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Mechanical Requirements
Description
Oregon Energy Efficiency Specialty Code
The following list provides more detailed descriptions of the requirements in Section 4 of the Mechanical Compliance
Certificate.
Requirements Specific To: FPT -1, 2, 3, 4 :
1. [503.2.6] Energy recovery ventilation systems. Individual fan systems that have both a design supply air capacity of 5,000 cfm (2.36
m3 /s) or greater and a minimum outside air supply of 70 percent or greater of the design supply air quantity shall have an energy
recovery system that provides a change in the enthalpy of the outdoor air supply of 50 percent or more of the difference between the
outdoor air and return air at design conditions. Provision shall be made to bypass or control the energy recovery system to permit
cooling with outdoor air where cooling with outdoor air is required. Where a single room or space is supplied by multiple units, the
aggregate supply (cfm) of those units shall be used in applying this requirement.
Exception(s):
- Where energy recovery systems are prohibited by the International Mechanical Code.
- Systems serving spaces that are not cooled and are heated to less than 60 °F (15.5 °C).
- Where more than 60 percent of the outdoor heating energy is provided from site- recovered or site solar energy.
- Type 1 kitchen exhaust hoods.
- Cooling systems in climates with a 1- percent cooling design wet -bulb temperature less than 64F (18C).
- Systems requiring dehumidification that employ series -style energy recovery coils wrapped around the cooling coil when the
evaporative coil is located upstream of the exhaust air stream.
- Systems exhausting toxic, flammable. paint exhaust, corrosive fumes, or dust.
- Laboratory fume hood systems that include at least one of the following features:
1) Variable- air - volume hood exhaust and room supply systems that reduce exhaust and makeup air volume to 50 percent or less
of design values during periods of reduced occupancy or system demand
or
2) Variable- air - volume hood exhaust and room supply systems that reduce exhaust and makeup air volume and /or incorporate a
heat recovery system to precondition makeup air from laboratory exhaust shall meet the following:
A + B *(E /M) = 50%
Where:
A = Percentage that the exhaust and makeup air flow rates will be reduced from design conditions.
B = Percentage sensible heat recovery effectiveness.•
E = Exhaust airflow rate through the heat recovery device at design conditions
M = Makeup air flow rate of the system at design conditions,
or
3) Direct makeup (auxiliary) air supply equal to at least 75 percent of the exhaust rate, heated no warmer than 2 °F (1.1°C) below
room setpoint, cooled to no cooler than 3 °F (1.7 °C) above room setpoint, no humidification added, and no simultaneous heating and
cooling used for dehumidification control.
Requirements Specific To: HWH -1 :
1. [504.2] Service water heating equipment meets minimum efficiency requirements. No efficiency requirements for water heater with
storage capacity less than 20 gallons.
2. [504.2] Service water - heating equipment performance efficiency. Water heating equipment efficiency shall be verified through data
furnished by the manufacturer or through certification under an approved certification program.
3. [504.3] Temperature controls. Service water - heating equipment shall be provided with controls to allow a setpoint of 110 °F (43 °C) for
equipment serving dwelling units and 90 °F (32 °C) for equipment serving other occupancies. The outlet temperature of lavatories in
public facility rest rooms shall be limited to 110 °F (43 ° C).
4. [504.4] Heat traps. Water- heating equipment not supplied with integral heat traps and serving noncirculating systems shall be provided
with heat traps on the supply and discharge piping associated with the equipment.
5. [504.5] Pipe Insulation. For automatic - circulating hot water and externally heated (such as heat trace or impedance heating) systems,
piping shall be insulated with 1 inch (25 mm) of insulation having a conductivity not exceeding 0.27 Btu per inch /h ft2 x °F (1.53 W per
25 mm /m2 x K). The first 8 feet (2438 mm) of piping in noncirculating systems served by equipment without integral heat traps shall be
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• insulated with 0.5 inch (12.7 mm) of material having a conductivity not exceeding 0 27 Btu per inch /h x ft2 x'F (1.53 W per 25 mm /m2
x K).
6 [504.6] Hot Water System Controls. Systems designed to maintain usage temperatures in hot water pipes such as hot water
recirculating systems or heat trace, shall be turned off automatically when the hot water system is not in operational and shall have
demand sensing controls (flow switch in cold water make -up pipe, return water aquastat temperature sensor) that turn off the system
when there is no demand when the system is operational. A check valve or similar device shall be located between the circulator pump
and the water heating equipment to prevent water from flowing backwards though the recirculation loop.
Exception(s):
- Where public health standards require 24 hours per day operation of pumps for uses such as swimming pools, spas and hospitals.
- Service water heating systems used to provide multiple functions (e.g., space heating and DHW) as part of an integrated system.
- Where coupled with water heating capacity less than 100 kBtu /h (29 kW).
Generic Requirements: Must be met by all systems to which the requirement is applicable:
1. [503.2.1] Calculation of heating and cooling loads. Design loads shall be determined in accordance with the procedures described in
the ASHRAE /ACCA Standard 183. Heating and cooling loads shall be adjusted to account for load reductions that are achieved when
energy recovery systems are utilized in the HVAC system in accordance with the ASHRAE HVAC Systems and Equipment Handbook.
Alternatively, design loads shall be determined by an approved equivalent computation procedure.
2. [503.2.1.1] Packaged Electric Equipment. Forced air unit or packaged electric equipment with a total heating capacity greater than
20,000 Btu /h has a heat pump as the primary heating source.
Exception(s):
- Unstaffed equipment shelters or cabinets used solely for personal wireless service facilities.
- Requirement is not applicable.
3. [503.2.2] Equipment and system sizing. Heating and cooling equipment and systems capacity shall not exceed the loads calculated
•
in accordance with Section 503.2 1. A single piece of equipment providing both heating and cooling must satisfy this provision for one
function with the capacity for the other function as small as possible, within available equipment options.
Exception(s):
- Required standby equipment and systems provided with controls and devices that allow such systems or equipment to operate
automatically only when the primary equipment is not operating.
- Multiple units of the same equipment type with combined capacities exceeding the design load and provided with controls that have
the capability to sequence the operation of each unit based on load.
4. [503.2.3] HVAC Equipment Performance Requirements. Reported efficiencies must be tested and rated in accordance with the
applicable test procedure. The efficiency shall be verified through certification under an approved certification program or, if no
certification program exists, the equipment efficiency ratings shall be supported by data furnished by the manufacturer. Where multiple
rating conditions or performance requirements are provided, the equipment shall satisfy all stated requirements. Where components,
such as indoor or outdoor coils, from different manufacturers are used, calculations and supporting data shall be furnished by the
designer that demonstrates that the combined efficiency of the specified components meets the requirements herein.
5. [503.2.4.1] Thermostatic Controls. The supply of heating and cooling energy to each zone shall be controlled by individual thermostatic
controls that respond to temperature within the zone.
6. [503.2.4.2] Set point overlap restriction. Where used to control both heating and cooling, zone thermostatic controls shall provide a
temperature range or deadband of at least 5 °F (2.8 °C) within which the supply of heating and cooling energy to the zone is capable of
being shut off or reduced to a minimum.
Exception(s):
- Thermostats requiring manual change over between heating and cooling modes.
7. [503.2 4.3] Optimum Start Controls. Each HVAC system shall have controls that vary the start -up time of the system to just meet the
temperature set point at time of occupancy.
8. [503.2.4.4] Off -hour controls. Each zone shall be provided with thermostatic setback controls that are controlled by either an automatic
time clock or programmable control system. Thermostatic setback controls shall have the capability to set back or temporarily operate
the system to maintain zone temperatures down to 55 °F (13 °C) or up to 85 °F (29 °C). Automatic time clock or programmable controls
shall be capable of starting and stopping the system for seven different daily schedules per week and retaining their programming and
time setting during a loss of power for at least 10 hours. Additionally, the controls shall have a manual override that allows temporary
operation of the system for up to 2 hours; a manually operated timer capable of being adjusted to operate the system for up to 2 hours;
or an occupancy sensor.
Exception(s): - -
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• - Zones that will be operated continuously.
- Zones with a full HVAC load demand not exceeding 6,800 Btu /h (2 kW) and having a readily accessible manual shutoff switch.
