Bard W12A2-A User Manual

INSTALLATION INSTRUCTIONS
WALL MOUNTED
P ACKAGE AIR CONDITIONERS
Model:
W12A2-A W12A1-K
Bard Manufacturing Company, Inc. Bryan, Ohio 43506
Since 1914....Moving ahead just as planned.
Manual 2100-509E Page 1 of 17
CONTENTS
Getting Other Informations and Publications 3 Wall Mount General Information
Air Conditioner Wall Mount Model Nomenclature Shipping Damage General Duct Work Filters Fresh Air Intake Condensate Drain
Installation Instructions
Wall Mounting Information Mounting the Unit Wiring – Main Power Wiring – Low Voltage Wiring
Figures
Figure 1 Unit Dimensions .......................................5
Figure 2 Fresh Air Damper .....................................7
Figure 3 Mounting Instructions ...............................9
Figure 4 Wall Mounting Instructions .....................10
Figure 5 Wall Mounting Instructions .....................10
Figure 6 Common Wall Mounting
Instructions ............................................. 11
Figure 7 Fan Blade Setting Dimensions ...............16
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......4
Start Up
Requirements: R-410A Important Installer Note Service Hints High & Low Pressure Switch Sequence of Operation Compressor Control Module Adjustments Pressure Service Ports
Troubleshooting
Fan Blade Setting Dimension Refrigerant Charge Pressure Table Optional Field Installed Accessories
Tables
Table 1 Electric Heat Table ................................... 4
Table 2 Electrical Specications ...........................6
Table 3 Fan Blade Dimensions ...........................16
Table 4 Recommended Operating Ranges ........16
Table 5 Indoor Blower Performance ...................16
Table 6 Maximum ESP of Operation
Electric Heat Only ..................................16
Table 7 Pressure Table - Cooling ........................ 17
T able 8 Optional Accessories .............................17
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Manual 2100-509E Page 2 of 17
GETTING OTHER INFORMATION and PUBLICATIONS
These publications can help you install the air
conditioner or heat pump. You can usually nd these
at your local library or purchase them directly from the publisher. Be sure to consult current edition of each standard.
National Electrical Code .......................ANSI/NFPA 70
Standard for the Installation of .......... ANSI/NFPA 90A
Air Conditioning and Ventilating Systems
Standard for Warm Air Heating .........ANSI/NFPA 90B
and Air Conditioning Systems
Load Calculation for .......................... ACCA Manual J
Residential Winter and Summer Air Conditioning
Duct Design for .................................ACCA Manual D
Residential Winter and Summer Air Conditioning and Equipment Selection
For more information, contact these publishers:
ACCA Air Conditioning Contractors of America
1712 New Hampshire Avenue NW Washington, DC 20009 Telephone: (202) 483-9370 Fax: (202) 234-4721
ANSI American National Standards Institute 11 West Street, 13th Floor
New York, NY 10036 Telephone: (212) 642-4900 Fax: (212) 302-1286
ASHRAE American Society of Heating, Refrigerating
1791 Tullie Circle, NE
Atlanta, GA 30329-2305 Telephone: (404) 636-8400 Fax: (404) 321-5478
NFPA National Fire Protection Association Batterymarch Park
P.O. Box 9101 Quincy, MA 02269-9901 Telephone: (800) 344-355 Fax: (617) 984-7057
and Air Conditioning Engineers, Inc.
