturers offering
products that may be incorporated into the Work include,but are not limited to,the following:
1. Carpenter&Paterson,Inc.
2. ERICO International Corporation.
3. Mechanical Pipe Shields"SNAP-ITZ."
4. National Pipe Hanger Corporation.
5. PHS Industries,Inc.
6. Pipe Shields,Inc.;a subsidiary of Piping Technology&Products,Inc.
7. Piping Technology&Products,Inc.
8. Rilco Manufacturing Co.,Inc.
9. TOLCO a brand of Nibco.
10. Value Engineered Products,Inc.
B. Insulation-Insert Material for Cold Piping: ASTM C 591, Type VI, Grade 1 polyisocyanurate
with 125-psig or water-repellent treated, ASTM C 533, Type I calcium silicate, minimum
compressive strength and vapor barrier.
C. For Trapeze or Clamped Systems: Insert and shield shall cover entire circumference of pipe.
D. For Clevis or Band Hangers: Insert and shield shall cover lower 180 degrees of pipe.
E. Insert Length: Extend 2 inches beyond sheet metal shield for piping operating below ambient
air temperature.
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2.4 FASTENER SYSTEMS
A. Powder-Actuated Fasteners: Threaded-steel stud, for use in hardened portland cement concrete
with pull-out, tension, and shear capacities appropriate for supported loads and building
materials where used.
B. Mechanical-Expansion Anchors: Insert-wedge-type, zinc-coated steel anchors, for use in
hardened portland cement concrete; with pull-out, tension, and shear capacities appropriate for
supported loads and building materials where used.
2.5 EQUIPMENT SUPPORTS
A. Description: Welded, shop-or field-fabricated equipment support made from structural carbon-
steel shapes.
2.6 MISCELLANEOUS MATERIALS
A. Structural Steel: ASTM A 36/A 36M, carbon-steel- plates, shapes, and bars; black and
galvanized.
B. Grout: ASTM C 1107, factory-mixed and -packaged, dry, hydraulic-cement, nonshrink and
nonmetallic grout;suitable for interior and exterior applications.
1. Properties: Nonstaining,noncorrosive,and nongaseous.
2. Design Mix: 5000-psi,28-day compressive strength.
PART 3 -EXECUTION
3.1 HANGER AND SUPPORT INSTALLATION
A. Metal Pipe-Hanger Installation: Comply with MSS SP-69 and MSS SP-89. Install hangers,
supports, clamps, and attachments as required to properly support piping from the building
structure.
B. Metal Trapeze Pipe-Hanger Installation: Comply with MSS SP-69 and MSS SP-89. Arrange
for grouping of parallel runs of horizontal piping, and support together on field-fabricated
trapeze pipe hangers.
1. Pipes of Various Sizes: Support together and space trapezes for smallest pipe size or
install intermediate supports for smaller diameter pipes as specified for individual pipe
hangers.
2. Field fabricate from ASTM A 36/A 36M, carbon-steel shapes selected for loads being
supported. Weld steel according to AWS Dl.l/D1.1M.
C. Thermal-Hanger Shield Installation: Installed by Mechanical Contractor at time of hanger
installation. Inserts are required on all cold piping 2 inch and larger.
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D. Fastener System Installation:
1. Install powder-actuated fasteners for use in lightweight concrete or concrete slabs less
than 4 inches thick in concrete after concrete is placed and completely cured. Use
operators that are licensed by powder-actuated tool manufacturer. Install fasteners
according to powder-actuated tool manufacturer's operating manual.
2. Install mechanical-expansion anchors in concrete after concrete is placed and completely
cured. Install fasteners according to manufacturer's written instructions.
E. Install hangers and supports complete with necessary attachments, inserts, bolts, rods, nuts,
washers,and other accessories.
F. Equipment Support Installation: Fabricate from welded-structural-steel shapes.
G. Install hangers and supports to allow controlled thermal and seismic movement of piping
systems, to permit freedom of movement between pipe anchors, and to facilitate action of
expansion joints,expansion loops,expansion bends,and similar units.
H. Install lateral bracing with pipe hangers and supports to prevent swaying.
I. Install building attachments within concrete slabs or attach to structural steel. Install additional
attachments at concentrated loads,including valves,flanges,and strainers,NPS 2-1/2 and larger
and at changes in direction of piping. Install concrete inserts before concrete is placed; fasten
inserts to forms and install reinforcing bars through openings at top of inserts.
J. Load Distribution: Install hangers and supports so that piping live and dead loads and stresses
from movement will not be transmitted to connected equipment.
K. Pipe Slopes: Install hangers and supports to provide indicated pipe slopes and to not exceed
maximum pipe deflections allowed by ASME B31.9 for building services piping.
L. Insulated Piping:
1. Attach clamps and spacers to piping.
a. Piping Operating above Ambient Air Temperature: Clamp may project through
insulation.
b. Piping Operating below Ambient Air Temperature: Use thermal-hanger shield
insert with clamp sized to match OD of insert for pipes 2 inches and larger. Run
insulation continuously through hanger and install a galvanized Type 40 insulation
shield between hanger and insulation for pipes smaller than 2 inches.
c. Do not exceed pipe stress limits allowed by ASME B31.9 for building services
piping.
2. Where indicated, install MSS SP-58, Type 39, protection saddles if insulation without
vapor barrier is indicated. Fill interior voids with insulation that matches adjoining
insulation.
3. Install MSS SP-58,Type 40,protective shields on cold piping with vapor barrier smaller
than 2 inches. Shields shall span an arc of 180 degrees.
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4. Shield Dimensions for Pipe: Not less than the following:
a. NPS 1/4 to NPS 3-1/2: 12 inches long and 0.048 inch thick.
b. NPS 4: 12 inches long and 0.06 inch thick.
c. NPS 5 and NPS 6: 18 inches long and 0.06 inch thick.
d. NPS 8 to NPS 14: 24 inches long and 0.075 inch thick.
e. NPS 16 to NPS 24: 24 inches long and 0.105 inch thick.
5. Thermal-Hanger Shields: Install with insulation same thickness as piping insulation.
3.2 EQUIPMENT SUPPORTS
A. Fabricate structural-steel stands to suspend equipment from structure overhead or to support
equipment above floor.
B. Grouting: Place grout under supports for equipment and make bearing surface smooth.
C. Provide lateral bracing,to prevent swaying, for equipment supports.
3.3 METAL FABRICATIONS
A. Cut,drill,and fit miscellaneous metal fabrications for equipment supports.
B. Fit exposed connections together to form hairline joints. Field weld connections that cannot be
shop welded because of shipping size limitations.
C. Field Welding: Comply with AWS D1.1/D1.1M procedures for shielded, metal arc welding;
appearance and quality of welds; and methods used in correcting welding work; and with the
following:
1. Use materials and methods that minimize distortion and develop strength and corrosion
resistance of base metals.
2. Obtain fusion without undercut or overlap.
3. Remove welding flux immediately.
4. Finish welds at exposed connections so no roughness shows after finishing and so
contours of welded surfaces match adjacent contours.
3.4 ADJUSTING
A. Hanger Adjustments: Adjust hangers to distribute loads equally on attachments and to achieve
indicated slope of pipe.
B. Trim excess length of continuous-thread hanger and support rods.
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3.5 PAINTING
A. Touchup: Clean field welds and abraded areas of shop paint. Paint exposed areas immediately
after erecting hangers and supports. Use same materials as used for shop painting. Comply
with SSPC-PA 1 requirements for touching up field-painted surfaces.
1. Apply paint by brush or spray to provide a minimum dry film thickness of 2.0 mils.
B. Touchup: Cleaning and touchup painting of field welds,bolted connections,and abraded areas
of shop paint on miscellaneous metal are specified in Division 09 painting Sections.
C. Galvanized Surfaces: Clean welds, bolted connections, and abraded areas and apply
galvanizing-repair paint to comply with ASTM A 780.
3.6 HANGER AND SUPPORT SCHEDULE
A. Specific hanger and support requirements are in Sections specifying piping systems and
equipment.
B. Comply with MSS SP-69 for pipe-hanger selections and applications that are not specified in
piping system Sections.
C. Use hangers and supports with galvanized metallic coatings for piping and equipment that will
not have field-applied finish.
D. Use nonmetallic coatings on attachments for electrolytic protection where attachments are in
direct contact with copper tubing.
E. Use carbon-steel pipe hangers and supports and attachments for general service applications.
F. Use padded hangers for piping that is subject to scratching.
G. Use thermal-hanger shield inserts for cold insulated piping and tubing.
H. Horizontal-Piping Hangers and Supports: Unless otherwise indicated and except as specified in
piping system Sections,install the following types:
Pipe Size Pipe Material MSS Manufacturer/Model Notes
Hanger
Type
1/2" -4" Bare Steel Type 1 ANVIL Fig.65
5"- 14" Bare Steel Type 1 ANVIL Fig.260
1/2"-4" Bare Copper Type 9 ANVIL Fig. CT-99
or CT-65
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Pipe Size Pipe Material MSS Manufacturer/Model Notes
Hanger
Type
1/2"-4" Insulated Copper(Hot) Type 9 ANVIL Fig. CT-99
or CT-65
1/2"- 12" Insulated Steel(Hot) Type 1 ANVIL Fig. 300 Hanger may contact
pipe.
1/2"- 1-1-2" Insulated Copper and Type 1 ANVIL Fig. 300 No pipe contact
Steel(Cold) with shield allowed.
2"- 12" Insulated Copper and "Type 1 ANVIL Fig. 300 No pipe contact
Steel(Cold) with shield and allowed.
insert
2" -8" Cast Iron Sewer Type 1 ANVIL Fig.260
1/2"-4" Bare PVC Type 1 ANVIL Fig. 65
Epoxy Coated
5"- 18" Bare PVC Type 1 ANVIL Fib. 260
(Epoxy Coated)
I. Vertical-Piping Clamps: Unless otherwise indicated and except as specified in piping system
Sections,install the following types:
1. Extension Pipe or Riser Clamps (MSS Type 8): For support of pipe risers NPS 3/4 to
NPS 24.
2. Carbon-or Alloy-Steel Riser Clamps(MSS Type 42): For support of pipe risers NPS 3/4
to NPS 24 if longer ends are required for riser clamps.
J. Hanger-Rod Attachments: Unless otherwise indicated and except as specified in piping system
Sections,install the following types:
1. Steel Turnbuckles(MSS Type 13): For adjustment up to 6 inches for heavy loads.
2. Steel Clevises(MSS Type 14): For 120 to 450 deg F piping installations.
3. Swivel Turnbuckles(MSS Type 15): For use with MSS Type 11,split pipe rings.
4. Malleable-lion Sockets (MSS Type 16): For attaching hanger rods to various types of
building attachments.
5. Steel Weldless Eye Nuts(MSS Type 17): For 120 to 450 deg F piping installations.
K. Building Attachments: Unless otherwise indicated and except as specified in piping system
Sections,install the following types:
1. Steel or Malleable Concrete Inserts (MSS Type 18): For upper attachment to suspend
pipe hangers from concrete ceiling.
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2. Top-Beam C-Clamps (MSS Type 19): For use under roof installations with bar joist
construction,to attach to top flange of structural shape.
3. Side-Beam or Channel Clamps(MSS Type 20): For attaching to bottom flange of beams,
channels,or angles.
4. Center-Beam Clamps(MSS Type 21): For attaching to center of bottom flange of beams.
5. Welded Beam Attachments (MSS Type 22): For attaching to bottom of beams if loads
are considerable and rod sizes are large.
6. C-Clamps(MSS Type 23): For structural shapes.
7. Top-Beam Clamps(MSS Type 25): For top of beams if hanger rod is required tangent to
flange edge.
8. Side-Beam Clamps(MSS Type 27): For bottom of steel I-beams.
9. Steel-Beam Clamps with Eye Nuts (MSS Type 28): For attaching to bottom of steel I-
beams for heavy loads.
10. Linked-Steel Clamps with Eye Nuts(MSS Type 29): For attaching to bottom of steel I-
beams for heavy loads,with link extensions.
11. Malleable-Beam Clamps with Extension Pieces (MSS Type 30): For attaching to
structural steel.
12. Welded-Steel Brackets: For support of pipes from below or for suspending from above
by using clip and rod. Use one of the following for indicated loads:
a. Light(MSS Type 31): 750 lb.
b. Medium(MSS Type 32): 1500 lb.
c. Heavy(MSS Type 33): 3000 lb.
13. Side-Beam Brackets(MSS Type 34): For sides of steel or wooden beams.
14. Plate Lugs(MSS Type 57): For attaching to steel beams if flexibility at beam is required.
15. Horizontal Travelers (MSS Type 58): For supporting piping systems subject to linear
horizontal movement where headroom is limited.
L. Saddles and Shields: Unless otherwise indicated and except as specified in piping system
Sections,install the following types:
1. Steel-Pipe-Covering Protection Saddles (MSS Type 39): To fill interior voids with
insulation that matches adjoining insulation.
2. Protection Shields (MSS Type 40): Of length recommended in writing by manufacturer
to prevent crushing insulation.
3. Thermal-Hanger Shield Inserts: For supporting insulated pipe.
M. Comply with MSS SP-69 for trapeze pipe-hanger selections and applications that are not
specified in piping system Sections.
N. Use powder-actuated fasteners or mechanical-expansion anchors instead of building
attachments where required in concrete construction.
END OF SECTION 230529
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SECTION 230548 - VIBRATION AND SEISMIC CONTROLS FOR PLUMBING AND HVAC
PIPING AND EQUIPMENT
PART 1 -GENERAL
1.1 RELATED DOCUMENTS
A. Drawings and general provisions of the Contract, including General and Supplementary
Conditions and Division 01 Specification Sections,apply to this Section.
1.2 SUMMARY
A. This Section includes the following:
1. Freestanding and restrained spring isolators.
2. Spring hangers.
3. Seismic snubbers.
4. Restraining braces and cables.
1.3 DEFINITIONS
A. IBC: International Building Code.
B. ICC-ES: ICC-Evaluation Service.
1.4 PERFORMANCE REQUIREMENTS
A. Wind-Restraint Loading:
1. Basic Wind Speed: 95 MPH.
2. Occupancy Classification Category: II.
3. Minimum 10 lb/sq. ft. multiplied by the maximum area of the HVAC component
projected on a vertical plane that is normal to the wind direction, and 45 degrees either
side of normal.
B. Seismic-Restraint Loading: -
1. Site Class as Defined in the IBC: D.
2. Occupancy Classification Category as Defined in the IBC: II.
a. Component Importance Factor: ASCE Chapter 13,based on application.
b. Component Response Modification Factor: ASCE Chapter 13, based on
application.
c. Component Amplification Factor: ASCE Chapter 13,based on application.
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3. Design Spectral Response Acceleration at Short Periods(0.2 Second): SDS=70.1.
4. Design Spectral Response Acceleration at 1-Second Period: SDI =38.8.
1.5 SUBMITTALS
A. Product Data:For the following:
1. Include rated load, rated deflection, and overload capacity for each vibration isolation
device.
2. Illustrate and indicate style, material, strength, fastening provision, and finish for each
type and size of seismic-restraint component used.
a. Tabulate types and sizes of seismic restraints, complete with report numbers and
rated strength in tension and shear as evaluated by an evaluation service member
of ICC-ES,OSHPD or an agency acceptable to authorities having jurisdiction].
b. Annotate to indicate application of each product submitted and compliance with
requirements.
3. Interlocking Snubbers: Include ratings for horizontal,vertical,and combined loads.
B. Delegated-Design Submittal: For vibration isolation and seismic-restraint details indicated to
comply with performance requirements and design criteria, including analysis data signed and
sealed by the qualified professional engineer responsible for their preparation.
1. Design Calculations: Calculate static and dynamic loading due to equipment weight and
operation,seismic and wind forces required to select vibration isolators,seismic and wind
restraints,and for designing vibration isolation bases.
a. Coordinate design calculations with wind load calculations required for equipment
mounted outdoors. Comply with requirements in other Division 22 Sections for
equipment mounted outdoors.
2. Vibration Isolation Base Details: Detail overall dimensions, including anchorages and
attachments to structure and to supported equipment. Include auxiliary motor slides and
rails,base weights,equipment static loads,power transmission,component misalignment,
and cantilever loads.
3. Seismic and Wind-Restraint Details:
a. Design Analysis: To support selection and arrangement of seismic and wind
restraints. Include calculations of combined tensile and shear loads.
b. Details: Indicate fabrication and arrangement. Detail attachments of restraints to
the restrained items and to the structure. Show attachment locations,methods, and
spacings. Identify components, list their strengths, and indicate directions and
values of forces transmitted to the structure during seismic events. Indicate
association with vibration isolation devices.
c. Coordinate seismic-restraint and vibration isolation details with wind-restraint
details required for equipment mounted outdoors. Comply with requirements in
other Division 22 Sections for equipment mounted outdoors.
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d. Preapproval and Evaluation Documentation: By an evaluation service member of
ICC-ES, OSHPD or an agency acceptable to authorities having jurisdiction,
showing maximum ratings of restraint items and the basis for approval (tests or
calculations).
C. Coordination Drawings: Show coordination of seismic bracing for HVAC piping and
equipment with other systems and equipment in the vicinity, including other supports and
seismic restraints.
D. Welding certificates.
E. Field quality-control test reports.
1.6 QUALITY ASSURANCE
A. Testing Agency Qualifications: An independent agency, with the experience and capability to
conduct the testing indicated, that is a nationally recognized testing laboratory (NRTL) as
defined by OSHA in 29 CFR 1910.7,and that is acceptable to authorities having jurisdiction.
B. Comply with seismic-restraint requirements in the IBC unless requirements in this Section are
more stringent.
C. Welding: Qualify procedures and personnel according to AWS D1.1/D1.1M, "Structural
Welding Code-Steel."
D. Seismic-restraint devices shall have horizontal and vertical load testing and analysis and shall
bear anchorage preapproval OPA number from OSHPD, preapproval by ICC-ES, or
preapproval by another agency acceptable to authorities having jurisdiction,showing maximum
seismic-restraint ratings. Ratings based on independent testing are preferred to ratings based on
-• calculations. If preapproved ratings are not available, submittals based on independent testing
are preferred. Calculations (including combining shear and tensile loads) to support seismic-
restraint designs must be signed and sealed by a qualified professional engineer.
PART 2-PRODUCTS
2.1 VIBRATION ISOLATORS
A. Available Manufacturers: Subject to compliance with requirements, manufacturers offering
products that may be incorporated into the Work include,but are not limited to,the following:
1. Ace Mountings Co.,Inc.
2. Amber/Booth Company,Inc.
3. California Dynamics Corporation.
4. Isolation Technology,Inc.
5. Kinetics Noise Control.
6. Mason Industries.
7. Vibration Eliminator Co.,Inc.
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8. Vibration Isolation.
9. Vibration Mountings&Controls,Inc.
B. Spring Isolators: Freestanding,laterally stable,open-spring isolators.
1. Outside Spring Diameter: Not less than 80 percent of the compressed height of the
spring at rated load.
2. Minimum Additional Travel: 50 percent of the required deflection at rated load.
3. Lateral Stiffness: More than 80 percent of rated vertical stiffness.
4. Overload Capacity: Support 200 percent of rated load, fully compressed, without
deformation or failure.
5. Baseplates: Factory drilled for bolting to structure and bonded to 1/4-inch-thick,rubber
isolator pad attached to baseplate underside. Baseplates shall limit floor load to 500 psig.
6. Top Plate and Adjustment Bolt: Threaded top plate with adjustment bolt and cap screw
to fasten and level equipment.
C. Restrained Spring Isolators: Freestanding,steel,open-spring isolators with seismic or limit-stop
restraint.
1. Housing: Steel with resilient vertical-limit stops to prevent spring extension due to
weight being removed; factory-drilled baseplate bonded to 1/4-inch- thick, neoprene or
rubber isolator pad attached to baseplate underside; and adjustable equipment mounting
and leveling bolt that acts as blocking during installation.
2. Restraint: Seismic or limit stop as required for equipment and authorities having
jurisdiction.
3. Outside Spring Diameter: Not less than 80 percent of the compressed height of the
spring at rated load.
4. Minimum Additional Travel: 50 percent of the required deflection at rated load.
5. Lateral Stiffness: More than 80 percent of rated vertical stiffness.
6. Overload Capacity: Support 200 percent of rated load, fully compressed, without
deformation or failure.
D. Spring Hangers: Combination coil-spring and elastomeric-insert hanger with spring and insert
in compression.
1. Frame: Steel, fabricated for connection to threaded hanger rods and to allow for a
maximum of 30 degrees of angular hanger-rod misalignment without binding or reducing
isolation efficiency.
2. Outside Spring Diameter: Not less than 80 percent of the compressed height of the
spring at rated load.
3. Minimum Additional Travel: 50 percent of the required deflection at rated load.
4. Lateral Stiffness: More than 80 percent of rated vertical stiffness.
5. Overload Capacity: Support 200 percent of rated load, fully compressed, without
deformation or failure.
6. Elastomeric Element: Molded,oil-resistant rubber or neoprene. Steel-washer-reinforced
cup to support spring and bushing projecting through bottom of frame.
7. Self-centering hanger rod cap to ensure concentricity between hanger rod and support
spring coil.
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E. Spring Hangers with Vertical-Limit Stop: Combination coil-spring and elastomeric-insert
hanger with spring and insert in compression and with a vertical-limit stop.
1. Frame: Steel, fabricated for connection to threaded hanger rods and to allow for a
maximum of 30 degrees of angular hanger-rod misalignment without binding or reducing
isolation efficiency.
2. Outside Spring Diameter: Not less than 80 percent of the compressed height of the
spring at rated load.
3. Minimum Additional Travel: 50 percent of the required deflection at rated load.
4. Lateral Stiffness: More than 80 percent of rated vertical stiffness.
5. Overload Capacity: Support 200 percent of rated load, fully compressed, without
deformation or failure.
6. Elastomeric Element: Molded,oil-resistant rubber or neoprene.
7. Adjustable Vertical Stop: Steel washer with neoprene washer "up-stop" on lower
threaded rod.
8. Self-centering hanger rod cap to ensure concentricity between hanger rod and support
spring coil.
F. Pipe Riser Resilient Support: All-directional, acoustical pipe anchor consisting of 2 steel tubes
separated by a minimum of 1/2-inch-thick neoprene. Include steel and neoprene vertical-limit
stops arranged to prevent vertical travel in both directions. Design support for a maximum load
on the isolation material of 500 prig and for equal resistance in all directions.
G. Resilient Pipe Guides: Telescopic arrangement of two steel tubes or post and sleeve
arrangement separated by a minimum of 1/2-inch- thick neoprene. Where clearances are not
readily visible,a factory-set guide height with a shear pin to allow vertical motion due to pipe
expansion and contraction shall be fitted. Shear pin shall be removable and reinsertable to
allow for selection of pipe movement. Guides shall be capable of motion to meet location
requirements.
2.2 SEISMIC-RESTRAINT DEVICES
A. Available Manufacturers: Subject to compliance with requirements, manufacturers offering
products that may be incorporated into the Work include,but are not limited to,the following:
1. Amber/Booth Company,Inc.
2. California Dynamics Corporation.
3. Cooper B-Line,Inc.;a division of Cooper Industries.
4. Hilti,Inc.
_ 5. Kinetics Noise Control.
6. Loos&Co.;Cableware Division.
7. Mason Industries.
8. TOLCO Incorporated;a brand of NIBCO INC.
9. Unistrut;Tyco International,Ltd.
B. General Requirements for Restraint Components: Rated strengths, features, and applications
shall be as defined in reports by an evaluation service member of ICC-ES,OSHPD or an agency
acceptable to authorities having jurisdiction.
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1. Structural Safety Factor: Allowable strength in tension, shear, and pullout force of
components shall be at least four times the maximum seismic forces to which they will be
subjected.
C. Snubbers: Factory fabricated using welded structural-steel shapes and plates, anchor bolts,and
replaceable resilient isolation washers and bushings.
1. Anchor bolts for attaching to concrete shall be seismic-rated, drill-in, and stud-wedge or
female-wedge type.
2. Resilient Isolation Washers and Bushings: Oil-and water-resistant neoprene.
3. Maximum 1/4-inch air gap,and minimum 1/4-inch-thick resilient cushion.
D. Channel Support System: MFMA-3,shop-or field-fabricated support assembly made of slotted
steel channels with accessories for attachment to braced component at one end and to building
structure at the other end and other matching components and with corrosion-resistant coating;
and rated in tension,compression,and torsion forces.
E. Restraint Cables: ASTM A 603 galvanized or ASTM A 492 stainless]-steel cables with end
connections made of steel assemblies with thimbles, brackets, swivel, and bolts designed for
restraining cable service;and with a minimum of two clamping bolts for cable engagement.
F. Hanger Rod Stiffener: Steel tube or steel slotted-support-system sleeve with internally bolted
connections or reinforcing steel angle clamped to hanger rod.
G. Bushings for Floor-Mounted Equipment Anchor Bolts: Neoprene bushings designed for rigid
equipment mountings,and matched to type and size of anchor bolts and studs.
H. Bushing Assemblies for Wall-Mounted Equipment Anchorage: Assemblies of neoprene
elements and steel sleeves designed for rigid equipment mountings, and matched to type and
size of attachment devices used.
I. Resilient Isolation Washers and Bushings: One-piece, molded, oil- and water-resistant
neoprene,with a flat washer face.
J. Mechanical Anchor Bolts: Drilled-in and stud-wedge or female-wedge type in zinc-coated steel
for interior applications and stainless steel for exterior applications. Select anchor bolts with
strength required for anchor and as tested according to ASTM E 488. Minimum length of eight
times diameter.
K. Adhesive Anchor Bolts: Drilled-in and capsule anchor system containing polyvinyl or urethane
methacrylate-based resin and accelerator, or injected polymer or hybrid mortar adhesive.
Provide anchor bolts and hardware with zinc-coated steel for interior applications and stainless
steel for exterior applications. Select anchor bolts with strength required for anchor and as
tested according to ASTM E 488.
2.3 FACTORY FINISHES
A. Finish: Manufacturer's standard prime-coat finish ready for field painting.
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B. Finish: Manufacturer's standard paint applied to factory-assembled and -tested equipment
before shipping.
1. Powder coating on springs and housings.
2. All hardware shall be galvanized. Hot-dip galvanize metal components for exterior use.
3. Baked enamel or powder coat for metal components on isolators for interior use.
4. Color-code or otherwise mark vibration isolation and seismic-and wind-control devices
to indicate capacity range.
PART 3-EXECUTION
3.1 EXAMINATION
A. Examine areas and equipment to receive vibration isolation and seismic-and wind-control
devices for compliance with requirements for installation tolerances and other conditions
affecting performance.