9. [503.2.4.5] Shutoff damper controls. Both outdoor air supply and exhaust shall be equipped with not less than Class I motorized
dampers with a maximum leakage rate of 4 cfm per square foot (6.8 L/s - C m2) at 1.0 inch water gauge (w.g.) (1250 Pa) when tested
in accordance with AMCA 500D, that will automatically shut when the systems or spaces served are not in use.
Exception(s):
- Gravity dampers shall be permitted for outside air intake or exhaust airflows of 300 cfm (0.14 m3 /s) or less.
10. [503.2.4.6] Freeze Protection and Snow melt system controls Freeze protection systems, such as heat tracing of outdoor piping and
heat exchangers, including self - regulating heat tracing, shall include automatic controls capable of shutting off the systems when
outdoor air temperatures are above 40F or when the conditions of the protected fluid will prevent freezing. Snow- and ice - melting
systems, supplied through energy service to the building, shall include automatic controls capable of shutting off the system when the
pavement temperature is above 50F (10C) and no precipitation is falling and an automatic or manual control that will allow shutoff when
the outdoor temperature is above 40F (4C) so that the potential for snow or ice accumulation is negligible.
11. [503.2.4.8] Separate air distribution systems. Zones with special process temperature requirements and /or humidity requirements
shall be served by separate air distribution systems from those serving zones requiring only comfort conditions, or shall include
supplementary control provisions so that the primary systems may be specifically controlled for comfort purposes only.
Exception(s):
- Zones requiring only comfort heating or comfort cooling that are served by a system primarily used for process temperature and
humidity control provided that:
1) The total supply air to those comfort zones is no more than 25 percent of the total system supply air,
or
2) The total conditioned floor area of the zones is less than 1,000 square feet (90 m2)
12. [503.2.4.9] Humidity control. If a system is equipped with a means to add or remove moisture to maintain specific humidity levels in a
zone or zones, a humidity control device shall be provided.
13. [503.2.4.9.1] Humidity control. Where a humidity control device exists it shall be set to prevent the use of fossil fuel or electricity to
produce relative humidity in excess of 30 percent. Where a humidity control device is used for dehumidification, it shall be set to
prevent the use of fossil fuel or electricity to reduce relative humidity below 60 percent.
Exception(s):
- Hospitals, process needs. archives, museums, critical equipment. and other non - comfort situations with specific humidity
requirements outside this range.
14. [503.2.4.9.2] Humidity control. Where a humidity control device exists it shall be set to maintain a deadband of at least 10% relative
humidity where no active humidification or dehumidification takes place.
Exception(s):
- Heating for dehumidification is provided with heat recovery or heat pumping and the mechanical cooling system efficiency is 10
percent higher than required in section 503.2.3, HVAC equipment performance requirements.
15. [503.2.5] Ventilation. Ventilation, either natural or mechanical, shall be provided in accordance with Chapter 4 of the International
Mechanical Code. Where mechanical ventilation is provided, the system shall provide the capability to reduce the outdoor air supply to
the minimum required by Chapter 4 of the International Mechanical Code.
16. [503.2.5.1] Demand controlled ventilation (DCV). DCV is required for spaces larger than 500 ft2 for simple systems and spaces
larger than 150 ft2 for multiple zone systems and with an average occupant load of 25 people or more per 1000 ft2 of floor area (as
established in Table 403.3 of the International Mechanical Code) and served by systems with one or more of the following:
1. An air -side economizer;
2. Automatic modulating control of the outdoor air damper; or
3. A design outdoor airflow greater than 3,000 cfm.
Exception(s):
- Systems with energy recovery complying with Section 503.2.6
- Spaces less than 750 ft2 (69.7 m2) where an occupancy sensor turns the fan off, closes the ventilation damper. or closes the zone
damper when the space is unoccupied.
17. [503.2.5.2] Kitchen hoods. Kitchen makeup air shall be provided as required by the Oregon Mechanical Specialty Code. For each
kitchen with a total exhaust capacity greater than 5,000 cfm (2360 L /s), 50 percent of the required makeup air shall be (a) unheated or
heated to no more than 60 °F (15.55 °C); and (b) uncooled or evaporatively cooled. Each kitchen with a total exhaust capacity greater
than 5,000 cfm shall be equipped with a demand ventilation system on at least 75 percent of the exhaust and makeup air. Such
systems shall be equipped with automatic controls that reduce airflow in response to cooking appliance operation.
Exception(s):
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- Where hoods are used to exhaust ventilation air that would otherwise be exhausted by other fan systems. Air transferred from
spaces served by other fan systems may not be used if those systems are required to meet either Sections 503.2.5.1 or 503.2.6.
Occupancy schedule of HVAC system supplying transfer air shall be similar to kitchen exhaust hood operating schedule.
- Kitchen exhaust systems that include exhaust air energy recovery complying with section 503.2.6.
18. [503.2.5.3] Enclosed parking garage ventilation controls. In Group S -2, enclosed parking garages used for storing or handling
automobiles operating under their own power having ventilation exhaust rates 30,000 cfm and greater shall employ automatic carbon
monoxide sensing devices. These devices shall modulate the ventilation system to maintain a maximum average concentration of
carbon monoxide of 50 parts per million during any 8 -hour period, with a maximum concentration not greater than 200 parts per million
for a period not exceeding 1 hour. The system shall be capable of producing a ventilation rate of 1.5 cfm per square foot (0.0076 m3 /s -
m2) of floor area. Failure of such devices shall cause the exhaust fans to operate in the ON position.
19. [503.2.7] Duct and plenum insulation and sealing. All supply and return air ducts and plenums shall be insulated with a minimum of R -5
insulation when located in unconditioned spaces and a minimum of R -8 insulation when located outside the building. When located
within a building envelope assembly, the duct or plenum shall be separated from the building exterior or unconditioned or exempt
spaces by a minimum of R -8 insulation. All ducts, air handlers and filter boxes shall be sealed. Joints and seams shall comply with
Section 603.9 of the International Mechanical Code.
Exception(s):
- When located within equipment.
- When the design temperature difference between the interior and exterior of the duct or plenum does not exceed 15 °F (8 °C).
20. [503.2.7 1.1] Low - pressure duct systems. All longitudinal and transverse joints, seams and connections of supply and return ducts
operating at a static pressure less than or equal to 2 inches w.g. (500 Pa) shall be securely fastened and sealed with welds, gaskets,
mastics (adhesives), mastic -plus- embedded - fabric systems or tapes installed in accordance with the manufacturer's installation
instructions. Pressure classifications specific to the duct system shall be clearly indicated on the construction documents in accordance
with the International Mechanical Code. Documentation shall he furnished by the designer demonstrating that representative sections
totaling at least 25 percent of the duct area have been tested and that all tested sections meet the requirements of this section
Exception(s):
- Continuously welded and locking -type longitudinal joints and seams on ducts operating at static pressures less than 2 inches w.g.
(500 Pa) pressure classification.
•
21. [503.2.7 1.2] Medium- pressure duct systems. All ducts and plenums designed to operate at a static pressure greater than 2 inches
w.g. (500 Pa) but less than 3 inches w.g. (750 Pa) shall be insulated and sealed in accordance with Section 503 2.7 Pressure
classifications specific to the duct system shall be clearly indicated on the construction documents in accordance with the International
Mechanical Code. Documentation shall be furnished by the designer demonstrating that representative sections totaling at least 25
percent of the duct area have been tested and that all tested sections meet the requirements of this section.
22. [503.2.7.1.3] High - pressure duct systems. Ducts designed to operate at static pressures in excess of 3 inches w g. (746 Pa) shall be
insulated and sealed in accordance with Section 503.2.7. In addition, ducts and plenums shall be leak- tested in accordance with the
SMACNA HVAC Air Duct Leakage Test Manual with the rate of air leakage (CL) less than or equal to 6.0 as determined in accordance
with Equation 5 -2. Documentation shall be furnished by the designer demonstrating that representative sections totaling at least 25
percent of the duct area have been tested and that all tested sections meet the requirements of this section.
CL = F x P ^(0.65) (Equation 5 -2)
where:
F = The measured leakage rate in cfm per 100 square feet of duct surface.
P = The static pressure of the test.
23. [503.2.9.1] Air system balancing. Each supply air outlet and zone terminal device shall be equipped with means for air balancing in
accordance with the requirements of Chapter 6 of the International Mechanical Code (IMC 603.17). Discharge dampers intended to
modulate airflow are prohibited on constant volume fans and variable volume fans with motors 10 horsepower (hp) (7.5 kW) and larger.