Manufactured under the following U.S. patent numbers:
5,485,878 and 5,301,744
Manual 2100-509E Page 3 of 17
WALL MOUNT GENERAL INFORMATION
AIR CONDITIONER WALL MOUNT MODEL NOMENCLATURE
W 12 A 2 – A 00 X X X X X J
MODEL NUMBER
CAPACITY
12 - 1 Ton
AIR
CONDITIONER
REVISIONS
VOLTS & PHASE
A - 230/208/60/1 K - 115/60/1
VENTILATION OPTIONS
X - Barometric Fresh Air Damper (Standard) B - Blank-off Plate E - Economizer (Internal) - Fully Modulating with Exhaust V - Commercial Ventilator - Motorized with Exhaust
KW
00 - No KW 02 - 2.2 KW 03 - 3.6 KW 05 - 5.0 KW
CONTROL MODULES
E - Low Ambient Control J - Telecommunication
COIL OPTIONS
X - Standard Coils
COLOR OPTIONS
X - Beige 4 - Buckeye Gray
OUTLET OPTIONS
X - Front
FILTER OPTIONS
X - 1-Inch Throwaway (Standard) P - 2-Inch Pleated
TABLE 1
ELECTRIC HEAT TABLE
Models
KW
02 18.3 7,985 03 15.0 12,760 13.0 9,705 05 20.8 17,540 18.1 13,275
j With blower watts included
A
W12A2-A W12A1-K
240V 208V 120V
j
BTU
A
j
BTU
A
j
BTU
Manual 2100-509E Page 4 of 17
32.00
30.13
17.00
2.25
5.00
2.00*
17.00
5.00
5.00*
20.25
2.50
14.63
19.72
1.75
31.06
26.75
1.50
46.00
19.88
10.00
18.25
23.75
10.00
19.72
Heater and Filter Access
Opening
Supply Air
Opening
Return Air
Opening
Return Air
Opening
Back View
Front View Right Side View
Supply Air
Back View
Entrance
Electrical
Control
Panel
Hood 4° Pitch
Built-in Rain
Electric Heat
Ventilation Air
Entrance
Low Voltage
Return air opening is in lowerReturn air opening is in upper
Entrance
factory standard position
is Blow Thru
Condenser Airflow
Flanges (Built In)
Side Wall Mounting
Shipping Location
Top Rain Flashing
field convertible position
Optional Electrical
( * ) Position of return air flanges are interchangeable between two positions. Factory built at 5 inches. Note: Maintain a minimum of 20 inches clearance on right side to allow access to control panel and allow proper airflow to outdoor condenser coil. Allow 15 inches on left side.
MIS-2608 A
Circuit Breaker
(Optional)
FIGURE 1
UNIT DIMENSIONS
(*) Position of return air anges are interchangeable between two positions. Factory built at 5 inches. NOTE: Maintain a minimum of 20 inches clearance on right side to allow access to control panel and allow proper airow to outdoor
condenser coil. Allow 15 inches on left side.
Manual 2100-509E Page 5 of 17
TABLE 2
ELECTRICAL HEAT SPECIFICATIONS
SINGLE CIRCUIT
Rated Volts
Models
W12A2-A00
A03 A05
W12A1-K00
K02
j Maximum size of the time delay fuse or HACR type circuit breaker for protection of eld wiring conductors.
Based on 75°C copper wire. All wiring must conform to NEC and all local codes.
These “Minimum Circuit Ampacity” values are to be used for sizing the eld power conductors. Refer to the National
Electrical Code (latest revision), article 310 for power conductor sizing.
CAUTION: When more than one eld power conductor circuit is run through one conduit, the conductors must be
derated. Pay special attention to note 8 of table 310 regarding Ampacity Adjustment Factors when more than 3 conductors are in a raceway.
and
Phase
230/208-1
115-1
No. Field
Power
Circuits
1 1 1
1 1
Minimum
Circuit
Ampacity
9 20 28
20 29
j
Maximum
External Fuse
or Circuit
Breaker
15 20 30
30 30
Field Power
Wire Size
14 12 10
10 10
Ground
Wire Size
14 12 10
10 10
SHIPPING DAMAGE
Upon receipt of equipment, the carton should be checked for external signs of shipping damage. If damage is found, the receiving party must contact the last carrier immediately, preferably in writing, requesting inspection by the carrier’s agent.
GENERAL
The equipment covered in this manual is to be installed by trained, experienced service and installation technicians.
The refrigerant system is completely assembled and charged. All internal wiring is complete.
The unit is designed for use with or without duct work. Flanges are provided for attaching the supply and return air ducts.
These instructions explain the recommended method to install the air cooled self-contained unit and the electrical wiring connections to the unit.
These instructions and any instructions packaged with any separate equipment required to make up the entire air conditioning system should be carefully read before beginning the installation. Note particularly “Starting Procedure” and any tags and/or labels attached to the equipment.
While these instructions are intended as a general recommended guide, they do not supersede any national and/or local codes in any way. Authorities having jurisdiction should be consulted before the installation is made. See Page 3 for information on codes and standards.