B. Examine roughing-in of reinforcement and cast-in-place anchors to verify actual locations
before installation.
C. Proceed with installation only after unsatisfactory conditions have been corrected.
3.2 APPLICATIONS
A. Multiple Pipe Supports: Secure pipes to trapeze member with clamps approved for application
by an evaluation service member of ICC-ES OSHPD or an agency acceptable to authorities
having jurisdiction.
B. Hanger Rod Stiffeners: Install hanger rod stiffeners where indicated or scheduled on Drawings
to receive them and where required to prevent buckling of hanger rods due to seismic forces.
C. Strength of Support and Seismic-Restraint Assemblies: Where not indicated, select sizes of
components so strength will be adequate to carry present and future static and seismic loads
within specified loading limits.
3.3 VIBRATION-CONTROL AND SEISMIC-RESTRAINT DEVICE INSTALLATION
A. Comply with requirements in Division 07 Section"Roof Accessories" for installation of roof
curbs,equipment supports,and roof penetrations.
B. Equipment Restraints:
1. Install seismic snubbers on HVAC equipment mounted on vibration isolators. Locate
snubbers as close as possible to vibration isolators and bolt to equipment base and
supporting structure.
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2. Install resilient bolt isolation washers on equipment anchor bolts where clearance
between anchor and adjacent surface exceeds 0.125 inch.
3. Install seismic-restraint devices using methods approved by an evaluation service
member of ICC-ES, OSHPD or an agency acceptable to authorities having jurisdiction
providing required submittals for component.
C. Piping Restraints:
1. Comply with requirements in MSS SP-127.
2. Space lateral supports a maximum of 40 feet o.c., and longitudinal supports a maximum
of 80 feet o.c.
3. Brace a change of direction longer than 12 feet.
D. Install cables so they do not bend across edges of adjacent equipment or building structure.
E. Install seismic-restraint devices using methods approved by an evaluation service member of
ICC-ES,OSHPD or an agency acceptable to authorities having jurisdiction] providing required
submittals for component.
F. Install bushing assemblies for anchor bolts for floor-mounted equipment, arranged to provide
resilient media between anchor bolt and mounting hole in concrete base.
G. Install bushing assemblies for mounting bolts for wall-mounted equipment,arranged to provide
resilient media where equipment or equipment-mounting channels are attached to wall.
H. Attachment to Structure: If specific attachment is not indicated, anchor bracing to structure at
flanges of beams,at upper truss chords of bar joists,or at concrete members.
I. Drilled-in Anchors:
1. Identify position of reinforcing steel and other embedded items prior to drilling holes for
anchors. Do not damage existing reinforcing or embedded items during coring or
drilling. Notify the structural engineer if reinforcing steel or other embedded items are
encountered during drilling. Locate and avoid prestressed tendons, electrical and
telecommunications conduit,and gas lines.
2. Do not drill holes in concrete or masonry until concrete, mortar, or grout has achieved
full design strength.
3. Wedge Anchors: Protect threads from damage during anchor installation. Heavy-duty
sleeve anchors shall be installed with sleeve fully engaged in the structural element to
which anchor is to be fastened.
4. Adhesive Anchors: Clean holes to remove loose material and drilling dust prior to
installation of adhesive. Place adhesive in holes proceeding from the bottom of the hole
and progressing toward the surface in such a manner as to avoid introduction of air
pockets in the adhesive.
5. Set anchors to manufacturer's recommended torque,using a torque wrench.
6. Install zinc-coated steel anchors for interior and stainless-steel anchors for exterior
applications.
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3.4 ACCOMMODATION OF DIFFERENTIAL SEISMIC MOTION
A. Install flexible connections in piping where they cross seismic joints,where adjacent sections or
branches are supported by different structural elements, and where the connections terminate
with connection to equipment that is anchored to a different structural element from the one
supporting the connections as they approach equipment. Comply with requirements in
Division 22 Section "Hydronic Piping"for piping flexible connections.
END OF SECTION 230548
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SECTION 230553-IDENTIFICATION FOR PLUMBING AND HVAC PIPING AND EQUIPMENT
PART 1 -GENERAL
1.1 RELATED DOCUMENTS
A. Drawings and general provisions of the Contract, including General and Supplementary
Conditions and Division 01 Specification Sections,apply to this Section.
1.2 SUMMARY
A. This Section includes the following mechanical identification materials and their installation:
1. Equipment markers.
2. Pipe markers.
3. Stencils.
1.3 SUBMITTALS
A. Product Data: For each type of product indicated.
1.4 QUALITY ASSURANCE
A. ASME Compliance: Comply with ASME A13.1, "Scheme for the Identification of Piping
Systems," for letter size, length of color field, colors, and viewing angles of identification
devices for piping.
1.5 COORDINATION
A. Coordinate installation of identifying devices with completion of covering and painting of
surfaces where devices are to be applied.
B. Coordinate installation of identifying devices with location of access panels and doors.
C. Install identifying devices before installing acoustical ceilings and similar concealment.
PART 2-PRODUCTS
2.1 EQUIPMENT IDENTIFICATION DEVICES
A. Equipment Markers: Engraved,color-coded laminated plastic. Include contact-type,permanent
adhesive.
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1. Terminology: Match schedules as closely as possible.
2. Data:
a. Name and plan number.
b. Equipment service.
c. Design capacity.
d. Other design parameters such as pressure drop, entering and leaving conditions,
and speed.
3. Size: 2-1/2 by 4 inchesfor control devices, dampers, and valves; 4-1/2 by 6 inchesfor
equipment.
2.2 PIPING IDENTIFICATION DEVICES
A. Manufactured Pipe Markers,General: Preprinted,color-coded,with lettering indicating service,
and showing direction of flow.
1. Colors: Comply with ASME A13.1,unless otherwise indicated.
2. Lettering: Use piping system terms indicated and abbreviate only as necessary for each
application length.
3. Pipes with OD, Including Insulation, Less Than 6 inches: Full-band pipe markers
extending 360 degrees around pipe at each location.
4. Pipes with OD, Including Insulation, 6 inches and Larger: Either full-band or strip-type
pipe markers at least three times letter height and of length required for label.
5. Arrows: Integral with piping system service lettering to accommodate both directions;or
as separate unit on each pipe marker to indicate direction of flow.
B. Pretensioned Pipe Markers: Precoiled semirigid plastic formed to cover full circumference of
pipe and to attach to pipe without adhesive.
C. Shaped Pipe Markers: Preformed semirigid plastic formed to partially cover circumference of
pipe and to attach to pipe with mechanical fasteners that do not penetrate insulation vapor
barrier.
D. Self-Adhesive Pipe Markers: Plastic with pressure-sensitive, permanent-type, self-adhesive
back.
E. Plastic Tape: Continuously printed, vinyl tape at least 3 mils thick with pressure-sensitive,
permanent-type,self-adhesive back.
1. Width for Markers on Pipes with OD, Including Insulation, Less Than 6 inches: 3/4-
inchminimum.
2. Width for Markers on Pipes with OD, Including Insulation, 6 inches or Larger: 1-1/2
inchesminimum.
2.3 STENCILS
A. Stencils: Prepared with letter sizes according to ASME A13.1 for piping.
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1. Stencil Material: Metal or fiberboard.
2. Stencil Paint: Exterior,gloss,alkyd enamel or acrylic enamel black,in pressurized spray-
can form.
PART 3-EXECUTION
3.1 APPLICATIONS,GENERAL
A. Products specified are for applications referenced in other related Sections. If more than single-
type material,device,or label is specified for listed applications,selection is Installer's option.
3.2 EQUIPMENT IDENTIFICATION
A. Install equipment markers with permanent adhesive on or near each major item of mechanical
equipment.
1. Letter Size: Minimum 1/4-inchfor name of units if viewing distance is less than 24
inches, I/2-inchfor viewing distances up to 72 inches,and proportionately larger lettering
for greater viewing distances. Include secondary lettering two-thirds to three-fourths the
size of principal lettering.
2. Data: Distinguish among multiple units, indicate operational requirements, indicate
safety and emergency precautions,warn of hazards and improper operations,and identify
units.
3. Locate markers where accessible and visible. Include markers for the following general
categories of equipment:
a. Fire department hose valves and hose stations.
b. Fuel-burning units,including boilers,furnaces,heaters,and rooftop units.
c. Pumps,compressors,chillers,condensers,and similar motor-driven units.
d. Heat exchangers,cooling towers,heat recovery units,and similar equipment.
e. Fans,blowers,mixing boxes and VAV boxes.
f. Packaged HVAC central-station air handling units.
g. Tanks and pressure vessels.
B. Stenciled Equipment Marker Option: Stenciled markers may be provided instead of laminated-
plastic equipment markers, at Installer's option,if lettering larger than 1 inch high is needed for
proper identification because of distance from normal location of required identification.
3.3 PIPING IDENTIFICATION
A. Install manufactured pipe markers indicating service on each piping system. Install with flow
indication arrows showing direction of flow.
1. Pipes with OD, Including Insulation, Less Than 6 inches: Self-adhesive pipe markers.
Use color-coded, self-adhesive plastic tape, at least 3/4-inch wide, lapped at least 1-1/2
inches at both ends of pipe marker,and covering full circumference of pipe.
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2. Pipes with OD, Including Insulation, 6 inches and Larger: Self-adhesive pipe markers.
Use color-coded, self-adhesive plastic tape, at least 1-1/2 inches wide, lapped at least 3
inches at both ends of pipe marker,and covering full circumference of pipe.
B. Stenciled Pipe Marker Option: Stenciled markers may be provided instead of manufactured
pipe markers,at Installer's option. Install stenciled pipe markers complying with ASME A13.1
on each piping system.
C. Locate pipe markers where piping is exposed in finished spaces; machine rooms; accessible
maintenance spaces such as shafts, tunnels, and plenums; exterior nonconcealed locations and
concealed ceiling spaces as follows:
1. Near each valve and control device.
2. Near each branch connection, excluding short takeoffs for fixtures and terminal units.
Where flow pattern is not obvious,mark each pipe at branch.
3. Near penetrations through walls,floors,ceilings,and nonaccessible enclosures.
4. At access doors, manholes, and similar access points that permit view of concealed
piping.
5. Near major equipment items and other points of origination and termination.
6. Spaced at maximum intervals of 50 feet along each run. Reduce intervals to 25 feet in
areas of congested piping and equipment.
7. On piping above removable acoustical ceilings at intervals of 50 feet.
3.4 CLEANING
A. Clean faces of mechanical identification devices and glass frames of valve schedules.
END OF SECTION 230553
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SECTION 230593 -TESTING,ADJUSTING,AND BALANCING FOR HVAC
PART 1 -GENERAL
1.1 RELATED DOCUMENTS
A. Drawings and general provisions of the Contract, including General and Supplementary
Conditions and Division 01 Specification Sections,apply to this Section.
1.2 SUMMARY
A. This Section includes TAB to produce design objectives for all air and water systems.
1.3 SUBMITTALS
A. Qualification Data: Within 30 days from Contractor's Notice to Proceed, submit 2 copies of
evidence that TAB firm and this Project's TAB team members meet the qualifications specified
in"Quality Assurance"Article.
B. Contract Documents Examination Report: Within 45 days from Contractor's Notice to Proceed,
submit 2 copies of the Contract Documents review report as specified in Part 3.
C. Sample Report Forms: Submit two sets of sample TAB report forms.
1.4 QUALITY ASSURANCE
A. TAB Firm Qualifications: Engage a TAB firm certified by either AABC or NEBB.
B. The Test and Balance Contractor shall be an independent consultant. The firm shall be
independent of all Contractors including the Mechanical and Temperature Controls Contractor.
C. Certification of TAB Reports: Certify TAB field data reports. This certification includes the
following:
1. Review field data reports to validate accuracy of data and to prepare certified TAB
reports.
2. Certify that TAB team complied with approved TAB plan and the procedures specified
and referenced in this Specification.
D. TAB Report Forms: Use standard forms from NEBB's "Procedural Standards for Testing,
Adjusting, and Balancing of Environmental Systems." Or from SMACNA's "HVAC Systems -
Testing,Adjusting,and Balancing."
E. Instrumentation Calibration: Calibrate instruments at least every six months or more frequently
if required by instrument manufacturer.
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1. Keep an updated record of instrument calibration that indicates date of calibration and the
name of party performing instrument calibration.
1.5 COORDINATION
A. Coordinate the efforts of factory-authorized service representatives for systems and equipment,
HVAC controls installers, and other mechanics to operate HVAC systems and equipment to
support and assist TAB activities.
B. Notice: Provide seven days' advance notice for each test. Include scheduled test dates and
times.
C. Perform TAB after leakage and pressure tests on air and water distribution systems have been
satisfactorily completed.
PART 2- PRODUCTS(Not Used)
PART 3-EXECUTION
3.1 EXAMINATION
A. Examine the Contract Documents to become familiar with Project requirements and to discover
conditions in systems'designs that may preclude proper TAB of systems and equipment.
1. Verify that balancing devices, such as test ports, gage cocks, thermometer wells, flow-
control devices,balancing valves and fittings, and manual volume dampers, are required
by the Contract Documents. Verify that quantities and locations of these balancing
devices are accessible and appropriate for effective balancing and for efficient system and
equipment operation.
B. Examine system and equipment installations to verify that they are complete and that testing,
cleaning,adjusting,and commissioning specified in individual Sections have been performed.
C. Examine HVAC system and equipment installations to verify that indicated balancing devices,
such as test ports, gage cocks, thermometer wells, flow-control devices, balancing valves and
fittings, and manual volume dampers, are properly installed, and that their locations are
accessible and appropriate for effective balancing and for efficient system and equipment
operation.
D. Examine systems for functional deficiencies that cannot be corrected by adjusting and
balancing.
E. Examine HVAC equipment to ensure that clean filters have been installed,bearings are greased,
belts are aligned and tight,and equipment with functioning controls is ready for operation.
F. Examine equipment for installation and for properly operating safety interlocks and controls.
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G. Report deficiencies discovered before and during performance of TAB procedures. Observe
and record system reactions to changes in conditions. Record default set points if different from
indicated values.
3.2 PREPARATION
3.3 GENERAL PROCEDURES FOR TESTING AND BALANCING
A. Perform testing and balancing procedures on each system according to the procedures contained
in NEBB's "Procedural Standards for Testing, Adjusting, and Balancing of Environmental
Systems" or SMACNA's "HVAC Systems - Testing, Adjusting, and Balancing" and this
Section.
B. Cut insulation, ducts, pipes, and equipment cabinets for installation of test probes to the
minimum extent necessary to allow adequate performance of procedures. After testing and
balancing,close probe holes and patch insulation with new materials identical to those removed.
Restore vapor barrier and finish according to insulation Specifications for this Project.
C. Mark equipment and balancing device settings with paint or other suitable, permanent
identification material,including damper-control positions,valve position indicators,fan-speed-
control levers,and similar controls and devices,to show final settings.
3.4 GENERAL PROCEDURES FOR BALANCING AIR SYSTEMS
A. Prepare test reports for both fans and outlets. Obtain manufacturer's outlet factors and
recommended testing procedures. Crosscheck the summation of required outlet volumes with
required fan volumes.
B. For variable-air-volume systems,develop a plan to simulate diversity.
C. Determine the best locations in main and branch ducts for accurate duct airflow measurements.
D. Check airflow patterns from the outside-air louvers and dampers and the return-and exhaust-air
dampers,through the supply-fan discharge and mixing dampers.
E. Verify that motor starters are equipped with properly sized thermal protection.
F. Check dampers for proper position to achieve desired airflow path.
G. Check for airflow blockages.
H. Check condensate drains for proper connections and functioning.
I. Check for proper sealing of air-handling unit components.
J. Check for proper sealing of air duct system.
K. Manually adjust deflectors in slot diffusers to achieve horizontal airflow.
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3.5 TOLERANCES
A. Set HVAC system airflow and water flow rates within the following tolerances:
1. Supply,Return,and Exhaust Fans and Equipment with Fans: Plus 5 to plus 10 percent.
2. Air Outlets and Inlets: 0 to minus 10 percent.
3. Heating-Water Flow Rate: 0 to minus 10 percent.
4. Cooling-Water Flow Rate: 0 to minus 5 percent.
3.6 FINAL REPORT
A. General: Typewritten, or computer printout in letter-quality font, on standard bond paper, in
three-ring binder,tabulated and divided into sections by tested and balanced systems.
B. Include a certification sheet in front of binder signed by the testing and balancing engineer.
1. Include a list of instruments used for procedures,along with proof of calibration.
C. General Report Data: In addition to form titles and entries, include the following data in the
final report,as applicable:
1. Title page.
2. Name and address of TAB firm.
3. Project name.
4. Project location.
5. Architect's/Engineer's name and address.
6. Contractor's name and address.
7. Report date.
8. Signature of TAB firm who certifies the report.
9. Table of Contents with the total number of pages defined for each section of the report.
Number each page in the report.
10. Summary of contents including the following:
a. Indicated versus final performance.
b. Notable characteristics of systems.
c. Description of system operation sequence if it varies from the Contract
Documents.
11. Notes to explain why certain final data in the body of reports varies from indicated
values.
12. Test conditions for fans and pump performance forms including the following:
a. Settings for outside-,return-,and exhaust-air dampers.
b. Conditions of filters.
c. Cooling coil,wet-and dry-bulb conditions.
d. Face and bypass damper settings at coils.
e. Fan drive settings including settings and percentage of maximum pitch diameter.
f. Inlet vane settings for variable-air-volume systems.
g. Settings for supply-air,static-pressure controller.
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h. Other system operating conditions that affect performance.
3.7 ADDITIONAL TESTS
A. Within 90 days of completing TAB, perform additional testing and balancing to verify that
balanced conditions are being maintained throughout and to correct unusual conditions.
B. Seasonal Periods: If initial TAB procedures were not performed during near-peak summer and
winter conditions, perform additional testing, inspecting, and adjusting during near-peak
summer and winter conditions.
END OF SECTION 230593
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SECTION 230700-HVAC INSULATION
PART 1 -GENERAL
1.1 SUMMARY
A. This Section includes pipe,duct,and equipment insulation.
1.2 SUBMITTALS
A. Product data for each type of mechanical insulation identifying k-value, thickness, jackets
(factory and field applied)and accessories.
1.3 QUALITY ASSURANCE
A. Fire Performance Characteristics: Conform to the following characteristics for insulation
including facings, cements, and adhesives, when tested according to ASTM E 84, by UL or
other testing or inspecting organization acceptable to the authority having jurisdiction. Label
insulation with appropriate markings of testing laboratory.
1. Interior Insulation: Flame spread rating of 25 or less and a smoke developed rating of 50
or less.
2. Exterior Insulation: Flame spread rating of 75 or less and a smoke developed rating of
150 or less.
1.4 COORDINATION
A. Coordinate size and location of supports, hangers, and insulation shields specified in Section
230529"Hangers and Supports for HVAC Piping and Equipment."
B. Coordinate clearance requirements with piping Installer for piping insulation application, duct
Installer for duct installation application, and equipment Installer for equipment insulation
application. Before preparing piping and ductwork Shop Drawings, establish and maintain
clearance requirements for installation of insulation.
1.5 SEQUENCING AND SCHEDULING
A. Schedule insulation application after pressure testing of piping and duct systems.
B. Schedule insulation application after installation and testing of heat trace tape.
C. Thermal-hanger shield inserts are specified in"Hangers and Supports." Inserts shall be installed
at the time of hanger installation.
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PART 2-PRODUCTS
2.1 MANUFACTURERS
A. Manufacturers: Subject to compliance with requirements, provide products by one of the
following:
1. Glass Fiber:
a. CertainTeed Corporation.
b. Knauf Fiberglass.
c. Manville/Schuller.
d. Owens-Corning Fiberglas Corporation.
e. E-Insulation.
2. Flexible Elastomeric Cellular:
a. Armacell LLC.
b. IMCOA Corporation.
c. Rubatex Corporation.
3. Calcium Silicate:
a. Industrial Insulation Group(The).
b. Johns Manville.
c. Owens-Corning Corporation.
4. Fire Protection System:
a. Certainteed Corporation.
b. Johns Manville.
c. Thermal Ceramics.
d. 3M Fire Barrier.
2.2 GLASS FIBER
A. Material: Inorganic glass fibers,bonded with a thermosetting resin.
B. Jacket: All-service, factory-applied, laminated glass-fiber-reinforced, flame-retardant kraft
paper and aluminum foil skrim backing having pressure sensitive self-sealing lap.
C. Board: ASTM C 612,Class 2,semi-rigid jacketed board.
1. Thermal Conductivity: 0.23 average maximum,at 75 deg F mean temperature. ...r
2. Density: 3.0 pcf average maximum.
D. Blanket: ASTM C 553,Type I,Class B-2,jacketed flexible blankets.
1. Thermal Conductivity: 0.27 at compressed thickness,at 75 deg F mean temperature.
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2. Density: 0.751b/cu. ft.
E. Preformed Pipe Insulation: ASTM C 547, Class 1, rigid pipe insulation, factory applied all-
service jacket with self seal lap.
1. Thermal Conductivity: 0.26 average maximum at 75 deg F mean temperature.
2. Density: 5 lb/cu. ft average maximum.
F. Vapor Barrier Coating: Waterproof coating recommended by insulation manufacturer for
outside service.
2.3 FLEXIBLE ELASTOMERIC CELLULAR
A. Material: Flexible expanded closed-cell structure with smooth skin on both sides.
1. Tubular Materials: ASTM C 534,Type I.
2. Sheet Materials: ASTM C 534,Type II.
B.- Thermal Conductivity: 0.25 average maximum at 75 deg F.
C. Coating: Water based latex enamel coating recommended by insulation manufacturer.
2.4 CALCIUM SILICATE
A. Material: ASTM C 533, Type I; inorganic, hydrous calcium silicate, non-asbestos fibrous
reinforcement; incombustible.
B. Form: Molded flat block,curved block,and grooved block as appropriate for surface.
C. Thermal Conductivity: 0.60 at 500 deg F.
D. Dry Density: 15.0 pcf maximum.
E. Compressive Strength: 60 psi minimum at 5 percent deformation.
F. Fire Performance Characteristics: Provide materials identical to those whose fire performance
characteristics have been determined, per test method indicated below, by UL or other testing
and inspecting organization acceptable to authorities having jurisdiction.
- 1. Test Method: ASTM E 84.
2. Flame Spread: 0.
3. Smoke Developed: 0.
G. Minimum Temperature Rating: 1,200 deg F.
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2.5 FIRE PROTECTION SYSTEM
A. Fire-Rated Blanket: High-temperature, flexible, blanket insulation with foil, scrim, kraft paper
jacket that is tested and certified to provide a 1-hour fire rating.
1. General: UL classified filler material, flame spread 5, smoke developed 5, R value per
ASTM C 518 -4.5 at 70 deg F.
2. Physical Properties: Service range to 2300 deg F, melting point of 3200 deg F, color
white.
3. Foil Physical Properties: Puncture resistance - Beach 100 units minimum, tensile
strength M.D. 40 lbs/in2 width average, C.D. 40 lb/in' width average, light reflectance
90.5percent.
4. System Components: Carbon steel banding,insulation pins and speed clips.
2.6 ADHESIVES
A. Flexible Elastomeric Cellular Insulation Adhesive: Solvent-based, contact adhesive
recommended by insulation manufacturer. Comply with MIL-A-24179A,Type II,Class 1.
B. Calcium Silicate Adhesive: Fibrous,sodium-silicate-based adhesive with a service temperature
range equal to material being bonded.
2.7 FIELD APPLIED JACKETS
A. PVC Jacketing: High-impact, ultra-violet-resistant PVC, 30-mils thick, roll stock ready for
shop or field cutting and forming to indicated sizes.
1. Mastic/Adhesive: As recommended by insulation manufacturer.
B. PVC Fitting Covers: Factory-fabricated fitting covers manufactured from 30-mil-thick, high-
impact,ultra-violet-resistant PVC.
1. Mastic around fitting to pipe insulation.
2.8 ACCESSORIES AND ATTACHMENTS
A. Bands: 3/4-inch wide,in one of the following materials compatible with jacket:
1. Aluminum: 0.007-inch thick.
2. 1/8-inch by 1/8-inch rapid penetrating point screws for non-vapor barrier application.
B. Wire: 14 gauge nickel copper alloy, 16 gauge, soft-annealed stainless steel,or 160 gauge, soft-
annealed galvanized steel.
C. Cupped Head Weld Pins- 1-1/2 inch diameter cupped head, mild, annealed steel with zinc
plating.
D. Corner Angles: 28 gauge, 1 inch by 1 inch aluminum, adhered to 2 inch by 2 inch kraft paper.
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E. Anchor Pins: Capable of supporting 20 pounds each. Provide anchor pins and speed washers
of sizes and diameters as recommended by the manufacturer for insulation type and thickness.
F. ASJ Tape: White vapor-retarder tape matching factory-applied jacket with acrylic adhesive,
complying with ASTM C 1136 and UL listed.
1. Width: 3 inches.
2. Thickness: 11.5 mils.
3. Adhesion: 90 ounces force/inch in width.
4. Elongation: 2 percent.
5. Tensile Strength: 40 lbf/inch in width.
6. ASJ Tape Disks and Squares: Precut disks or squares of ASJ tape.
G. Foil/Skrim/Kraft Tape: Vapor barrier tape with rubber adhesive and UL listed and 25/20 rated.
1. Width: 2 inches.
2. Thickness: 3.7 mils.
3. Adhesion: 85 ounces force/inch in width.
4. Elongation: 5 percent.
5. Tensile Strength: 45 lbf/inch in width.
2.9 SEALING COMPOUNDS-MASTIC
A. Vapor Barrier Compound: Water-based,fire-resistive composition.
1. Water Vapor Permeance: 0.08 perm maximum.
2. Temperature Range: Minus 20 to 180 deg F.
B. Weatherproof Sealant: Flexible-elastomer-based, vapor-barrier sealant designed to seal metal
joints. -
1. Water Vapor Permeance: 0.02 perm maximum.
2. Temperature Range: Minus 50 to 250 deg F.
3. Color: Aluminum.
PART 3-EXECUTION
3.1 PREPARATION
A. Surface Preparation: Clean,dry,and remove foreign materials such as rust,scale,and dirt.
3.2 INSTALLATION,GENERAL
A. Refer to schedules at the end of this Section for materials, forms, jackets, and thicknesses
required for each mechanical system.
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B. Select accessories compatible with materials suitable for the service. Select accessories that do
not corrode,soften,or otherwise attack the insulation or jacket in either the wet or dry state.
C. Install vapor barriers on insulated pipes, ducts, and equipment where indicated and defined in
insulation service chart.
