Plans (96) F"" ,0,,, "'
:? JUL 1 8 2013
TIGARD 0;71 -7r)
City of Tigard
January 1,2017
Re: Mechanical Equipment Requirements
To Whom It May Concern:
When submitting for a permit to install mechanical equipment on a roof(RTU, split system
condenser or air handler), the following must be provided:
10 (2) copies of cut sheets showing weight,tonnage, size and capacities of unit to be installed.
• If a new curb is being installed,provide (2) copies of the listing for that product.
When trying to decide if engineering will be required for either lateral or vertical loads,the following
guidelines shall be used:
• If the new unit weighs more than 400 pounds,a lateral design and calculations are required
from a registered design professional. Lateral design shall comply with Sec. 1613 of the
Oregon Structural Specialty Code and ASCE 7-05.
• If the unit is 400 pounds or less,lateral design will not be required,however a drawing
showing adequate attachment to the curb and/or roof shall be shown on the plans
specifying number and type of fasteners to be used:
V• Mechanical fasteners shall be used to anchor any mechanical unit.
• Vertical loads shall be designed when a new unit is installed that changes the size of the
footprint of the unit in relation to an existing curb or if a new curb is installed.
✓ • No design will be required if the footprint of the unit does not change and it fits on the
existing curb (push/pull installations) and weighs the same or less than the original unit.
V• Verification of the weights of the old and new units shall be submitted along with the permit
application.
OFFICE COPY
Dan Nelson CITY OF TIGARD
City of Tigard REVIEWED FOR CODE COMPLIANCE
Senior Plans Examiner
503-718-2436 Approved
dann@tigard-or.gov OTC: { 1
Permit#: y y e n I $` 00S
4 J
Address: Ij as-LI s Due 1100,y, rd
Suite#:
Date: -7-a_3_)
13125 SW Hall Blvd. • Tigard, Oregon 97223 • 503.639.4171
TTY Relay: 503.684.2772 .• www.tigard-or.gov
Bryant ! 4 . '.
Air Conditioning ,, ' '44, ,. -
TUNDRA
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S E R I E S
The use of scroll compressors provides highly efficient cooling
operation. Heating efficiency is guaranteed through the use of
I I superior heat exchangers and 2-stage,redundant gas valves on
all units.
Constructed of galvanized steel, bonderized and coated with a
_ = _ pre-painted, baked enamel finish, 581B unit cabinetsare de-
[� signed fora long life and attractive appearance.The paint finish
�. -0�� is anon-chalking type that is capable of withstanding Federal
�.�.; test Method Standard No. 141 (Method 6061) 500-hour salt
� spray test. Non-corrosive condensate pans and primed interior
�`�/ '_'' Unit 581B panels extend unit life and preserve their attractive appearance.
(Size 072 Shown) The 581B units were designed with the service person in mind.
Standard size filters, no tool filter access, and permanently-
lubricated fan motors simplify unit maintenance.The unit's com-
pact size permits easy shipment, rigging, and installation.
Built-in diagnostics on the integrated gas unit control board sim
I plify troubleshooting.
Designed to be easily convertible from vertical discharge to hori-
_.� zontal discharge, 581B units are readily adaptable to a diverse
range of new construction and replacement applications. For
/ vertical discharge jobs, ductwork can be connected directly to
the roof curb,allowing ductwork to be completed before the unit
is installed. All units include easily replaceable 2-in. internal
I
°' � filters.
' All 581B units are listed with UL (Underwriters' Laboratories),
' e0- Unit
Unit 5816
(Size 150 Shown) ULC (Underwriters' Laboratories Canada), ARI (Air-Con-
ditioning & Refrigeration Institute), and the CEC(California En-
ergy Commission).
DESCRIPTION STANDARD FEATURES
Specifically designed to effectively compete in the high- THE FACTORY-ASSEMBLED PACKAGE is a compact, fully
efficiency market, the 581 B gas heating/electric cooling units self-contained combination gas heating/electric cooling unit that
are ideal for most commercial ground level and rooftop applica- is prewired, prepiped, and precharged for minimum installation
tions. 581 B units are available in a variety of heating sizes, expense.
ranges, and voltage options and are capable of meeting most
job requirements. INTEGRATED GAS UNIT CONTROL BOARD(IGC)increases
581 B units encompass state-of-the-art technology through the reliability,safety,and efficiency of the 581 B gas heating roof-
Thetheir innovative use of efficient scroll compressors, sophisti- top units.The control board provides timed control of evaporator
fan functioning and burner ignition. Built-in diagnostics simplify
cated gas heating, corrosion resistant design, electronic con- troubleshooting and provide system status and fault notification
trols, and internally enhanced copper tubes. 581 B units can through a light-emitting diode(LED).The LED is visible without
reach SEERs (Seasonal Energy Efficiency Ratio) as high as removing the unit control box access panel.The IGC also pro-
12.3, EERs (Energy Efficiency Ratios) as high as 10.3, and vides exclusive anti-cycle protection for gas heat operation.