24. [503.2.9.3] Manuals. The construction documents shall require that an operating and maintenance manual be provided to the building
owner by the mechanical contractor. The manual shall include, at least, the following:
1. Equipment capacity (input and output) and required maintenance actions.
2. Equipment operation and maintenance manuals.
3. HVAC system control maintenance and calibration information, including wiring diagrams, schematics. and control sequence
descriptions. Desired or field- determined setpoints shall be permanently recorded on control drawings, at control devices or, for digital
control systems, in programming comments.
4. A complete written narrative of how each system is intended to operate.
25. [503.2.10] Air System Design and Control. Each HVAC system having a total fan system motor nameplate horsepower (hp) exceeding
5 horsepower (hp) (3.7 kW) shall meet the provisions of Sections 503.2.10.1 through 503.2.10.2.
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•
26. [503.2.10.1] Allowable fan floor horsepower. Each HVAC system at fan system design conditions shall not exceed the allowable fan
system motor nameplate hp (Option 1) or fan system bhp (Option 2) as shown in Table 503.2.10.1(1). This includes supply fans, return/
relief fans, and fan - powered terminal units associated with systems providing heating or cooling capability.
Table 503.2.10.1(1)
Fan Power Limitation LIMIT CONSTANT VOLUME VARIABLE VOLUME
Option 1: Fan system motor nameplate hp Allowable nameplate motor hp hp < CFMS `0.0011 hp < CFMS *0.0015
Option 2. Fan system bhp Allowable fan system bhp bhp < CFMS *0.00094 + A bhp < CFMS *0.0013 +
A
where:
CFMS = The maximum design supply airflow rate to conditioned spaces served by the system in cubic feet per minute.
hp = The maximum combined motor nameplate horsepower.
Bhp = The maximum combined fan brake horsepower.
A = Sum of [PD x CFMD / 4131].
where:
PD = Each applicable pressure drop adjustment from Table 503.2.10.1(2) in. w.c.
Table 503.2.10.1(2)
Fan Power Limitation Pressure Drop Adjustment Credits:
Fully ducted return and /or exhaust air systems = 0.5 in w.c.
Return and /or exhaust airflow control devices = 0.5 in w.c
Exhaust filters, scrubbers or other exhaust treatment = pressure drop of device calculated at fan system design condition.
Particulate filtration credit: MERV 9 thru 12 = 0.5 in w.c.
Particulate filtration credit: MERV 13 thru 15 = 0.9 in w.c.
Particulate filtration credit: MERV 16 and greater and electronically
Enhanced filters = Pressure drop calculated at 2x clean filter pressure drop at fan system design condition.
Carbon and other gas -phase air cleaners = Clean filter pressure drop at fan system design condition.
Heat recovery device = Pressure drop of device at fan system design condition.
Evaporative humidifier /cooler in series with another cooling coil = Pressure drop of device at fan system design conditions
Sound attenuation section = 0.15 in w.c.
Exhaust system serving fume hoods = 0.35 in w.c.
Laboratory and vivarium exhaust systems in high -rise buildings = 0.25 in. w.c. /100 ft of vertical duct exceeding 75 feet
• Exception(s): •
- Hospital and laboratory systems that utilize flow control devices on exhaust and/or return to maintain space pressure relationships
necessary for occupant health and safety or environmental control shall be permitted to use variable volume fan power limitation.
- Individual exhaust fans with motor nameplate horsepower of 1 hp (0.7 kW) or less.
27. [503.2 10.21 Motor nameplate horsepower. For each fan, the selected fan motor shall be no larger than the first available motor size
greater than the brake horsepower (bhp). The fan brake horsepower (bhp) shall be indicated on the design documents to allow for
compliance verification by the code official.
Exception(s):
- For fans less than 6 bhp, where the first available motor larger than the brake horsepower has a nameplate rating within 50 percent
of the bhp, selection of the next larger nameplate motor size is allowed.
- For fans 6 bhp and larger, where the first available motor larger than the bhp has a nameplate rating within 30 percent of the bhp,
selection of the next larger nameplate motor size is allowed.
28. [503.2.10.3.1] Large Volume Fan Systems. Fan systems over 8,000 (7 m3 /s) cfm without direct expansion cooling coils that serve
single zones are required to reduce airflow based on space thermostat heating and cooling demand. A two -speed motor or variable
frequency drive shall reduce airflow to a maximum 60 percent of peak airflow or minimum ventilation air requirement as required by
Chapter 4 of the International Mechanical Code, whichever is greater.
Exception(s):
- Systems where the function of the supply air is for purposes other than temperature control, such as maintaining specific humidity
levels or supplying an exhaust system
29. All service water heating requirements are listed in requirements section specific to the system.
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1. ' I n t er i or Li h t in Compliance RECEIVED
I.' 14
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Certificate
DEC 7 2011
CITY OF TIGARD
Oregon Energy Efficiency Specialty Code BUILDING DIVISION
Section 1: Project Information
Project Type: Addition
Project Title : Jos. A. Bank
Construction Site: Owner /Agent: Designer /Contractor:
9611 SW Washington Square Rd , Suite L03 Gregory R Schnackel P E
Tigard, OR 97223 Schnackel Engineers. Inc
3035 South 72nd Street
Omaha, NE 68124
402 391 7680
Section 2: Interior Lighting and Power Calculation
A B C D
Area Category Floor Area Allowed Allowed Watts
(ft2) Watts / ft2 (B x C)
Retail:Sales Area (Ceiling Height 11 ft) • . 4324 1.5 6486
Allowance Furniture. clothing, cosmetics highlighting / Fix ID A 1058(a) 1 4 1480(b)
Allowance. Furniture, clothing, cosmetics highlighting / Fix. ID. Al 150(a) 1 4 210(b)
Allowance Furniture, clothing, cosmetics highlighting / Fix ID B 1249(a) 1 4 1749(b)
Allowance: Furniture, clothing, cosmetics highlighting / Fix ID BNL 66(a) 1 4 92(b)
Allowance: Furniture, clothing, cosmetics highlighting / Fix ID C 215(a) 1 4 300(b)
Allowance: Furniture. clothing, cosmetics highlighting / Fix ID: E 285(a) 1 4 399(b)
Allowance. Furniture, clothing, cosmetics highlighting! Fix. ID: T 400(a) 1.4 560(b)
Allowance: Furniture, clothing, cosmetics highlighting / Fix ID: X (E) 322(a) 1.4 451(b)
Allowance. Furniture, clothing, cosmetics highlighting / Fix. ID: Track 429(a) 1 4 600(b)
Common Space Types:Workshop (Ceiling Height 10 ft) 669 1 64 1097
Common Space Types:Restrooms (Ceiling Height 8 ft) 64 0.82 52
Total Allowed Watts = 13476
(a) Area claimed must not exceed the illuminated area permitted for this allowance type
(b) Allowance is (B x C) or the actual wattage of the fixtures given in Section 2, whichever is less
(e) Additional controls /switching allowances are based on number of fixtures or wattage controlled, not floor area of allowance
Section 3: Interior Lighting Fixture Schedule
A B C D E
Fixture ID : Description / Lamp / Wattage Per Lamp I Ballast Lamps/ # of Fixture (C X D) i
Fixture Fixtures Watt.
Retail:Sales Area (4324 sq ft )
Compact Fluorescent A. 4' Wall Wash / BIAX 40W / Electronic 2 20 74 1480
Compact Fluorescent: Al: 2' Wall Wash / BIA 1 5 42 210
Compact Fluorescent: B. Downlight / Tnple 4- pin42V.','Electronic 2 27 92 2484
Compact Fluorescent: B: Downlight / Triple 4 -pin 421/ ! Electronic 2 1 92 Exempt
Exemption Retail Display Window
Compact Fluorescent: BNL: Downlight / Triple 4 -pin 42W / Electronic 2 4 92 368
Compact Fluorescent: BNL' Downlight! Triple 4 -pin 42W / Electronic 2 1 92 Exempt
Exemption Retail Display Window
Incandescent C. Adj. Downlight / Incandescent 50W 1 6 50 300
Incandescent C. Adj. Downlight / Incandescent 50W 1 3 50 Exempt
.Exemption Retail Display Window
4 Incandescent E Pendant / Incandescent 100W 1 4 100 400
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Linear Fluorescent L Wall Sconce / 24" T8 17W / Electronic 2 4 33 132
Compact Fluorescent Q: 2'x2' Troffer / BIAX 40W / Electronic 3 27 108 2916
Compact Fluorescent. QNL. 2'x2' Troffer / BIAX 40W / Electronic 3 9 108 972
LED: T 12" LED at 4 5W / Other 1 112 5 560
Incandescent: X. Downlight / Other 1 3 90 270
Incandescent: X (E): Existing Downlight / Other 1 12 90 1080
Incandescent: X (E) (R)• Existing Downlight / Other 1 4 90 360
Track Track Wattage based on 12.0 feet of track 0 0 0 600
[ Common Space Types (669 sq.ft )
Linear Fluorescent. G 2'x4' Troffer! 48" T8 32W / Electronic 3 8 90 720
Linear Fluorescent GNL. 2'x4' Troffer / 48" T8 32W / Electronic 3 4 90 360
Linear Fluorescent. S. 4' Strip Light / 48" T8 32W ! Electronic 1 4 32 128
Common Space Types Restrooms (64 sq ft.)