D. Apply insulation material, accessories, and finishes according to the manufacturer's printed
instructions.
E. Seal joints and seams to maintain vapor barrier on insulation requiring a vapor barrier.
F. Seal penetrations for hangers, supports, anchors, and other projections in insulation requiring a
vapor barrier.
G. Keep insulation materials dry during application and finishing.
H. Items Not Insulated: Unless otherwise indicated do not apply insulation to the following
systems,materials,and equipment:
1. Metal ducts with duct liner. -
2. Flexible connectors for ducts and pipes.
3. Testing laboratory labels and stamps.
4. Nameplates and data plates.
5. Access panels and doors in air distribution systems.
6. Chrome-plated pipes and fittings,except for plumbing fixtures for the disabled.
7. Backflow prevention device.
3.3 PIPE INSULATION INSTALLATION,GENERAL
A. Tightly butt longitudinal seams and end joints.
B. Apply insulation continuously over fittings,valves,and specialties.
C. Apply insulation with a minimum number of joints.
D. Apply insulation with all service jackets as follows:
1. Pull jacket tight and smooth.
2. Cover circumferential joints with butt strips,at least 3 inches wide,and of same material
as insulation jacket.
3. Longitudinal Seams: Overlap seams at least 1-1/2-inches. Apply insulation with
longitudinal seams at bottom of pipe. Clean and dry surface to receive self-sealing lap.
4. At penetrations in jackets for thermometers and pressure gauges, fill and seal voids with
mastic.
5. Repair damaged insulation jackets, except metal jackets, by applying jacket material
around damaged jacket. Extend patch at least 2 inches in both directions beyond
damaged insulation jacket and around the entire circumference of the pipe.
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E. Roof Penetrations: Apply insulation for interior applications to a point even with the top of the
roof flashing. Seal with vapor barrier coating. Apply insulation for exterior applications butted
tightly to interior insulation ends. Extend metal jacket for exterior insulation outside roof
flashing at least 2 inches below top of roof flashing. Seal metal jacket to roof flashing with
vapor barrier coating.
F. Exterior Wall Penetrations: For penetrations of below grade exterior walls,terminate insulation
flush with mechanical sleeve seal. Seal terminations with vapor barrier coating.
G. Interior Walls and Partitions Penetrations: Apply insulation continuously through walls and
partitions,except fire-rated walls and partitions.
H. Fire-Rated Walls and Partitions Penetrations: Terminate insulation at penetrations through fire-
rated walls and partitions. Seal insulation ends with vapor barrier coating. Seal around
penetration with firestopping or fire-resistant joint sealer.
I. Floor Penetrations: Terminate insulation underside of floor assembly and at floor support at top
of floor.
J. Flanges,Fittings,and Valves-Interior Exposed and Concealed: Coat pipe insulation ends with
mastic. Apply premolded, precut, or field-fabricated segments of insulation around flanges,
unions,valves,and fittings. Make joints tight.
1. Use same material and thickness as adjacent pipe insulation.
2. Overlap nesting insulation by 2 inches or 1-pipe diameter,which ever is greater.
3. Insulate elbows with blanket insulation inserts.
4. Cover insulation, except for metal jacketed insulation, with PVC fitting covers and seal
circumferential joints with butt strips.
K. Hangers and Anchors: Apply insulation continuously through hangers and around anchor
attachments. For vapor barrier application piping,extend insulation on anchor legs a minimum
of 12 inches and taper and seal insulation ends.
1. Install insulation to tightly join the insert. Seal insulation to insulation inserts with
adhesive or sealing compound recommended by insulation material manufacturer. Refer
to"Hangers and Supports"for thermal-hanger shield inserts.
2. Cover inserts with jacket material matching adjacent pipe insulation. Install shields over
jacket,arranged to protect jacket from tear or puncture by hanger,support,and shield.
3.4 BELOW GROUND PIPE INSULATION INSTALLATION
A. General: The following are additional requirements for insulation applied to piping installed
below ground.
B. Terminate insulation at anchor blocks.
C. Apply insulation continuously through sleeves and manholes, except as specified above for
exterior wall penetrations.
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3.5 GLASS FIBER PIPE INSULATION INSTALLATION
A. Seal exposed seams and joint ends,with mastic.
3.6 FLEXIBLE ELASTOMERIC PIPE INSULATION INSTALLATION
A. Slip insulation on the pipe before making connections wherever possible. Seal joints with
adhesive. Where the slip-on technique is not possible,use longitudinally precut insulation and
apply to the pipe. Seal seams and joints with adhesive.
B. Valves, Fittings, and Flanges: Cut insulation segments from pipe or sheet insulation. Bond to
valve,fitting,and flange and seal joints with adhesive. Use prefabricated fittings if available.
1. Miter cut materials to cover soldered elbows and tees.
2. Fabricate sleeve fitting covers from flexible elastomeric cellular insulation for screwed
valves,fittings,and specialties. Miter cut materials. Overlap adjoining pipe insulation.
3.7 EQUIPMENT INSULATION INSTALLATION,GENERAL
A. Install board materials with a minimum number of joints.
B. Ensure insulation materials to fit as closely as possible to the equipment and to fit contours of
equipment. Stagger end joints.
C. Insulation Thicknesses Greater than 2 inches: Install insulation in multiple layers with
staggered joints.
D. Secure sections of insulation in place with bands spaced at 12 inch centers, except for flexible
elastomeric cellular insulation.
E. Protect exposed corners with corner angles under bands.
F. Manholes,Handholes,and Information Plates: Bevel and seal insulation ends around manholes,
handholes,ASME stamps,and nameplates.
G. Removable Insulation: Install insulation on components that require periodic inspecting,
cleaning, and repairing for easy removal and replacement without damage to adjacent
insulation.
H. Finishing: Except for flexible elastomeric cellular insulation, see Insulation schedule for
jacketing.
3.8 GLASS FIBER EQUIPMENT INSULATION INSTALLATION
A. Secure insulation with anchor pins and speed washers.
B. Space anchors at maximum intervals of 18 inches in both directions and not more than 3 inches
from edges and joints.
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3.9 DUCT INSULATION
A. Install block and board insulation as follows:
1. Adhesive and Band Attachment: Secure block and board insulation tight and smooth
with at least 50 percent coverage of adhesive. Install bands spaced 12 inches apart.
Protect insulation under bands and at exterior corners with metal corner angles. Fill
joints, seams, and chipped edges with vapor barrier compound. Install metal corner
angles on all outside corners to provide a neat finished appearance.
2. Speed Washers or Weld Pins Attachment: Secure insulation tight and smooth with speed
washers or welded pin attachments. Space anchor pins 18 inches apart each way and 3
inches from insulation joints. Apply mastic to insulation in contact, open joints,breaks,
punctures,and voids in insulation.
B. Blanket Insulation: Install tight and smooth. Secure to ducts having long sides or diameters as
follows:
1. 24 Inches and Larger: Anchor pins spaced 12 inches apart each way.
2. Overlap joints 3 inches.
- 3. Seal joints,breaks,and punctures with vapor barrier tape,matching jacket material.
3.10 CALCIUM SILICATE INSULATION INSTALLATION
A. Insulation Installation on Boiler Breechings,and Generator Exhaust Pipe:
1. Secure single-layer insulation with stainless-steel bands at 12 inch intervals and tighten
bands without deforming insulation material.
2. Install 2-layer insulation with joints tightly butted and staggered at least 3 inches. Secure
inner layer with wire spaced at 12 inch intervals. Secure outer layer with stainless-steel
bands at 12 inch intervals.
B. Insulation Installation on Straight Pipes and Tubes:
1. Secure single-layer insulation with stainless-steel bands at 12 inch intervals and tighten
bands without deforming insulation materials.
2. Install 2-layer insulation with joints tightly butted and staggered at least 3 inches. Secure
inner layer with wire spaced at 12 inch intervals. Secure outer layer with stainless-steel
bands at 12 inch intervals.
3.11 - FIELD APPLIED JACKETS
A. Install metal jacket with 2 inch overlap at longitudinal and butt joints. Overlap longitudinal
joints to shed water. Seal butt joints with weatherproof sealant recommended by insulation
manufacturer. Secure jacket with stainless-steel draw bands 12 inches on center and at butt
joints.
B. Install the PVC jacket with 1 inch overlap at longitudinal and butt joints and seal with adhesive.
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3.12 FINISHES
A. Flexible Elastomeric Cellular Insulation: After adhesive has fully cured, apply 2 coats of
manufacturer's recommended protective coating to exposed insulation.
B. Exterior insulated ductwork and equipment shall have a weatherproof coating applied over the
insulation.
3.13 FIRE-RATED INSULATION SYSTEM INSTALLATION
A. Where fire-rated insulation system is indicated, secure system to ducts and duct hangers and
supports to maintain a continuous UL-listed fire rating.
B. Insulate duct access panels and doors to achieve same fire rating as duct.
3.14 INSULATION SCHEDULES
A. General: Abbreviations used in the following schedules include:
1. Field-Applied Jackets: PVC-PVC,A-Aluminum, SS - Stainless Steel,Glass Cloth.
2. Pipe Sizes: NPS-Nominal Pipe Size.
3. Materials: GF - Glass Fiber, FE - Flexible Elastomeric, CG - Cellular Glass, CS -
Calcium Silicate,FPS-Fire Protection System.
B. Pipe Insulation:
APPLICATION NOMINAL INSULATION THICKNESS INSERTS VAPOR FIELD
PIPE SIZE MATERIAL (INCHES) OR BARRIER APPLIED
SHIELDS JACKET
NOTE 1
DOMESTIC ALL GF or FE 1 NO YES NONE
COLD WATER
RAIN WATER ALL GF or FE 1 NO NO NONE
AND
OVERFLOW
DOMESTIC ALL GF or FE 1 NO NO NONE
HOT WATER
DOMESTIC HW ALL GF or FE 1 NO NO NONE
RECIRC.
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APPLICATION NOMINAL INSULATION THICKNESS INSERTS VAPOR FIELD
PIPE SIZE MATERIAL (INCHES) OR BARRIER APPLIED
SHIELDS JACKET
NOTE 1
A,SS
MUFFLER / 1 TO 10 CS 4 NO YES OR
SILENCER NONE
PLUMBING ALL GF 1 NO NO NONE
VENTS WITHIN
6 FT OF ROOF
OUTLET
REFRIGERANT AI.I. FE 3/4 NO NO NONE
SUCTION AND
HOT GAS
NOTE 1: INSERTS AND SHIELDS ARE IN SECTION 230529 - HANGERS AND SUPPORTS
FOR PLUMBING AND HVAC PIPING AND EQUIPMENT AND SHALL BE PROVIDED BY
THE INSULATION CONTRACTOR.
C. Equipment Insulation:
APPLICATION TYPE INSULATION THICKNESS VAPOR FIELD
MATERIAL (INCHES) BARRIER APPLIED
JACKET
ROOF DRAIN BOWLS AND BLANKET GF 1-1/2 YES NONE
PANS
HOT EQUIPMENT,TANKS BOARD GF 2 NO GC
D. Duct Systems:
APPLICATION TYPE INSULATION THICKNESS VAPOR FIELD
MATERIAL (INCHES) BARRIER APPLIED
1 JACKET
LOW VELOCITY DUCTS BLANKET GF 1-1/2 NO NONE
DOWNSTREAM OF VAV
TERMINALS, HEAT
PUMPS,FAN COIL UNITS
TYPE I HOOD BLANKET/ FPS 1-HR FIRE NO INTEGRAL
(GREASE)EXHAUST BOARD RATING
NOTE 1: INSERTS AND SHIELDS ARE IN SECTION 230529 - HANGERS AND SUPPORTS
FOR PLUMBING AND HVAC PIPING AND EQUIPMENT AND SHALL BE PROVIDED BY
THE INSULATION CONTRACTOR.
END OF SECTION 230700
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SECTION 230993- SEQUENCE OF OPERATIONS FOR HVAC CONTROLS
PART 1 -GENERAL
1.1 DESCRIPTION OF WORK
A. Sequence of operation is hereby defined as the manner and method by which controls function.
Requirements for each type of control system operation are specified in this Section.
PART 2-PRODUCTS(Not Used)
PART 3-EXECUTION
3.1 PACKAGED ROOFTOP AIR HANDLING UNITS
A. Each unit is to be controlled from the buildings energy management system via temperature and
humidity sensors. Temperature Control Contractor shall install, wire, and program energy
management system to control as indicated below,all points shall be adjustable.
General Occupied Un-Occupied
Unit Area Served Time Heat Cool Dehumid Fan Time Heat Cool Dehumid Fan
RTU-1 Main Sales 7:00 72 74 52 Deg F On 10:00 68 76 52 Deg F Cycle on
AM Deg F Deg F Dewpoint PM Deg F Deg F Dewpoint Call
RTU-2 Main Sales 7:00 72 74 52 Deg F On 10:00 68 76 52 Deg F Cycle on
AM Deg F Deg F Dewpoint PM Deg F Deg F Dewpoint Call
RTU-3 Main Sales 7:00 72 74 52 Deg F On 10:00 68 76 52 Deg F Cycle on
AM Deg F Deg F Dewpoint PM Deg F Deg F Dewpoint Call
RTU-4 Main Sales 7:00 72 74 52 Deg F On 10:00 68 76 52 Deg F Cycle on
AM Deg F Deg F Dewpoint PM Deg F Deg F Dewpoint Call
RTU-5 Entry 7:00 70 74 52 Deg F On 10:00 68 80 52 Deg F Cycle on
Vestibule AM Deg F Deg F Dewpoint PM Deg F Deg F Dewpoint Call
RTU-6 Checkstands 7:00 72 74 52 Deg F On 10:00 65 80 52 Deg F Cycle on
AM Deg F Deg F Dewpoint PM Deg F Deg F Dewpoint Call
RTU-7 Employee 6:00 70 75 N/A — On 10:00 65 80 N/A Cycle on
Lounge AM Deg F Deg F PM Deg F Deg F Call
RTU-8 Conference 6:00 70 75 N/A On 10:00 65 80 N/A Cycle on
/Signmakers AM Deg F Deg F PM Deg F Deg F Call
RTU-9 Seating 7:00 72 74 N/A On 10:00 65 80 N/A Cycle on
AM Deg F Deg F PM Deg F Deg F Call
RTU-10 Mezzanine 7:00 70 75 N/A On 10:00 65 80 N/A Cycle on
Offices AM Deg F Deg F PM Deg F Deg F Call
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General O ccupied Un-Occupied
RTU-11 Kitchen 6:00 r 70 75 N/A On 10:00 65 80 N/A Cycle on
AM Deg F Deg F PM Deg F Deg F Call
RTU-12 Bakery 6:00 70 75 N/A On 10:00 65 80 N/A Cycle on
Serv./Prep AM Deg F Deg F PM Deg F Deg F Call
B. Supply Fan Start/Stop: During occupied mode, operate supply fan continuously. Upon loss of
supply fan status, the outdoor air damper shall close, the return air damper shall open, and the
heating and cooling shall be disabled.
C. Fan Discharge Low Limit: De-energize the supply fan when the discharge temperature drops
below 35 deg F.
D. Smoke Detector: A smoke detector shall be located in the return plenum. Upon activation of
the smoke detector,the supply fan is de-energized.
E. Motorized Outdoor Air Damper Control:When the space is in the occupied mode, the outdoor
air damper shall be open. While the space is in Un-occupied mode,the outdoor air damper shall
be open. Maintain scheduled minimum outdoor air during occupied times as indicated in the
Packaged Rooftop Unit Schedule.
F. Space Temperature Control: Control the heating gas valve, mechanical cooling and reheat
capabilities in sequence to satisfy room temperature set point.
. . G. Space Humidity Control: Where shown in Rooftop Package Unit Schedule, activate the
dehumidification control sequence installed in the packaged in the rooftop package unit to
satisfy room humidity set point. Setpoint shall be 52 deg F wet bulb.
H. Unoccupied Mode: During unoccupied mode, close the outside air damper. On a call for
heating, cooling, or dehumidification, cycle the fan and cooling/heating/dehumidification as
required to maintain set back space temperature or humidity level.
3.2 UNIT HEATER CONTROL
A. Each unit is to be controlled from the buildings energy management system via temperature
sensor. Temperature Control Contractor shall install, wire, and program energy management
system to control as indicated below.
General Occupied Unoccupied
Unit Area Served Time Heat Fan Time Heat Fan
UH-1 Receiving 7:00 70 Cycle on Call 10:00 65 Cycle on Call
AM Deg F PM Deg F
UH-2 Receiving 7:00 70 Cycle on Call 10:00 65 Cycle on Call
AM Deg F PM Deg F
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General Occu ied Unoccupied
UH-3 Receiving 7:00 70 Cycle on Call 10:00 65 Cycle on Call
AM Deg F PM Deg F
B. Unit Heater Control: Provide single-temperature room thermostat to cycle fan motor to
maintain constant space temperature.
3.3 ELECTRIC RADIANT HEATER
A. Radiant Heater Control: Radiant heater to be controlled via a vendor provided smart occupancy
sensor with temperature lock out. The controller shall activate heater when an occupant is
present. The lock out temperature shall be set at 65 deg F to inhibit unit operation above this set
point. The timer shall be set for 10 minute minimum on time per activation.
3.4 GAS-FIRED RADIANT HEATER
A. Radiant Heater Control: Each heater is to be controlled from the building's energy management
system via outdoor air temperature. In addition to outside air temperature, the heater's control
power shall be interlocked with an occupancy sensor,by electrical contractor,to enable heaters
only in the presence of people. Temperature Control Contractor shall install,wire,and program
energy management system to control as indicated below,all points shall be adjustable.
1. Occupied Mode (7:OOAM-10:OOPM): The energy management system shall enable
heaters to run when temperature is below 65 deg F. When outside air temperature is
above 65 deg F,the heater shall be off.
2. Unoccupied Mode(10:OOPM-7:OOAM):The heaters shall be off.
3.5 EXHAUST FAN CONTROL
EF-1 Employee E.C. to interlock to both Men's and Women's restroom light
Restroom switch with 0 to 10 minute time delay switch, initially set at
5 minutes.
EF-2 Signmaker E.C.to provide wall-mounted timer switch and wire to fan.
EF-3 Office E.C. to interlock to both Men's and Women's restroom light
restrooms switch with 0 to 10 minute time delay switch, initially set at
5 minutes.
EF-4 Customer E.C. to interlock to both Men's and Women's restroom light
Restrooms switch with 0 to 10 minute time delay switch, initially set at
5 minutes.
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EF-5 Pizza Oven E.C. to interlock exhaust fan operation to pizza oven per
manufacturer's recommended installation instructions.
EF-6 Kitchen E.C. to wire exhaust fan to a hood mounted control panel. A
Hood#2A factory-mounted heat sensor will override the fan switch and
automatically start the exhaust fan and reduce/increase fan
capacity based on level of heat sensed.
EF-7 Kitchen E.C. to wire exhaust fan to a hood mounted control panel. A
Hood#2B factory-mounted heat sensor will override the fan switch and
automatically start the exhaust fan and reduce/increase fan
capacity based on level of heat sensed.
EF-8 Kitchen E.C. to wire exhaust fan to a hood mounted control panel. A
Hood#2C factory-mounted heat sensor will override the fan switch and
automatically start the exhaust fan and reduce/increase fan
capacity based on level of heat sensed.
EF-9 Kitchen E.C. to wire exhaust fan to a hood mounted control panel. A
- Hood#2D factory-mounted heat sensor will override the fan switch and
automatically start the exhaust fan and reduce/increase fan
capacity based on level of heat sensed.
EF-10 Bakery Oven E.C. to interlock exhaust fan operation to oven per
manufacturer's recommended installation instructions.
EF-11 Dishwasher E.C. to interlock exhaust fan to dishwasher per manufacturer's
Hood recommended installation instructions.
EF-12 Smoker E.C. to wire exhaust fan to a hood mounted control panel. A
Hood factory-mounted heat sensor will override the fan switch and
automatically start the exhaust fan exhaust fan and
reduce/increase fan capacity based on level of heat sensed.
EF-13 Compressor E.C. to wire exhaust fan to a close on rise thermostat set at
Room 85 deg F.
3.6 INLINE FAN CONTROL
A. E.C. to provide relay switch to allow on/off control via occupied/unoccupied schedule. Fan
shall fun continuously during occupied hours and shall be off during unoccupied hours.
3.7 MAKE-UP AIR UNIT CONTROL
MAU-1 Unit is provided with packaged controls including discharge air temperature
sensor,discharge air humidity and room humidity sensor. Temperature Control
Contractor shall install and wire room humidity sensor and program controls as
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follows:
• Occupied Mode (7:OOAM-10:00PM): Enable unit to operate. Supply
fan runs continuously with inlet air damper full open.
• Unoccupied Mode (10:00PM-7:OOAM): Disable the unit. Supply fan
is off with inlet air damper full closed.
MAU-2 Unit shall be interlocked to hood control panel for automatic activation. Unit
shall have integral controls to maintain supply air temperature of 65 deg F.
MAU-3 Unit shall be interlocked to hood control panel for automatic activation. Unit
shall have integral controls to maintain supply air temperature of 60 deg F.
END OF SECTION 230993
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SECTION 231123 -FACILITY NATURAL GAS PIPING
PART 1 -GENERAL
1.1 RELATED DOCUMENTS
A. Drawings and general provisions of the Contract, including General and Supplementary
Conditions and Division 01 Specification Sections,apply to this Section.
1.2 SUMMARY
A. This Section includes fuel gas piping,specialties,and accessories within the building.
B. Related Sections include the following:
1. Division 23 Section "Meters and Gages for HVAC Piping" for pressure gages. _
2. Pipe,tube,fittings and joining materials.
3. Piping specialties and pressure regulators.
1.3 PROJECT CONDITIONS
A. Gas System Pressures: Two pressure ranges. Primary pressure is more than 2.0 psig but not
more than 5.0 psig, and is reduced to secondary pressure of more than 0.5-psig but not more
than 2.0 psig.
B. Design values of fuel gas supplied for these systems are as follows:
1. Nominal Heating Value: 1000 Btu/cu. ft.
2. Nominal Specific Gravity: 0.6.
1.4 SUBMITTALS
A. Product Data: For the following:
1. Pressure regulators. Include pressure rating,capacity,and settings of selected models.
2. Operation and Maintenance Data: For natural gas specialties to include in_O and M
manuals.
1.5 QUALITY ASSURANCE
A. ANSI Standard: Comply with ANSI Z223.1, "National Fuel Gas Code."
B. IAS Standard: Provide components listed in IAS's "Directory of A. G. A. and C. G. A Certified
Appliances and Accessories"if specified to be IAS listed.
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C. UL Standard: Provide components listed in UL's "Gas and Oil Equipment Directory" if
specified to be UL listed.
1.6 DELIVERY,STORAGE,AND HANDLING
A. Handling Flammable Liquids: Remove and legally dispose of liquids from drips in existing gas
piping. Handle cautiously to avoid spillage and ignition. Notify fuel gas supplier. Handle
flammable liquids used by Installer with proper precautions and do not leave on premises from
end of one day to beginning of next day.
1.7 COORDINATION
A. Existing Utilities: Do not interrupt utilities serving facilities occupied by Owner or others
unless permitted under the following conditions and then only after arranging to provide
temporary utility services according to requirements indicated:
B. Coordinate size and location of concrete bases.
PART 2-PRODUCTS
2.1 MANUFACTURERS
A. Available Manufacturers: Subject to compliance with requirements, manufacturers offering
products that may be incorporated into the Work include,but are not limited to,the following:
1. Appliance Connector Valves:
a. American Valve.
b. B&K Industries,Inc.
c. Brass Craft Manufacturing Co.
d. Cimberio Valves, S.P.A.
e. Conbraco Industries,Inc.;Apollo Div.
f. E.M.Plastic and Electric Products,Ltd.;Neo Valve Div.
g. Frey: John M. Frey Co.
h. Jomar International,Ltd.
i. Key Gas Components,Inc.
j. Legend Valve and Fitting,Inc.
k. McDonald: A.Y.McDonald Mfg.Co
1. Mueller Co.;Mueller Gas Products Div.
m. Newman Hattersley,Ltd.;Specialty Valve Div.
n. Robert Manufacturing Co.
o. State Metals,Inc.
p. Watts Industries,Inc.;Water Products Div.
2. Gas Valves,NPS 2 and Smaller:
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a. BMI Canada,Inc.
b. Crane Valves.
c. Dungs: Karl Dungs,Inc.
d. Flow Control Equipment,Inc.
e. Grinnell Corp.
f. Honeywell,Inc.
g. Jomar International,Ltd.
h. Kitz Corp.of America.
i. Legend Valve and Fitting,Inc.
j. Lyall: R.W.Lyall&Co.,Inc.
k. McDonald: A.Y. McDonald Mfg.Co.
1. Milwaukee Valve Co.,Inc.
m. Mueller Co.;Mueller Gas Products Div.
n. Nibco,Inc.
o. Red-White Valve Corp.
p. Velan Valve Corp.
q. Watts Industries,Inc.;Water Products Div.
3. Electrically Operated Automatic Gas Valves with operator for activation by Appliance
Automatic shut-off device:
a. ASCO General Controls.
b. ASCOLECTRIC,Ltd.
c. Automatic Switch Co.
d. Dungs: Karl Dungs,Inc.
e. Eaton Corp.;Controls Div.
f. Eclipse Combustion,Inc.
g. GPS Gas Protection Systems,Inc.
h. Honeywell,Inc.
i. Johnson Controls, Inc.
j. Red Hat.
4. Line Pressure Regulators:
a. American Meter Co.
b. Donkin: Bryan Donkin RMG Canada,Ltd.
c. Eclipse Combustion,Inc.
d. Equimeter,Inc.
e. Fisher Controls International,Inc.
f. Maxitrol Co.
g. National Meter.
h. Richards Industries,Inc.;Jordan Valve Div.
i. Schlumberger Industries;Gas Div.
5. Appliance Pressure Regulators:
a. Canadian Meter Co.,Inc.
b. Eaton Corp.;Controls Div.
c. Harper Wyman Co.
d. Maxitrol Co.
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e. SCP,Inc.
2.2 PIPING MATERIALS
A. Refer to Part 3 "Piping Applications" Article for applications of pipe, tube, fitting, and joining
materials.
2.3 PIPES,TUBES,FITTINGS,AND JOINING MATERIALS
A. Steel Pipe: ASTM A 53;Type E or S;Grade B; Schedule 40;black.
1. Malleable-Iron Threaded Fittings: ASME B16.3, Class 150, standard pattern, with
threaded ends according to ASME B1.20.1.
2. Unions: ASME B16.39, Class 150, malleable iron with brass-to-iron seat, ground joint,
and threaded ends according to ASME B1.20.1.