AFUE (Annual Fuel Utilization Efficiency)and Steady State Ef-
ficiencies as high as 82%. Isolated compressor rails, indepen- UNITS ARE EASILY CONVERTED from vertical to horizontal
dent compressor mountings, and standard belt-driven evap- configuration. Fast and easy conversion enables the 581 B to be
orator fan motors ensure quiet operation for all 581 B units. used for a variety of applications and makes retrofit and add-on
All 581 B units are characterized by distinctive safety features jobs easier. Changing the configuration can be accomplished
and high reliability. The units are fully protected by numerous simply by rearranging the 2 movable vertical and horizontal duct
standard internal safety features including a low-pressure/loss- panels.
of-charge switch, high-pressure switch, freeze-protection ther- HEAVY-GAGE ROLL-FORMED BASE RAIL features forklift
mostat, internal compressor overload, as well as the Cycle- slots and rigging holes for easier maneuvering and installation.
LOCTM circuit board that prevents compressor short cycling. A stretch-wrap packaging protects the unit during shipment and
storage.
Form No. PDS 581 B.36.2B
INTERNAL RETURN-AIR FILTERS are provided. Two-in., compressor operation will provide the most economical opera-
throwaway filters are standard on all units and can be easily ac- tion. The economizer is also equipped with 15% barometric
cessed through a removable (tool-less) filter access door lo- relief.
cated directly above the outdoor air intake hood.On all units,no SUGGESTED USE:
tools are required and there is no need to field-fabricate filter • Allows a fixed percentage of outdoor air anytime the evapo-
racks or install external filter accessories. rator fan is on,or operates in economizer mode if outdoor air
DURABLE, EFFICIENT SCROLL COMPRESSORS minimize can provide cooling, but closes when the evaporator fan is off
service costs. Scroll compressors are standard on all units, are to prevent cold backdrafts and wasted energy.
fully hermetic,and feature vibration isolators for extremely quiet • To reduce energy usage. Use whenever the number of hours
operation.Compressors are mounted on independent base rails of operation at below 55 F are significant.
for additional sound integrity and structural support.The 581 B's • The damper may be used on either vertical or horizontal
efficient condenser fan and motor design permits operation at a applications.
low sound power of 8.0 bels (sizes 036-060), 8.6 bels (sizes Integrated PARABLADE Economizer—Package features in-
072-120), or 8.8 bels (size 150). The Cycle-LOC system pro- terposing blade design, standard enthalpy control, 30% baro-
tects against compressor short cycling. metric relief capability (036-072), 45% barometric relief
TWO INDEPENDENT COMPRESSOR CIRCUITS (sizes 090- capability (090-150), and built-in spring return for close on
150) provide pinpoint comfort control, higher operating effi- power loss.
ciency, and additional back-up capability. SUGGESTED USE:
NON-CORROSIVE, SLOPED, CONDENSATE DRAIN PAN is • Allows a fixed percentage of outdoor air anytime the evapo-
factory installed with drain connections located on the bottom rator fan is on, or operates in economizer mode if outdoor air
and end of the unit for unobstructed run-off. The condensate can provide cooling, but closes when the evaporator fan is off
drain pan conforms to ASHRAE (American Society of Heating, to prevent cold backdrafts and wasted energy.
Refrigeration and Air Conditioning Engineers) Standard 62 to • To reduce energy usage. Use whenever the number of hours
meet most Indoor Air Quality(IAQ)specifications. of operation at below 55 F are significant.
SIMPLIFIED DUCTWORK CONNECTIONS use the logical 2 to • The damper may be used only on vertical applications.
•
1 aspect ratio.On vertical discharge units,ductwork attaches di- Foindoor air quality to control humidity levels using enthalpy
rectly to the roof curb. conn trol.
