Bard WA482, WA421, WA602 User Manual

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INSTALLATION INSTRUCTIONS

WALL MOUNTED

PACKAGE AIR CONDITIONERS

MODELS

WA421

WA482

WA602

Bard Manufacturing Company

Manual :

2100-218I

Bryan, Ohio 43506

Supersedes:

2100-218H

File:

Volume III Tab 16

 

Since 1914...Moving ahead, just

Date:

04-19-99

as planned.

 

 

© Copyright 1999

Contents

Getting Other Information and Publications

.......... 1

Wall Mount General Information .............................

2

Heat Pump Wall Mount Model Nomenclature ..........

2

Shipping Damage ....................................................

5

General ................................................................

5

Duct Work ................................................................

5

Filters ................................................................

6

Fresh Air Intake ........................................................

6

Condensate Drain ....................................................

6

Installation Instructions ...........................................

7

Wall Mounting Information .......................................

7

Mounting the Unit .....................................................

7

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

12

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

12

Figures

 

 

Figure 1

Unit Dimensions ......................................

3

Figure 2

Fresh Air Damper Assembly ...................

6

Figure 3

Mounting Instructions ...............................

8

Figure 4

Electric Heat Clearance ..........................

9

Figure 5 Wall Mounting Instructions .....................

10

Figure 5 Wall Mounting Instructions .....................

10

Figure 7

Common Wall Mounting Installations ......

11

Figure 8

Unit 24V Terminal Board .......................

13

Figure 9

Starting Procedure ................................

14

Figure 10

Fan Blade Setting ..................................

17

Start Up ...................................................................

14

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

14

Crankcase Heaters ................................................

14

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

14

Three Phase Scroll Compressor Start Up ..............

14

Condenser Fan Operation ......................................

14

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

15

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

15

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

15

Adjustments ...........................................................

15

Phase Monitor ........................................................

16

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

16

Troubleshooting .....................................................

17

Fan Blade Setting Dimensions ...............................

17

Removal of Fan Shroud .........................................

17

Refrigerant Charge ................................................

17

Pressure Table .......................................................

18

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

19

Tables

 

 

Table 1

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

2

Table 2

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

4

Table 3

Thermostat Wire Size ...........................

12

Table 4

Wall thermostat and Subbase

 

 

Combinations ........................................

12

Table 5

Fan Blade Dimensions ..........................

17

Table 6

Refrigerant Charge ...............................

17

Table 7

Indoor Blower Performance ..................

17

Table 8

Recommended Air Flow ........................

18

Table 9

Maximum EXP Electric Heat Only ........

18

Table 10

Pressure Table ......................................

18

Table 11

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

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 Ave. N.W.

 

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, Refrigeration

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; 5,301,777; 5,002,116; 4,924,934; 4,875,520; 4,825,936; 4,432,409

Manual 2100-218

Page 1

WALL MOUNT GENERAL INFORMATION

HEAT PUMP WALL MOUNT MODEL NOMENCLATURE

MODEL NUMBER

WA 42 1 – A 10 X N X X X A

CONTROL MODULES

(See Chart Below)

CAPACITY

 

 

 

 

 

COIL OPTIONS

42

- 3 1/2 Ton

 

 

 

 

 

 

 

 

 

 

X - Standard

48

- 4 Ton

REVISIONS

 

 

 

 

 

 

 

 

1

- Phenolic Coated Evaporator

60

- 5 Ton

 

 

 

 

 

 

 

COLOR OPTIONS

 

 

 

2

- Phenolic Coated Condenser

 

 

 

 

 

 

 

 

 

 

X - Beige (Standard)

3

- Phenolic Coated Evaporator

 

 

KW

 

 

1 - White

 

and Condenser

VOLTS & PHASE

 

 

2 - Mesa Tan

 

 

VENTILATION OPTIONS

 

4 - Buckeye Gray

OUTLET OPTIONS

A - 230/208/60/1

 

X - Barometric Fresh Air Damper (Standard)

5

- Desert Brown

X - Front (Standard)

B - 230/208/60/3

B -

Blank-off Plate

 

6

- Dark Bronze

 

 

C - 460/60/3

 

 

 

M - Motorized Fresh Air Damper

 

 

 

 

 

 

 

 

 

 

 

 

 

 

V -

Commercial Ventilator -

 

 

 

 

 

 

 

 

Motorized with Exhaust

FILTER OPTIONS

 

 

 

 

E -

Economizer (Internal) - Fully

 

 

 

 

X - One Inch Throwaway (Standard)

 

 

 

 

 

 

Modulating with Exhaust

R - Energy Recovery Ventilator -

W - One Inch Washable

Motorized with Exhaust

P - Two Inch Pleated

NOTE: All vent options are without exhaust capability. May require separate field supplied barometric relief in building.