3. Cast-Iron Flanges and Flanged Fittings: ASME B16.1,Class 125.
4. Steel Welding Fittings: ASME B16.9,wrought steel or ASME B16.11,forged steel.
5. Steel Threaded Fittings: ASME B16.11, forged steel with threaded ends according to
ASME B1.20.1.
6. Joint Compound and Tape: Suitable for natural gas.
7. Steel Flanges and Flanged Fittings: ASME B16.5.
8. Gasket Material: Thickness,material,and type suitable for natural gas.
B. Transition Fittings: Type,material,and end connections to match piping being joined.
C. Common Joining Materials: Refer to Division 23 Section "Common Work Results for
Plumbing and HVAC"for joining materials not in this Section.
2.4 PIPING SPECIALTIES
A. Flexible Connectors: ANSI Z21.24,copper alloy.
B. Quick-Disconnect Devices: ANSI Z21.41,convenience outlets and matching plug connector.
2.5 SPECIALTY VALVES
A. Valves,NPS 2 and Smaller. Threaded ends according to ASME B1.20.1 for pipe threads.
B. Valves,NPS 2-1/2 and Larger: Flanged ends according to ASME B16.5 for steel flanges and
according to ASME B 16.24 for copper and copper-alloy flanges.
C. Appliance Connector Valves: ANSI Z21.15 and IAS listed.
D. Gas Stops: Bronze body with AGA stamp,plug type with bronze plug and flat or square head,
ball type with chrome-plated brass ball and lever handle, or butterfly valve with stainless-steel
disc and fluorocarbon elastomer seal and lever handle;2 psig minimum pressure rating.
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E. Gas Valves, NPS 2 and Smaller: ASME B 16.33 and IAS-listed bronze body and 125 psig
pressure rating.
F. General-Duty Valves,NPS 2-1/2 and Larger: ASME B16.38, cast-iron body, suitable for fuel
gas service,with"WOG"indicated on valve body,and 125 psig pressure rating.
1. Gate Valves: MSS SP-70,OS&Y type with solid wedge.
2. Butterfly Valves: MSS SP-67,lug type with lever handle.
G. Automatic Gas Valves: ANSI Z21.21, with electrical operator for actuation by appliance
automatic shutoff device.
H. Electrically Operated Gas Valves: UL 429, bronze, aluminum, or cast-iron body solenoid
valve; 120-V ac, 60 Hz, Class B, continuous-duty molded coil. Include NEMA ISC 6, Type 4,
coil enclosure and electrically opened and closed dual coils. Valve position shall normally be
closed.
2.6 PRESSURE REGULATORS
A. Description: Single stage and suitable for fuel gas service. Include steel jacket and corrosion-
resistant components,elevation compensator,and atmospheric vent.
1. NPS 2 and Smaller: Threaded ends according to ASME B1.20.1 for pipe threads.
2. Service Pressure Regulators: ANSI Z21.80. Include 100 psig minimum inlet pressure
rating.
3. Line Pressure Regulators: ANSI Z21.80 with 5 psig minimum inlet pressure rating.
4. Appliance Pressure Regulators: ANSI Z21.18. Regulator may include vent limiting
device,instead of vent connection,if approved by authorities having jurisdiction.
B. Pressure Regulator Vents: Factory or field-installed,corrosion-resistant screen in opening if not
connected to vent piping.
PART 3-EXECUTION
3.1 PREPARATION
A. Close equipment shutoff valves before turning off fuel gas to premises or section of piping.
Perform leakage test as specified in "Field Quality Control" Article to determine that all
equipmentis turned off in affected piping section.
B. Comply with ANSI 223.1, "Prevention of Accidental Ignition" Paragraph.
3.2 PIPING APPLICATIONS
A. Flanges, unions, transition, and special fittings with pressure ratings same as or higher than
system pressure rating may be used in applications below,unless otherwise indicated.
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B. Fuel Gas Piping,0.5-psig or Less: Use the following:
1. NPS 1/2 and Smaller: NPS 3/4 steel pipe,malleable-iron threaded fittings, and threaded
joints.
2. NPS 3/4 and NPS 1: Steel pipe,malleable-iron threaded fittings,and threaded joints.
3. NPS 1-1/4 to NPS 2: Steel pipe,malleable-iron threaded fittings,and threaded joints.
4. NPS 2-1/2 to NPS 4: Steel pipe,steel welding fittings,and welded joints.
5. Larger Than NPS 4: Steel pipe,steel welding fittings,and welded joints.
C. Fuel Gas Piping 2 to 5 psig: Use the following:
1. NPS 2 and Smaller: Steel pipe,malleable-iron threaded fittings,and threaded joints.
2. NPS 2-1/2 and Larger: Steel pipe,steel welding fittings and welded joints.
3.3 VALVE APPLICATIONS
A. Appliance Shutoff Valves for Pressure 0.5-psig or Less: Appliance connector valve or gas stop.
B. Piping Line Valves,NPS 2 and Smaller: Gas valve.
C. Piping Line Valves,NPS 2-1/2 and Larger: Plug valve or general-duty valve.
3.4 SERVICE ENTRANCE PIPING
A. Extend fuel gas piping and connect to fuel gas distribution for service entrance to building.
1. Exterior fuel gas distribution system piping,service pressure regulator,and service meter
will be provided by gas utility.
B. Install dielectric fitting downstream from and adjacent to each service meter unless meter is
supported from service-meter bar with integral dielectric fitting. Install shutoff valve
downstream from adjacent to dielectric fitting. Dielectric fittings are specified in Division 23
Section"Common Work Results for Plumbing and HVAC."
3.5 PIPING INSTALLATION
A. Refer to Division 23 Section "Common Work Results for Plumbing and HVAC" for basic
piping installation requirements.
B. Concealed Locations: Except as specified below,install concealed gas piping in airtight conduit
constructed of Schedule 40, seamless, black steel pipe with welded joints. Vent conduit to
outside and terminate with screened vent cap.
1. Above-Ceiling Locations: Gas piping may be installed in accessible spaces, subject to
approval of authorities having jurisdiction, whether or not such spaces are used as
plenums. Do not locate valves above ceilings.
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2. In Floors: Gas piping with welded joints and protective wrapping specified in"Protective
Coating" Article in Part 2 may be installed in floors, subject to approval of authorities
having jurisdiction. Surround piping cast in concrete slabs with minimum of 1-1/2 inches
of concrete. Piping may not be in physical contact with other metallic structures such as
reinforcing rods or electrically neutral conductors. Do not embed piping in concrete slabs
containing quick-set additives or cinder aggregate.
3. In Floor Channels: Gas piping may be installed in floor channels, subject to approval of
authorities having jurisdiction. Channels must have cover and be open to space above
cover for ventilation.
4. In Partitions: Do not install concealed piping in solid partitions. Protect tubing from
physical damage when installed inside partitions or hollow walls.
a. Exception: Tubing passing through partitions or walls.
5. In Walls: Gas piping with welded joints and protective wrapping specified in"Protective
Coating" Article in Part 2 may be installed in masonry walls, subject to approval of
authorities having jurisdiction.
6. Prohibited Locations: Do not install gas piping in or through circulating air ducts,clothes
or trash chutes, chimneys or gas vents (flues), ventilating ducts, or dumbwaiter or
elevator shafts. -
a. Exception: Accessible above-ceiling space specified above.
C. Drips and Sediment Traps: Install drips at points where condensate may collect. Include outlets
of service meters. Locate where readily accessible for cleaning and emptying. Do not install
where condensate would be subject to freezing.
1. Construct drips and sediment traps using tee fitting with bottom outlet plugged or capped.
Use minimum-length nipple of 3 pipe diameters, but not less than 3 inches long, and
same size as connected pipe. Install with space between bottom of drip and floor for
removal of plug or cap. -
D. Conceal pipe installations in walls, pipe spaces, utility spaces, above ceilings, below grade or
floors,and in floor channels,unless indicated to be exposed to view.
E. Install fuel gas piping at uniform grade of 0.1 percent slope upward toward risers.
F. Use eccentric reducer fittings to make reductions in pipe sizes. Install fittings with level side
down.
G. Connect branch piping from top or side of horizontal piping.
H. Install unions in pipes NPS 2 and smaller, adjacent to each valve, at final connection to each
piece of equipment,and elsewhere as indicated. Unions are not required on flanged devices.
I. Install strainer on inlet of each line pressure regulator and automatic and electrically operated
valve.
J. Install pressure gage downstream from each line pressure regulator.
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K. Install flanges on valves,specialties,and equipment having NPS 2-1/2 and larger connections.
L. Install vent piping for gas pressure regulators and gas trains, extend outside building, and vent
to atmosphere. Terminate vents with turned-down, reducing-elbow fittings with corrosion-
resistant insect screens in large end.
M. Install containment conduits for gas piping below slabs, within building, in gas tight conduits
extending minimum of 4 inches outside building, and vented to atmosphere. Terminate vents
with turned-down, reducing-elbow fittings with corrosion-resistant insect screens in large end.
Prepare and paint outside of conduits with coal-tar,epoxy-polyamide paint according to SSPC-
Paint 16.
3.6 JOINT CONSTRUCTION
A. Refer to Division 23 Section "Common Work Results for Plumbing and HVAC" for basic
piping joint construction.
B. Use materials suitable for fuel gas.
1. Brazed Joints: Make with brazing alloy with melting point greater than 1000 deg F.
Brazing alloys containing phosphorus are prohibited.
3.7 HANGER AND SUPPORT INSTALLATION
A. Refer to Division 23 Section"Hangers and Supports for HVAC Piping and Equipment"for pipe
hanger and support devices.
B. Install hangers for horizontal steel piping with the following maximum spacing and minimum
rod sizes:
1. NPS 1 and Smaller: Maximum span,96 inches;minimum rod size,3/8-inch.
2. NPS 1-1/4: Maximum span, 108 inches;minimum rod size,3/8-inch.
3. NPS 1-1/2 and NPS 2: Maximum span, 108 inches;minimum rod size,3/8-inch.
4. NPS 2-1/2 to NPS 3-1/2: Maximum span, 10 feet;minimum rod size, 1/2-inch.
3.8 CONNECTIONS
A. Drawings indicate general arrangement of fuel gas piping,fittings,and specialties.
B. Install piping adjacent to appliances to allow service and maintenance.
C. Connect piping to appliances using gas with shutoff valves and unions. Install valve upstream
from and within 72 inches of each appliance. Install union downstream from valve.
D. Sediment Traps: Install tee fitting with capped nipple in bottom to form drip, as close as
practical to inlet of each appliance using gas.
E. Ground equipment.
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1. Tighten electrical connectors and terminals according to manufacturer's published torque-
tightening values. If manufacturer's torque values are not indicated, use those specified
in UL 486A and UL 486B.
2. Do not use gas pipe as grounding electrode.
3.9 FIELD QUALITY CONTROL
A. Inspect, test, and purge piping according to ANSI Z223.1, Part 4 "Inspection, Testing, and
Purging," and requirements of authorities having jurisdiction.
B. Repair leaks and defects with new materials and retest system until satisfactory results are
obtained.
C. Report test results promptly and in writing to Architect and authorities having jurisdiction.
D. Verify capacities and pressure ratings of service meters, pressure regulators, valves, and
specialties.
E. Verify correct pressure settings for pressure regulators.
F. Verify that specified piping tests are complete.
3.10 ADJUSTING
A. Adjust controls and safety devices. Replace damaged and malfunctioning controls and safety
devices.
END OF SECTION 231123
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SECTION 233113-METAL DUCTS
IPART 1 -GENERAL
I1.1 RELATED DOCUMENTS
A. Drawings and general provisions of the Contract, including General and Supplementary
Conditions and Division 01 Specification Sections,apply to this Section.
1.2 SUMMARY
I
A. Section Includes:
1. Rectangular ducts and fittings.
2. Single-wall round ducts and fittings.
3. Duct liner. _
1.3 DEFINITIONS
A. NUSIG: National Uniform Seismic Installation Guidelines.
1.4 WORK INCLUDED
A. Provide an installed duct system which will supply the air quantities indicated by the Drawings
and have the lowest possible friction loss with the least possible leakage loss. System static
pressure loss for each system shall not exceed that which is indicated in the equipment schedule
as external static pressure or in the fan schedule as static pressure and shall include the losses of
all accessories. Friction losses shall be minimized by reduction in the number of offsets and
elbows by pre-planning the duct system installation and coordination with other trades to
prevent interferences. Maintain access to accessories requiring maintenance, service, and
inspection. Radius elbows are preferred for turns to minimize friction, noise, and vibrations,
and especially for sections having large volume or higher velocities and sections which may
have turbulence.
B. Provide and/or construct materials, ductwork, joints, transformations, splitters, dampers, and
access doors as specified herein for the sheet metal ductwork as shown on Drawings.
1.5 SUBMITTALS
A. Shop Drawings:
1. Ductwork fabrication shop standards.
2. Fittings.
3. Reinforcement and spacing.
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4. Seam and joint construction.
5. Penetrations through fire-rated and other partitions.
6. Equipment installation based on equipment being used on Project.
7. Duct accessories,including access doors and panels.
8. Hangers and supports, including methods for duct and building attachment, vibration
isolation,and seismic restraints.
1.6 QUALITY ASSURANCE
A. Welding Qualifications: Qualify procedures and personnel according to AWS D1.1/D1.1M,
"Structural Welding Code- Steel," for hangers and supports, AWS D9.1M/D9.1, "Sheet Metal
Welding Code,"for duct joint and seam welding.
B. NFPA Compliance:
1. NFPA 90A,"Installation of Air Conditioning and Ventilating Systems."
2. NFPA 90B,"Installation of Warm Air Heating and Air Conditioning Systems."
3. Comply with NFPA 96,"Ventilation Control and Fire Protection of Commercial Cooking
Operations,"Ch.3,"Duct System,"for range hood ducts,unless otherwise indicated.
PART 2-PRODUCTS
2.1 MANUFACTURERS
A. In other Part 2 articles where titles below introduce lists, the following requirements apply to
product selection:
1. Available Manufacturers: Subject to compliance with requirements, manufacturers
offering products that may be incorporated into the Work include,but are not limited to,
manufacturers specified.
2.2 SHEET METAL MATERIALS
A. Comply with SMACNA's "HVAC Duct Construction Standards--Metal and Flexible" for
acceptable materials, material thicknesses, and duct construction methods, unless otherwise
indicated. Sheet metal materials shall be free of pitting, seam marks, roller marks, stains,
discolorations,and other imperfections.
B. Galvanized Sheet Steel: Comply with ASTM A 653/A 653M.
1. Galvanized Coating Designation: G60.
2. Finishes for Surfaces Exposed to View: Mill phosphatized.
C. Carbon-Steel Sheets: Comply with ASTM A 1008/A 1008M, with oiled, matte finish for
exposed ducts.
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D. Stainless-Steel Sheets: Comply with ASTM A 480/A 480M, Type 304 or 316, as indicated in
the "Duct Schedule" Article; cold rolled, annealed, sheet. Exposed surface finish shall be
No. 2B,No.2D,No. 3,or No.4 as indicated in the"Duct Schedule"Article.
E. Aluminum Sheets: Comply with ASTM B 209Alloy 3003, H14 temper; with mill finish for
concealed ducts,and standard,one-side bright finish for duct surfaces exposed to view.
F. Reinforcement Shapes and Plates: ASTM A 36/A 36M,steel plates,shapes,and bars;black and
galvanized.
1. Where black- and galvanized-steel shapes and plates are used to reinforce aluminum
ducts,isolate the different metals with butyl rubber,neoprene,or EPDM gasket materials.
G. Tie Rods: Galvanized steel, 1/4-inch minimum diameter for lengths 36 inchesor less; 3/8-
inchminimum diameter for lengths longer than 36 inches.
2.3 DUCT LINER
A. Fibrous-Glass Liner: Comply with NFPA 90A or NFPA 90B and with NAIMA AH 124.
1. Manufacturers:
a. CertainTeed Corporation; Insulation Group.
b. Johns Manville.
c. Knauf Insulation.
d. Owens Corning.
2. Materials: ASTM C 1071; surfaces exposed to airstream shall be coated to prevent
erosion of glass fibers.
a. Thickness: 1/2 inch.
b. Thermal Conductivity(k-Value): 0.26 at 75 deg Fmean temperature.
c. Fire-Hazard Classification: Maximum flame-spread index of 25 and smoke-
developed index of 50 when tested according to ASTM E 84.
d. Liner Adhesive: Comply with NFPA 90A or NFPA 90B and with ASTM C 916.
e. Mechanical Fasteners: Galvanized steel suitable for adhesive attachment,
mechanical attachment, or welding attachment to duct without damaging liner
when applied as recommended by manufacturer and without causing leakage in
duct.
1) Tensile Strength: Indefinitely sustain a 50-lbtensile, dead-load test -
perpendicular to duct wall.
2) Fastener Pin Length: As required for thickness of insulation and without
projecting more than 1/8-inchinto airstream.
3) Adhesive for Attaching Mechanical Fasteners: Comply with fire-hazard
classification of duct liner system.
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2.4 SEALANT MATERIALS
A. Joint and Seam Sealants, General: The term "sealant is not limited to materials of adhesive or
mastic nature but includes tapes and combinations of open-weave fabric strips and mastics.
B. Joint and Seam Tape: Not acceptable.
C. Tape Sealing System: Woven-fiber tape impregnated with gypsum mineral compound and
modified acrylic/silicone activator to react exothermically with tape to form hard, durable,
airtight seal.
D. Water-Based Joint and Seam Sealant: One-part flexible, adhesive sealant,resistant to UV light
when cured,UL 723 listed,and complying with NFPA requirements for Class 1 ducts.
E. Solvent-Based Joint and Seam Sealant: One-part, nonsag, solvent-release-curing, polymerized
butyl sealant formulated with a minimum of 75 percent solids.
F. Flanged Joint Mastic: One-part,acid-curing, silicone,elastomeric joint sealant complying with
ASTM C 920,Type S,Grade NS,Class 25,Use O.
G. Flange Gaskets: Butyl rubber or EPDM polymer with polyisobutylene plasticizer.
2.5 HANGERS AND SUPPORTS
A. Hanger Materials: Galvanized sheet steel or threaded steel rod.
1. Hangers Installed in Corrosive Atmospheres: Electrogalvanized, all-thread rods or
galvanized rods with threads painted with zinc-chromate primer after installation.
2. Strap and Rod Sizes: Comply with SMACNA's "HVAC Duct Construction Standards--
Metal and Flexible"for steel sheet width and thickness and for steel rod diameters.
3. Galvanized-steel straps attached to aluminum ducts shall have contact surfaces painted
with zinc-chromate primer.
B. Duct Attachments: Sheet metal screws, blind rivets, or self-tapping metal screws; compatible
with duct materials.
C. Trapeze and Riser Supports: Steel shapes complying with ASTM A 36/A 36M.
1. Supports for Galvanized-Steel Ducts: Galvanized-steel shapes and plates.
2. Supports for Stainless-Steel Ducts: Stainless-steel support materials.
3. Supports for Aluminum Ducts: Aluminum support materials unless materials are
electrolytically separated from ducts.
2.6 RECTANGULAR DUCT FABRICATION
A. Fabricate ducts, elbows, transitions, offsets, branch connections, and other construction
according to SMACNA's "HVAC Duct Construction Standards—Metal and Flexible" and
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complying with requirements for metal thickness, reinforcing types and intervals, tie-rod
applications,and joint types and intervals.
1. Lengths: Fabricate rectangular ducts in lengths appropriate to reinforcement and rigidity
class required for pressure class.
2. Deflection: Duct systems shall not exceed deflection limits according to SMACNA's
"HVAC Duct Construction Standards--Metal and Flexible."
B. Transverse Joints: Prefabricated slide-on joints and components constructed using
manufacturer's guidelines for material thickness, reinforcement size and spacing, and joint
reinforcement.
1. Manufacturers:
a. Ductmate Industries,Inc.
b. Nexus Inc.
c. Ward Industries,Inc.
C. Formed-On Flanges: Construct according to SMACNA's "HVAC Duct Construction
Standards--Metal and Flexible,"Figure 1-4,using corner,bolt,cleat,and gasket details.
1. Manufacturers:
a. Ductmate Industries,Inc.
b. Lockformer.
2. Duct Size: Maximum 30 inches wide and up to 2 inch wg pressure class.
3. Longitudinal Seams: Pittsburgh lock sealed with noncuring polymer sealant(only on all
medium and high pressure ductwork).
D. Cross Breaking or Cross Beading: Cross break or cross bead duct sides 12 inches and larger
and 20 gage or less,with more than 10 sq.ft.of nonbraced panel area.
E. Transitions:
1. Do not exceed 1 inch in 7 inches of slope for increase-in-area transitions.
2. Do not exceed 1 inch in 4 inches of slope for decrease-in-area transitions, 1 inch in
7 inches is preferable.
3. Do not exceed 45 degrees on the entering or leaving side for angle of transitions at
connections to equipment without the use of approved vanes.
F. Elbows:
1. Fabricate ells using one of the following Specifications: The fabrication methods are
listed in order of preference. Use radius elbows wherever possible. Use square elbows
only when available space prevents the use of radius elbows.
a. Unvaned, long radius elbow with the throat radius equal to 3/4 of the width of the
duct and with a full heel radius.
b. Six inch throat radius with full radius,single thickness vanes and full heel radius.
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c. Square elbows with airfoil,double thickness turning vanes.
d. Maximum unsupported length of vanes shall be 36 inches. Securely fasten vanes
to runners. Secure vanes in stable position. Construct vane edges to project
tangents parallel to duct sides.
2. Turning Vanes:
a. True airfoil design; smoothly-rounded entry nose with extended trailing edge.
Generated sound power level shall not exceed 54 decibels in band 4 at 2000 FPM
in a 24 inch x 24 inch duct.
b. Manufacturer: Equal to Aero/Dyne Co., High Efficiency Profile, HEP. Contact
Aero/Dyne Co. at 1215 High Street, Suite 103, Auburn, CA 95603. (Telephone
#800-522-2423).
c. Fabricate assemblies with side rails; install vanes on design centers of 2.4 inches
across the full diagonal dimension of the elbow.
d. Submit manufacturer's product data for review.
G. Branch Connections:
1. Pressure Classification 2 Inches and Less:
a. Rectangular Branch from Rectangular Main: 45 degree entry with all corners
closed as shown in Figure 4-6.
b. Round Branches: High-efficiency take-offs if shown on Drawings, otherwise use
spin-in fitting without scoop.
c. Parallel Flow Branches: See Figure 4-5.
d. Space duct joints to avoid cutting them for branch take offs and outlet collars.
2. Pressure Classification Above 2 Inches:
a. Round Branches: Conical round fittings only.
b. Rectangular Branch from Rectangular Main: 45 degree entry with all corners
closed as shown in Figure 4-6.
c. Parallel Flow Branches: See Figure 4-5.
d. Space duct joints to avoid cutting them for branch take offs and outlet collars.
2.7 APPLICATION OF LINER IN RECTANGULAR DUCTS
A. Adhere a single layer of indicated thickness of duct liner with at least 90 percent adhesive
coverage at liner contact surface area.
B. Apply adhesive to transverse edges of liner facing upstream that do not receive metal nosing.
C. Butt transverse joints without gaps and coat joint with adhesive.
D. Fold and compress liner in corners of rectangular ducts or cut and fit to ensure butted-edge
overlapping.
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E. Do not apply liner in rectangular ducts with longitudinal joints, except at corners of ducts,
unless duct size and standard liner product dimensions make longitudinal joints necessary.
F. Secure liner with mechanical fasteners 4 inches from corners and at intervals not exceeding
12 inches transversely; at 3 inches from transverse joints and at intervals not exceeding
18 inches longitudinally.
G. Secure transversely oriented liner edges facing the airstream with metal nosings that have either
channel or "Z" profiles or are integrally formed from duct wall. Fabricate edge facings at the
following locations:
1. Fan discharges.
2. Intervals of lined duct preceding unlined duct.
3. Upstream edges of transverse joints in ducts where air velocities are greater than 2500
fpm or where indicated.
H. Secure insulation between perforated sheet metal inner duct of same thickness as specified for
outer shell. Use mechanical fasteners that maintain inner duct at uniform distance from outer
shell without compressing insulation.
1. Sheet Metal Inner Duct Perforations: 3/32-inch diameter, with an overall open area of
23 percent.
I. Terminate inner ducts with buildouts attached to fire-damper sleeves, dampers, turning vane
assemblies, or other devices. Fabricated buildouts(metal hat sections)or other buildout means
are optional;when used,secure buildouts to duct walls with bolts,screws,rivets,or welds.
2.8 ROUND DUCT AND FITTING FABRICATION
A. Diameter as applied to flat-oval ducts in this Article is the diameter of a round duct with a
circumference equal to the perimeter of a given size of flat-oval duct.
B. Round, Spiral Lock Seam Ducts: Fabricate supply ducts according to SMACNA's "HVAC
Duct Construction Standards--Metal and Flexible."
1. Manufacturers:
a. Accu-Duct.
b. McGill AirFlow Corporation.
c. Norlock.
d. Nor-Pac Sheetmeral;Billings,Montana.
e. Omniduct.
f. SEMCO Incorporated.
g. Team Mechanical Inc.
h. Ventline.
i. Sheet Metal Contractors,Inc.
C. Duct Joints:
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1. Ducts up to 20 Inches in Diameter: Interior, center-beaded slip coupling, sealed before
and after fastening,attached with sheet metal screws.
2. Ducts 21 to 72 Inches in Diameter: Three-piece,gasketed,flanged joint consisting of two
internal flanges with sealant and one external closure band with gasket.
3. Ducts Larger than 72 Inches in Diameter: Companion angle flanged joints per SMACNA
"HVAC Duct Construction Standards--Metal and Flexible,"Figure 3-2.
D. 90 Degree Tees and Laterals and Conical Tees: Fabricate to comply with SMACNA's "HVAC
Duct Construction Standards--Metal and Flexible," with metal thicknesses specified for
longitudinal-seam straight ducts. Tees shall be conical. Saddle taps or straight tees shall not be
used.
E. Diverging-Flow Fittings: Fabricate with reduced entrance to branch taps and with no excess
material projecting from fitting onto branch tap entrance.
F. Two piece mitered elbows shall not be used.
G. The leading edge of all vanes in ducts over 20 inch diameter is to be hemmed with 1/2 inch
foldback. Turning vanes in ducts over 24 inches are to be reinforced by stays or sectional
construction to limit unsupported length to 24 inches. Vanes shall be minimum of 20 gauge.
H. Reduction of divided flow fittings to conical span section in the 36 common reductions in sizes
4 inch through 22 inch.
