Bard WA121 User Manual

INSTALLATION INSTRUCTIONS

WALL MOUNTED

PACKAGE AIR CONDITIONERS

Model:

WA121

Bard Manufacturing Company, Inc.
Bryan, Ohio 43506

Since 1914....Moving ahead just as planned.

Manual : 2100-234
Supersedes: 2100-234H
File: Volume III Tab 16
Date: 08-01-07

I

© Copyright 2002

Manual 2100-234I
Page 1 of 17

CONTENTS

Getting Other Informations and Publications 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

Wiring – Main Power .............................................. 12

Wiring – Low Voltage Wiring .................................. 12

Figures

Figure 1 Unit Dimensions ...................................... 5

Figure 2 Blower Damper Assembly....................... 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 Low Voltage Wiring ............................... 13

Figure 8 Fan Blade Setting Dimensions ............. 16

Start Up

Important Installer Note .......................................... 14

Service Hints .......................................................... 14

High Pressure Switch ............................................. 14

Sequence of Operation ........................................... 14

Compressor Control Module ................................... 14

Adjustments ............................................................ 15

Pressure Service Ports ........................................... 15

Troubleshooting

Fan Blade Setting Dimension ................................. 16

Refrigerant Charge ................................................. 16

Pressure Tables ...................................................... 17

Option Field Installed Accessories .......................... 17

Tables

Table 1 Electric Heat Table .................................. 4

Table 2 Electrical Specifications .......................... 6

Table 3 Thermostat Wire Size ........................... 12

Table 4 Wall Thermostats .................................. 12

Table 5 Fan Blade Dimensions .......................... 16

Table 6 Suction Line Temperatures ................... 16

Table 8 Recommended Operating Ranges ....... 16

Table 7 Indoor Blower Performance .................. 16

Table 9 Maximum ESP of Operation

Electric Heat Only ................................. 16

Table 10 Pressure Table - Cooling ...................... 17

Table 11 Optional Accessories ............................ 17

Manual 2100-234I
Page 2 of 17

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 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: [phone]
Fax: [phone]

ANSI American National Standards Institute

11 West Street, 13th Floor
New York, NY 10036
Telephone: [phone]
Fax: [phone]

ASHRAE American Society of Heating, Refrigerating

and Air Conditioning Engineers, Inc.

1791 Tullie Circle, NE
Atlanta, GA 30329-2305
Telephone: [phone]
Fax: [phone]

NFPA National Fire Protection Association

Batterymarch Park
P.O. Box 9101
Quincy, MA 02269-9901
Telephone: [phone]
Fax: [phone]

Manufactured under the following U.S. patent numbers:

5,485,878; and 5,301,744

Manual 2100-234I
Page 3 of 17

WALL MOUNT GENERAL INFORMATION

AIR CONDITIONER WALL MOUNT MODEL NOMENCLATURE

MODEL NUMBER

CAPACITY

12 - 1 Ton

REVISIONS

VOLTS & PHASE

A - 230/208/60/1
K - 115/60/1

WA 12 1 – A 00 X X X X X J

COLOR OPTIONS

KW

00 - No KW
02 - 2.2 KW
03 - 3.6 KW
05 - 5.0 KW

VENTILATION OPTIONS

X - Barometric Fresh Air

Damper (Standard)
B - Blank-off Plate
E - Economizer (Internal) - Fully

Modulating with Exhaust

TABLE 1

ELECTRIC HEAT TABLE

X - Beige
4 - Buckeye Gray

FILTER OPTIONS

X - One Inch Throwaway

(Standard)

P - Two Inch Pleated

CONTROL MODULES

E - Low Ambient Control
J - Telecommunication

COIL OPTIONS

X - Standard Coils

OUTLET OPTIONS

X - Front

sledoMA-121AWK-121AWG-121AW

WKA1UTBA1UTBA1UTBA1UTBA1UTB

203.81589,70.01566,81.9003,7

300.51067,210.31507,90.51067,218.31008,01

508.02045,711.81572,31

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Manual 2100-234I
Page 4 of 17

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FIGURE 1

UNIT DIMENSIONS

FACTORY BUILT AT 5 INCHES

Manual 2100-234I
Page 5 of 17

TABLE 2

ELECTRICAL HEAT SPECIFICATIONS

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3

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00A-121AW
30A
50A

00K-121AW
20K

00G-121AW
20G
30G

Maximum size of the time delay fuse or HACR type circuit breaker for protection of field 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 field power conductors. Refer to the
National Electrical 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 3 conductors are in a raceway.

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41
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41
41
21

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 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 2100-234I
Page 6 of 17