Linear Fluorescent G 2'x4' Troffer / 48" T8 32W / Electronic 3 1 90 90
Total Proposed Watts = 13430
Section 4: Requirements Checklist
In the following requirements, the relevant code section reference is shown in (J ' +' denotes that more details exist in the specified code
section Checkboxes identify requirements that the applicant has not acknowledged as being met Check marked requirements identify those
the applicant acknowledges are met or excepted from compliance. 'Plans reference page /section' identifies where in the plans /specs the
requirement can be verified as being satisfied.
Lighting Wattage:
• 1 [505 1 +] Total proposed watts must be less than or equal to total allowed watts
Allowed Wattage 13476 Proposed Wattage 13430
Complies. YES
Mandatory Requirements:
• 2 [505 4] Exit signs Internally illuminated exit signs shall not exceed 5 watts per side
Plans reference page /section E -120
• 3 [505 2.2 3 +] Daylight zone control All daylight zones are provided with individual controls that control the lights independent of general
area lighting in the non - daylight zone In all individual daylight zones larger than 350 sq ft , automatic daylight controls is provided.
Automatic daylight sensing controls reduce the light output of the controlled luminaires at least 50 percent, and provide an automatic
OFF control, while maintaining a uniform level of illumination. Contiguous daylight zones adjacent to vertical fenestration may be
controlled by a single controlling device provided that they do not include zones facing more than two adjacent cardinal orientations
(i e., north, east, south, west) Daylight zones under skylights shall be controlled separately from daylight zones adjacent to vertical
fenestration
Plans reference page /section E -120
• 4 [505 2 1 +] Interior lighting controls At least one local shutoff lighting control has been provided for every 2,000 square feet of lit floor
area and each area enclosed by walls or floor -to- ceiling partitions The required controls are located within the area served by the
controls or are a remote switch that identifies the lights served and indicates their status
Plans reference page /section EMS -110
0 5 [505 2.3 +] Sleeping unit controls Master switch at entry to hotel /motel guest room
Plans reference page /section: NA.
• 6 [505 2 1 1] Egress lighting Egress illumination is controlled by a combination of listed emergency relay and occupancy sensors to shut
off during periods that the building space served by the means of egress is unoccupied
Plans reference page /section E -120
• 7 [505 2 2 +] Additional controls Each area that is required to have a manual control shall have additional controls that meet the
requirements of Sections 505.2 2 1 and 5052;f 2.
Plans reference page /section: EMS_110,_E = 120
• 8. [505 2 2 1 +] Light reduction controls Each space required to have a manual control also allows for reducing the connected lighting load
by at least 50 percent by either
1) controlling (dimming or multi -level switching) all luminaires, or
2) dual switching of alternate rows of luminaires, altemate luminaires, or alternate lamps, or
3) switching the middle lamp luminaires independently of other lamps; or
4) switching each luminaire or each lamp
Plans reference page /section. EMS -110
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• 9. [505 2 2 2] Buildings larger than 2,000 square feet are equipped with an automatic control device to shut off lighting in those areas This
automatic control device shall function on either
1) a scheduled basis, using time -of -day, with an independent program schedule that controls the interior lighting in areas that do not
exceed 10,000 square feet and are not more than one floor, or
2) an occupant sensor that shall turn lighting off within 30 minutes of an occupant leaving a space. or
3) a signal from another control or alarm system that indicates the area is unoccupied.
Plans reference page /section. EMS -110
D 10.[505.2.2] Occupancy sensors in rooms that include daylight zones are required to have Manual ON activation
Plans reference page /section NA.
• 11.[505.2 2] An occupant sensor control device is installed that automatically turns lighting off within 30 minutes of all occupants leaving a
space.
Plans reference page /section: EMS -110
• 12.[505 2 2] Additional controls An occupant sensor control device that automatically tums lighting off within 30 minutes of all occupants
leaving a space or a locally activated switch that automatically turns lighting off within 30 minutes of being activated is installed in all
storage and supply rooms up to 1000 square feet
Plans reference page /section NA.
• 13.[505 2.2 2 1] Occupant override Automatic lighting shutoff operating on a time -of -day scheduled basis incorporates an override
switching device that 1) is readily accessible, 2) is located so that a person using the device can see the lights or the area controlled
by that switch, or so that the area being lit is annunciated, 3) is manually operated, 4) allows the lighting to remain on for no more than
2 hours when an override is initiated, and 5) controls an area not exceeding 2,000 square feet.
Plans reference page /section• EMS -110
• 14.[505 2 2 2 2] Holiday scheduling Automatic lighting shutoff operating on a time -of -day scheduled basis has an automatic holiday
scheduling feature that turns off all loads for at least 24 hours, then resumes the normally scheduled operation
Plans reference page /section EMS -110
D 15 [505 2 4 +] Exterior lighting controls. Lighting not designated for dusk -to -dawn operation shall be controlled by either a combination of a
photosensor and a time switch, or an astronomical time switch Lighting designated for dusk -to -dawn operation shall be controlled by
an astronomical time switch or photosensor
Plans reference page /section NA _
• 16 [505 3] Tandem wiring The following luminaires located within the same area shall be tandem wired
1 Fluorescent luminaires equipped with one, three or odd- numbered lamp configurations, that are recess - mounted within 10 feet
center -to- center of each other
2 Fluorescent luminaires equipped with one, three or any odd - numbered lamp configuration, that are pendant- or surface- mounted
within 1 foot edge- to -edge of each other.
Plans reference page/section NA.
❑ 17 [505 5.1 +] Medical task lighting or art/history display lighting claimed to be exempt from compliance has a control device independent
of the control of the nonexempt lighting
Plans reference page /section: NA.
Cl 18 [505 7 +] Each dwelling unit in a building is metered separately
Plans reference page /section NA
Interior ] PASSES: Desi. n 0:3% • - s = f •'• . . •
Section 5: Compliance Statement
Compliance Statement The proposed lighting design',represented in this document is consistent with the building plans, specifications
and other calculations submitted with this permit application The proposed lighting system has been designed to meet the Oregon Energy
Efficiency Specialty Code requirements in COMcheck Version 3 9 0 and to comply with the mandatory requirements in the Requirements
Checklist
Gregory R. Schnackel P.E - President jk(i(k November 30, 2011
Name - Title Signature Date
Project Title. Jos. A Bank Report date 11/21/11
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COMcheck Software Version 3.9.0
. ' Mechan Comp Certificate
Oregon Energy Efficiency Specialty Code
Section 1: Project Information
Project Type: Addition
Project Title : Jos. A. Bank
Construction Site: Owner /Agent: Designer /Contractor:
9611 SW Washington Square Rd , Suite L03 Gregory R Schnackel P E.
Tigard, OR 97223 Schnackel Engineers, Inc
3035 South 72nd Street
Omaha, NE 68124
402 391 7680
Section 2: General Information
Building Location (for weather data). Tigard, Oregon
Climate Zone' 4c
Section 3: Mechanical Systems List
Quantity System Type & Description
4 FPT -1, 2, 3. 4 (Single Zone)
Heating 1 each - Duct Furnace, Electric, Capacity = 36 kBtu /h
1 HWH -1: Electric Storage Water Heater, Capacity. 6 gallons
Section 4: Requirements Checklist
In the following requirements. the relevant code section reference is shown in H. ' +' denotes that more details exist in the specified code
section Checkboxes identify requirements that the applicant has not acknowledged as being met. Check marked requirements identify those
the applicant acknowledges are met or excepted from compliance. 'Plans reference page /section' identifies where in the plans/specs the
requirement can be verified as being satisfied
Requirements Specific To: FPT -1, 2, 3, 4 :
I D 1 [503 2 6 +] Energy recovery ventilation systems Individual fan systems that have both a design supply air capacity of 5,000 cfm or
greater and a minimum outside air supply of 70 percent or greater of the design supply air quantity have an energy recovery system
Exception(s).