I. Galvanized areas damaged by welding to be coated with corrosion resistant aluminum paint.
J. Fabricate elbows using die-formed,gored,pleated,or mitered construction. Bend radius of die-
formed, gored, and pleated elbows shall be 1-1/2 times duct diameter. Unless elbow
construction type is indicated,fabricate elbows as follows:
1. Mitered-Elbow Radius and Number of Pieces: Welded construction complying with
SMACNA's"HVAC Duct Construction Standards--Metal and Flexible,"unless otherwise
indicated.
2. Round Mitered Elbows: Welded construction with the following metal thickness for
pressure classes from minus 2 to plus 2 inch wg:
a. Ducts 3 to 36 Inchesin Diameter: 22 gage.
b. Ducts 37 to 50 Inchesin Diameter: 20 gage.
c. Ducts 52 to 60 Inchesin Diameter: 18 gage.
d. Ducts 62 to 84 Inchesin Diameter: 16 gage.
3. Round Mitered Elbows: Welded construction with the following metal thickness for
pressure classes from 2 to 10 inch wg:
a. Ducts 3 to 26 Inchesin Diameter: 22 gage.
b. Ducts 27 to 50 Inchesin Diameter: 20 gage.
c. Ducts 52 to 60 Inchesin Diameter: 18 gage.
d. Ducts 62 to 84 Inchesin Diameter: 16 gage.
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4. 90 Degree, 2-Piece, Mitered Elbows: Use only for supply systems or for material-
handling Class A or B exhaust systems and only where space restrictions do not permit
using radius elbows. Fabricate with single-thickness turning vanes.
5. Round Elbows 8 Inches and Less in Diameter: Fabricate die-formed elbows for 45 and
on 90 degree elbows and pleated elbows for 30, 45, 60, and 90 degrees only. Fabricate
nonstandard bend-angle configurations or nonstandard diameter elbows with gored
construction.
6. Round Elbows 9 through 14 Inches in Diameter: Fabricate gored or pleated elbows for
30, 45, 60, and 90 degrees unless space restrictions require mitered elbows. Fabricate
nonstandard bend-angle configurations or nonstandard diameter elbows with gored
construction.
7. Round Elbows Larger Than 14 Inches in Diameter and All Flat-Oval Elbows: Fabricate
gored elbows unless space restrictions require mitered elbows.
8. Die-Formed Elbows for Sizes through 8 Inches in Diameter and All Pressures 20 gage
thick with 2-piece welded construction.
9. Round Gored-Elbow Metal Thickness: Same as non-elbow fittings specified above.
10. Flat-Oval Elbow Metal Thickness: Same as longitudinal-seam flat-oval duct specified
above.
11. Pleated Elbows for Sizes through 14 Inches in Diameter and Pressures through 10 Inch
wg: 26 gage.
PART 3-EXECUTION
3.1 DUCT APPLICATIONS
A. Static-Pressure Classes: Unless otherwise indicated,construct ducts according to the following:
1. Supply Ducts: 2 inch wg.
2. Return Ducts(Negative Pressure): 1 inch wg.
3. Exhaust Ducts(Negative Pressure): 1 inch wg.
B. All ducts shall be galvanized steel except as follows:
1. Range Hood Exhaust Ducts: Comply with NFPA 96.
a. Concealed: Carbon-steel sheet(16 gage minimum).
b. Exposed: Type 304, stainless steel with finish to match kitchen equipment and
range hood(18 gage minimum).
c. Weld and flange seams and joints.
2. Dishwasher Hood Exhaust Ducts:
a. Aluminum,with seams and laps arranged on top of duct.
3. Shower Room Exhaust and Return Ducts: Exhaust and return ducts from rooms
containing showers shall use aluminum sheets in accordance with SMACNA "HVAC
Duct Construction Standards," Tables 1-14 through 1-16, including associated details.
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Conform to the requirements in the referenced standard for metal thickness, reinforcing
types and intervals,tie rod applications and joint types and intervals.
3.2 DUCT INSTALLATION A
A. Drawing plans, schematics, and diagrams indicate general location and arrangement of duct
system. Indicated duct locations,configurations,and arrangements were used to size ducts and
calculate friction loss for air-handling equipment sizing and for other design considerations.
Install duct systems as indicated unless deviations to layout are approved on Shop Drawings and
Coordination Drawings.
B. Install ducts according to SMACNA's "HVAC Duct Construction Standards - Metal and
Flexible"unless otherwise indicated.
C. Install round ducts in maximum practical lengths.
D. Install ducts with fewest possible joints.
E. Install factory- or shop-fabricated fittings for changes in direction,-size, and shape and for
branch connections. Secure fittings with screws. Install screws at intervals of 10 inches,with a
minimum of(3)screws per fitting. Seal all joints and seams.
F. Unless otherwise indicated, install ducts vertically and horizontally, and parallel and
perpendicular to building lines.
G. Install ducts close to walls,overhead construction,columns,and other structural and permanent
enclosure elements of building.
H. Install ducts with a clearance of 1 inch,plus allowance for insulation thickness.
I. Route ducts to avoid passing through transformer vaults and electrical equipment rooms and
enclosures.
J. Where ducts pass through non-fire-rated interior partitions and exterior walls and are exposed to
view, cover the opening between the partition and duct or duct insulation with sheet metal
flanges of same metal thickness as the duct. Overlap openings on four sides by at least 1-1/2
inches.
K. Protect duct interiors with sheet metal or plastic sheet covers from moisture,construction debris
and dust,and other foreign materials until system is energized. Comply with SMACNA's"Duct
Cleanliness for New Construction Guidelines,"Intermediate Level.
L. Intermediate duct reinforcement to be same as duct material.
M. Do not exceed 45 degrees for easement transition angle.
N. Insulation: Where Drawings and Specifications require ducts to be insulated,make provisions
for neat insulation finish around damper operating quadrants, splitter adjusting clamps, access
doors, and similar operating devices. Metal collar equivalent in depth to insulation thickness
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and of suitable size to which insulation may be fmished used for this purpose shall be attached
to the duct. Linings in air ducts shall meet the Erosion Test Method described in UL
Publication no. 181.
O. Counterflashing: Counterflash ductwork penetrating roof.
3.3 INSTALLATION OF EXPOSED DUCTWORK
A. Protect ducts exposed in finished spaces from being dented,scratched,or damaged.
B. Trim duct sealants flush with metal. Create a smooth and uniform exposed bead. Do not use
two-part tape sealing system.
C. Grind welds to provide smooth surface free of burrs, sharp edges, and weld splatter. When
welding stainless steel with a No. 3 or 4 finish, grind the welds flush,polish the exposed welds,
and treat the welds to remove discoloration caused by welding.
D. Maintain consistency, symmetry, and uniformity in the arrangement and fabrication of fittings,
hangers and supports,duct accessories,and air outlets.
E. Repair or replace damaged sections and finished work that does not comply with these
requirements.
3.4 ADDITIONAL INSTALLATION REQUIREMENTS FOR COMMERCIAL KITCHEN
HOOD EXHAUST DUCT
A. Install commercial kitchen hood exhaust ducts without dips and traps that may hold grease, and
sloped a minimum of 2 percent to drain grease back to the hood.
B. Install fire-rated access panel assemblies at each change in direction and at maximum intervals
of 20 feet in horizontal ducts,and at every floor for vertical ducts, or as indicated on Drawings.
Locate access panel on top or sides of duct a minimum of 1-1/2 inches from bottom of duct.
C. Do not penetrate fire-rated assemblies except as allowed by applicable building codes and
authorities having jurisdiction.
3.5 HANGER AND SUPPORT INSTALLATION
A. Comply with SMACNA's "HVAC Duct Construction Standards - Metal and Flexible,"
Chapter 4, "Hangers and Supports."
B. Building Attachments: Concrete inserts, anchors, or structural-steel fasteners appropriate for
construction materials to which hangers are being attached.
1. Where practical,install concrete inserts before placing concrete.
2. Powder-actuated fasteners not acceptable for ductwork installation.
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C. Hanger Spacing: Comply with SMACNA's "HVAC Duct Construction Standards - Metal and
Flexible," Table 4-1, "Rectangular Duct Hangers Minimum Size," and Table 4-2, "Minimum
Hanger Sizes for Round Duct," for maximum hanger spacing; install hangers and supports
within 24 inches of each elbow and within 48 inches of each branch intersection.
D. Hangers Exposed to View: Threaded rod and angle or channel supports.
E. Support vertical ducts with steel angles or channel secured to the sides of the duct with welds,
bolts, sheet metal screws, or blind rivets; support at each floor and at a maximum intervals of
16 feet.
F. Install upper attachments to structures. Select and size upper attachments with pull-out,tension,
and shear capacities appropriate for supported loads and building materials where used.
G. Support round ducts from building structure with galvanized steel hangers as recommended in
SMACNA manual. Secure hangers to masonry portion of building by means of inserts or other
acceptable anchors.
3.6 SEISMIC-RESTRAINT-DEVICE INSTALLATION
A. Install ducts with hangers and braces designed to support the duct and to restrain against seismic
forces required by applicable building codes. Comply with SMACNA's "Seismic Restraint
Manual: Guidelines for Mechanical Systems,"and ASCE/SEI 7.
1. Space lateral supports a maximum of 40 feet o.c., and longitudinal supports a maximum
of 80 feet o.c.
2. Brace a change of direction longer than 12 feet.
B. Select seismic-restraint devices with capacities adequate to carry present and future static and
seismic loads.
C. Install cables so they do not bend across edges of adjacent equipment or building structure.
D. Install cable restraints on ducts that are suspended with vibration isolators.
E. Install seismic-restraint devices using methods approved by an agency acceptable to authorities
having jurisdiction.
F. Attachment to Structure: If specific attachment is not indicated,anchor bracing and restraints to
structure,to flanges of beams,to upper truss chords of bar joists,or to concrete members.
G. Drilling for and Setting Anchors:
1. Identify position of reinforcing steel and other embedded items prior to drilling holes for
anchors. Do not damage existing reinforcement or embedded items during drilling.
Notify the Architect if reinforcing steel or other embedded items are encountered during
drilling. Locate and avoid prestressed tendons, electrical and telecommunications
conduit,and gas lines.
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2. Do not drill holes in concrete or masonry until concrete, mortar, or grout has achieved
full design strength.
3. Wedge Anchors: Protect threads from damage during anchor installation. Heavy-duty
sleeve anchors shall be installed with sleeve fully engaged in the structural element to
which anchor is to be fastened.
4. Set anchors to manufacturer's recommended torque,using a torque wrench.
5. Install zinc-coated steel anchors for interior applications and stainless-steel anchors for
applications exposed to weather.
3.7 CONNECTIONS
A. Make connections to equipment with flexible connectors complying with Division 23 Section
"Air Duct Accessories."
B. Comply with SMACNA's "HVAC Duct Construction Standards - Metal and Flexible" for
branch,outlet and inlet,and terminal unit connections.
3.8 PAINTING -
A. Paint interior of metal ducts that are visible through registers and grilles and that do not have
duct liner. Apply one coat of flat,black,latex paint over a compatible galvanized-steel primer.
Paint materials and application requirements are per paint manufacturer's recommendations.
3.9 FIELD QUALITY CONTROL
A. Perform tests and inspections.
B. Leakage Tests: -
1. Test 100 percent of installed ductwork for leakage in accordance with "System Pressure
Testing for Leaks," published by United Sheet Metal Division of United McGill
Corporation. Use prescribed test kit containing test blower,two U-tube manometers and
calibrated curve attached to the orifice tube assembly.
2. Pressurize installed duct system in 2 inch water gauge over design operating pressure.
Total allowable leakage shall not exceed one percent of air handling capacity of system.
If system is tested in sections, add leakage rates for individual sections to determine
leakage for the whole system.
3. Correct leaks found in excess of allowable limits. Retest.
4. Have test results available for review on a progressive and final basis. Include test results
in project closing file.
5. For Bidding purposes, assume all leakage tests will be witnessed by Engineer. Notify
Engineer of testing schedule a minimum of(7)days in advance.
6. Disassemble,reassemble, and seal segments of systems to accommodate leakage testing
and for compliance with test requirements.
7. Test for leaks before applying external insulation.
C. Duct system will be considered defective if it does not pass tests and inspections.
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D. Prepare test and inspection reports.
3.10 AIR TEST AND BALANCE
A. Prepare the system for tests as specified in Section 230593 and correct deficiencies found by the
Test and Balance firm.
B. Duct dimensions shown on Drawings indicate inside clear dimensions. Make allowances for
duct requiring internal sound lining,or insulation to provide "inside clear"(IC)dimensions.
C. In addition to the requirements above,add supplemental bracing as necessary to prevent sagging
and drumming,and/or vibration.
END OF SECTION 233113
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SECTION 233300-AIR DUCT ACCESSORIES
PART 1 -GENERAL
1.1 RELATED DOCUMENTS
A. Drawings and general provisions of the Contract, including General and Supplementary
Conditions and Division 01 Specification Sections,apply to this Section.
1.2 SUMMARY
A. Section Includes:
1. Backdraft dampers.
2. Manual volume dampers.
3. Turning vanes.
4. Duct-mounted access doors.
5. Grease duct access panel assemblies.
6. Flexible connectors.
7. Flexible ducts.
8. Duct accessory hardware.
1.3 SUBMITTALS
A. Product Data: For each type of product indicated.
1. For duct silencers, include pressure drop and dynamic insertion loss data. Include
breakout noise calculations for high transmission loss casings.
1.4 QUALITY ASSURANCE
A. Comply with NFPA 90A, "Installation of Air Conditioning and Ventilating Systems," and with
NFPA 90B,"Installation of Warm Air Heating and Air Conditioning Systems."
PART 2-PRODUCTS
2.1 BACKDRAFT RELIEF DAMPERS
A. Manufacturers:
1. Air Balance Inc.;a division of Mestek,Inc.
2. American Warming and Ventilating;a division of Mestek,Inc.
3. Cesco Products; a division of Mestek,Inc.
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4. Duro Dyne Inc.
5. Greenheck Fan Corporation.
6. McGill Airflow Corporation.
7. Nailor Industries Inc.
8. Penn Ventilation.
9. Ruskin Company.
10. SEMCO Incorporated.
11. Vent Products Company,Inc.
B. Description: Gravity balanced.
C. Maximum Air Velocity: 3000 fpm.
D. Maximum System Pressure: 2-inch wg.
E. Frame: 0.052-inch-thick,galvanized sheet steel,with welded corners and mounting flange.
F. Blades: Multiple single-piece blades, maximum 6-inchwidth, 0.025-inch-thick, roll-formed
aluminum.
G. Blade Action: Parallel.
H. Blade Seals: Vinyl.
I. Blade Axles:
1. Material:Nonferrous metal or galvanized steel.
2. Diameter:0.20 inch.
J. Tie Bars and Brackets: Aluminum or Galvanized steel.
K. Return Spring: Adjustable tension.
L. Bearings: Steel ball or synthetic pivot bushings.
2.2 MANUAL VOLUME DAMPERS
A. Standard,Steel,Manual Volume Dampers:
1. Manufacturers:
a. Air Balance Inc.;a division of Mestek,Inc.
b. American Warming and Ventilating;a division of Mestek,Inc.
c. Cesco Products.
d. Flexmaster U.S.A.,Inc.
e. Greenheck Fan Corporation.
f. McGill AirFlow LLC.
g. METALAIRE,Inc.
h. Nailor Industries Inc.
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i. Penn Ventilation.
j. Ruskin Company.
k. Vent Products Company,Inc.
2. Standard leakage rating,with linkage outside airstream.
3. Suitable for horizontal or vertical applications.
4. Frames:
a. Hat-shaped,galvanized or stainless steel channels,0.064-inch minimum thickness.
b. Mitered and welded corners.
c. Flanges for attaching to walls and flangeless frames for installing in ducts.
5. Blades:
a. Multiple or single blade.
b. Parallel-or opposed-blade design.
c. Stiffen damper blades for stability.
d. Galvanized or Stainless steel,0.064 inch thick.
6. Blade Axles: Galvanized steel or Stainless steel.
7. Bearings:
a. Oil-impregnated bronze,Molded synthetic or Stainless steel sleeve.
b. Dampers in ducts with pressure classes of 3-inch wg or less shall have axles full
length of damper blades and bearings at both ends of operating shaft.
8. Tie Bars and Brackets: Galvanized steel.
B. Standard,Aluminum,Manual Volume Dampers:
1. Manufacturers: Subject to compliance with requirements, available manufacturers
offering products that may be incorporated into the Work include,but are not limited to,
the following:
a. Air Balance Inc.;a division of Mestek,Inc.
b. American Warming and Ventilating;a division of Mestek, Inc.
c. Cesco Products.
d. Flexmaster U.S.A.,Inc.
e. McGill AirFlow LLC.
f. METALAIRE,Inc.
g. Penn Ventilation Company.
h. Nailor Industries Inc.
i. Ruskin Company.
j. Vent Products Company,Inc.
2. Standard leakage rating,with linkage outside airstream.
3. Suitable for horizontal or vertical applications.
4. Frames: Hat-shaped, 0.10-inch-thick, aluminum sheet channels; frames with flanges for
attaching to walls and flangeless frames for installing in ducts.
5. Blades:
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a. Multiple or single blade.
b. Parallel-or opposed-blade design.
c. Stiffen damper blades for stability.
d. Roll-Formed Aluminum Blades: 0.10-inch-thick aluminum sheet.
e. Extruded-Aluminum Blades: 0.050-inch-thick extruded aluminum.
6. Blade Axles: Galvanized steel,Stainless steel or nonferrous metal.
7. Bearings:
a. Oil-impregnated bronze,Molded synthetic or stainless steel sleeve.
b. Dampers in ducts with pressure classes of 3-inch wg or less shall have axles full
length of damper blades and bearings at both ends of operating shaft.
8. Tie Bars and Brackets: Aluminum.
C. Low-Leakage,Steel,Manual Volume Dampers:
1. Manufacturers:
a. Air Balance Inc.;a division of Mestek,Inc.
b. American Warming and Ventilating;a division of Mestek,Inc.
c. Cesco Products.
d. Flexmaster U.S.A.,Inc.
e. McGill AirFlow LLC.
f. METALAIRE,Inc.
g. Nailor Industries Inc.
h. Penn Ventilation Company.
i. Pottorff;a division of PCI Industries,Inc.
j. Ruskin Company.
k. Trox USA Inc.
1. Vent Products Company,Inc.
2. Low-leakage rating,with linkage outside airstream, and bearing AMCA's Certified
Ratings Seal for both air performance and air leakage.
3. Suitable for horizontal or vertical applications.
4. Frames:
a. Hat,U or angle shaped.
b. Galvanized or stainless steel channels,0.064 inch thick.
c. Mitered and welded corners.
d. Flanges for attaching to walls and flangeless frames for installing in ducts.
5. Blades:
a. Multiple or single blade.
b. Parallel-or opposed-blade design.
c. Stiffen damper blades for stability.
d. Galvanized or stainless,roll-formed steel,0.064 inch thick.
6. Blade Axles: Galvanized steel, Stainless steel or nonferrous metal.
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7. Bearings:
a. Oil-impregnated bronze,Molded synthetic or stainless steel sleeve.
b. Dampers in ducts with pressure classes of 3-inch wg or less shall have axles full
length of damper blades and bearings at both ends of operating shaft.
8. Blade Seals: Vinyl.
9. Jamb Seals: Cambered stainless steel or aluminum.
10. Tie Bars and Brackets: Galvanized steel or aluminum.
11. Accessories:
a. Include locking device to hold single-blade dampers in a fixed position without
vibration.
D. Low-Leakage,Aluminum,Manual Volume Dampers:
1. Manufacturers: Subject to compliance with requirements, available manufacturers
offering products that may be incorporated into the Work include,but are not limited to,
the following:
a. Air Balance Inc.;a division of Mestek,Inc.
b. American Warming and Ventilating;a division of Mestek,Inc.
c. Cesco Products.
d. Flexmaster U.S.A.,Inc.
e. McGill AirFlow LLC.
f. METALAIRE,Inc.
g. Nailor Industries Inc.
h. Penn Ventilation Company.
i. Pottorff;a division of PCI Industries,Inc.
j. Ruskin Company.
k. Trox USA Inc. -
1. Vent Products Company,Inc.
2. Low-leakage rating,with linkage outside airstream, and bearing AMCA's Certified
Ratings Seal for both air performance and air leakage.
3. Suitable for horizontal or vertical applications.
4. Frames: Hat,U or angle-shaped,0.10-inch-thick,aluminum sheet channels; frames with
flanges for attaching to walls and flangeless frames for installing in ducts.
5. Blades:
a. Multiple or single blade.
b. Parallel-or opposed-blade design.
c. Roll-Formed Aluminum Blades: 0.10-inch-thick aluminum sheet.
d. Extruded-Aluminum Blades: 0.050-inch-thick extruded aluminum.
6. Blade Axles: Galvanized steel,stainless steel or nonferrous metal.
7. Bearings:
a. Oil-impregnated bronze,molded synthetic or stainless steel sleeve.
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b. Dampers in ducts with pressure classes of 3-inch wg or less shall have axles full
length of damper blades and bearings at both ends of operating shaft.
8. Blade Seals: Vinyl.
9. Jamb Seals: Cambered stainless steel or aluminum.
10. Tie Bars and Brackets: Galvanized steel or aluminum.
11. Accessories:
a. Include locking device to hold single-blade dampers in a fixed position without
vibration.
E. Damper Hardware:
1. Zinc-plated,die-cast core with dial and handle made of 3/32-inch-thick zinc-plated steel,
and a 3/4-inch hexagon locking nut.
2. Include center hole to suit damper operating-rod size.
3. Include elevated platform for insulated duct mounting.
2.3 TURNING VANES
A. Manufacturers:
1. Aerodyne,Inc.
2. Ductmate Industries,Inc.
3. Duro Dyne Inc.
4. METALAIRE,Inc.
5. SEMCO Incorporated.
6. Ward Industries,Inc.;a division of Hart&Cooley,Inc.
B. Manufactured Turning Vanes for Metal Ducts: Curved blades of galvanized sheet steel;support
with bars perpendicular to blades set for ducts over 36 inches;set into vane runners suitable for
duct mounting.
1. Acoustic Turning Vanes: Fabricate airfoil-shaped aluminum extrusions with perforated
faces and fibrous-glass fill.
C. Manufactured Turning Vanes for Nonmetal Ducts: Fabricate curved blades of resin-bonded
fiberglass with acrylic polymer coating; support with bars perpendicular to blades set for ducts
over 36 inches;set into vane runners suitable for duct mounting.
D. GenerafRequirements: Comply with SMACNA's"HVAC Duct Construction Standards-Metal
and Flexible;"Figures 2-3, "Vanes and Vane Runners," and 2-4,"Vane Support in Elbows."
E. Vane Construction: Single and Double wall.
F. Vane Construction: Single wall for ducts up to 36 inches wide and double wall for larger
dimensions.
G. Install turning vanes in all square and rectangular elbows.
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2.4 GREASE DUCT ACCESS PANEL ASSEMBLIES
A. Manufacturers:
1. Ductmate Industries, Inc.
2. Flame Gard, Inc.
3. 3M.
B. Labeled according to UL 1978 by an NRTL.
C. Panel and Frame: Minimum thickness 0.0528-inch carbon steel.
D. Fasteners: Carbon steel. Panel fasteners shall not penetrate duct wall.
E. Gasket: Comply with NFPA 96; grease-tight, high-temperature ceramic fiber, rated for
minimum 2000 deg F.
F. Minimum Pressure Rating: 10-inch wg,positive or negative.
2.5 FLEXIBLE CONNECTORS
A. Manufacturers:
1. Ductmate Industries,Inc.
2. Duro Dyne Inc.
3. Ventfabrics, Inc.
4. Ward Industries, Inc.;a division of Hart&Cooley,Inc.
B. Materials: Flame-retardant or noncombustible fabrics.
C. Coatings and Adhesives: Comply with UL 181,Class 1.
D. Metal-Edged Connectors: Factory fabricated with a fabric strip 3-1/2 inches wide attached to 2
strips of 2-3/4-inch-wide, 24 gage thick, galvanized sheet steel or 0.032-inch-thick aluminum
sheets. Provide metal compatible with connected ducts.
E. Indoor System, Flexible Connector Fabric: Glass fabric double coated with neoprene.
1. Minimum Weight: 26 oz./sq. yd.
2. Tensile Strength: 480 lbf/inch in the warp and 360 lbf/inch in the filling.
3. Service Temperature: Minus 40 to plus 200 deg F.
2.6 FLEXIBLE DUCTS
A. Manufacturers:
1. Flexmaster U.S.A.,Inc.
2. Hart and Cooley, Inc.
3. JP Lampborn.
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4. McGill AirFlow LLC.
5. Ward Industries,Inc.;a division of Hart&Cooley,Inc.
B. Insulated, Flexible Duct: UL 181, Class 1, 2-ply vinyl film supported by helically wound,
spring-steel wire;fibrous-glass insulation;polyethylene or aluminized vapor-barrier film.
1. Pressure Rating: 10-inch wg positive and 1.0-inch wg negative.
2. Maximum Air Velocity: 4000 fpm.
3. Temperature Range: Minus 10 to plus 160 deg F.
C. Flexible Duct Connectors:
1. Clamps: Nylon strap in sizes 3 through 18 inches,to suit duct size.
2.7 DUCT ACCESSORY HARDWARE
A. Instrument Test Holes: Cast iron or cast aluminum to suit duct material, including screw cap
and gasket. Size to allow insertion of pitot tube and other testing instruments and of length to
suit duct-insulation thickness. -
B. Adhesives: High strength,quick setting, neoprene based, waterproof, and resistant to gasoline
and grease.
PART 3-EXECUTION
3.1 INSTALLATION
A. Install duct accessories according to applicable details in SMACNA's "HVAC Duct
Construction Standards - Metal and Flexible" for metal ducts and in NAIMA AH116, "Fibrous
Glass Duct Construction Standards," for fibrous-glass ducts.
B. Install duct accessories of materials suited to duct materials;use galvanized steel accessories in
galvanized steel and fibrous-glass ducts, stainless steel accessories in stainless steel ducts, and
aluminum accessories in aluminum ducts.
C. Install backdraft dampers at inlet of exhaust fans or exhaust ducts as close as possible to exhaust
fan unless otherwise indicated.
D. Install volume dampers at points on supply,return,and exhaust systems where branches extend
from larger ducts. Where dampers are installed in ducts having duct liner,install dampers with
hat channels of same depth as liner,and terminate liner with nosing at hat channel.