TABLE 1

ELECTRIC HEAT TABLE

 

 

WA421-A

 

 

WA421-B

 

WA421-C

Models

 

WA482-A

 

 

WA482-B

 

WA482-C

 

 

WA602-A

 

 

WA602-B

 

WA602-C

 

 

 

 

 

 

 

 

 

 

 

 

240-1

208-1

240-3

208-3

460-3

 

 

 

 

 

 

 

 

 

 

 

KW

A

BTU

A

BTU

A

BTU

A

BTU

A

BTU

 

 

 

 

 

 

 

 

 

 

 

5

20.8

17050

18.1

12800

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

9

 

 

 

 

21.7

30600

18.7

23030

10.8

30700

 

 

 

 

 

 

 

 

 

 

 

10

41.6

34130

36.2

25600

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

15

62.5

51200

54.0

38400

36.2

51200

31.2

38400

17.3

47000

 

 

 

 

 

 

 

 

 

 

 

18

 

 

 

 

43.3

61430

37.5

46100

 

 

 

 

 

 

 

 

 

 

 

 

 

20

83.2

68260

72.1

51200

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Manual 2100-218

Page 2

Page

Manual

3

218-2100

 

FIGURE 1

UNIT DIMENSIONS

 

Width

Depth

Height

Supply

 

 

Return

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Model

(W)

(D)

(H)

A

 

 

 

B

 

 

C

 

B

E

F

G

I

J

K

 

 

 

L

M

N

O

 

 

P

Q

R

S

T

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

WA42

42.075

22.432

84.875

9.88

29.88

15.88

29.88

43.88

19.10

31.66

30.00

32.68

26.94

34.69

32.43

3.37

42.88

23.88

10.00

1.44

16.00

1.88

WA48

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

FRONT VIEW

 

 

 

SIDE VIEW

BACK VIEW

 

* Optional top outlet (factory installed only) for WA30 and WA36 models only.

 

 

 

 

 

 

 

 

 

 

MIS-1262

 

 

 

 

 

 

 

 

 

 

 

 

TABLE 2

ELECTRICAL SPECIFICATIONS

SINGLE CIRCUIT

DUAL CIRCUIT

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Maximum

 

 

 

Maximum

 

 

 

 

 

 

 

 

 

 

Minimum

External Fuse

 

 

 

 

 

External

Field

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Circuit

 

 

Field Power

Ground

 

Rated

Field

Minimum

Fuse or

Power

Ground

 

 

 

Ampacity

 

 

Wire Size

Wire Size

 

Volts &

Power

Circuit

Circuit

Wire

Wire

 

 

 

 

 

 

 

 

 

 

 

 

Model

Phase

Circuits

Ampacity

Breaker

Size

Size

CKT A

CKT B

CKT A

CKT B

CKT A

CKT B

CKT A

 

CKT B

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

WA421-A00, A0Z

 

1

33

50

8

10

N/A

N/A

N/A

N/A

N/A

N/A

N/A

 

N/A

A05

 

1

33

50

8

10

N/A

N/A

N/A

N/A

N/A

N/A

N/A

 

N/A

A10

230/208-1

1

59

60

6

10

N/A

N/A

N/A

N/A

N/A

N/A

N/A

 

N/A

A15

 

1 or 2

85

90

4

8

56

26

60

30

6

10

10

 

10

A20

 

1 or 2

110

110

2

6

56

52

60

60

6

6

10

 

10

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

WA421-B00, B0Z

 

1

24

35

8

10

N/A

N/A

N/A

N/A

N/A

N/A

N/A

 

N/A

B09

230/208-3

1

34

35

8

10

N/A

N/A

N/A

N/A

N/A

N/A

N/A

 

N/A

B15

1

52

50

6

10

N/A

N/A

N/A

N/A

N/A

N/A

N/A

 

N/A

 

 

B18

 

1

60

60

6

10

N/A

N/A

N/A

N/A

N/A

N/A

N/A

 

