Bard W12A2-A, Wall Mounted Package Air Conditioners W12A2-A User Manual

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INSTALLATION INSTRUCTIONS

WALL MOUNTED

PACKAGE AIR CONDITIONERS

Model:

W12A2-A

W12A1-K

Bard Manufacturing Company, Inc.

Manual:

2100-509E

 

Bryan, Ohio 43506

 

Supersedes:

2100-509D

 

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

File:

Volume III Tab 16

 

 

Date:

08-20-12

 

 

 

 

 

 

 

 

 

 

Manual

2100-509E

 

 

 

 

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

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

Start Up

 

Requirements: R-410A.............................................

13

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

14

Service Hints............................................................

14

High & Low 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 Table..........................................................

17

Optional Field Installed Accessories.........................

17

Tables

 

 

Table 1

Electric Heat Table....................................

4

Table 2

Electrical Specifications............................

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

Table 8

Optional Accessories..............................

17

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 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: (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, 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

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

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

REVISIONS

 

 

 

 

 

 

 

 

 

 

 

CAPACITY

 

 

 

 

 

 

 

 

 

 

CONTROL

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

MODULES

12 - 1 Ton

 

 

 

 

 

 

 

 

 

 

 

 

E - Low Ambient

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Control

 

AIR

 

VOLTS & PHASE

KW

 

 

 

 

 

 

 

J

- Telecommunication

 

 

 

 

 

 

 

 

 

 

 

 

CONDITIONER

 

 

 

 

 

 

 

 

 

 

 

 

A - 230/208/60/1

00 - No KW

 

 

 

 

 

 

 

COIL OPTIONS

 

 

 

 

 

 

 

 

 

 

 

 

 

K - 115/60/1

02 - 2.2 KW

 

 

 

 

 

 

 

X - Standard Coils

 

 

 

 

 

 

03 - 3.6 KW

 

 

COLOR OPTIONS

 

 

 

 

 

 

 

 

 

 

 

05 - 5.0 KW

 

 

X - Beige

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

4 - Buckeye Gray

 

OUTLET OPTIONS

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

X -

Front

 

 

 

 

 

 

VENTILATION OPTIONS

 

FILTER OPTIONS

 

 

 

 

 

 

 

 

 

 

 

X - Barometric Fresh Air

 

 

 

 

 

 

 

 

 

 

 

 

Damper (Standard)

 

X - 1-Inch Throwaway

 

 

 

 

 

 

 

 

 

 

 

B - Blank-off Plate

 

(Standard)

 

 

 

 

 

 

 

 

 

 

 

E - Economizer (Internal) - Fully

 

P - 2-Inch Pleated

 

 

 

 

 

 

 

Modulating with Exhaust

V - Commercial Ventilator -

Motorized with Exhaust

TABLE 1

ELECTRIC HEAT TABLE

Models

 

 

W12A2-A

 

 

 

W12A1-K

 

 

240V

 

208V

 

120V

KW

A

 

j

A

 

j

A

 

j

 

BTU

 

BTU

 

BTU

 

 

 

 

 

 

 

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

Manual

2100-509E

Page

4 of 17

 

 

FIGURE 1

 

 

 

 

UNIT DIMENSIONS

 

 

 

32.00

 

 

 

 

30.13

 

 

 

 

17.00

 

17.00

 

 

Supply Air

2.25

Supply Air

 

 

5.00

5.00

 

Opening

Opening

 

2.00*

 

 

 

 

5.00*

 

 

 

 

 

Return Air

10.00

 

 

 

Opening

Return Air

 

 

 

10.00

 

 

 

 

 

 

Opening

 

 

 

 

 

Top Rain Flashing

 

 

 

 

Shipping Location

 

 

 

 

Optional Electrical

26.75

 

 

 

Entrance

 

23.75

20.25

 

 

 

 

Side Wall Mounting

 

 

 

 

 

 

 

 

Flanges (Built In)

 

2.50

Back View

 

Back View

 

 

Return air opening is in upper

 

Return air opening is in lower

 

 

field convertible position

 

factory standard position

 

 

31.06

Built-in Rain

 

Hood 4° Pitch

 

 

 

 

Electric Heat

 

 

Heater and Filter

 

 

Access

 

19.72

Ventilation Air

 

 

 

 

Circuit Breaker

 

 

(Optional)

 

 

Electrical

 

 

Entrance

 

 

Low Voltage

 

 

Entrance

 

19.72

18.25

 

 

1.75

Front View

Condenser Airflow

 

 

is Blow Thru

14.63

1.50

Control

Panel

46.00

19.88

Right Side View

( * ) 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 MIS-2608 A allow proper airflow to outdoor condenser coil. Allow 15 inches on left side.

(*) 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.

Manual

2100-509E

Page

5 of 17

TABLE 2

ELECTRICAL HEAT SPECIFICATIONS

SINGLE CIRCUIT

 

Rated Volts

No. Field

j

 

 

 

Maximum

k

k

 

Minimum

Models

and

Power

External Fuse

Field Power

Ground

Circuit

 

Phase

Circuits

or Circuit

Wire Size

Wire Size

 

Ampacity

 

 

 

Breaker

 

 

 

 

 

 

 

 

W12A2-A00

 

1

9

15

14

14

A03

230/208-1

1

20

20

12

12

A05

 

1

28

30

10

10

W12A1-K00

115-1

1

20

30

10

10

K02

1

29

30

10

10

 

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.

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

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