❑ Where energy recovery systems are prohibited by the International Mechanical Code
❑ Systems serving spaces that are not cooled and are heated to less than 60 °F
❑ Where more than 60 percent of the outdoor heating energy is provided from site - recovered or site solar energy
D Type 1 kitchen exhaust hoods
❑ Cooling systems in climates with a 1- percent cooling design wet -bulb temperature less than 64 °F (18 °C)
• Systems requiring dehumidification that employ series -style energy recovery coils wrapped around the cooling coil when the
evaporative coil is located upstream of the exhaust air stream.
• Systems exhausting toxic, flammable, paint exhaust, corrosive fumes, or dust.
D Laboratory fume hood systems that include qualifying features
Plans reference page /section NA LL Sy_stem to remain
Requirements Specific To: HWH -1 :
✓ 1. [504.2 +] Newly purchased equipment meets the efficiency requirements No efficiency requirements for water heater with storage
capacity less than 20 gallons
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• 2 [504.2] Service water - heating equipment performance efficiency. Water heating equipment efficiency has been verified through data
furnished by the manufacturer or through certification under an approved certification program.
✓ 3 [504 3] Temperature controls Service water- heating equipment have controls to allow a setpoint of 110 °F for equipment serving
dwelling units and 90`F for equipment serving other occupancies. The outlet temperature of lavatories in public facility rest rooms is
limited to 110 °F
Plans reference page /section: Wafer Heater Spec
v i 4 [504 4] Heat traps Water - heating equipment not supplied with integral heat traps and serving noncirculating systems have heat traps
on the supply and discharge piping associated with the equipment
Plans reference page /section:
• 5 [504 5 +] Pipe Insulation For automatic- circulating hot water and externally heated (such as heat trace or impedance heating) systems,
piping is insulated in accordance with the specifications of this section
t i 6. [504.6 +] Hot Water System Controls Systems designed to maintain usage temperatures in hot water pipes is turned off automatically
when the hot water system is not in operation and has demand sensing controls that turn off the system when there is no demand
when the system is operational. A check valve or similar device is installed per requirement details
Plans reference page /section. P -501
Generic Requirements: Must be met by all systems to which the requirement is applicable:
• 1. [503.2 1 +] Calculation of heating and cooling loads Design loads are determined in accordance with the procedures described in the
ASHRAE /ACCA Standard 183. Alternatively, design loads have been determined by an approved equivalent computation procedure
t i 2 [503 2.1 1 +] Packaged Electric Equipment Specified packaged electrical equipment has a heat pump as the primary heating source
Requirement is not applicable
Plans reference page /section: NA Fan Powered Termial Box on existing_LLSystem_
• 3 [503.2.2 +] Equipment and system sizing Heating and cooling equipment and systems capacity do not exceed the loads calculated in
accordance with Section 503 2 1
Plans reference page /section: M -501
• 4. [503 2 3 +] HVAC Equipment Performance Requirements Reported efficiencies have been tested and rated in accordance with the
applicable test procedure. The efficiency has been verified through certification under an approved certification program or, if no
certification program exists. the equipment efficiency ratings are supported by data furnished by the manufacturer
• 5 [503 2 4 1 +] Thermostatic Controls The supply of heating and cooling energy to each zone is controlled by individual thermostatic
controls that respond to temperature within the zone
Plans reference page /section. M -110
• 6. [503.2 4.2] Set point overlap restriction Where used to control both heating and cooling, zone thermostatic controls provide a
temperature range or deadband of at least 5 °F (2 8 °C) within which the supply of heating and cooling energy to the zone is capable of
being shut off or reduced to a minimum
Plans reference page /section M-1/0
• 7 [503 2 4.3] Optimum Start Controls. Each HVAC system has controls that vary the start-up time of the system to lust meet the
temperature set point at time of occupancy.
Plans reference page /section. M -110
• 8 [503 2 4.4 +] Off -hour controls. Each zone is provided with thermostatic setback controls that are controlled by either an automatic time
clock or programmable control system
Plans reference page /section M -110
9 [503.2 4 5 +] Shutoff damper controls. Both outdoor air supply and exhaust are equipped with not less than Class I motorized dampers.
Exception(s):
rl Gravity dampers shall be permitted for outside air intake or exhaust airflows of 300 cfm or less.
Plans reference page /section NA Fan Powered Termial Box on existing LL System
10. [503.2 4.6 +] Freeze Protection and Snow melt system controls. Freeze protection systems, such as heat tracing of outdoor piping and
heat exchangers, including self - regulating heat tracing, include automatic controls capable of shutting off the systems when outdoor air
temperatures meet code criteria
Plans reference page /section NA.
11 [503.2 4 8] Separate air distribution systems. Zones with special process temperature requirements and /or humidity requirements are
served by separate air distribution systems from those serving zones requiring only comfort conditions, or shall include supplementary
control provisions so that the primary systems may be specifically controlled for comfort purposes only
Exception(s):
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❑ [503 2 4 8 +] Zones requiring only comfort heating or comfort cooling that are served by a system primarily used for process
temperature and humidity control.
Plans reference page /section. NA.
O 12 [503.2 4.9] Humidity control. If a system is equipped with a means to add or remove moisture to maintain specific humidity levels in a
zone or zones, a humidity control device is provided.
Plans reference page /section NA .
• 0 13 [503.2 4 9 1] Humidity control Where a humidity control device exists it is set to prevent the use of fossil fuel or electricity to produce
relative humidity in excess of 30 percent Where a humidity control device is used for dehumidification, it is set to prevent the use of
fossil fuel or electricity to reduce relative humidity below 60 percent
Exception(s):
• Hospitals, process needs, archives, museums, critical equipment, and other non - comfort situations with specific humidity
requirements outside this range.
Plans reference page /section NA.
O 14 [503 2.4 9 2] Humidity control Where a humidity control device exists it is set to maintain a deadband of at least 10% relative humidity
where no active humidification or dehumidification takes place
Exception(s).
• Heating for dehumidification is provided with heat recovery or heat pumping and the mechanical cooling system efficiency is 10
percent higher than required in section 503 2 3, HVAC equipment performance requirements
Plans reference page /section Fresh air provided thru LL system
O 15 [503 2 5] Ventilation Ventilation, either natural or mechanical, is provided in accordance with Chapter 4 of the International Mechanical
Code Where mechanical ventilation is provided, the system has the capability to reduce the outdoor air supply to the minimum
required by Chapter 4 of the International Mechanical Code.
Plans reference page /section Fresh air provided thru LL system
iJ 16. [503 2.5 1 +] Demand controlled ventilation (DCV) DCV is required for spaces larger than 500 ft2 for simple systems and spaces larger
than 150 ft2 for multiple zone systems.
Exception(s).
❑ Systems with energy recovery complying with Section 503.2.6
• Spaces less than 750 ft2 (69.7 m2) where an occupancy sensor turns the fan off• closes the ventilation damper, or closes the
zone damper when the space is unoccupied
Plans reference page /section NA.
O 17 [503.2 5 2 +] Kitchen hoods Kitchen makeup is provided as required by the Oregon Mechanical Specialty Code
Exception(s)
• Where hoods are used to exhaust ventilation air that would otherwise be exhausted by other fan systems
• Kitchen exhaust systems that include exhaust air energy recovery complying with section 503 2 6
Plans reference page /section: NA.