Size of unit for a proposed installation should be based on heat loss/gain calculation made according to methods of Air Conditioning Contractors of America (ACCA). The air duct should be installed in accordance with the Standards of the National Fire Protection Association for the Installation of Air Conditioning and Ventilating Systems of Other Than Residence Type, NFPA No. 90A, and Residence Type Warm Air Heating and Air Conditioning Systems, NFPA No. 90B. Where local regulations are at a variance with instructions, installer should adhere to local codes.
Manual 2100-509E Page 6 of 17
DUCT WORK
FRESH AIR INTAKE
All duct work, supply and return must be properly sized
for the design air ow requirement of the equipment.
Air Conditioning Contractors of America (ACCA) is an excellent guide to proper sizing. All duct work or portions thereof not in the conditioned space should be properly insulated in order to both conserve energy and prevent condensation or moisture damage.
Refer to Table 6 for maximum static pressure available for duct design.
Design the duct work according to methods given by the Air Conditioning Contractors of America (ACCA). When duct runs through unheated spaces, it should be insulated with a minimum of one inch of insulation. Use insulation with a vapor barrier on the outside of the insulation. Flexible joints should be used to connect the duct work to the equipment in order to keep the noise transmission to a minimum.
Ducts through the walls must be insulated and all joints taped or sealed to prevent air or moisture entering the wall cavity.
Some installations may not require any return air duct. It is recommended that on this type of installation that
a lter grille be located in the wall. Filters must be of sufcient size to allow a maximum velocity of 400 FPM.
NOTE: If no return air duct is used, applicable
installation codes may limit this cabinet to installation only in a single story structure.
FILTERS
A one inch throwaway lter is supplied with each unit. The lter slides into position making it easy to service. This lter can be serviced from the outside by removing the service door. A 2-inch pleated lter is also available as an optional accessory. The internal lter brackets are adjustable to accommodate the 2-inch lter by bending the metal tabs holding the 1-inch lter down. There are two tabs on each side of the lter.
All units are built with fresh air inlet slots punched in the service panel.
If the unit is equipped with a fresh air damper assembly, the assembly is shipped already attached to the unit. The damper blade is locked in the closed position. To allow the damper to operate, the maximum and minimum blade position stops must be installed. See Figure 2.
All capacity, efciency and cost of operation information
as required for Department of Energy “Energyguide” Fact Sheets is based upon the fresh air blank-off plate in place and is recommended for maximum energy
efciency.
The blank-off plate is available upon request from the factory and is installed in place of the fresh air damper shipped with each unit.
CONDENSATE DRAIN
This unit employs an automatic condensate disposal system consisting of a base drain pan, drain valve and fan blade with slinger ring. A plastic drain hose extends from the evaporator drain pain at the top of the unit to the base drain pan at the bottom. At temperatures above 40°, the drain valve located between the condenser coil and fan shroud is closed allowing water to build up in the base to a height of 5/8" to 3/4". The fan blade with slinger then rotates in this water and throws the water onto the condenser coil. This disposes of the water by evaporating it on the hot condenser.
At temperatures below 40°, the drain valve opens draining the base pan and preventing freeze ups that could damage the coil or fan blade.
FIGURE 2
FRESH AIR DAMPER
Manual 2100-509E Page 7 of 17
INSTALLATION INSTRUCTIONS
WALL MOUNTING INFORMATION
1. These units are secured by wall mounting brackets which secure the unit to the outside wall surface at both sides.
2. On wood frame walls, the wall construction must be strong and rigid enough to carry the weight of the unit without transmitting any unit vibration.
3. Concrete block walls must be thoroughly inspected to insure that they are capable of carrying the weight of the installed unit.
MOUNTING THE UNIT
1. Two holes, for the supply and return air openings, must be cut through the wall as shown in Figure 3.
2. Locate and mark lag bolt locations, if desired. See Figure 3.
3. Hook top rain ashing under back bend of top. Top rain ashing is shipped attached to the back of the
unit on the right side.
4. Position unit in opening and secure with 5/16 lag
bolts; use 7/8 inch diameter at washers on the lab
bolts.
5. Secure rain ashing to wall and caulk across entire
length of top. See Figure 3.
6. For additional mounting rigidity, the return air and supply air frames or collars can be drilled and screwed or welded to the structural wall itself (depending upon wall construction). Be sure to observe required clearance if combustible wall.
7. On side-by-side installations, maintain a minimum of 20 inches clearance on right side to allow access
to control panel and allow proper airow to outdoor
coil. Additional clearance may be required to meet local or national codes.