N/A

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

WA421-C00, C0Z

 

1

12

15

14

14

N/A

N/A

N/A

N/A

N/A

N/A

N/A

 

N/A

C09

460-3

1

17

20

12

12

N/A

N/A

N/A

N/A

N/A

N/A

N/A

 

N/A

C15

 

1

26

30

10

10

N/A

N/A

N/A

N/A

N/A

N/A

N/A

 

N/A

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

WA482-A00, A0Z

 

1

38

50

8

10

N/A

N/A

N/A

N/A

N/A

N/A

N/A

 

N/A

A05

 

1

38

50

8

10

N/A

N/A

N/A

N/A

N/A

N/A

N/A

 

N/A

A10

230/208-1

1

59

60

6

10

N/A

N/A

N/A

N/A

N/A

N/A

N/A

 

N/A

A15

 

1 or 2

85

90

4

8

59

26

60

30

6

10

10

 

10

A20

 

1 or 2

110

110

2

6

59

52

60

60

6

6

10

 

10

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

WA482-B00, B0Z

 

1

26

35

8

10

N/A

N/A

N/A

N/A

N/A

N/A

N/A

 

N/A

B09

230/208-3

1

34

35

8

10

N/A

N/A

N/A

N/A

N/A

N/A

N/A

 

N/A

B15

1

52

60

6

10

N/A

N/A

N/A

N/A

N/A

N/A

N/A

 

N/A

 

 

B18

 

1

60

60

6

10

N/A

N/A

N/A

N/A

N/A

N/A

N/A

 

N/A

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

WA182-C00, C0Z

 

1

13

15

14

14

N/A

N/A

N/A

N/A

N/A

N/A

N/A

 

N/A

C09

460-3

1

17

20

12

12

N/A

N/A

N/A

N/A

N/A

N/A

N/A

 

N/A

C15

 

1

26

30

10

10

N/A

N/A

N/A

N/A

N/A

N/A

N/A

 

N/A

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

WA602-A00, A0Z

 

1

44

60

8

10

N/A

N/A

N/A

N/A

N/A

N/A

N/A

 

N/A

A05

 

1

44

60

8

10

N/A

N/A

N/A

N/A

N/A

N/A

N/A

 

N/A

A10

230/208-1

1

55

60

6

10

N/A

N/A

N/A

N/A

N/A

N/A

N/A

 

N/A

A15

 

1 or 2

85

90

4

8

59

26

60

30

6

10

10

 

10

A20

 

1 or 2

110

110

2

6

59

52

60

60

6

6

10

 

10

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

WA602-B00, B0Z

 

1

32

45

8

10

N/A

N/A

N/A

N/A

N/A

N/A

N/A

 

N/A

B09

230/208-3

1

34

45

8

10

N/A

N/A

N/A

N/A

N/A

N/A

N/A

 

N/A

B15

1

52

60

6

10

N/A

N/A

N/A

N/A

N/A

N/A

N/A

 

N/A

 

 

B18

 

1

60

60

6

10

N/A

N/A

N/A

N/A

N/A

N/A

N/A

 

N/A

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

WA302-C00, C0Z

 

1

16

20

12

12

N/A

N/A

N/A

N/A

N/A

N/A

N/A

 

N/A

C09

460-3

1

17

20

12

12

N/A

N/A

N/A

N/A

N/A

N/A

N/A

 

N/A

C15

 

1

26

30

10

10

N/A

N/A

N/A

N/A

N/A

N/A

N/A

 

N/A

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

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 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 3 conductors are in a raceway.

Manual 2100-218

Page 4

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.

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 1 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.

DUCT WORK

All duct work, supply and return, must be properly sized for the design air flow 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 10 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.

A 1/4 inch clearance to combustible material for the first three feet of duct attached to the outlet air frame is required. See Wall Mounting Instructions and Figures 3 and 4 for further details.

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. A metallic return air grille is required with installations not requiring a return air duct. The spacing between louvers on the grille shall not be larger than 5/8 inch.

Any grille that meets with 5/8 inch louver criteria may be used. It is recommended that Bard Return Air Grille Kit RG2 through RG5 or RFG2 through RFG5 be installed when no return duct is used. Contact distributor or factory for ordering information. If using a return air filter grille, filters must be of sufficient 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.

Manual 2100-218

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