Bard WA372, WA302 User Manual
INSTALLATION
INSTRUCTIONS
WALL MOUNTED
PACKAGED
AIR CONDITIONER
Models:
WA302
WA372
© Copyright 2002
Bard Manufacturing Company, Inc.
Bryan, Ohio 43506
Since 1914...moving ahead just as planned.
Manual No.: 2100-404D
Supersedes: 2100-404C
File: Volume III, Tab 16
Date: 08-01-07
Manual 2100-404D
Page 1 of 19
Contents
Getting Other Information and Publications
For more information,
contact these publishers .......................................... 3
Wall Mount General Information
Air Conditioner Wall Mount Model Nomenclature .... 4
Shipping Damage .................................................... 6
General .................................................................... 6
Duct Work ................................................................ 7
Filters ....................................................................... 7
Fresh Air Intake ....................................................... 7
Condensate Drain .................................................... 7
Installation Instructions
Wall Mounting Information ....................................... 8
Mounting the Unit .................................................... 8
Top Outlet Only ........................................................ 8
Wiring — Main Power ........................................ 8 & 9
Low Voltage Connections ........................................ 9
Wiring — Low Voltage Wiring .................................. 9
Figures
Start Up
Important Installer Note ......................................... 15
High Pressure Switch ............................................ 15
Three Phase Scroll Compressor Start Up
Information ............................................................. 15
Phase Monitor ....................................................... 15
Service Hints ......................................................... 15
Sequence of Operation .......................................... 15
Compressor Control Module .................................. 16
Adjustments ........................................................... 16
Pressure Service Ports .......................................... 16
Troubleshooting
Fan Blade Setting Dimensions .............................. 17
Removal of Fan Shroud ......................................... 17
Refrigerant Charge ................................................ 17
Cooling Pressures ................................................. 18
Optional Accessories ............................................. 19
Tables
Figure 1 Unit Dimensions ....................................... 5
Figure 2 Blower Damper Assembly......................... 7
Figure 3 Mounting Instructions ............................. 10
Figure 4 Wall-Mounting Instructions ...................... 11
Figure 5 Wall-Mounting Instructions ...................... 11
Figure 6 Common Wall-Mounting Installations ..... 12
Figure 7 Electric Heat Clearances ........................ 13
Figure 8 Low Voltage Wiring ................................. 14
Figure 9 Fan Blade Setting ................................... 17
Table 1 Electrical Specifications .......................... 4
Table 2 Dimensions of Basic Unit ........................ 5
Table 3 Electric Heat Table .................................. 6
Table 4 Operating Voltage Range........................ 9
Table 5 Thermostat Wire Size ............................. 9
Table 6 Wall Thermostat ...................................... 9
Table 7 Fan Blade Dimensions .......................... 17
Table 8 Suction Line Temperatures ................... 17
Table 9 Indoor Blower Performance .................. 17
Table 10 CFM and ESP ....................................... 17
Table 11 Maximum ESP of Operation
Electric Heat Only ................................. 17
Table 12 Cooling Pressure .................................. 18
Table 13 Optional Accessories ............................ 19
Manual 2100-404D
Page 2 of 19
Getting Other Information and Publications
These publications can help you install the air
conditioner or heat pump. You can usually find 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 ............... ANSI/NFPA 90A
of Air Conditioning and Ventilating Systems
Standard for Warm Air ........................ ANSI/NFPA 90B
Heating and Air Conditioning Systems
Load Calculation for ............................. ACCA Manual J
Residential Winter and Summer Air Conditioning
Duct Design for Residential ................ACCA Manual D
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,
and Air Conditioning Engineers, Inc.