Manual 2100-509E Page 8 of 17
FIGURE 3
MOUNTING INSTRUCTIONS
Manual 2100-509E Page 9 of 17
FIGURE 4
WALL MOUNTING INSTRUCTIONS
SEE FIGURE 3 - MOUNTING INSTRUCTIONS
FIGURE 5
WALL MOUNTING INSTRUCTIONS
SEE UNIT DIMENSIONS, FIGURE 1, FOR ACTUAL DIMENSIONS
Manual 2100-509E Page 10 of 17
FIGURE 6
COMMON WALL-MOUNTING INSTALLATIONS
Manual 2100-509E Page 11 of 17
WIRING – MAIN POWER
Refer to the unit rating plate for wire sizing information and maximum fuse or “HACR” type circuit breaker size. Each outdoor unit is marked with a “Minimum Circuit
Ampacity”. This means that the eld wiring used must
be sized to carry that amount of current. Depending on the installed KW of electric heat, there may be two
eld power circuits required. If this is the case, the unit
serial plate will so indicate. All models are suitable only for connection with copper wire. Each unit and/or wiring diagram will be marked “Use Copper Conductors Only”. These instructions must be adhered to. Refer to the National Electrical Code (NEC) for complete current carrying capacity data on the various insulation grades of wiring material. All wiring must conform to NEC and all local codes.
The electrical data lists fuse and wire sizes (75°C copper) for all models, including the most commonly used heater
sizes. Also shown are the number of eld power circuits
required for the various models with heaters. The unit rating plate lists a “Maximum Time Delay Relay
Fuse” of “HACR” type circuit breaker that is to be used with the equipment. The correct size must be used for proper circuit protection and also to assure that there will be no nuisance tripping due to the momentary high starting current of the compressor motor.
WIRING – LOW VOLTAGE WIRING
230/208, 1 phase equipment use dual primary voltage transformers. All equipment leaves the factory wired on 240V tap. For 208V operation, reconnect from 240V to 208V tap. The acceptable operating voltage range for the 240 and 208V taps are:
Tap Range
240 253 - 216 208 220 - 187
NOTE: The voltage should be measured at the eld
power connection point in the unit and while the unit is operating at full load (maximum amperage operating condition).
For wiring size and connections, refer to Wiring Manual 2100-507.
Manual 2100-509E Page 12 of 17
START UP
THESE UNITS REQUIRE R-410A REFRIGERANT AND POL YOL ESTER OIL.
GENERAL:
1. Use separate service equipment to avoid cross contamination of oil and refrigerants.
2. Use recovery equipment rated for R-410A refrigerant.
3. Use manifold gauges rated for R-410A (800 psi/250 psi low).
4. R-410A is a binary blend of HFC-32 and HFC-125.
5. R-410A is nearly azeotropic - similar to R-22 and R-12. Although nearly azeotropic, charge with liquid refrigerant.
6. R-410A operates at 40-70% higher pressure than R-22, and systems designed for R-22 cannot withstand this higher pressure.
7. R-410A has an ozone depletion potential of zero, but must be reclaimed due to its global warming potential.
8. R-410A compressors use Polyol Ester oil.
9. Polyol Ester oil is hygroscopic; it will rapidly absorb moisture and strongly hold this moisture in the oil.
10. A liquid line dryer must be used - even a deep vacuum will not separate moisture from the oil.
11. Limit atmospheric exposure to 15 minutes.
12. If compressor removal is necessary, always plug compressor immediately after removal. Purge with small amount of nitrogen when inserting plugs.
TOPPING OFF SYSTEM CHARGE
If a leak has occurred in the system, Bard Manufacturing recommends reclaiming, evacuating (see criteria above), and charging to the nameplate charge. If done correctly, topping off the system charge can be done without problems.
With R-410A, there are no signicant changes in the
refrigerant composition during multiple leaks and recharges. R-410A refrigerant is close to being an azeotropic blend (it behaves like a pure compound or single component refrigerant). The remaining refrigerant charge, in the system, may be used after leaks have occurred and then “top-off” the charge by utilizing the pressure charts on the inner control panel cover as a guideline.
REMEMBER: When adding R-410A refrigerant, it must come out of the charging cylinder/tank as a liquid to avoid any fractionation, and to insure optimal system performance. Refer to instructions for the cylinder that is being utilized for proper method of liquid extraction.