1. Install aluminum volume dampers in aluminum ducts.
E. Set dampers to fully open position before testing,adjusting,and balancing.
F. Install test holes at fan inlets and outlets and elsewhere as indicated.
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G. Install duct access doors on sides of ducts to allow for inspecting, adjusting, and maintaining
accessories and equipment at the following locations:
1. Horizontal Type I grease ducts to allow for proper cleaning. Clean outs shall not be
spaced greater than 20 feet apart.
2. Elsewhere as indicated.
H. Install access doors with swing against duct static pressure.
I. Access Door Sizes:
1. One-Hand or Inspection Access: 8 by 5 inches.
2. Two-Hand Access: 12 by 6 inches.
3. Head and Hand Access: 18 by 10 inches.
4. Head and Shoulders Access: 21 by 14 inches.
5. Body Access: 25 by 14 inches.
6. Body plus Ladder Access: 25 by 17 inches.
J. Label access doors according to Division 23 Section "Identification for HVAC Piping and
Equipment"to indicate the purpose of access door.
K. Install flexible connectors to connect ducts to equipment.
L. Connect diffusers or light troffer boots to ducts directly or with maximum 60-inch lengths of
flexible duct clamped or strapped in place.
M. Connect flexible ducts to metal ducts with nylon draw bands.
N. Install duct test holes where required for testing and balancing purposes.
O. Install thrust limits at centerline of thrust, symmetrical on both sides of equipment. Attach
thrust limits at centerline of thrust and adjust to a maximum of 1/4-inch movement during start
and stop of fans.
3.2 FIELD QUALITY CONTROL
A. Tests and Inspections:
1. Operate dampers to verify full range of movement.
2. Inspect locations of access doors and verify that purpose of access door can be
performed.
3. Inspect turning vanes for proper and secure installation.
END OF SECTION 233300
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SECTION 233423 -HVAC POWER VENTILATORS
PART 1 -GENERAL
1.1 RELATED DOCUMENTS
A. Drawings and general provisions of the Contract, including General and Supplementary
Conditions and Division 01 Specification Sections,apply to this Section.
1.2 SUMMARY
A. This Section includes the following:
1. Centrifugal roof ventilators.
2. Upblast propeller roof exhaust fans.
3. In-line centrifugal fans.
1.3 PERFORMANCE REQUIREMENTS
A. Project Altitude: Base fan-performance ratings on actual Project site elevations.
1.4 SUBMITTALS
A. Product Data: Include rated capacities, furnished specialties, and accessories for each type of
product indicated and include the following:
1. Certified fan performance curves with system operating conditions indicated.
2. Certified fan sound-power ratings.
3. Motor ratings and electrical characteristics,plus motor and electrical accessories.
4. Material thickness and finishes,including color charts.
5. Dampers,including housings,linkages,and operators.
6. Roof curbs.
7. Fan speed controllers.
B. Shop Drawings: Detail equipment assemblies and indicate dimensions,weights,loads,required
clearances, method of field assembly, components, and location and size of each field
connection.
1. Wiring Diagrams: Power,signal,and control wiring.
C. Operation and Maintenance Data: For power ventilators to include in emergency, operation,
and maintenance manuals.
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1.5 QUALITY ASSURANCE
A. Electrical Components, Devices, and Accessories: Listed and labeled as defined in NFPA 70,
Article 100, by a testing agency acceptable to authorities having jurisdiction, and marked for
intended use.
B. AMCA Compliance: Products shall comply with performance requirements and shall be
licensed to use the AMCA-Certified Ratings Seal.
C. NEMA Compliance: Motors and electrical accessories shall comply with NEMA standards.
D. UL Standard: Power ventilators shall comply with UL 705.
1.6 DELIVERY, STORAGE,AND HANDLING
A. Deliver fans as factory-assembled unit, to the extent allowable by shipping limitations, with
protective crating and covering.
B. Disassemble and reassemble units, as required for moving to final location, according to
manufacturer's written instructions.
C. Lift and support units with manufacturer's designated lifting or supporting points.
1.7 COORDINATION
A. Coordinate size and location of structural-steel support members.
B. Coordinate size and location of concrete bases. Cast anchor-bolt inserts into bases. Concrete,
reinforcement,and formwork requirements are specified in Division 03.
C. Coordinate installation of roof curbs, equipment supports, and roof penetrations. These items
are specified in Division 07 Section"Roof Accessories."
PART 2-PRODUCTS
2.1 CENTRIFUGAL ROOF VENTILATORS
A. Manufacturers: Subject to compliance with requirements, provide products by one of the
following:
1. Acme Engineering and Manufacturing Company.
2. Carnes Company HVAC.
3. Greenheck Fan Corp.
4. Loren Cook Company.
5. New York Blower Company(The).
6. Penn Ventilation.
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B. Description: Direct- or belt-driven centrifugal fans consisting of housing, wheel, fan shaft,
bearings,motor and disconnect switch,drive assembly,curb base,and accessories.
C. Housing: Removable, spun-aluminum, dome top and outlet baffle; square, one-piece,
aluminum base with venturi inlet cone.
1. Upblast Units: Provide spun-aluminum discharge baffle to direct discharge air upward,
with rain and snow drains and grease cup(where specified).
2. Hinged Subbase: Galvanized-steel hinged arrangement permitting service and
maintenance,(where specified).
D. Fan Wheels: Aluminum hub and wheel with backward-inclined blades.
E. Belt-Driven Drive Assembly: Resiliently mounted to housing,with the following features:
1. Fan Shaft: Turned,ground,and polished steel;keyed to wheel hub.
2. Shaft Bearings: Permanently lubricated,permanently sealed,self-aligning ball bearings.
3. Pulleys: Cast-iron,adjustable-pitch motor pulley.
4. Fan and motor isolated from exhaust airstream.
F. Accessories:
1. Variable-Speed Controller: Solid-state control to reduce speed from 100 to less than 50
percent.
2. Disconnect Switch: Nonfusible type, with thermal-overload protection mounted inside
fan housing,factory wired through an internal aluminum conduit.
3. Bird Screens: Removable, 1/2-inch mesh,aluminum or brass wire.
4. Dampers: Counterbalanced, parallel-blade, backdraft dampers mounted in curb base;
factory set to close when fan stops.
G. Curb Adapter (Provide if alternate manufacturer, than what is scheduled, is supplied): Steel
with corrosion-protection coating, gasketing, internally insulated, built to match both
manufacturers'specifications.
2.2 UPBLAST PROPELLER ROOF EXHAUST FANS
A. Manufacturers: Subject to compliance with requirements, provide products by one of the
following:
1. ACME Engineering and Manufacturing Co.
2. Carnes Company HVAC.
3. Greenheck Fan Corp.
4. Loren Cook Company.
5. New York Blower Company(The).
6. Penn Ventilation.
B. Description: Direct- or belt-driven propeller fans consisting of housing, wheel, butterfly-type
discharge damper, fan shaft,bearings,motor and disconnect switch, drive assembly, curb base,
and accessories.
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C. Wind Band, Fan Housing, and Base: Reinforced and braced aluminum, containing aluminum
butterfly dampers and rain trough,motor and drive assembly,and fan wheel.
1. Damper Rods: Steel with bronze or nylon bearings.
2. Hinged Subbase: Galvanized-steel hinged arrangement permitting service and
maintenance.
D. Fan Wheel: Replaceable, extruded-aluminum, airfoil blades fastened to cast-aluminum hub;
factory set pitch angle of blades.
E. Belt-Driven Drive Assembly: Resiliently mounted to housing; weatherproof housing of same
material as fan housing with the following features:
1. Fan Shaft: Turned,ground,and polished steel;keyed to wheel hub.
2. Shaft Bearings: Prelubricated and sealed,self-aligning,pillow-block-type ball bearings.
3. Pulleys: Cast-iron,adjustable-pitch motor pulley.
4. Motor Mount: On outside of fan cabinet,adjustable base for belt tensioning.
F. Curb Adapter (Provide if alternate manufacturer, than what is scheduled, is supplied): Steel
with corrosion-protection coating, gasketing, internally insulated, built to match both
manufacturers'specifications.
2.3 IN-LINE CENTRIFUGAL FANS
A. Manufacturers: Subject to compliance with requirements, provide products by one of the
following:
1. ACME Engineering and Manufacturing Company.
2. Carnes Company HVAC.
3. Greenheck Fan Corp. -
4. Loren Cook Company.
5. New York Blower Company(The).
6. Penn Ventilation.
B. Description: In-line, direct-driven centrifugal fans consisting of housing, wheel, outlet guide
vanes,fan shaft,bearings,motor and disconnect switch,drive assembly,mounting brackets,and
accessories.
C. Housing: Split, spun aluminum with aluminum straightening vanes, inlet and outlet flanges,
and support bracket adaptable to floor,side wall,or ceiling mounting.
D. Belt-Driven Units: Motor mounted on adjustable base, with adjustable sheaves, enclosure
around belts within fan housing, and lubricating tubes from fan bearings extended to outside of
fan housing.
E. Fan Wheels: Aluminum,airfoil blades welded to aluminum hub.
F. Accessories:
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1. Volume-Control Damper: Manually operated with quadrant lock,located in fan outlet.
2. Companion Flanges: For inlet and outlet duct connections.
3. Vibration Isolators:
a. Type: Spring hanging.
2.4 MOTORS
A. Enclosure Type: Open dripproof.
2.5 SOURCE QUALITY CONTROL
A. Sound-Power Level Ratings: Comply with AMCA 301, "Methods for Calculating Fan Sound
Ratings from Laboratory Test Data." Factory test fans according to AMCA 300, "Reverberant
Room Method for Sound Testing of Fans." Label fans with the AMCA-Certified Ratings Seal.
B. Fan Performance Ratings: Establish flow rate, pressure, power, air density, speed of rotation,
and efficiency by factory tests and ratings according to AMCA 210, "Laboratory Methods of
Testing Fans for Rating."
PART 3-EXECUTION
3.1 INSTALLATION
A. Install power ventilators level and plumb.
B. Support units using spring isolators having a static deflection of 1 inch. Vibration-and seismic-
control devices are specified in Section 230548 "Vibration and Seismic Controls for HVAC
Piping and Equipment."
1. Secure vibration and seismic controls to concrete bases using anchor bolts cast in
concrete base.
C. Secure roof-mounting fans to roof curbs with cadmium-plated hardware. Refer to Division 7
Section"Roof Accessories"for installation of roof curbs.
D. Support suspended units from structure using threaded steel rods and spring hangers having a
static deflection of 1 inch. Vibration-control devices are specified in Section 230548 "Vibration
and Seismic Controls for HVAC Piping and Equipment."
E. Install units with clearances for service and maintenance.
F. Label units according to requirements specified in Section 230553 "Identification for HVAC
Piping and Equipment."
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3.2 CONNECTIONS
A. Duct installation and connection requirements are specified in other related Sections. Drawings
indicate general arrangement of ducts and duct accessories. Make final duct connections with
flexible connectors. Flexible connectors are specified in Section 233300 "Air Duct
Accessories."
B. Install ducts adjacent to power ventilators to allow service and maintenance.
C. Ground equipment according to Section 260526 "Grounding and Bonding for Electrical
Systems."
D. Connect wiring according to Section 280513 "Conductors and Cables for Electronic Safety."
3.3 FIELD QUALITY CONTROL
A. Perform the following field tests and inspections and prepare test reports:
1. Verify that shipping,blocking,and bracing are removed.
2. Verify that unit is secure on mountings and supporting devices and that connections to
ducts and electrical components are complete. Verify that proper thermal-overload
protection is installed in motors,starters,and disconnect switches.
3. Verify that cleaning and adjusting are complete.
4. Disconnect fan drive from motor, verify proper motor rotation direction, and verify fan
wheel free rotation and smooth bearing operation. Reconnect fan drive system,align and
adjust belts,and install belt guards.
5. Adjust belt tension.
6. Adjust damper linkages for proper damper operation.
7. Verify lubrication for bearings and other moving parts.
8. Verify that volume control dampers in connected ductwork systems are in fully open
position.
9. Disable automatic temperature-control operators, energize motor and adjust fan to
indicated rpm,and measure and record motor voltage and amperage.
10. Shut unit down and reconnect automatic temperature-control operators.
11. Remove and replace malfunctioning units and retest as specified above.
B. Test and adjust controls and safeties. Replace damaged and malfunctioning controls and
equipment.
3.4 ADJUSTING
A. Adjust damper linkages for proper damper operation.
B. Adjust belt tension.
C. Refer to Section 230593 "Testing, Adjusting, and Balancing for HVAC" for testing, adjusting,
and balancing procedures.
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D. Replace fan and motor pulleys as required to achieve design airflow.
E. Lubricate bearings.
END OF SECTION 233423
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SECTION 233713 -DIFFUSERS,REGISTERS,AND GRILLES
PART 1 -GENERAL
1.1 RELATED DOCUMENTS
A. Drawings and general provisions of the Contract, including General and Supplementary
Conditions and Division 01 Specification Sections,apply to this Section.
1.2 SUMMARY
A. This Section includes diffusers,registers,and grilles for all HVAC systems.
1.3 DEFINITIONS
A. Diffuser: Circular, square, or rectangular air distribution outlet,generally located in the ceiling
and comprised of deflecting members discharging supply air in various directions and planes
and arranged to promote mixing of primary air with secondary room air.
B. Grille: A louvered or perforated covering for an opening in an air passage, which can be
located in a sidewall,ceiling,or floor.
C. Register: A combination grille and damper assembly over an air opening.
1.4 SUBMITTALS
A. Product Data: For each model indicated,include the following:
1. Data Sheet: For each type of air outlet and inlet, and accessory furnished; indicate
construction, finish, color and mounting details. Include materials and methods of
assembly.
2. Performance Data: Include throw and drop, static-pressure drop, and noise ratings for
each type of air outlet and inlet.
1.5 QUALITY ASSURANCE
A. Product Options: Drawings and schedules indicate specific requirements of diffusers, registers,
and grilles and are based on the specific requirements of the systems indicated. Other
manufacturers' products with equal performance characteristics may be considered. Refer to
Division 1 Section"Substitutions."
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PART 2-PRODUCTS
2.1 MANUFACTURERS
A. Manufacturers: Subject to compliance with requirements, provide products by one of the
following:
1. Anemostat.
2. Hart&Coolie.
3. Krueger.
4. METALAIRE,Inc.
5. Nailor Industries.
6. Price Industries.
7. Titus.
2.2 SOURCE QUALITY CONTROL
A. Testing: Test performance according to ASHRAE 70, "Method of Testing for Rating the -
Performance of Air Outlets and Inlets."
PART 3-EXECUTION
3.1 EXAMINATION
A. Examine areas where diffusers, registers, and grilles are to be installed for compliance with
requirements for installation tolerances and other conditions affecting performance of
equipment. Do not proceed with installation until unsatisfactory conditions have been
corrected.
3.2 INSTALLATION
A. Install diffusers, registers, and grilles level and plumb, according to manufacturer's written
instructions,Coordination Drawings,original design,and referenced standards.
B. Ceiling-Mounted Outlets and Inlets: Drawings indicate general arrangement of ducts, fittings,
and accessories. Air outlet and inlet locations have been indicated to achieve design
requirements for air volume, noise criteria, airflow pattern, throw, and pressure drop. Make —
final locations where indicated, as much as practicable. For units installed in lay-in ceiling
panels, locate units in the center of the panel. Where architectural features or other items
conflict with installation,notify Architect for a determination of final location.
C. Install diffusers,registers,and grilles with airtight connection to ducts and to allow service and
maintenance of dampers,air extractors,and fire dampers.
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3.3 ADJUSTING
A. After installation, adjust diffusers, registers, and grilles to air patterns indicated, or as directed,
before starting air balancing.
3.4 CLEANING
A. After installation of diffusers, registers, and grilles, inspect exposed finish. Clean exposed
surfaces to remove burrs, dirt, and smudges. Replace diffusers, registers, and grilles that have
damaged finishes.
END OF SECTION 233713
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SECTION 233813-COMMERCIAL-KITCHEN HOODS
PART I -GENERAL
1.1 RELATED DOCUMENTS
A. Drawings and general provisions of the Contract, including General and Supplementary
Conditions and Division 01 Specification Sections,apply to this Section.
1.2 SUMMARY
A. This Section includes Types I and II commercial kitchen hoods.
1.3 DEFINITIONS
A. Listed Hood: A hood tested according to UL 710 by a testing agency acceptable to authorities
having jurisdiction.
B. Standard Hood: A hood that complies with design, construction, and performance criteria of
applicable national and local codes.
C. Type I Hood: A hood designed for grease exhaust applications.
D. Type II Hood: A hood designed for heat and steam removal and other nongrease applications.
1.4 SUBMITTALS
A. Product Data: For the following:
1. Hoods.
2. Grease removal devices.
3. Fire-suppression systems.
4. Lighting fixtures.
B. Shop Drawings:
1. Show plan view,elevation view, sections,roughing-in dimensions,service requirements,
duct connection sizes,and attachments to other work.
2. Show cooking equipment plan and elevation to confirm minimum code-required
overhang.
3. Indicate performance,exhaust and makeup air airflow and pressure loss,at actual Project-
site elevation.
4. Indicate method of attaching hangers to building structure.
5. Show exhaust and makeup air ducts,and fittings connecting to hoods.
6. Show water-supply and drain piping.
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7. Show control cabinets.
8. Show fire-protection piping,actuation devices,and manual control devices.
9. Detail equipment assemblies and indicate dimensions, weights, loads, required
clearances, method of field assembly, components, and location and size of each field
connection.
10. Design Calculations: Calculate requirements for selecting seismic restraints.
11. Wiring Diagrams: Power,signal,and control wiring.
C. Piping Diagrams: Detail fire-suppression piping and components and differentiate between
manufacturer-installed and field-installed piping. Include roughing-in requirements for drain
connections. Show cooking equipment plan and elevation to illustrate fire-suppression nozzle
locations.
D. Field test reports.
1.5 QUALITY ASSURANCE
A. Electrical Components, Devices, and Accessories: Listed and labeled as defined in NFPA 70,
Article 100, by a testing agency acceptable to authorities having jurisdiction, and marked for
intended use.
B. NSF Compliance: Fabricate hoods according to NSF 2, "Food Equipment."
C. SMACNA Compliance:
1. Comply with SMACNA's "Kitchen Equipment Fabrication Guidelines," Appendix 1,
"Guidelines for Seismic Restraints of Kitchen Equipment."
2. Fabricate hoods to comply with SMACNA's "HVAC Duct Construction Standards:
Metal and Flexible," second edition.
1.6 COORDINATION
A. Coordinate equipment layout and installation with other Work, including light fixtures, HVAC
equipment,and fire-suppression system components.
PART 2 -PRODUCTS
2.1 MANUFACTURERS
A. Manufacturers: Subject to compliance with requirements, provide products by one of the
following:
I. Commercial Kitchen Hoods:
a. Captive-Aire Systems.
b. Duo-Aire, Inc.
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c. Gaylord Industries,Inc.
d. Greenheck.
e. Halton Company.
2. Wet-Chemical Fire-Suppression Systems:
a. Ansul Incorporated;a Tyco International Ltd.Company.
b. Badger Fire Protection,Inc.
c. Fenwall Safety Systems,Inc.;Div.of Kidde Technologies, Inc.
d. Pyro Chem,Inc.
2.2 HOOD MATERIALS
A. Stainless-Steel Sheet: ASTM A 666,Type 304 or Type 430 SS.
1. Minimum Thickness: 0.03-inch.
2. General: Comply with SSINA's "Finishes for Stainless Steel" for recommendations for
applying and designating finishes.
3. Remove tool and die marks and stretch lines or blend into finish. Grind and polish
surfaces to produce uniform, directionally textured, polished finish indicated, free of
cross scratches. Run grain with long dimension of each piece.
4. Concealed Stainless-Steel Surfaces: ASTM A 480/A 480M,No. 2B finish (bright,cold-
rolled,unpolished finish).
5. Exposed Surfaces: ASTM A 480/A 480M,No.3 finish(intermediate polished surface).
6. Exposed Surfaces: ASTM A 480/A 480M,No.4 finish(bright,directional polish).
7. When polishing is completed, passivate and rinse surfaces. Remove embedded foreign
matter and leave surfaces chemically clean.
B. Carbon-Steel Sheets: ASTM A 366/A 366M, cold-rolled sheets; commercial quality; with
oiled,exposed matte finish.
C. Galvanized Steel Sheet: Lock-forming quality; ASTM A 653/A 653M, G90 coating
designation;mill-phosphatized finish for surfaces of ducts exposed to view.
1. Minimum Thickness: 0.03-inch.
D. Zinc-Coated Steel Shapes: ASTM 36/A 36M,zinc coated according to ASTM A 123/A I 23M
requirements.
E. Sealant: ASTM C 920;Type S,Grade NS,Class 25,Use NT. Elastomeric sealant shall be NSF
certified for commercial kitchen hood application. Sealants, when cured and washed, shall
comply with requirements in 21 CFR, Section 177.2600, for use in areas that come in contact
with food.
1. Color: As selected by Architect from manufacturer's full range.
2. Backer Rod: Closed-cell polyethylene,in diameter larger than joint width.
F. Sound Dampening: NSF-certified, nonabsorbent, hard-drying, sound-deadening compound for
permanent adhesion to metal in minimum 1/8-inch thickness that does not chip,flake,or blister.
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G. Gaskets: NSF certified for end-use application indicated; of resilient rubber,neoprene,or PVC
that is nontoxic, stable, odorless, nonabsorbent, and unaffected by exposure to foods and
cleaning compounds,and passes testing according to UL 710.
2.3 HOOD FABRICATION,GENERAL
A. Welding: Use welding rod of same composition as metal being welded. Use methods that
minimize distortion and develop strength and corrosion resistance of base metal. Make ductile
welds free of mechanical imperfections such as gas holes,pits,or cracks.
1. Welded Butt Joints: Full-penetration welds for full joint length. Make joints flat,
continuous, and homogenous with sheet metal without relying on straps under seams,
filling in with solder,or spot welding.
2. Grind exposed welded joints flush with adjoining material and polish to match adjoining
surfaces.
3. Where fasteners are welded to underside of equipment, finish reverse side of weld
smooth and flush.
4. Coat concealed stainless-steel welded joints with metallic-based paint to prevent
corrosion. -
5. After zinc-coated steel is welded, clean welds and abraded areas and apply SSPC-Paint
20, high-zinc-dust-content, galvanizing repair paint to comply with ASTM A 780/A
780M.
B. For metal butt joints,comply with SMACNA's"Kitchen Equipment Fabrication Guidelines."
C. Where stainless steel is joined to a dissimilar metal, use stainless-steel welding material or
fastening devices.
D. Form metal with break bends that are not flaky, scaly, or cracked in appearance; where breaks
mar uniform surface appearance of material, remove marks by grinding, polishing, and-
finishing.
E. Sheared Metal Edges: Finish free of burrs,fins,and irregular projections.
F. In food zones,as defined in NSF,fabricate surfaces free from exposed fasteners.
G. Cap exposed fastener threads, including those inside cabinets, with stainless-steel lock washers
and stainless-steel cap(acorn)nuts.
H. Fabricate pipe slots on equipment with turned-up edges sized to accommodate service and
utility lines and mechanical connections.
I. Fabricate enclosures, including panels, housings, and skirts, to conceal service lines, operating
components, and mechanical and electrical devices including those inside cabinets, unless
otherwise indicated.
J. Fabricate seismic restraints according to SMACNA's "Kitchen Equipment Fabrication
Guidelines,"Appendix 1,"Guidelines for Seismic Restraints of Kitchen Equipment."
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K. Fabricate equipment edges and backsplashes according to SMACNA's "Kitchen Equipment
Fabrication Guidelines."
L. Fabricate enclosure panels to ceiling and wall as follows:
1. Fabricate panels on all exposed sides with same material as hood, and extend from
ceiling to top of hood canopy and from canopy to wall.
2. Wall Offset Spacer: Minimum of 3 inches.
3. Wall Shelves and Overshelves: Fabricate according to SMACNA's "Kitchen Equipment
Fabrication Guidelines,"with minimum 0.0625-inch thick,stainless-steel shelf tops.
2.4 TYPE I EXHAUST HOOD FABRICATION
A. Weld all joints exposed to grease with continuous welds and make grease removal devices and
makeup air diffusers easily accessible for cleaning.
1. Hoods shall be listed and labeled,according to UL 710,by a testing agency acceptable to
authorities having jurisdiction.
2. Exhaust-Duct Collars: Minimum 0.0625-inch thick stainless steel at least 3 inches long,
continuously welded to top of hood and at corners.
B. Hood Configuration: Exhaust only, Exhaust with makeup air, Exhaust with makeup and air-
conditioning air.
1. Makeup and air-conditioning air shall be introduced through laminar-flow-type
perforated metal panels on front of hood canopy.
C. Hood Style: Wall-mounted canopy.
D. Grease Removal Devices: Removable,stainless-steel,filter/baffle grease filters. Fabricate with
minimum 0.0781-inch thick stainless steel for filter frame and removable collection cup and
trough. Exposed surfaces shall be pitched to drain to.collection cup. Filters/baffles shall
comply with UL 1046, "Grease Filters for Exhaust Ducts."
E. Light Fixtures: UL-listed,surface-mounted,incandescent fixtures and lamps with lenses sealed
vaportight. Wiring shall be installed in stainless-steel conduit on hood exterior. Number and
location of fixtures shall provide a minimum of 70 fc on cooking surface below hood.
1. Switches shall be mounted on front panel of hood canopy.
2. Fluorescent Lighting Fixtures: Comply with UL 1570.
3. Incandescent Lighting Fixtures: Comply with UL 1571.
F. Wet-Chemical Fire-Suppression System: Preengineered distribution piping designed for
automatic detection and release or manual release of fire-suppression agent by hood operator.
Fire-suppression system shall be listed and labeled by a testing agency acceptable to authorities
having jurisdiction.
1. Steel Pipe,NPS 2 and Smaller: ASTM A 53/A 53M, Type S, Grade A, Schedule 40,
plain ends.
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2. Malleable-Iron Threaded Fittings: ASME B16.3,Classes 150 and 300.
3. Pipe Covers: Chrome-plated aluminum tubing.
4. Piping, fusible links and release mechanism, tank containing the suppression agent, and
controls shall be factory installed. Controls shall be in stainless-steel control cabinet
mounted on hood or wall. Furnish manual pull station for wall mounting adjacent to
hood. Exposed piping shall be covered with stainless-steel sleeves. Exposed fittings
shall be chrome plated.
5. Liquid Extinguishing Agent: Noncorrosive,low-pH liquid.
6. Furnish an electric-operated, gas shutoff valve with clearly marked open and closed
indicator for field installation.
7. Fire-suppression system controls shall be integrated with controls for fans, lights, and
fuel supply and located in a single cabinet for each group of hoods immediately adjacent.