1791 Tullie Circle, N.E.
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) 344-3555
Fax: (617) 984-7057
Manufactured under the following U.S. patent numbers:
5,485,878; 5,301,744; 5,002,116; 4,924,934; 4,875,520; 4,825,936; 4,432,409
Manual 2100-404D
Page 3 of 19
WALL MOUNT GENERAL INFORMATION
AIR CONDITIONER WALL MOUNT MODEL NOMENCLATURE
WA 37 2 — A 10 X X X X X A
MODEL
NUMBER
CAPACITY
25 - 2 Ton
37 - 3 Ton
VENTILATION OPTIONS
X - Barometric Fresh Air Damper (Standard)
B - Blank-off Plate
M - Motorized Fresh Air Damper
V - Commercial Room Ventilator - Motorized with Exhaust
E - Economizer (Internal - Fully Modulating with Exhaust
R - Energy Recovery Ventilator - with Exhaust
NOTE: For 0KW and circuit breakers (230/208 Volt) or pull disconnects (460 Volt) applications, insert 0Z in the KW field of model no.
REVISIONS
VOLTS & PHASE
A - 230/208/60/1
B - 230/208/60/3
C - 460/60/3
TABLE 1 – ELECTRICAL SPECIFICATIONS
KW
FILTER OPTIONS
X - 1-Inch Throwaway
(Standard)
W - 1-Inch Washable
P - 2-Inch Pleated
COLOR OPTIONS
X - Beige (Standard)
1 - White
2 - Mesa Brown
4 - Buckeye Gray
5 - Desert Brown
6 - Dark Bronze
CONTROL
MODULES
(See Spec.
Sheet S3208)
COIL OPTIONS
X - Standard
1 - Phenolic Coated Evaporator
2 - Phenolic Coated Condenser
3 - Phenolic Coated Evaporator
and Condenser
OUTLET OPTIONS
X - Front (Standard)
T - Top on WA30 & WA37 Models
3
detaR
/stloV
sledoM
Z0A-203AW
50A
01A
51A
Z0B-203AW
90B
51B
Z0C-203AW
90C
51C
Z0A-273AW
50A
80A
01A
51A
B-273AW
Z0
60B
90B
51B
Z0C-273AW
60C
90C
21C
51C
1 Maximum size of the time delay fuse or HACR type circuit breaker for protection of field wiring conductors.
2 Based on 75° copper wire. All wiring must conform to the National Electrical Code and all local codes.
3 These "Minimum Circuit Ampacity" values are to be used for sizing the field power conductors. Refer to the National Electric Code
(latest revision), Article 310 for power conductor sizing.
CAUTION: When more than one field 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 three conductors are in a raceway.
sesahP
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3-064
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Manual 2100-404D
Page 4 of 19
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6257.8252.9200.7257.291.9357.2241.991.400.2100.5
TABLE 2
FIGURE 1
UNIT DIMENSIONS
EFGI JKLMNOPQRSTABCB
DIMENSIONS OF BASIC UNIT (NOMINAL)
ylppuSnruteR
thgieH
)H(
htpeD
)D(
htdiW
02.83521.71365.0788.788.7288.3188.7200.0405.8157.5239.7157.
)W(
ledoM
173AW
203AW
FRONT VIEW BACK VIEWSIDE VIEW
Manual 2100-404D
Page 5 of 19
TABLE 3
ELECTRIC HEAT TABLE
sledoM
1-V0421-V8023-V0423-V8023-V064
WKSPMAHUTBSPMAHUTBSPMAHUTBSPMAHUTBSPMAHUTB
0.58.02560,711.81008,21------------------
0.016.14031,432.63006,52------------------
0.515.26002,151.45004,83------------------
.6------------4.41005,025.21063,512.7574,02
0
0.9------------7.12006,037.81030,328.01007,03
0.51------------2.63002,152.13004,830.81002
0.21------------------------4.41059,04
A-203AW
A-273AW
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
ducts.
These instructions explain the recommended method to
install the air cooled self-contained unit and the
electrical wiring connections to the unit.
B-203AW
B-273AW
C-203AW
C-273AW
,15
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 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 2100-404D
Page 6 of 19
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