O 18. [503.2.5.3 +] Enclosed parking garage ventilation controls In Group S -2. enclosed parking garages used for storing or handling
automobiles employs automatic carbon monoxide sensing devices
Plans reference page /section NA.
t i 19 [503 2.7 +] Duct and plenum insulation and sealing All supply and return air ducts and plenums are insulated with the specified
insulation. When located within a building envelope assembly, the duct or plenum is separated from the building extenor or
unconditioned or exempt spaces by a minimum of R -8 insulation All ducts, air handlers and filter boxes are sealed. Joints and seams
comply with Section 603.9 of the International Mechanical Code
✓ 20 [503.2.7 1 1 +] Low - pressure duct systems All longitudinal and transverse joints, seams and connections of low- pressure supply and
return ducts are securely fastened and sealed with welds, gaskets, mastics (adhesives), mastic -plus- embedded - fabric systems or
tapes installed in accordance with the manufacturer's installation instructions
Plans reference page /section. M -601 and M -602
• 21 [503.2 7 1 2 +] Medium- pressure duct systems. All ducts and plenums designed to operate medium - pressure are insulated and sealed
in accordance with Section 503 2 7 Pressure classifications specific to the duct system are clearly indicated on the construction
documents.
Plans reference page /section• NA
❑ 22. [503.2.7.1 3 +] High - pressure duct systems. Ducts designed to operate at high - pressure are insulated and sealed in accordance with
Section 503 2 7. In addition, ducts and plenums are leak- tested in accordance with the SMACNA HVAC Air Duct Leakage Test Manual.
Project Title. Jos. A Bank Report date. 11/21/11
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Plans reference page /section: NA
• 23. [503 2 9.1 +] Air system balancing Each supply air outlet and zone terminal device is equipped with means for air balancing in
accordance with the requirements of IMC 603.17 Discharge dampers intended to modulate airflow are prohibited on constant volume
fans and variable volume fans with motors 10 horsepower.
Plans reference page /section M -601 and M -602
✓ 24. [503.2.9.3 +] Manuals. The construction documents require that an operating and maintenance manual be provided to the building
owner by the mechanical contractor See long description for specifications
Plans reference page /section M -601 and M -602
• 25. [503.2.10 +] Air System Design and Control. Each HVAC system having a total fan system motor nameplate hp exceeding 5 hp meets
the provisions of Sections 503 2 10 1 through 503 2 10.2
Plans reference page /section NA
• 26 [503 2 10 1 +] Allowable fan floor horsepower Each HVAC system at fan system design conditions does not exceed the allowable fan
system motor nameplate hp (Option 1) or fan system bhp (Option 2) as shown and calulated in requirement details
• Exception applies: Individual exhaust fans with motor nameplate horsepower of 1 hp or less
Plans reference page /section
• 27 [503 2 10 2 +] Motor nameplate horsepower For each fan, the selected fan motor is no larger than the first available motor size greater
than the brake horsepower (bhp).
Plans reference page /section M -501
• 28 [503 2.10 3 1] Large Volume Fan Systems Fan systems over 8,000 (7 m3 /s) cfm without direct expansion cooling coils that serve
single zones reduce airflow based on space thermostat heating and cooling demand. A two -speed motor or variable frequency drive
reduces airflow to a maximum 60 percent of peak airflow or minimum ventilation air requirement as required by Chapter 4 of the
International Mechanical Code, whichever is greater.
Exception(s)
• Systems where the function of the supply air is for purposes other than temperature control, such as maintaining specific humidity
levels or supplying an exhaust system
Plans reference page /section NA
✓ 29 All service water heating requirements are listed in requirements section specific to the system
Section 5: Compliance Statement
Compliance Statement. The proposed mechanical design represented in this document is consistent with the building plans, specifications
and other calculations submitted with this permit application The proposed mechanical systems have been designed to meet the Oregon
Energy Efficiency Specialty Code requirements in COMcheck Version 3 9 0 and to comply with the mandatory requirements in the
Requirements Checklist
Gregory R. Schnackel P.E. - President ___&4(11U November 30, 2011
Name - Title Signature Date
Section 6: Post Construction Compliance Statement
• HVAC record drawings of the actual installation, system capacities, calibration information, and performance data for each equipment
provided to the owner
• HVAC O &M documents for all mechanical equipment and system provided to the owner by the mechanical contractor
• Written HVAC balancing and operations report provided to the owner
The above post construction requirements have been completed
Principal Mechanical Designer -Name Signature Date
Project Title Jos A. Bank Report date 11/21/11
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COMcheck Software Version 3.9.0
Mecha R e qu ir em e nts
Description
Oregon Energy Efficiency Specialty Code
The following list provides more detailed descriptions of the requirements in Section 4 of the Mechanical Compliance
Certificate
Requirements Specific To: FPT -1, 2, 3, 4 :
1 [503.2.6] Energy recovery ventilation systems Individual fan systems that have both a design supply air capacity of 5.000 cfm (2 36
m3 /s) or greater and a minimum outside air supply of 70 percent or greater of the design supply air quantity shall have an energy
recovery system that provides a change in the enthalpy of the outdoor air supply of 50 percent or more of the difference between the
outdoor air and return air at design conditions Provision shall be made to bypass or control the energy recovery system to permit
cooling with outdoor air where cooling with outdoor air is required Where a single room or space is supplied by multiple units, the
aggregate supply (cfm) of those units shall be used in applying this requirement
Exception(s).
- Where energy recovery systems are prohibited by the International Mechanical Code
- Systems serving spaces that are not cooled and are heated to less than 60 °F (15.5 °C)
- Where more than 60 percent of the outdoor heating energy is provided from site- recovered or site solar energy
- Type 1 kitchen exhaust hoods
- Cooling systems in climates with a 1- percent cooling design wet -bulb temperature less than 64F (18C).
- Systems requinng dehumidification that employ series -style energy recovery coils wrapped around the cooling coil when the
evaporative coil is located upstream of the exhaust air stream
- Systems exhausting toxic. flammable, paint exhaust, corrosive fumes, or dust
- Laboratory fume hood systems that include at least one of the following features
1) Variable -air- volume hood exhaust and room supply systems that reduce exhaust and makeup air volume to 50 percent or less
of design values during periods of reduced occupancy or system demand
or
2) Variable -air- volume hood exhaust and room supply systems that reduce exhaust and makeup air volume and /or incorporate a
heat recovery system to precondition makeup air from laboratory exhaust shall meet the following
A + B'(E /M) = 50%
Where
A = Percentage that the exhaust and makeup air flow rates will be reduced from design conditions
B = Percentage sensible heat recovery effectiveness
E = Exhaust airflow rate through the heat recovery device at design conditions
M = Makeup air flow rate of the system at design conditions.
or
3) Direct makeup (auxiliary) air supply equal to at least 75 percent of the exhaust rate, heated no warmer than 2 °F (1 1°C) below
room setpoint, cooled to no cooler than 3 °F (1.7 °C) above room setpoint, no humidification added, and no simultaneous heating and
cooling used for dehumidification control.
Requirements Specific To: HWH -1 :
1 [504 2] Service water heating equipment meets minimum efficiency requirements No efficiency requirements for water heater with
storage capacity less than 20 gallons
2 [504.2] Service water - heating equipment performance efficiency. Water heating equipment efficiency shall be verified through data
furnished by the manufacturer or through certification under an approved certification program.
3 [504 3] Temperature controls Service water - heating equipment shall be provided with controls to allow a setpoint of 110 °F (43 °C) for
equipment serving dwelling units and 90 °F (32 °C) for equipment serving other occupancies The outlet temperature of lavatories in
public facility rest rooms shall be limited to 110 °F (43 ° C)
4 [504 4] Heat traps Water - heating equipment not supplied with integral heat traps and serving noncirculating systems shall be provided
with heat traps on the supply and discharge piping associated with the equipment.
5 [504 5] Pipe Insulation For automatic - circulating hot water and externally heated (such as heat trace or impedance heating) systems,
piping shall be insulated with 1 inch (25 mm) of insulation having a conductivity not exceeding 0 27 Btu per inch /h ft2 x °F (1 53 W per
25 mm /m2 x K) The first 8 feet (2438 mm) of piping in noncirculating systems served by equipment without integral heat traps shall be
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, insulated with 0.5 inch (12 7 mm) of material having a conductivity not exceeding 0 27 Btu per inch /h x ft2 x °F (1.53 W per 25 mm /m2
x K).
6. [504 6] Hot Water System Controls. Systems designed to maintain usage temperatures in hot water pipes such as hot water
recirculating systems or heat trace, shall be turned off automatically when the hot water system is not in operational and shall have
demand sensing controls (flow switch in cold water make -up pipe, return water aquastat temperature sensor) that turn off the system
when there is no demand when the system is operational. A check valve or similar device shall be located between the circulator pump
and the water heating equipment to prevent water from flowing backwards though the recirculation loop
Exception(s)
- Where public health standards require 24 hours per day operation of pumps for uses such as swimming pools, spas and hospitals
- Service water heating systems used to provide multiple functions (e.g , space heating and DHW) as part of an integrated system.