8. Wiring shall have color-coded, numbered terminal blocks and grounding bar. Spare
terminals for fire alarm, optional wiring to start fan with fire alarm, red pilot light to
indicate fan operation, and control switches shall all be factory wired in control cabinet
with relays or starters.
G. Hood Controls: Single, hood or wall-mounting control cabinet shall control groups of adjacent
hoods and shall be fabricated of stainless steel.
1. Exhaust Fan: On-off switches shall start and stop the exhaust fan. Interlock exhaust fan
with makeup air supply fan to operate simultaneously. Interlock exhaust fan with fire-
suppression system to operate fan(s) during fire-suppression-agent release and to remain
in operation until manually stopped. Motor starters shall comply with Division Section
262913 "Enclosed Controllers."
2. Photocell and Temperature Control: Vary speed of exhaust and makeup air fans with
variable frequency controllers, based on temperature at hood discharge and opacity of
smoke in hood. Interlock fan control with fire-suppression system to operate at high
speed during fire-suppression-agent release and to remain in high-speed operation until
manually stopped. Provide air-purge fan and conduit to photocell and reflector to avoid
grease accumulation that will negatively affect performance of system.
3. High-Temperature Control: Alarm shall sound and cooking equipment shall shut down
before hood discharge temperature rises to actuation temperature of fire-suppression
system.
2.5 TYPE II EXHAUST HOOD FABRICATION
A. SMACNA Compliance: Fabricate hoods to comply with SMACNA's "HVAC Duct
Construction Standards: Metal and Flexible,"second edition.
B. Fabricate hoods with stainless steel.
C. Hood Configuration: Exhaust only.
D. Hood Type: Heat and vapor removal.
E. Hood Style: Single-island canopy.
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PART 3-EXECUTION
3.1 EXAMINATION
A. Examine substrates and conditions,with Installer present,for compliance with requirements for
installation tolerances and other conditions affecting installation.
B. Examine roughing-in for piping systems to verify actual locations of piping connections before
equipment installation.
C. Proceed with installation only after unsatisfactory conditions have been corrected.
3.2 INSTALLATION
A. Install hoods level and plumb.
B. Complete field assembly of hoods where required.
1. Make closed butt and contact joints that do not require filler.
2. Grind field welds on stainless-steel equipment smooth, and polish to match adjacent
finish. Comply with welding requirements in Part 2"General Hood Fabrication"Article.
C. Install hoods and associated services with clearances and access for maintaining, cleaning, and
servicing hoods, grease removal devices, and fire-suppression systems according to
manufacturer's written instructions and requirements of authorities having jurisdiction.
D. Make cutouts in hoods where required to run service lines and to make final connections.
E. Securely anchor and attach items and accessories to walls, floors, or bases with stainless-steel
fasteners,unless otherwise indicated.
F. Install hoods to operate free from vibration.
G. Install seismic restraints according to SMACNA's"Kitchen Equipment Fabrication Guidelines,"
Appendix 1,"Guidelines for Seismic Restraints for Kitchen Equipment."
H. Install trim strips and similar items requiring fasteners in a bed of sealant. Fasten with stainless-
steel fasteners at 48 inches o.c.maximum.
I. Install sealant in joints between equipment and abutting-surfaces with continuous joint backing,
unless otherwise indicated. Provide airtight,watertight,vermin-proof,sanitary joints.
J. Install lamps,with maximum recommended wattage,in equipment with integral lighting.
3.3 CONNECTIONS
A. Install piping adjacent to machine with clearance to allow service and maintenance.
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B. Install reduced-pressure backflow preventer on washer-water supply.
C. Install washer-water drain piping full size of hood connection to an adjacent floor drain or floor
sink.
D. Duct Connections: Comply with applicable requirements in Section 233300 "Air Duct
Accessories" for flexible connectors on makeup air supply duct. Weld exhaust-duct
connections.
E. Fire-Suppression Piping: Install piping connections for remote-mounted suppression systems
according to NFPA 17,"Wet Chemical Extinguishing Systems."
F. Ground equipment.
G. Tighten electrical connectors and terminals according to manufacturer's published torque-
tightening values. If manufacturer's torque values are not indicated, use those specified in UL
486A and UL 486B.
3.4 FIELD QUALITY CONTROL
A. Testing: See Section 230593 "Testing,Adjusting and Balancing."
B. Remove malfunctioning units,replace with new units,and retest as specified above.
3.5 ADJUSTING
A. Set initial temperatures,and calibrate sensors.
B. Set field-adjustable switches.
3.6 CLEANING
A. Remove protective coverings and clean and sanitize hoods and associated services, both inside
and out,according to manufacturer's written instructions.
B. Remove paint splatters and other spots, dirt, and debris. Repair damaged finish to match
original finish.
END OF SECTION 233813
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SECTION 235100-BREECHINGS,CHIMNEYS,AND STACKS
PART 1 -GENERAL
1.1 SUMMARY
A. This Section includes the following:
1. Listed condensing-gas appliance vents.
1.2 SUBMITTALS
A. Product Data: Manufacturers literature with material gages, product listing and furnished
accessories.
B. Shop Drawings: For vents, breechings, chimneys, and stacks. Include plans, elevations,
sections,details,and attachments to other work.
1. Detail equipment assemblies and indicate dimensions, weights, loads, required
clearances, methods of field assembly, components, hangers and seismic restraints, and
location and size of each field connection.
C. Welding certificates.
1.3 QUALITY ASSURANCE
A. Source Limitations: Obtain listed system components through one source from a single
manufacturer.
B. Welding: Qualify procedures and personnel according to AWS D1.1/D1.1M, "Structural
Welding Code--Steel," for hangers and supports and AWS D9.1/D9.IM, "Sheet Metal Welding
Code,"for shop and field welding of joints and seams in vents,breechings,and stacks.
C. Certified Sizing Calculations: Manufacturer shall certify venting system sizing calculations.
PART 2-PRODUCTS
2.1 LISTED CONDENSING-GAS APPLIANCE VENTS
A. Manufacturers:
1. Metal-Fab,Inc.
2. Protech Systems,Inc.
3. Schebler,Inc.
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B. Description: Double-wall metal vents tested according to UL 1738 and rated for 480 deg F
continuously,with positive or negative flue pressure complying with NFPA 211 and suitable for
condensing-gas appliances.
C. Construction: Inner shell and outer jacket separated by at least a 1/2-inch airspace.
D. Inner Shell: ASTM A 959,Type 29-4C stainless steel.
E. Outer Jacket: Aluminized steel.
F. Accessories: Tees, elbows, increasers, draft-hood connectors, terminations, adjustable roof
flashings,storm collars,support assemblies,thimbles,firestop spacers,and fasteners;fabricated
from similar materials and designs as vent-pipe straight sections;all listed for same assembly.
1. Termination: Manufacturers standard wall or any roof termination as indicated.
2.2 GUYING AND BRACING MATERIALS
A. Cable: Three galvanized,stranded wires of a size determined by the manufacturer.
PART 3-EXECUTION
3.1 INSTALLATION OF LISTED VENTS AND CHIMNEYS
A. Locate to comply with minimum clearances from combustibles and minimum termination
heights according to product listing or NFPA 211,whichever is most stringent.
B. Seal between sections of positive-pressure vents and grease exhaust ducts according to -
manufacturer's written installation instructions,using sealants recommended by manufacturer.
C. Support vents at intervals recommended by manufacturer to support weight of vents and all
accessories,without exceeding appliance loading.
D. Slope breechings down in direction of appliance, with condensate drain connection at lowest
point piped to nearest drain.
E. Join sections with acid-resistant joint cement to provide continuous joint and smooth interior
finish.
F. Erect stacks plumb to finished tolerance of no more than 1 inch out of plumb from top to
bottom.
3.2 CLEANING
A. After completing system installation, including outlet fittings and devices, inspect exposed
finish. Remove burrs,dirt,and construction debris and repair damaged finishes.
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B. Clean breechings internally, during and after installation, to remove dust and debris. Clean
external surfaces to remove welding slag and mill film. Grind welds smooth and apply touchup
finish to match factory or shop finish.
C. Provide temporary closures at ends of breechings, chimneys, and stacks that are not completed
or connected to equipment.
END OF SECTION 235100
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SECTION 235523-GAS-FIRED RADIANT HEATERS
PART 1 -GENERAL
1.1 RELATED DOCUMENTS
A. Drawings and general provisions of the Contract, including General and Supplementary
Conditions and Division 01 Specification Sections,apply to this Section.
1.2 SUMMARY
A. This Section includes gas-fired,tubular infrared and high-intensity infrared radiant heaters.
1.3 SUBMITTALS
A. Product Data: For each type of gas-fired radiant heater indicated. Include rated capacities,
operating characteristics,and accessories.
1.4 QUALITY ASSURANCE
A. Electrical Components, Devices, and Accessories: Listed and labeled as defined in NFPA 70,
Article 100, by a testing agency acceptable to authorities having jurisdiction, and marked for
intended use.
1.5 WARRANTY
A. Special Warranty: Manufacturer's standard form in which manufacturer agrees to repair or
replace components of gas-fired radiant heater that fails in materials or workmanship within
specified warranty period.
1. Warranty Period: Three years from date of Substantial Completion.
PART 2-PRODUCTS
2.1 TUBULAR INFRARED HEATERS
A. Manufacturers: Subject to compliance with requirements, provide products by one of the
following:
1. Arabi-Rad.
2. Perfection-Schwank,Inc.
3. Reflect-O-Ray,Combustion Research Corporation.
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4. Re-Verber-Ray,Detroit Radiant Products Company.
5. Reznor/Thomas and Betts.
6. Roberts-Gordon,Inc.
7. Solaronics Inc.
B. Description: Factory assembled, piped, and wired, and complying with
ANSI Z83.20/CSA 2.34.
1. Fuel Type: Design burner for natural gas having characteristics same as those of gas
available at Project site.
2. AGA Approval: Designed and certified by and bearing label of American Gas
Association.
C. Combustion Tubing: 4-inch-diameter stainless or aluminized steel with high-emissivity,high-
temperature,corrosion-resistant external finish.
D. Tubing Connections: Stainless-steel couplings or flared joints with stainless-steel draw bolts.
E. Reflector: 0.024 Stainless Steel Type 304, with end caps. Shape to control radiation from
tubing for uniform intensity-at floor level with 100 percent cutoff above centerline of tubing.
Provide for rotating reflector or heater around a horizontal axis for minimum 30-degree tilt from
vertical.
1. Reflector Extension Shields: Same material as reflectors, arranged for fixed connection
to lower reflector lip and rigid support to provide 100 percent cutoff of direct radiation
from tubing at angles greater than 30 degrees from vertical.
2. Include hanger kit.
F. Burner Safety Controls:
1. Gas Control Valve: Single-stage,regulated redundant 24-V ac gas valve containing pilot
solenoid valve, electric gas valve, pilot filter, pressure regulator, pilot shutoff, and
manual shutoff all in one body.
2. Blocked Vent Safety: Differential pressure switch in burner safety circuit to stop burner
operation with high discharge or suction pressure.
3. Control Panel Interlock: Stops burner if panel is open.
4. Indicator Lights: Burner-on indicator light.
G. Burner and Emitter Type: Gravity-vented power burner,with the following features:
1. Emitter Tube: 4-inch-diameter, aluminized-steel tubing with sight glass for burner and
pilot flame observation.
2. Venting: Rain cap at exit end of emitter tubing.
a. Vent Terminal: Horizontal.
3. Burner/Ignition: Stainless-steel burner cup and head with balanced-rotor draft fan and
direct-sensing,hot-surface ignition.
4. Combustion-Air Connection: Duct connection for combustion air to be drawn directly
from outdoors by burner fan.
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2.2 CONTROLS
A. Building energy management system: The building's energy management system shall control
operation of heater.
PART 3 -EXECUTION
3.1 INSTALLATION
A. Install and connect gas-fired radiant heaters and associated fuel and vent features and systems
according to NFPA 54, applicable local codes and regulations, and manufacturer's written
installation instructions.
B. Suspended Units: Suspend from substrate using chain hanger kits and building attachments.
C. Maintain manufacturers'recommended clearances to combustibles.
3.2 CONNECTIONS
A. Piping installation requirements are specified in other Division 23 Sections. Drawings indicate
general arrangement of piping,fittings,and specialties.
B. Install piping adjacent to gas-fired radiant heaters to allow service and maintenance.
C. Gas Piping: Comply with Division 23 Section "Facility Natural-Gas Piping." Connect gas
piping to gas train inlet;provide union with enough clearance for burner removal and service.
D. Electrical Connections: Comply with applicable requirements in Division 26 Sections.
1. Install electrical devices furnished with heaters but not specified to be factory mounted.
3.3 FIELD QUALITY CONTROL
A. Tests and Inspections:
1. Test and adjust controls and safeties. Replace damaged and malfunctioning controls and
equipment.
2. Verify bearing lubrication.
3. Verify proper motor rotation.
4. Test Reports: Prepare a written report to record the following:
a. Test procedures used.
b. Test results that comply with requirements.
c. Test results that do not comply with requirements and corrective action taken to
achieve compliance with requirements.
B. Remove and replace malfunctioning units and retest as specified above.
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3.4 ADJUSTING
A. Adjust initial temperature set points.
B. Adjust burner and other unit components for optimum heating performance and efficiency.
END OF SECTION 235523
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SECTION 235533-FUEL-FIRED UNIT HEATERS
PART 1 -GENERAL
1.1 RELATED DOCUMENTS
A. Drawings and general provisions of the Contract, including General and Supplementary
Conditions and Division 01 Specification Sections,apply to this Section.
1.2 SUMMARY
A. This Section includes gas-fired unit heaters.
1.3 SUBMITTALS
A. Product Data: For each type of fuel-fired unit heater indicated. Include rated capacities,
operating characteristics,and accessories.
1.4 QUALITY ASSURANCE
A. Electrical Components, Devices, and Accessories: Listed and labeled as defined in NFPA 70,
Article 100, by a testing agency acceptable to authorities having jurisdiction, and marked for
intended use.
B. ASHRAE/IESNA 90.1-2004 Compliance: Applicable requirements in ASHRAE/IESNA 90.1-
2004, Section 6-"Heating,Ventilating,and Air-Conditioning."
1.5 WARRANTY
A. Special Warranty: Manufacturer's standard form in which manufacturer agrees to repair or
replace heat exchanger of fuel-fired unit heater that fails in materials or workmanship within
specified warranty period.
I. Warranty Period: Nine years from date of Substantial Completion.
PART 2-PRODUCTS
2.1 GAS-FIRED UNIT HEATERS
A. Manufacturers: Subject to compliance with requirements, provide products by one of the
following:
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1. Lennox Industries,Inc.
2. Modine Manufacturing Company.
3. Reznor/Thomas&Betts Corporation.
4. Sterling HVAC Products;Div.of Mestek Technology Inc.
5. Trane Company(The).
B. Description: Factory assembled,piped,and wired,and complying with ANSI Z83.8/CSA 2.6.
1. Fuel Type: Design burner for natural gas having characteristics same as those of gas
available at Project site.
2. AGA Approval: Designed and certified by and bearing label of American Gas
Association.
C. Type of Venting: Separated combustion,power vented.
D. Housing: Steel,with integral draft hood and inserts for suspension mounting rods.
1. External Casings and Cabinets: Powder coating over corrosion-resistant-treated surface.
2. Finish: Manufacturer's standard paint applied to factory-assembled and tested, fuel-fired
unit heater before shipping.
E. Heat Exchanger: Aluminized steel.
F. Burner Material: Stainless steel.
G. Unit Fan: Formed-steel propeller blades riveted to heavy-gage steel spider bolted to cast-iron
hub,dynamically balanced,and resiliently mounted.
1. Fan-Blade Guard: Galvanized steel,complying with OSHA specifications,removable for
maintenance.
2. Motors: Open drip proof and complying with Division 23 Section "Common Motor
Requirements for HVAC Equipment."
3. Motor Sizes: Minimum size as indicated. If not indicated, large enough so driven load
will not require motor to operate in service factor range above 1.0.
4. Controllers, Electrical Devices, and Wiring: Electrical devices and connections are
specified in Division 26 Sections.
H. Controls: Regulated redundant gas valve containing pilot solenoid valve, electric gas valve,
pilot filter,pressure regulator,pilot shutoff,and manual shutoff all in one body.
1. Gas Control Valve: Single stage.
2. Ignition: Electronically controlled electric spark with flame sensor.
3. Fan Thermal Switch: Operates fan on heat-exchanger temperature.
4. Vent Flow Verification: Flame rollout switch.
5. Control transformer.
6. High Limit: Thermal switch or fuse to stop burner.
I. Discharge Louvers: Independently adjustable horizontal blades.
J. Accessories:
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1. Four-point suspension kit.
2. Summer fan switch.
3. Concentric, Terminal Vent Assembly: Combined combustion-air inlet and power-vent
outlet with wall or roof caps. Include adapter assembly for connection to inlet and outlet
pipes,and flashing for wall or roof penetration.
PART 3-EXECUTION
3.1 INSTALLATION
A. Install and connect gas-fired unit heaters and associated fuel and vent features and systems
according to NFPA 54, applicable local codes and regulations, and manufacturer's written
installation instructions.
B. Suspended Units: Suspend from substrate using threaded rods, spring hangers, and building
attachments. Secure rods to unit hanger attachments. Adjust hangers so unit is level and
plumb.
1. Restrain the unit to resist code-required horizontal acceleration.
3.2 CONNECTIONS
A. Piping installation requirements are specified in other Division 23 Sections. Drawings indicate
general arrangement of piping,fittings,and specialties.
B. Install piping adjacent to fuel-fired unit heater to allow service and maintenance.
C. Gas Piping: Comply with applicable Division 23 Section for fuel-gas piping requirements.
Connect gas piping to gas train inlet; provide union with enough clearance for burner removal
and service.
D. Electrical Connections: Comply with applicable requirements in Division 26 Sections.
1. Install electrical devices furnished with heaters but not specified to be factory mounted.
3.3 FIELD QUALITY CONTROL
A. Tests and Inspections:
1. Test and adjust controls and safeties. Replace damaged and malfunctioning controls and
equipment.
2. Verify bearing lubrication.
3. Verify proper motor rotation.
4. Test Reports: Prepare a written report to record the following:
a. Test procedures used.
b. Test results that comply with requirements.
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c. Test results that do not comply with requirements and corrective action taken to
achieve compliance with requirements.
B. Remove and replace malfunctioning units and retest as specified above.
3.4 ADJUSTING
A. Adjust initial temperature set points.
B. Adjust burner and other unit components for optimum heating performance and efficiency.
END OF SECTION 235533
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SECTION 237400-PACKAGED OUTDOOR HVAC EQUIPMENT
PART 1 -GENERAL
1.1 RELATED DOCUMENTS
A. Drawings and general provisions of the Contract, including General and Supplementary
Conditions and Division 01 Specification Sections,apply to this Section.
1.2 SUMMARY
A. This Section includes the cooling and heating packaged outdoor HVAC equipment:
1.3 SUBMITTALS
A. Product Data: Include manufacturer's technical data for each model indicated, including rated
capacities, dimensions, required clearances, characteristics, furnished specialties, and
accessories.
B. Shop Drawings: Detail equipment assemblies and indicate dimensions,weights,loads,required
clearances, method of field assembly, components, and location and size of each field
connection. Prepare the following by or under the supervision of a qualified professional
engineer:
1. Wiring Diagrams: Power,signal,and control wiring.
C. Manufacturer Seismic Qualification Certification: Submit certification that packaged outdoor
HVAC equipments, accessories, and components will withstand seismic forces defined in
Division 23 Section"Mechanical Vibration and Seismic Controls." Include the following:
1. Basis for Certification: Indicate whether withstand certification is based on actual test of
assembled components or on calculation.
a. The term "withstand" means "the unit will remain in place without separation of
any parts from the device when subjected to the seismic forces specified."
b. The term "withstand" means "the unit will remain in place without separation of
any parts from the device when subjected to the seismic forces specified and the
unit will be fully operational after the seismic event."
2. Dimensioned Outline Drawings of Equipment Unit: Identify center of gravity and locate
and describe mounting and anchorage provisions.
3. Detailed description of equipment anchorage devices on which the certification is based
and their installation requirements.
D. Field quality-control test reports.
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E. Operation and Maintenance Data: For packaged outdoor HVAC equipment to include in
emergency,operation,and maintenance manuals.
F. Warranties: Special warranties specified in this Section.
1.4 QUALITY ASSURANCE
A. Product Options: Drawings indicate size, profiles, and dimensional requirements of packaged
outdoor HVAC equipment and are based on the specific system indicated. Refer to Division 01
Section"Product Requirements."
B. Electrical Components, Devices, and Accessories: Listed and labeled as defined in NFPA 70,
Article 100, by a testing agency acceptable to authorities having jurisdiction, and marked for
intended use.
C. ARI Certification: Units shall be ARI certified and listed.
1.5 COORDINATION
A. Coordinate installation of roof curbs, equipment supports, and roof penetrations. These items
are specified in Division 07 Section"Roof Accessories."
1.6 WARRANTY
A. Special Warranty: Manufacturer's standard form in which manufacturer agrees to replace
components of packaged outdoor HVAC equipment that fail in materials or workmanship
within specified warranty period.
1. Warranty Period for Compressors: Manufacturer's standard, but not less than five years
from date of Substantial Completion.
2. Warranty Period for Heat Exchangers: Manufacturer's standard, but not less than 10
years from date of Substantial Completion.
3. Warranty Period for Solid-State Ignition Modules: Manufacturer's standard,but not less
than three years from date of Substantial Completion.
4. Warranty Period for Control Boards: Manufacturer's standard, but not less than three
years from date of Substantial Completion.
PART 2-PRODUCTS
2.1 PACKAGED OUTDOOR HVAC EQUIPMENT
A. Manufacturers:
1. AAON, Inc.
2. Carrier Corp.
3. Engineered Air.
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4. Lennox Industries Inc.
5. McQuay International.
6. Trane Company(The);North American Commercial Group.
7. YORK International Corporation.
B. Description: Factory assembled and tested; designed for exterior installation; consisting of
compressor, indoor and outside refrigerant coils, indoor fan and outside coil fan, refrigeration
and temperature controls,filters,and dampers.
C. Casing: Galvanized-steel construction with enamel paint finish, removable panels or access
doors with neoprene gaskets for inspection and access to internal parts,minimum 1/2-inch thick
thermal insulation, knockouts for electrical and piping connections, exterior condensate drain
connection,and lifting lugs.
D. Indoor Fan: Forward curved,centrifugal,directly driven by multispeed or belt driven by single-
speed motor.
E. Outside Coil Fan: Propeller type,directly driven by motor.
F. -Refrigerant Coils: Aluminum-plate fin and seamless copper tube in steel casing with
equalizing-type vertical distributor.
G. Compressor: Hermetic reciprocating or scroll compressor with integral vibration isolators,
internal overcurrent and overtemperature protection and internal pressure relief.
H. Refrigeration System:
1. Compressor.
2. Outside coil and fan.
3. Indoor coil and fan.
-4. Expansion valve with replaceable thermostatic element.
5. Refrigerant dryer.
6. High-pressure switch.
7. Low-pressure switch.
8. Thermostat for coil freeze-up protection during low-ambient temperature operation or
loss of air.
9. Low-ambient switch.
10. Brass service valves installed in discharge and liquid lines.
11. Charge of refrigerant.
12. Timed Off Control: Automatic-reset control shuts compressor off after five minutes.
13. Refrigerant Circuits: Interlaced refrigerant-coil circuiting with circuit for each
compressor.
14. Capacity Control for larger than 15 Ton Units: Hot-gas bypass valve and piping on one
compressor.
15. Compressor Motor Overload Protection: Manual reset.
16. Antirecycling Timing Device: Prevents compressor restart for five minutes after
shutdown.
17. Adjustable, Low-Ambient, Head-Pressure Control: Designed to operate at temperatures
as low as 0 deg F by cycling outside coil fans and controlling speed of last fan of each
circuit.
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18. Oil-Pressure Switch: Designed to shut down compressors on low oil pressure.
I. Filters: 2 inch or 1 inch thick,pleated,throwaway filters in filter rack.
J. Heat Exchanger: Stainless-steel construction for natural-gas-fired burners with the following
controls:
1. Redundant single or dual gas valve with manual shutoff.
2. Direct-spark pilot ignition.
3. Electronic flame sensor.
4. Induced-draft blower.
5. Flame rollout switch.
K. Economizer: Return-and outside-air dampers with neoprene seals,outside-air filter,and hood.
1. Damper Motor: Fully modulating spring return with adjustable minimum position.
2. Control: Electronic-control system uses outside-air temperature to adjust mixing
dampers.
3. Relief Damper: Gravity actuated with bird screen and hood.
L. Condenser Coil Hail Guards: Factory installed vinyl coated wire mesh guards.
M. Power Connection: Provide for single connection of power to unit with unit-mounted
disconnect switch accessible from outside unit and control-circuit transformer with built-in
circuit breaker.
N. Unit Controls: Solid-state control board and components contain at least the following features:
1. Indoor fan on/off delay.
2. Default control to ensure proper operation after power interruption.
3. Service relay output.
4. Unit diagnostics and diagnostic code storage.
5. Field-adjustable control parameters.
6. Defrost control.
7. Economizer control.
8. Gas valve delay between first-and second-stage firing.
9. Indoor-air quality control with carbon dioxide sensor.
10. Low-ambient control,allowing operation down to 0 deg F.
11. Minimum run time.
12. Return-air temperature limit.
13. Smoke alarm with smoke detector installed in return air.
14. Low-refrigerant pressure control.
O. Direct Digital Controls: Install stand-alone control module providing link between unit controls
and DDC system. Control module shall be compatible with temperature-control system
specified in Division 23 Section"HVAC Instrumentation and Controls."
P. Optional Accessories:
1. Cold-Weather Kit: Electric heater maintains temperature in gas burner compartment.
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2. Service Outlets: Two, 115-V,ground-fault,circuit-interrupter type.
3. Condensate drain trap.
4. Coil hail guards painted to match casing.
Q. Curb Adapter (Provide if alternate manufacturer, than what is scheduled, is supplied): Steel
with corrosion-protection coating, gasketing, internally insulated, built to match both
manufacturers'specifications.
2.2 MOTORS
A. Comply with requirements in Division 23 Section"Motors."
PART 3-EXECUTION
3.1 INSTALLATION
A. Install units level and plumb,maintaining manufacturer's recommended clearances.
B. Curb Adapter(If alternate manufacturer,than what is scheduled, is supplied): Install roof curb
adapter on existing roof curb, level and secure, according to manufacturer's installation
instructions. Install and secure packaged outdoor HVAC equipment on curb adapters and
secure per ARI Guideline B.