STANDARD THRU-THE-BOTTOM SERVICE CONNECTION Unit Mounted Disconnect — Factory-installed, internally
capability allows power and control wiring to be easily routed mountedfudswitch.NEC (National disconnectEleswitch Code) and Ucessibed
through the bottom of rooftop.No additional holes in the roof are EquippedseThe is externally accessible.
with disconnect switch lockout capability.
necessary.Accessory power connection package is required.To SUGGESTED USE:
simplify installation, both power and control connections are • To provide unit power shutoff.
made on the same side of the unit.
ADAPTABLE CONTROL SYSTEM works with all conventional Convenience Outlet — Factory-installed, internally mounted
and programmable thermostats and can be easily integrated and externally accessible 115-v female receptacle. Includes
into monitor control systems. 15-amp GFI receptacle with independent fuse protection. Volt-
age required to operate convenience outlet is provided by
STATE-OF-THE-ART COILS feature internally enhanced cop- factory-installed step down transformer.
per tubing and are thoroughly leak tested with helium particles SUGGESTED USE:
at the factory.Condenser coils have louvered,aluminum lanced • To provide 115-v power at unit site for maintenance or service
fins, providing maximum heat transfer for optimum efficiency tools.
and easy cleaning.
MULTI-PASS HEAT EXCHANGERS improve efficiency by op- FIELD-INSTALLED ACCESSORY
timizing heat transfer. The tubular design permits hot gases to DESCRIPTION AND USAGE
make multiple passes across the path of the supply air. In ad-
dition,dimpled heat exchanger tubes force the hot gases to stay Roof Curb—Full-perimeter galvanized steel support frame in
in close contact with the cell walls to improve heat transfer. 14-and 24-in. high designs provides wood nailer to attach roof
REFRIGERANT CIRCUITRY PROTECTED by standard loss- counter flashing. Insulated basepans in curb are provided to
prevent condensation. Ductwork attaches to rails provided in
of-charge/low-pressure switch, freeze-protection thermostat, the roof curb.A gasket is provided to form an air-and water-tight
high-pressure switch, filter drier, and Cycle-LOCT"" device. An seal between unit and curb. The gasket meets the stand-
exclusive metering device precisely controls the refrigerant flow ards of the NRCA(National Roofing Contractors'Association).
and prevents slugging and floodback. Optimum unit perfor- SUGGESTED USE:
mance is obtained by metering the circuits individually. • Rooftop application for vertical discharge.
• Slab-mounted applications when elevation of the unit is
FACTORY-INSTALLED OPTIONS necessary.
DESCRIPTION AND USAGE Utility Connection Package — Connection plates for power
Integrated VarislideTM Economizer— Package consists of a and gas,which attach to the roof curb, allowing the power and
low-leakage sliding damper with control board.The economizer gas to be routed through the roof curb.
will allow a fixed percentage between zero and 100% outdoor SUGGESTED USE:
ventilation air into the unit any time the evaporator fan is run- • To minimize the number of roof penetrations.
ning. The damper will close whenever a power loss occurs.A
dry-bulb thermostat placed outdoors will bring in 100%outdoor Condenser Coil Hail Guard—Package consists of a hood and
air whenever the temperature of the outdoor air alone can ad- coil grille which attach to the condenser coil.
equately provide cooling. If the economizer alone cannot pro-
vide enough cooling, then simultaneous economizer and •
To protect the condenser coil from hail and other debris.
2
CONTENTS
Page
Model Description 4
ARI Capacities 5
Heating Capacities and Efficiencies 5
Dimensional Drawings 6-9
Specifications 10,11
Selection Procedure 12
Gross Cooling Capacities 13-16
Air Delivery 17-24
Electrical Data 25,26
Performance Data 27-29
Operating Sequence 30,31
Typical Control Wiring 31
Typical Field Wiring 32
Typical Wiring Schematic 33,34
Application Data 35,36
Engineers'Specification Guide 37,38
MODEL DESCRIPTION
(ODS Model Number)
581B E V 090 180 A A
581 B —Single Package
High-Efficiency
Gas/Electric Unit
Voltage Designation
E— 460-3 60 Evaporator-Fan Motor
J — 208/230-1-60 A — Belt Drive Motor
P— 208/230-3-60
T — 575-3-60
Fuel and Control Type Factory-Installed Options*
A — Standard Unit
V — Natural Gas/Direct
Spark Ignition
Nominal Tons Gas Heat Input(Btuh)
036 — 3 090 — 71/2 072 — 72,000 180 — 180,000
048 — 4 102 — 81/2 115 — 115,000 220 — 224,000
060 — 5 120 — 10 125 — 125,000 250 — 250,000
072 — 6 150 — 121/2 150 — 150,000
LEGEND
ODS — Order Distribution System
*Refer to the CMU price pages for ordering codes on factory-installed
options.