- Where coupled with water heating capacity less than 100 kBtu /h (29 kW)
Generic Requirements: Must be met by all systems to which the requirement is applicable:
1 [503.2 1 ] Calculation of heating and cooling loads Design loads shall be determined in accordance with the procedures described in
the ASHRAE /ACCA Standard 183 Heating and cooling loads shall be adjusted to account for load reductions that are achieved when
energy recovery systems are utilized in the HVAC system in accordance with the ASHRAE HVAC Systems and Equipment Handbook
Alternatively, design loads shall be determined by an approved equivalent computation procedure
2 [503 2 1 1] Packaged Electric Equipment. Forced air unit or packaged electric equipment with a total heating capacity greater than
20,000 Btu /h has a heat pump as the primary heating source
Exception(s)
- Unstaffed equipment shelters or cabinets used solely for personal wireless service facilities
- Requirement is not applicable
3 [503 2 2] Equipment and system sizing. Heating and cooling equipment and systems capacity shall not exceed the loads calculated
in accordance with Section 503 2.1. A single piece of equipment providing both heating and cooling must satisfy this provision for one
function with the capacity for the other function as small as possible, within available equipment options
Exception(s).
- Required standby equipment and systems provided with controls and devices that allow such systems or equipment to operate
automatically only when the primary equipment is not operating
- Multiple units of the same equipment type with combined capacities exceeding the design load and provided with controls that have
the capability to sequence the operation of each unit based on load
4 [503 2 3] HVAC Equipment Performance Requirements. Reported efficiencies must be tested and rated in accordance with the
applicable test procedure The efficiency shall be verified through certification under an approved certification program or, if no
certification program exists, the equipment efficiency ratings shall be supported by data furnished by the manufacturer. Where multiple
rating conditions or performance requirements are provided, the equipment shall satisfy all stated requirements Where components,
such as indoor or outdoor coils, from different manufacturers are used, calculations and supporting data shall be furnished by the
designer that demonstrates that the combined efficiency of the specified components meets the requirements herein
5 [503.2.4 1] Thermostatic Controls. The supply of heating and cooling energy to each zone shall be controlled by individual thermostatic
controls that respond to temperature within the zone.
6. [503 2 4 2] Set point overlap restriction Where used to control both heating and cooling, zone thermostatic controls shall provide a
temperature range or deadband of at least 5 °F (2 8 °C) within which the supply of heating and cooling energy to the zone is capable of
being shut off or reduced to a minimum
Exception(s).
- Thermostats requiring manual change over between heating and cooling modes.
7 [503 2 4 3] Optimum Start Controls. Each HVAC system shall have controls that vary the start -up time of the system to just meet the
temperature set point at time of occupancy
8. [503.2 4.4] Off-hour controls Each zone shall be provided with thermostatic setback controls that are controlled by either an automatic
time clock or programmable control system Thermostatic setback controls shall have the capability to set back or temporanly operate
the system to maintain zone temperatures down to 55 °F (13 °C) or up to 85 °F (29 °C) Automatic time clock or programmable controls
shall be capable of starting and stopping the system for seven different daily schedules per week and retaining their programming and
time setting during a loss of power for at least 10 hours Additionally, the controls shall have a manual override that allows temporary
operation of the system for up to 2 hours; a manually operated timer capable of being adjusted to operate the system for up to 2 hours,
or an occupancy sensor
Exception(s)
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- Zones that will be operated continuously.
- Zones with a full HVAC load demand not exceeding 6,800 Btu /h (2 kW) and having a readily accessible manual shutoff switch
• 9. [503.2 4.5] Shutoff damper controls. Both outdoor air supply and exhaust shall be equipped with not less than Class I motorized
dampers with a maximum leakage rate of 4 cfm per square foot (6 8 L/s - C m2) at 1 0 inch water gauge (w g.) (1250 Pa) when tested
in accordance with AMCA 500D, that will automatically shut when the systems or spaces served are not in use
Exception(s).
- Gravity dampers shall be permitted for outside air intake or exhaust airflows of 300 cfm (0.14 m3 /s) or less
10. [503 2.4.6] Freeze Protection and Snow melt system controls. Freeze protection systems, such as heat tracing of outdoor piping and
heat exchangers, including self - regulating heat tracing, shall include automatic controls capable of shutting off the systems when
outdoor air temperatures are above 40F or when the conditions of the protected fluid will prevent freezing Snow- and ice- melting
systems, supplied through energy service to the building, shall include automatic controls capable of shutting off the system when the
pavement temperature is above 50F (10C) and no precipitation is falling and an automatic or manual control that will allow shutoff when
the outdoor temperature is above 40F (4C) so that the potential for snow or ice accumulation is negligible
11 [503 2.4 8] Separate air distribution systems Zones with special process temperature requirements and /or humidity requirements
shall be served by separate air distribution systems from those serving zones requiring only comfort conditions, or shall include
supplementary control provisions so that the primary systems may be specifically controlled for comfort purposes only
Exception(s)
- Zones requiring only comfort heating or comfort cooling that are served by a system primarily used for process temperature and
humidity control provided that
1) The total supply air to those comfort zones is no more than 25 percent of the total system supply air,
or
2) The total conditioned floor area of the zones is less than 1,000 square feet (90 m2)
12 [503 2 4 9] Humidity control If a system is equipped with a means to add or remove moisture to maintain specific humidity levels in a
zone or zones. a humidity control device shall be provided
13. [503 2 4 9 1] Humidity control. Where a humidity control device exists it shall be set to prevent the use of fossil fuel or electncity to
produce relative humidity in excess of 30 percent Where a humidity control device is used for dehumidification, it shall be set to
prevent the use of fossil fuel or electricity to reduce relative humidity below 60 percent
Exception(s).
- Hospitals, process needs. archives, museums, critical equipment, and other non - comfort situations with specific humidity
•
requirements outside this range
14. [503.2 4.9 2] Humidity control Where a humidity control device exists it shall be set to maintain a deadband of at least 10% relative
humidity where no active humidification or dehumidification takes place
Exception(s)
- Heating for dehumidification is provided with heat recovery or heat pumping and the mechanical cooling system efficiency is 10
percent higher than required in section 503.2.3, HVAC equipment performance requirements
15 [503.2 5] Ventilation Ventilation, either natural or mechanical, shall be provided in accordance with Chapter 4 of the International
Mechanical Code Where mechanical ventilation is provided, the system shall provide the capability to reduce the outdoor air supply to
the minimum required by Chapter 4 of the International Mechanical Code
16 [503.2.5.1] Demand controlled ventilation (DCV) DCV is required for spaces larger than 500 ft2 for simple systems and spaces
larger than 150 ft2 for multiple zone systems and with an average occupant load of 25 people or more per 1000 ft2 of floor area (as
established in Table 403 3 of the International Mechanical Code) and served by systems with one or more of the following
1 An air -side economizer,
2 Automatic modulating control of the outdoor air damper, or
3 A design outdoor airflow greater than 3,000 cfm
Exception(s)
- Systems with energy recovery complying with Section 503 2 6
- Spaces less than 750 ft2 (69 7 m2) where an occupancy sensor turns the fan off, closes the ventilation damper. or closes the zone
damper when the space is unoccupied.
17. [503 2 5 2] Kitchen hoods Kitchen makeup air shall be provided as required by the Oregon Mechanical Specialty Code For each
kitchen with a total exhaust capacity greater than 5.000 cfm (2360 L /s). 50 percent of the required makeup air shall be (a) unheated or
heated to no more than 60 °F (15 55 °C): and (b) uncooled or evaporatively cooled. Each kitchen with a total exhaust capacity greater
• than 5,000 cfm shall be equipped with a demand ventilation system on at least 75 percent of the exhaust and makeup air Such
systems shall be equipped with automatic controls that reduce airflow in response to cooking appliance operation
Exception(s)
Project Title Jos A Bank Report date. 11/21/11
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- Where hoods are used to exhaust ventilation air that would otherwise be exhausted by other fan systems Air transferred from
spaces served by other fan systems may not be used if those systems are required to meet either Sections 503 2 5 1 or 503.2 6.