WARNING
Failure to conform to these practices could lead to damage, injury or death.
SAFETY PRACTICES:
1. Never mix R-410A with other refrigerants.
2. Use gloves and safety glasses, Polyol Ester oils can be irritating to the skin, and liquid refrigerant will freeze the skin.
3. Never use air and R-410A to leak check; the
mixture may become ammable.
4. Do not inhale R-410A – the vapor attacks the nervous system, creating dizziness, loss of coordination and slurred speech. Cardiac irregularities, unconsciousness and ultimate death can result from breathing this concentration.
5. Do not burn R-410A. This decomposition produces hazardous vapors. Evacuate the area if exposed.
6. Use only cylinders rated DOT4BA/4BW 400.
7. Never ll cylinders over 80% of total capacity.
8. Store cylinders in a cool area, out of direct sunlight.
9. Never heat cylinders above 125°F.
10. Never trap liquid R-410A in manifold sets, gauge
lines or cylinders. R-410A expands signicantly at
warmer temperatures. Once a cylinder or line is full of liquid, any further rise in temperature will cause it to burst.
Manual 2100-509E Page 13 of 17
START UP
IMPORTANT INSTALLER NOTE
For improved start up performance, wash the indoor coil with a dishwasher detergent.
SERVICE HINTS
1. Caution owner to maintain clean air lters at all
times. Also not to needlessly close off supply and
return air registers. This reduces airow through the
system which shortens equipment service life as well as increasing operation costs.
2. The unit is equipped with a high pressure cut out switch.
3. Check all power fuses or circuit breakers to be sure they are the correct rating.
4. Periodic cleaning of the outdoor coil to permit full
and unrestricted airow circulation is essential.
HIGH & LOW PRESSURE SWITCH
The W12Aà models are supplied with a remote reset high and low pressure switch. If tripped, this pressure switch may be reset by turning the thermostat off then back on again.
SEQUENCE OF OPERATION
HEATING – Circuit R-Y makes at thermostat pulling in compressor contactor, starting the compressor and outdoor motor. The G (indoor motor) circuit is automatically completed on any call for cooling operation or can be energized by manual fan switch on subbase for constant air circulation. On a call for heating, circuit R-W1 make at the thermostat pulling in heat contact for the strip heat and blower operation.
COMPRESSOR CONTROL MODULE
The compressor control module is optional on the models covered by this manual. The compressor control is an anti-short cycle/lockout timer with high and low pressure switch monitoring and alarm relay output.
During routine operation of the unit with no power interruptions the compressor will operate on demand with no delay.
High Pressure Switch and Lockout Sequence
If the high pressure switch opens, the compressor contactor will de-energize immediately. The lockout timer will go into a soft lockout and stay in soft lockout until the high pressure switch closes and the delay on break time has expired. If the high pressure switch opens again in this same operating cycle the unit will go into manual lockout condition and the alarm relay circuit will energize. Recycling the wall thermostat resets the manual lockout.
Low Pressure Switch, Bypass and Lockout Sequence
If the low pressure switch opens for more than 120 seconds, the compressor contactor will de-energize and go into a soft lockout. Regardless the state of the low pressure switch, the contactor will reenergize after the delay on make time delay has expired. If the low pressure switch remains open, or opens again for longer that 120 seconds, the unit will go into manual lockout condition and the alarm relay circuit will energize. Recycling the wall thermostat resets the manual lockout.
Alarm Relay Output
Alarm terminal is output connection for applications where alarm relay is employed. This terminal is powered whenever compressor is locked out due to HPC or LPC sequences as described.
NOTE: Both high and low pressure switch controls
are inherently automatic reset devices. The high pressure switch and low pressure switch
cut out and cut in settings are xed by specic
air conditioner or heat pump unit model. The lockout features, both soft and manual, are a function of the Compressor Control Module.
Adjustable Delay on Make and Break Timer
On initial power up or any time power is interrupted to the unit the delay on make period begins, which will be 2 minutes plus 10% of the delay on break setting. When the delay on make is complete and the high pressure switch (and low pressure switch if employed) is closed, the compressor contactor is energized. Upon shutdown the delay on break time starts and prevents restart until the delay on break and delay on make periods have expired.