4
( 1
Manual Outdoor-Air Damper—Package consists of a sliding Low NO. Kit— Consists of baffles to be inserted in the heat
damper which can be set at any position between zero and 25% exchanger tubes to reduce the level of nitric oxide emissions to .
outdoor air. The package includes a rainhood and birdscreen. 40 nanograms per joule.
SUGGESTED USE: SUGGESTED USE:
• To allow a fixed percentage of outdoor air for ventilation under • To meet local NOX emission standards. •
all conditions. Flue Hood Protector—Consists of a sheet metal shield to go
• The damper may be used on either vertical or horizontal air- over the gas flue exhaust.
flow applications. SUGGESTED USE:
100%Two-Position Damper—Package consists of a low-leak • If additional protection from hot flue hood is required—for ex-
damper assembly.The damper will allow from zero to 100%out- ample, if unit is slab mounted near a driveway.
door air into the unit any time the evaporator fan is running.The Thermostats and Subbases — Provides staged cooling and
damper will close whenever a power loss occurs. When the heating, automatic(or manual)changeover,fan control, and in-
evaporator fan is off, the damper will be closed.The damper is dicator light.
also equipped with 15% barometric relief. SUGGESTED USE:
SUGGESTED USE: • To control unit operations.
• Allows a fixed percentage of outdoor air any time the evapo-
rator fan is on, but closes when the evaporator fan is off to Condenser Coil Grille—The grille protects the condenser coil
prevent cold backdrafts and wasted energy. from damage and requires no additional clearance.
• The damper may be used on either vertical or horizontal air- SUGGESTED USE:
flow applications. • When unit is located in high traffic areas or could be subject to
• To effectively fulfill many IndoorAir Quality(IAQ)specifications. damage.
25%Two-Position Damper—Package consists of a low-leak Condenser Coil Salt Spray Protection Package—The grille
damper assembly.The damper will allow from zero to 25%out- protects the condenser coil from damage caused by salt spray.
door air into the unit any time the evaporator fan is running.The SUGGESTED USE:
damper will close whenever a power loss occurs. When the • To protect units located in coastal areas.
evaporator fan is off, the damper will be closed. Flue Discharge Deflector—The flue discharge deflector ex-
SUGGESTED USE: hausts flue discharge up and away from the unit.
• Allows a fixed percentage of outdoor air any time the evapo- SUGGESTED USE:
rator fan is on, but closes when the evaporator fan is off to • To allow minimum flue side clearances to combustibles to be
prevent cold backdrafts and wasted energy. reduced to 18 inches.
• The damper may be used on either vertical or horizontal air- Electronic Programmable Thermostat—The programmable
flow applications. thermostat has dual set points for heating/cooling and controls
Integrated Varisliden" Economizer— See description listed two-stage heating and cooling. Depending upon the model se-
under Factory-Installed Options Description and Usage section lected, the thermostat may include or be used in conjunction
on page 2. with an electronic time clock for energy saving programmable
LP(Liquid Propane) Kit—Kit consists of gas orifices to con- setback.
vert the unit for use with LP gas. No gas valve modification is SUGGESTED USE:
required. • To increase energy savings.
SUGGESTED USE: • To program building's occupied and unoccupied modes.
• When natural gas cannot be obtained. Remote Status Panel —The decorative, wall-mounted panel
Solid-State Enthalpy Control—Package consists of a solid- with separate two-stage heating/cooling thermostat with auto-
state sensor which is capable of sensing outdoor-air heat con- matic changeover. The kit consists of a system switch, fan
tent (temperature and humidity) and controlling Varislide switch, and operation lights. It offers ventilation control for the
economizer cut-in point to have minimum heat content air pass- economizer through its ability to modulate the damper to the
ing over the evaporator coil.The solid-state enthalpy control re- fully open,fully closed, or normal position.
places the standard dry-bulb thermostat in the Varislide SUGGESTED USE:
economizer. • To control the economizer in the occupied and unoccupied
SUGGESTED USE: modes.