3.2 CONNECTIONS
A. Piping installation requirements are specified in other Division 23 Sections. Drawings indicate
general arrangement of piping,fittings,and specialties. -
B. Install piping adjacent to machine to allow service and maintenance.
1. Gas Piping: Comply with applicable requirements in Division 23 Sections regarding fuel
gas piping. Connect gas piping to burner, full size of gas train inlet, and connect with
union and shutoff valve with sufficient clearance for burner removal and service.
C. Duct installation requirements are specified in other Division 23 Sections. Drawings indicate
the general arrangement of ducts. The following are specific connection requirements:
1. Install ducts to termination in roof curb. —
2. Remove roof decking only as required for passage of ducts. Do not cut out decking
under entire roof curb.
3. Connect supply ducts to rooftop unit with flexible duct connectors specified in Division
23 Section"Air Duct Accessories."
D. Electrical System Connections: Comply with applicable requirements in Division 26 Sections
for power wiring,switches,and motor controls.
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E. Ground equipment according to Division 26 Section "Grounding and Bonding for Electrical
Systems."
F. Tighten electrical connectors and terminals according to manufacturer's published torque-
tightening values. If manufacturer's torque values are not indicated, use those specified in UL
486A and UL 486B.
3.3 FIELD QUALITY CONTROL
A. Perform the following field quality-control tests and inspections and prepare test reports:
1. After installing packaged outdoor HVAC equipment and after electrical circuitry has
been energized,test units for compliance with requirements.
2. Inspect for and remove shipping bolts,blocks,and tie-down straps.
3. Operational Test: After electrical circuitry has been energized, start units to confirm
proper motor rotation and unit operation.
4. Test and adjust controls and safeties. Replace damaged and malfunctioning controls and
equipment.
B. Remove malfunctioning units,replace with new units,and retest as specified above.
3.4 STARTUP SERVICE
A. Engage a factory-authorized service representative,provided by equipment supplier,to perform
startup service. Contractor to schedule start-up following completion of RTU installation.
3.5 ADJUSTING
A. Adjust initial temperature and humidity set points.
B. Set field-adjustable switches and circuit-breaker trip ranges as indicated.
END OF SECTION 237400
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SECTION 237433 -DEDICATED OUTDOOR-AIR UNITS
PART 1 -GENERAL
1.1 SUMMARY
A. Section includes factory-packaged units capable of supplying up to 100 percent outdoor air and
providing heating only and cooling and heating.
1.2 SUBMITTALS
A. Product Data: For each type of product.
B. Shop Drawings: Include plans,elevations,sections,and attachment details.
C. Startup service reports.
D. Sample warranty.
1.3 CLOSEOUT SUBMITTALS
A. Operation and maintenance data.
1.4 WARRANTY
A. Special Warranty: Manufacturer agrees to replace components of units that fail in materials or
workmanship within specified warranty period.
1. Warranty Period for Compressors: Five years from date of Substantial Completion.
2. Warranty Period for Heat Exchangers: Five years from date of Substantial Completion.
PART 2- PRODUCTS
2.1 MANUFACTURERS
A. Manufacturers: Subject to compliance with requirements. Units supplying cooking hoods shall
match its manufacturer shall match that of the cooking hood manufacturer selected. Provide
product by one of the following for the sales floor unit:
1. AAON.
2. Addison.
3. Captive-Aire Systems.
4. Desert Aire.
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5. Engineered Air.
6. Greenheck.
7. LCSystems.
8. Munters Corporation,Dehumidification Division;Des Champs Products.
9. Thomas&Betts Corporation;Reznor HVAC Division.
10. Trane.
2.2 CABINET
A. Construction: double wall.
B. Exterior Casing Material:Galvanized steel with paint finish.
C. Interior Casing Material:Galvanized steel.
D. Lifting and Handling Provisions: Factory-installed shipping skids and lifting lugs.
E. Base Rails: Galvanized-steel rails for mounting on roof curb or pad as indicated.
F. Access for Inspection, Cleaning, and Maintenance: Comply with requirements in
ASHRAE 62.1.
1. Service Doors: Hinged access doors with gaskets. Material and construction of doors
shall match material and construction of cabinet in which doors are installed.
G. Cabinet Insulation:
1. Type:Fibrous-glass duct lining complying with ASTM C 1071,Type II.
2. Thickness: 1 inch.
3. Insulation Adhesive: Comply with ASTM C 916,Type I.
4. Mechanical Fasteners: Suitable for adhesive,mechanical,or welding attachment to casing
without damaging liner and without causing air leakage when applied as recommended
by manufacturer.
H. Surfaces in Contact with Airstream: Comply with requirements in ASHRAE 62.1 for resistance
to mold and erosion.
2.3 Curb Adapter (Provide if alternate manufacturer, than what is scheduled, is supplied): Steel
with corrosion-protection coating, gasketing, internally insulated, built to match both
manufacturers'specifications.
A. Forward-Curved Fan Type: Centrifugal;statically and dynamically balanced.
1. Fan Wheel Material:Galvanized steel,mounted on solid-steel shaft.
2. Bearings: Self-aligning, permanently lubricated ball bearings or pillow-block bearings
rated L50 for 200,000 hours and having external grease fittings.
B. Motors:
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1. Comply with NEMA designation, temperature rating, service factor, and efficiency
requirements for motors specified in Section 230513 "Common Motor Requirements for
HVAC Equipment."
2. Enclosure: Open dripproof.
3. Efficiency: Premium efficient.
C. Mounting: Fan wheel, motor, and drives shall be mounted to fan casing with restrained,
elastomeric or spring isolators.
2.4 COOLING COILS
A. Capacity Ratings: Comply with ASHRAE 33 and ARI 410.
B. Coil Casing Material: Manufacturer's standard material.
C. Tube Material: Copper.
D. Fin Material: Aluminum or copper.
E. Fin and Tube Joints: Mechanical bond.
F. Leak Test: Coils shall be leak tested with air underwater.
G. Refrigerant Coil Suction and Distributor Header Materials: Seamless copper tube with brazed
joints.
2.5 REFRIGERATION SYSTEM
A. Comply with requirements in ASHRAE 15,"Safety Standard for Refrigeration Systems."
B. Refrigerant Charge:Factory charged with refrigerant and filled with oil.
C. Compressors: Reciprocating or scroll compressors with integral vibration isolators, internal
overcurrent and overtemperature protection,internal pressure relief,and crankcase heater.
D. Refrigerant: R-410A.
1. Classified as Safety Group A 1 according to ASHRAE 34.
2. Provide unit with operating charge of refrigerant.
E. Refrigeration System Specialties:
1. Expansion valve with replaceable thermostatic element.
2. Refrigerant dryer.
3. High-pressure switch.
4. Low-pressure switch.
5. Thermostat for coil freeze-up protection during low ambient temperature operation or
loss of air.
6. Brass service valves installed in discharge and liquid lines.
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F. Capacity Control:
1. Hot-gas bypass refrigerant control for capacity control with continuous dehumidification
on a single compressor.
G. Refrigerant Condenser Coils:
1. Capacity Ratings: Complying with ASHRAE 33 and ARI 410 and coil bearing the ARI
label.
2. Tube Material: Copper.
3. Fin Material: Aluminum.
4. Fin and Tube Joint: Mechanical bond.
5. Leak Test: Coils shall be leak tested with air underwater.
6. Coating: Phenolic epoxy corrosion-protection coating after assembly.
H. Condenser Hot Gas Reheat coil:
1. Capacity Ratings: Complying with ASHRAE 33 and ARI 410 and coil bearing the ARI
label.
2. Tube Material: Copper.
3. Fin Material: Aluminum.
4. Fin and Tube Joint: Mechanical bond.
5. Leak Test: Coils shall be leak tested with air underwater.
6. Coating: Phenolic epoxy corrosion-protection coating after assembly.
Condenser Fan Assembly:
1. Fans: Direct-drive propeller type with statically and dynamically balanced fan blades.
2. Fan Motors:
a. Comply with NEMA designation,temperature rating,service factor,and efficiency
requirements for motors specified in Section 230513 "Common Motor
Requirements for HVAC Equipment."
b. Motor Enclosure: Totally enclosed non-ventilating (TENV) or totally enclosed air
over(TEAO)enclosure.
c. Motor Bearings: Permanently lubricated bearings.
d. Built-in overcurrent and thermal-overload protection.
e. Efficiency: Premium efficient.
3. Fan Safety Guards: Steel with corrosion-resistant coating.
J. Safety Controls:
1. Compressor motor and condenser coil fan motor low ambient lockout.
2. Overcurrent protection for compressor motor.
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2.6 DIRECT-FIRED GAS BURNER
A. Description: Factory assembled, piped, and wired; and complying with ANSI Z21.47, "Gas-
Fired Central Furnaces,"and with NFPA 54,"National Fuel Gas Code."
1. CSA Approval: Designed and certified by and bearing label of CSA.
2. Burners:Aluminized steel with stainless-steel inserts.
a. Gas Control Valve:Modulating.
b. Fuel:Natural gas.
c. Minimum Combustion Efficiency: 80 percent.
d. Ignition: Electronically controlled electric spark with flame sensor.
B. Safety Controls:
1. Vent Flow Verification:Flame rollout switch.
2. Control Transformer: 24-V ac.
3. High Limit:Thermal switch or fuse to stop burner.
4. Gas Train: Regulated, redundant, 24-V ac gas valve assembly containing pilot solenoid
valve, electronic-modulating temperature control valve, pilot filter, pressure regulator,
pilot shutoff,and manual shutoff all in one body.
5. Purge-period timer shall automatically delay burner ignition and bypass low-limit
control.
6. Gas Manifold: Safety switches and controls complying with ANSI standards.
7. Airflow Proving Switch: Differential pressure switch senses correct airflow before
energizing pilot.
8. Automatic-Reset, High-Limit Control Device: Stops burner and closes main gas valve if
high-limit temperature is exceeded.
9. Safety Lockout Switch: Locks out ignition sequence if burner fails to light after three
tries.Controls are reset manually by turning the unit off and on.
2.7 OUTDOOR-AIR INTAKE HOOD
A. Type: Manufacturer's standard hood or louver.
B. Materials:Match cabinet.
C. Bird Screen:Comply with requirements in ASHRAE 62.1.
D. Configuration:Designed to inhibit wind-driven rain and snow from entering unit.
2.8 FILTERS
A. Disposable Panel Filters:
1. Comply with NFPA 90A.
2. Factory-fabricated,viscous-coated,flat-panel type.
3. Thickness: 2 inches.
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4. Minimum Merv: 8,according to ASHRAE 52.2.
B. Mounting Frames:
1. Panel filters arranged for flat or angular orientation, with access doors on both sides of
unit.Filters shall be removable from one side or from access plenum.
2.9 CONTROLS
A. Control Wiring:Factory wire connection for controls'power supply.
B. Control Devices: Sensors, transmitters, relays, switches, detectors, operators, actuators, and
valves shall be manufacturer's standard items to accomplish indicated control functions.
C. Unit-Mounted Status Panel:
1. Cooling/Off/Heating Controls:Control operational mode.
2. Damper Position: Indicate position of outdoor-air dampers in terms of percentage of
outdoor air. -
3. Status Lights: -
a. Filter dirty.
b. Fan operating.
c. Cooling operating.
d. Heating operating.
e. Dehumidification operating.
D. Control Dampers:
1. Damper Location: Factory installed-inside unit for ease of blade axle and bushing service.
Arrange dampers located in a mixing box to achieve convergent airflow to minimize
stratification.
2. Damper Leakage: Comply with requirements in AMCA 500-D.Leakage shall not exceed
6.5 cfm per sq. ft. at a static-pressure differential of 4.0 inches water column when a
torque of 5 inch pounds per sq. ft.is applied to the damper jackshaft.
3. Damper Rating:Rated for close-off pressure equal to the fan shutoff pressure.
4. Damper Label: Bear the AMCA seal for both air leakage and performance.
5. Blade Configuration: Unless otherwise indicated, use parallel blade configuration for
two-position control and equipment isolation service and use modulating control when
mixing two airstreams.For other applications,use an opposed-blade configuration.
6. Damper Frame Material: Extruded aluminum,galvanized steel or stainless steel.
7. Blade Type: Single-thickness metal reinforced with multiple V-grooves or hollow-shaped
airfoil.
8. Blade Material:Extruded aluminum,galvanized steel or stainless steel.
9. Maximum Blade Width: 6 inches.
10. Maximum Blade Length:48 inches.
11. Blade Seals: Replaceable,continuous perimeter vinyl seals and jambs with stainless-steel
compression-type seals.
12. Bearings:Thrust bearings for vertical blade axles.
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E. Damper Operators:
1. Factory-installed electric operator for each damper assembly with one operator for each
damper assembly mounted to the damper frame.
2. Operator capable of shutoff against fan pressure and able to operate the damper with
sufficient reserve power to achieve smooth modulating action and proper speed of
response at the velocity and pressure conditions to which the damper is subjected.
3. Maximum Operating Time:Open or close damper 90 degrees in 60 seconds.
4. Adjustable Stops: For both maximum and minimum positions.
5. Position Indicator and Graduated Scale: Factory installed on each actuator with words
"OPEN"and"CLOSED,"or similar identification,at travel limits.
6. Spring-return operator to fail-safe;either closed or open as required by application.
7. Operator Type: Direct coupled, designed for minimum 60,000 full-stroke cycles at rated
torque.
8. Position feedback Signal: For remote monitoring of damper position.
9. Coupling: V-bolt and V-shaped,toothed cradle.
10. Circuitry: Electronic overload or digital rotation-sensing circuitry.
F. Refrigeration System Controls:
1. Unit-mounted enthalpy controller shall lock out refrigerant system when temperature is
less than 70 deg F.
G. Furnace Controls:
1. Factory-mounted sensor in supply outlet with sensor adjustment located in control panel
to modulate gas furnace burner to maintain space temperature.
2. Electromechanical or Electronic Burner Control: 20 to 100 percent modulation of the
firing rate; 10 to 100 percent with dual-furnace units.
H. PLC Temperature Control: Standalone control module for link between unit controls and DDC
temperature-control system. Control module shall be compatible with control system specified
in Section 230900"Instrumentation and Control for HVAC." Links shall include the following:
1. Start/stop interface relay, and relay to notify DDC temperature-control system alarm
condition.
2.10 ACCESSORIES
A. Duplex Receptacle: Factory mounted in unit, with 20 amp 120 V GFI duplex receptacles and
weatherproof cover.
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PART 3-EXECUTION
3.1 INSTALLATION
A. Comply with manufacturer's rigging and installation instructions for unloading units and
moving to final locations.
B. Roof Curb Adapter(Provide if alternate manufacturer, than specified, is supplied): Install curb
adapter on roof curb and secure per manufacturer's recommendations.
C. Comply with requirements for gas-fired furnace installation in NFPA 54, "National Fuel Gas
Code."
D. Install separate devices furnished by manufacturer and not factory installed.
E. Install new filters at completion of equipment installation and before testing, adjusting, and
balancing.
F. Install drain pipes from unit drain pans to sanitary drain.
1. Drain Piping: Drawn-temper copper water tubing complying with ASTM B 88, Type L,
with soldered joints.
2. Drain Piping: Schedule 40 PVC pipe complying with ASTM D 1785, with solvent-
welded fittings.
a. PVC solvent cement shall have a VOC content of 510 g/L or less when calculated
according to 40 CFR 59,Subpart D(EPA Method 24).
b. Adhesive primer shall have a VOC content of 550 g/L or less when calculated
according to 40 CFR 59,Subpart D(EPA Method 24).
c. Solvent cement and adhesive primer shall comply with the testing and product
requirements of the California Department of Health Services' "Standard Practice
for the Testing of Volatile Organic Emissions from Various Sources Using Small-
Scale Environmental Chambers."
3. Pipe Size: Same size as condensate drain pan connection.
3.2 CONNECTIONS
A. Where installing piping adjacent to units,allow space for service and maintenance.
B. Gas Piping Connections:
1. Comply with requirements in Section 231123"Facility Natural-Gas Piping."
2. Connect gas piping to furnace, full size of gas train inlet, and connect with union and
shutoff valve with sufficient clearance for burner removal and service.
3. Install AGA-approved flexible connectors.
C. Duct Connections:
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1. Comply with requirements in Section 233113"Metal Ducts."
2. Drawings indicate the general arrangement of ducts.
3. Connect ducts to units with flexible duct connectors. Comply with requirements for
flexible duct connectors in Section 233300"Air Duct Accessories."
D. Electrical Connections: Comply with requirements for power wiring, switches, and motor
controls in electrical Sections.
1. Install electrical devices furnished by unit manufacturer but not factory mounted.
3.3 STARTUP SERVICE
A. Perform startup service.
1. Complete installation and startup checks according to manufacturer's written instructions.
2. Inspect units for visible damage to furnace combustion chamber.
3. Perform the following operations for both minimum and maximum firing and adjust
burner for peak efficiency:
a. Measure gas pressure at manifold.
b. Measure combustion-air temperature at inlet to combustion chamber.
c. Measure flue-gas temperature at furnace discharge.
d. Perform flue-gas analysis.Measure and record flue-gas carbon dioxide and oxygen
concentration.
e. Measure supply-air temperature and volume when burner is at maximum firing
rate and when burner is off.Calculate useful heat to supply air.
4. Inspect units for visible damage to refrigerant compressor, condenser and evaporator
coils,and fans.
5.- Start refrigeration system when outdoor-air temperature is within normal operating limits
and measure and record the following:
a. Cooling coil leaving-air,dry-and wet-bulb temperatures.
b. Cooling coil entering-air,dry-and wet-bulb temperatures.
c. Condenser coil entering-air dry-bulb temperature.
d. Condenser coil leaving-air dry-bulb temperature.
6. Simulate maximum cooling demand and inspect the following:
a. Compressor refrigerant suction and hot-gas pressures.
— b. Short-circuiting of air through outside coil or from outside coil to outdoor-air
intake.
7. Inspect casing insulation for integrity,moisture content,and adhesion.
8. Verify that clearances have been provided for servicing.
9. Verify that controls are connected and operable.
10. Verify that filters are installed.
11. Clean coils and inspect for construction debris.
12. Clean furnace flue and inspect for construction debris.
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13. Inspect operation of power vents.
14. Purge gas line.
15. Inspect and adjust vibration isolators and seismic restraints.
16. Verify bearing lubrication.
17. Clean fans and inspect fan-wheel rotation for movement in correct direction without
vibration and binding.
18. Adjust fan belts to proper alignment and tension.
19. Start unit.
20. Inspect and record performance of interlocks and protective devices including response to
smoke detectors by fan controls and fire alarm.
21. Operate unit for run-in period.
22. Calibrate controls.
23. Adjust and inspect high-temperature limits.
24. Inspect outdoor-air dampers for proper stroke.
25. Verify operational sequence of controls.
26. Measure and record the following airflows.Plot fan volumes on fan curve.
a. Supply-air volume.
b. Outdoor-air flow.
B. After startup,change filters,verify bearing lubrication,and adjust belt tension.
C. Remove and replace components that do not properly operate and repeat startup procedures as
specified above.
D. Prepare written report of the results of startup services.
3.4 ADJUSTING
A. Adjust initial temperature and humidity set points.
B. Set field-adjustable switches and circuit-breaker trip ranges as indicated.
END OF SECTION 237433
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SECTION 238126-SPLIT-SYSTEM AIR-CONDITIONERS
PART 1 -GENERAL
1.1 RELATED DOCUMENTS
A. Drawings and general provisions of the Contract, including General and Supplementary
Conditions and Division 01 Specification Sections,apply to this Section.
1.2 SUMMARY
A. This Section includes split-system air-conditioning and heat pump units consisting of separate
evaporator-fan and compressor-condenser components. Units are designed for exposed or
concealed mounting,and may be connected to ducts.
1.3 SUBMITTALS
A. Product Data: Include rated capacities, furnished specialties, and accessories for each type of
product indicated.
B. Shop Drawings: Diagram power,signal,and control wiring.
C. Operation and Maintenance Data: For split-system air-conditioning units to include in
operation and maintenance manuals.
D. Warranty: Special warranty specified in this Section.
1.4 QUALITY ASSURANCE
A. Electrical Components, Devices, and Accessories: Listed and labeled as defined in NFPA 70,
Article 100, by a testing agency acceptable to authorities having jurisdiction, and marked for
intended use.
1.5 COORDINATION
A. Coordinate size and location of concrete bases for units. Cast anchor-bolt inserts into bases.
Concrete, reinforcement, and formwork are specified in Division 03 Section "Cast-in-Place
Concrete."
B. Coordinate size, location, and connection details with roof curbs, equipment supports, and roof
penetrations specified in Division 07 Section"Roof Accessories."
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1.6 WARRANTY
A. General Warranty: Special warranty specified in this Article shall not deprive Owner of other
rights Owner may have under other provisions of the Contract Documents and shall be in
addition to, and run concurrent with, other warranties made by Contractor under requirements
of the Contract Documents.
B. Special Warranty: Manufacturer's standard form in which manufacturer agrees to repair or
replace components of split-system air-conditioning units that fail in materials or workmanship
within specified warranty period.
1. Warranty Period-Compressors: Five years from date of Substantial Completion.
PART 2-PRODUCTS
2.1 MANUFACTURERS
A. Manufacturers: Subject to compliance with requirements, provide products by one of the
following:
1. Carrier Air Conditioning;Div.of Carrier Corporation.
2. Friedrich Air Conditioning Company.
3. Koldwave,Inc.
4. Lennox Industries Inc.
5. Mitsubishi Electronics America,Inc.;HVAC Division.
6. Trane Company(The); Unitary Products Group.
7. York International Corp.
2.2 WALL EVAPORATOR-FAN COMPONENTS
A. Cabinet: Enameled steel with removable panels on front and ends in color selected by
Architect,and discharge drain pans with drain connection.
B. Refrigerant Coil: Copper tube, with mechanically bonded aluminum fins, complying with
ARI 210/240,and with thermal-expansion valve.
C. Fan: Direct drive,centrifugal fan.
D. Fan Motors:
1. Special Motor Features: Multitapped, multispeed with internal thermal protection and
permanent lubrication.
E. Filters: Permanent,cleanable.
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2.3 AIR-COOLED,COMPRESSOR-CONDENSER COMPONENTS
A. Casing: Steel, finished with baked enamel with removable panels for access to controls, weep
holes for water drainage,and mounting holes in base. Provide brass service valves,fittings,and
gage ports on exterior of casing.
B. Compressor: Hermetically sealed with crankcase heater and mounted on vibration isolation.
Compressor motor shall have thermal- and current-sensitive overload devices, start capacitor,
relay,and contactor.
1. Compressor Type: Scroll.
2. Two-speed compressor motor with manual-reset high-pressure switch and automatic-
reset low-pressure switch.
C. Refrigerant Coil: Copper tube,with mechanically bonded aluminum fins, complying with ARI
210/240,and with liquid subcooler.
D. Heat Pump Components: Reversing valve and low-temperature air cut-off thermostat.
E. Fan: Aluminum-propeller type,directly connected to motor.
F. Motor: Permanently lubricated,with integral thermal-overload protection.
G. Low Ambient Kit: Permits operation down to 32 deg F.
H. Mounting Base: Polyethylene.
2.4 ACCESSORIES
A. Thermostat: Wireless infrared functioning to remotely control compressor and evaporator fan,
with the following features:
1. Compressor time delay.
2. 24-hour time control of system stop and start.
3. Liquid-crystal display indicating temperature, set-point temperature, time setting,
operating mode,and fan speed.
4. Fan-speed selection,including auto setting.
B. Automatic-reset timer to prevent rapid cycling of compressor.
C. Refrigerant Line Kits: Soft-annealed copper suction and liquid lines factory cleaned, dried,
pressurized,and sealed; factory-insulated suction line with flared fittings at both ends.
PART 3-EXECUTION
3.1 INSTALLATION
A. Install units level and plumb.
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B. Install evaporator-fan components using manufacturer's standard mounting devices securely
fastened to building structure.
C. Install roof-mounting compressor-condenser components on equipment supports specified in
Division 07 Section "Roof Accessories." Anchor units to supports with removable, cadmium-
plated fasteners.
D. Install and connect precharged refrigerant tubing to component's quick-connect fittings. Install
tubing to allow access to unit.
3.2 CONNECTIONS
A. Piping installation requirements are specified in other related Sections. Drawings indicate
general arrangement of piping,fittings,and specialties.
B. Install piping adjacent to unit to allow service and maintenance.
C. Unless otherwise indicated, connect piping with unions and shutoff valves to allow units to be
disconnected without draining piping. Refer to piping system Sections for specific valve and
specialty arrangements.
D. Ground equipment.
3.3 FIELD QUALITY CONTROL
A. Manufacturer's Field Service: Engage a factory-authorized service representative to inspect,
test,and adjust field-assembled components and equipment installation,including connections,
and to assist in field testing. Report results in writing.
END OF SECTION 238126
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SECTION 238315 -QUARTZ ELECTRIC INFRARED HEATERS
PART 1 -GENERAL
1.1 RELATED DOCUMENTS
A. Drawings and general provisions of the Contract, including General and Supplementary
Conditions and Division 01 Specification Sections,apply to this Section.
1.2 SUMMARY
A. This Section includes suspended quartz electric infrared heaters listed for totally exposed
(outdoor)and indoor spot heating applications.
1.3 SUBMITTALS
A. Product Data: Include rated capacities, operating characteristics, furnished specialties, and
accessories.
PART 2-PRODUCTS
2.1 QUARTZ ELECTRIC INFRARED HEATERS
A. Manufacturers:
1. Solaira,Inforesight Consumer Products, Inc.
B. Housing: 1.5 mm 6063 aircraft aluminum, epoxy powder coated listed for indoor and outdoor
use. Wall or ceiling hung.
C. Reflectors and End Caps: 0.8 mm anodized aluminum,99.9 percent reflectivity.
D. Elements: Quartz tubes. Tubular quartz with tungsten coil, glare reducing, thermal shock
resistant for outdoor use.
E. Electrical Enclosure: Waterproof attached to fixture.
PART 3-EXECUTION
3.1 INSTALLATION
A. Install infrared heaters level. Adjust horizontal tilt to center reflector pattern at work areas.
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3.2 FIELD QUALITY CONTROL
A. Perform the following field tests and inspections.
1. Operational Test: After electrical circuitry has been energized, start units to confirm
proper unit operation.
2. Operate electric heating elements through full range to verify proper operation and
electrical connections.
3. Test and adjust controls. Replace damaged and malfunctioning controls and equipment.
B. Remove and replace malfunctioning units and retest as specified above.
END OF SECTION 238315
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