Manual 2100-509E Page 14 of 17
ADJUSTMENTS
PRESSURE SERVICE PORTS
Adjustable Delay on Make and Delay on Break Timer
The potentiometer is used to select Delay on Break time from 30 seconds to 5 minutes. Delay of Make (DOM) timing on power up and after power interruptions is equal to 2 minutes plus 10% of Delay of Break (DOB) setting:
0.5 minute (30 seconds) DOB = 123 second DOM
1.0 minute (60 seconds) DOB = 126 second DOM
2.0 minute (120 seconds) DOB = 132 second DOM
3.0 minute (180 seconds) DOB = 138 second DOM
4.0 minute (240 seconds) DOB = 144 second DOM
5.0 minute (300 seconds) DOB = 150 second DOM During routine operation of the unit with no power
interruptions the compressor will operate on demand with not delay.
Typical Settings for Dual Unit Installation:
Unit No. 1: DOB set at 2 minutes, and DOM is 132 seconds.
Unit No. 2: DOB set at 4 minutes, and DOM is 144 seconds.
High and low pressure service ports are installed on all units so that the system operating pressures can be observed. Pressure chart can be found later in the manual covering all models. It is imperative to match the correct pressure chart to the unit by model number.
Manual 2100-509E Page 15 of 17
TROUBLESHOOTING
FAN BLADE SETTING DIMENSIONS
Shown in Figure 7 is the correct fan blade setting dimension for proper air delivery across the outdoor coil.
Any service work requiring removal or adjustment in the fan and/or motor area will require that the dimension below be checked and blade adjusted in or out on the motor shaft accordingly.
FIGURE 7
FAN BLADE SETTING DIMENSION
TABLE 4
INDOOR BLOWER
PERFORMANCE
CFM @ 230V / 115V
E.S.P.
in
H
O
2
.0 .1 .2 .3 .4
Dry / Wet
High
530 / 500 485 / 460 440 / 425 390 / 375 325 / 300
W12Aà
230V / 115V
TABLE 5
RATED CFM AND ESP
RECOMMENDED AIRFLOW RANGE
°
Model
W12Aà
° Rated CFM and ESP on low speed tap.
Rated
CFM
400 .10 500 - 300
°
Rated
ESP
Recommended
Airow Range
Dry / Wet
Low
465 / 425 415 / 400 365 / 350 315 / 300 270 / 265
TABLE 3
FAN BLADE DIMENSION
Model Dimension A
W12Aà
1/2"
R-410A
REFRIGERANT CHARGE
This unit was charged at the factory with the quantity of refrigerant listed on the serial plate. AHRI capacity and
efciency ratings were determined by testing with this
refrigerant charge quantity. The following pressure tables show nominal pressures for
the units. Since many installation specic situations can
affect the pressure readings, this information should only
be used by certied technicians as a guide for evaluating
proper system performance. They shall not be used to adjust charge. If charge is in doubt, reclaim, evacuate and recharge the unit to the serial plate charge.
TABLE 6
MAXIMUM ESP OF OPERATION
ELECTRIC HEAT ONLY
Model ESP
W12A2-A00
A03 A05
W12A1-K00
K02
Values shown are for units equipped with STD
1" throwaway lters. Derate ESP by .15 for 2" pleated lters.
.35 .35 .35
.35 .35
Manual 2100-509E Page 16 of 17
TABLE 7
PRESSURE TABLE
COOLING
Model
Return Air
Temperature
75 deg. DB
62 deg. WB
W12Aà
80 deg. DB
67 deg. WB
85 deg. DB
72 deg. WB
Low Side Pressure +4 PSIG High Side Pressure +10 PSIG
Air Temperature Entering Outdoor Coil °F
Pressure 75° 80° 85° 90° 95° 100° 105° 100° 115°
Low Side High Side
Low Side High Side
Low Side High Side
120 291
128 298
132 308
124 310
133 318
138 329
129 332
138 340
143 352
133 355
142 364
147 377
136 379
143 387
150 403
138 405
148 415
153 430
141 432
151 443
156 459
142 460
152 472
157 489
143 490
153 503
158 521
TABLE 8
OPTIONAL FIELD INSTALLED ACCESSORIES
Model Description
BOP-1A Blank Off Plate X BFAD-1 Barometric Fresh Air Damper X EIFM-1 Economizer with Exhaust X CMA-28 Low Ambient Control X CRVS-1 Commercial Ventilator - Spring Return X
à
W12A
Manual 2100-509E Page 17 of 17
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