• To enhance economizer operation for additional energy • To provide immediate status of the operating mode.
savings. Fan/Filter Status—Provides status of indoor fan(ON/OFF)or
• Enthalpy control is standard on PARABLADE economizers. filter(CLEAN/DIRTY). Status is displayed with an indicator light
Differential Enthalpy Control—Package consists of a solid- at the thermostat in other applications.
state sensor to be used in conjunction with the solid-state en- SUGGESTED USE:
thalpy control. This sensor is mounted on the economizer • To provide additional information on fan or filter status.
assembly so that it can sense building return-air temperature.
The 2 sensors will determine which combination of outdoor and Motormaster Device — Kit consists of a solid-state control
return air will provide the greatest energy savings. and condenser coil temperature sensor to modulate the speed
SUGGESTED USE: of the condenser fan motors in order to maintain condenser-coil
• To enhance economizer operation for maximum energy lead pressure for proper cooling operation.
savings. SUGGESTED USE:
Time Guard II Device—Package consists of a control to be • Whenever cooling is required at low outdoor ambient tem-
field wired into the unit controls, and provides a 5-minute delay peratures (between 25 F and–20 F).
in compressor operation between cooling cycles. • Motormaster kit is not usually required when economizer is
SUGGESTED USE: used.
• Prevents compressor short cycling when rapid compressor
cycles may be a problem.
3
•
SELECTION PROCEDURE (with 581 BJV048115 example)
I DETERMINE COOLING AND HEATING REQUIRE- IV DETERMINE FAN SPEED AND POWER REQUIRE-
MENTS AT DESIGN CONDITIONS: MENTS AT DESIGN CONDITIONS:
Given: Before entering the Air Delivery tables on pages 17-24,
Total Cooling Capacity Required 44,600 Btuh calculate the total static pressure required based on unit
Sensible Heat Capacity 32,000 Btuh components. From the given and the Economizer Static
Required Heating Capacity 85,000 Btuh Pressure Drop table on page 28, find:
Condenser Entering Air Temperature 95 F External static pressure 0.75 in. wg
Evaporator Entering Air Temperature 82 F Edb/ VarislideTM Economizer 0.05 in. wg
67 F Ewb Total Static Pressure 0.80 in.wg
Evaporator Air Quantity 1600 cfm
External Static Pressure 0 75 in.wg Enter the Air Delivery table for 581 B048 Vertical Dis-
Power Supply(V-Ph-Hz) 230-1-60 charge.At 1600 cfm the motor will deliver 1.10 in.wg static
pressure and 1.17 bhp.This will adequately handle the job
II DETERMINE UNIT SIZE: requirements.
Select unit based on cooling requirements. Using the Evaporator-Fan Motor Efficiency tale on
Enter Gross Cooling Capacities tables on pages 13-16 at page 28, convert 1.17 bhp to watts.
condenser entering temperature of 95 F,evaporator air en- bhp (746)
tering at 1600 cfm and 80 F db and 67 F wb.The 581 B048 Watts =
unit will provide a gross cooling capacity of 48,900 Btuh motor efficiency
and a sensible heat capacity of 34,700 Btuh. Since the Watts = 1.17 (746)
evaporator air temperature is 82 F,calculate sensible heat .75
capacity correction, using the formula found in Note 3 fol- Watts = 1164
lowing the Gross Cooling Capacities tables.
For this example: V DETERMINE NET COOLING CAPACITY:
Correction factor= 1.10 x(1 - .21)x(82 -80)= 1.738 Cooling capacities are gross capacities and do not include
From the Gross Cooling Capacities tables find that the indoor (evaporator) fan motor (IFM) heat. Determine net
capacity using the following formula:
sensible heat capacity at 80 F is 34.7 MBtuh(equivalent to
34,700 Btuh).Add 34,700 and 2,781 to get the corrected Net capacity=gross capacity- IFM heat
sensible heat capacity of 37,481. =48,900 Btuh - 1164 Watts (3.413 Bt . )
NOTE:Unit ratings are gross capacities and do not include Watt
the effect of evaporator-fan motor heat. To calculate net =48,900 Btuh - 3973 Btuh
capacities, see Step V. Net capacity= 44,927 Btuh
III SELECT HEATING CAPACITY OF UNIT TO PROVIDE Net sensible capacity= 37,481 - 3973 Btuh
DESIGN CONDITION REQUIREMENTS: Net sensible capacity= 33,508 Btuh
In the Heating Capacities table on page 5, note that unit
5818048115 will provide output capacity of 92,000 Btuh,
which is adequate for the given application.
12