Occupancy schedule of HVAC system supplying transfer air shall be similar to kitchen exhaust hood operating schedule
- Kitchen exhaust systems that include exhaust air energy recovery complying with section 503 2 6
18. [503 2.5 31 Enclosed parking garage ventilation controls In Group S -2, enclosed parking garages used for storing or handling
automobiles operating under their own power having ventilation exhaust rates 30,000 cfm and greater shall employ automatic carbon
monoxide sensing devices These devices shall modulate the ventilation system to maintain a maximum average concentration of
• carbon monoxide of 50 parts per million during any 8 -hour period, with a maximum concentration not greater than 200 parts per million
for a period not exceeding 1 hour The system shall be capable of producing a ventilation rate of 1 5 cfm per square foot (0 0076 m3 /s -
m2) of floor area Failure of such devices shall cause the exhaust fans to operate in the ON position
19. [503 2.7] Duct and plenum insulation and sealing All supply and return air ducts and plenums shall be insulated with a minimum of R -5
insulation when located in unconditioned spaces and a minimum of R -8 insulation when located outside the building. When located
within a building envelope assembly, the duct or plenum shall be separated from the building exterior or unconditioned or exempt
spaces by a minimum of R -8 insulation All ducts, air handlers and filter boxes shall be sealed Joints and seams shall comply with
Section 603 9 of the International Mechanical Code
Exception(s)
- When located within equipment
- When the design temperature difference between the interior and exterior of the duct or plenum does not exceed 15 °F (8 °C)
20. [503.2 7 1 1] Low - pressure duct systems. All longitudinal and transverse joints, seams and connections of supply and return ducts
operating at a static pressure less than or equal to 2 inches w g. (500 Pa) shall be securely fastened and sealed with welds, gaskets,
mastics (adhesives), mastic -plus- embedded - fabric systems or tapes installed in accordance with the manufacturer's installation
instructions Pressure classifications specific to the duct system shall be clearly indicated on the construction documents in accordance
with the International Mechanical Code Documentation shall be furnished by the designer demonstrating that representative sections
totaling at least 25 percent of the duct area have been tested and that all tested sections meet the requirements of this section
Exception(s)
- Continuously welded and locking -type longitudinal joints and seams on ducts operating at static pressures less than 2 inches w g
(500 Pa) pressure classification
21 [503 2 7 1 2] Medium- pressure duct systems All ducts and plenums designed to operate at a static pressure greater than 2 inches
w g (500 Pa) but less than 3 inches w g (750 Pa) shall be insulated and sealed in accordance with Section 503.2.7 Pressure
classifications specific to the duct system shall be clearly indicated on the construction documents in accordance with the International
Mechanical Code Documentation shall be furnished by the designer demonstrating that representative sections totaling at least 25
percent of the duct area have been tested and that all tested sections meet the requirements of this section
22 [503 2 7 1 3] High- pressure duct systems. Ducts designed to operate at static pressures in excess of 3 inches w g (746 Pa) shall be
insulated and sealed in accordance with Section 503.2 7. In addition, ducts and plenums shall be leak- tested in accordance with the
SMACNA HVAC Air Duct Leakage Test Manual with the rate of air leakage (CL) less than or equal to 6.0 as determined in accordance
with Equation 5 -2 Documentation shall be furnished by the designer demonstrating that representative sections totaling at least 25
percent of the duct area have been tested and that all tested sections meet the requirements of this section
CL = F x P ^(0 65) (Equation 5 -2)
where'
F = The measured leakage rate in cfm per 100 square feet of duct surface.
P = The static pressure of the test
23 [503 2 9 1] Air system balancing Each supply air outlet and zone terminal device shall be equipped with means for air balancing in
accordance with the requirements of Chapter 6 of the International Mechanical Code (IMC 603 17). Discharge dampers intended to
modulate airflow are prohibited on constant volume fans and variable volume fans with motors 10 horsepower (hp) (7 5 kW) and larger
24. [503 2 9 3] Manuals. The construction documents shall require that an operating and maintenance manual be provided to the building
owner by the mechanical contractor. The manual shall include, at least, the following.
1 Equipment capacity (input and output) and required maintenance actions
2 Equipment operation and maintenance manuals.
3 HVAC system control maintenance and calibration information, including wiring diagrams, schematics, and control sequence
descriptions Desired or field - determined setpoints shall be permanently recorded on control drawings, at control devices or, for digital
control systems, in programming comments
4 A complete written narrative of how each system is intended to operate
25. [503 2 10] Air System Design and Control Each HVAC system having a total fan system motor nameplate horsepower (hp) exceeding
5 horsepower (hp) (3 7 kW) shall meet the provisions of Sections 503 2 10 1 through 503 2 10 2
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2,6 [503.2 10 1] Allowable fan floor horsepower Each HVAC system at fan system design conditions shall not exceed the allowable fan
system motor nameplate hp (Option 1) or fan system bhp (Option 2) as shown in Table 503.2 10 1(1) This includes supply fans, return/
relief fans, and fan - powered terminal units associated with systems providing heating or cooling capability
Table 503.2.10 1(1)
Fan Power Limitation LIMIT CONSTANT VOLUME VARIABLE VOLUME
Option 1. Fan system motor nameplate hp Allowable nameplate motor hp hp < CFMS '0 0011 hp < CFMS '0.0015
Option 2 Fan system bhp Allowable fan system bhp bhp < CFMS '0 00094 + A bhp < CFMS '0.0013 +
• A
where
CFMS = The maximum design supply airflow rate to conditioned spaces served by the system in cubic feet per minute
hp = The maximum combined motor nameplate horsepower
Bhp = The maximum combined fan brake horsepower
A = Sum of [PD x CFMD / 4131].
where'
PD = Each applicable pressure drop adjustment from Table 503 2 10 1(2) in w c
Table 503 2 10 1(2)
Fan Power Limitation Pressure Drop Adjustment Credits
Fully ducted return and/or exhaust air systems = 0 5 in w c
Return and/or exhaust airflow control devices = 0 5 in w c
Exhaust filters, scrubbers or other exhaust treatment = pressure drop of device calculated at fan system design condition
Particulate filtration credit MERV 9 thru 12 = 0 5 in w c
Particulate filtration credit MERV 13 thru 15 = 0.9 in w c
Particulate filtration credit MERV 16 and greater and electronically
Enhanced filters = Pressure drop calculated at 2x clean filter pressure drop at fan system design condition
Carbon and other gas -phase air cleaners = Clean filter pressure drop at fan system design condition
Heat recovery device = Pressure drop of device at fan system design condition
Evaporative humidifier /cooler in series with another cooling coil = Pressure drop of device at fan system design conditions
Sound attenuation section = 0 15 in w c
Exhaust system serving fume hoods = 0 35 in w c
Laboratory and vivarium exhaust systems in high -rise buildings = 0 25 in w c /100 ft of vertical duct exceeding 75 feet
Exception(s)
- Hospital and laboratory systems that utilize flow control devices on exhaust and /or return to maintain space pressure relationships
necessary for occupant health and safety or environmental control shall be permitted to use variable volume fan power limitation
- Individual exhaust fans with motor nameplate horsepower of 1 hp (0.7 kW) or less
27 [503.2 10 2] Motor nameplate horsepower For each fan, the selected fan motor shall be no larger than the first available motor size
greater than the brake horsepower (bhp). The fan brake horsepower (bhp) shall be indicated on the design documents to allow for
compliance verification by the code official
Exception(s)
- For fans less than 6 bhp, where the first available motor larger than the brake horsepower has a nameplate rating within 50 percent
of the bhp, selection of the next larger nameplate motor size is allowed
- For fans 6 bhp and larger, where the first available motor larger than the bhp has a nameplate rating within 30 percent of the bhp,
selection of the next larger nameplate motor size is allowed
28. [503 2 10 3 1] Large Volume Fan Systems Fan systems over 8,000 (7 m3 /s) cfm without direct expansion cooling coils that serve
single zones are required to reduce airflow based on space thermostat heating and cooling demand A two -speed motor or variable
frequency drive shall reduce airflow to a maximum 60 percent of peak airflow or minimum ventilation air requirement as required by
Chapter 4 of the International Mechanical Code, whichever is greater
Exception(s)
- Systems where the function of the supply air is for purposes other than temperature control, such as maintaining specific humidity
levels or supplying an exhaust system
29. All service water heating requirements are listed in requirements section specific to the system
Project Title Jos A Bank Report date: 11/21/11
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