Bard WA372, WA302 User Manual

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WALL MOUNTED

INSTALLATION

PACKAGED

AIR CONDITIONER

 

INSTRUCTIONS

Models: WA302

 

 

WA372

 

 

Bard Manufacturing Company, Inc.

Manual No.:

2100-404D

Bryan, Ohio 43506

Supersedes:

2100-404C

Since 1914...moving ahead just as planned.

File:

Volume III, Tab 16

Date:

08-01-07

 

 

 

 

 

 

 

© Copyright 2002

 

Manual 2100-404D

Page

1 of 19

Contents

Getting Other Information and Publications

 

Start Up

 

For more information,

 

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

15

contact these publishers ..........................................

3

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

15

 

 

Three Phase Scroll Compressor Start Up

 

Wall Mount General Information

 

Information.............................................................

15

Air Conditioner Wall Mount Model Nomenclature .... 4

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

15

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

6

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

15

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

6

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

15

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

7

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

16

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

7

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

16

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

7

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

16

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

7

 

 

 

 

Troubleshooting

 

Installation Instructions

 

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

17

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

8

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

17

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

8

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

17

Top Outlet Only ........................................................

8

Cooling Pressures .................................................

18

Wiring — Main Power ........................................

8 & 9

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

19

Low Voltage Connections ........................................

9

 

 

Wiring — Low Voltage Wiring ..................................

9

 

 

Figures

 

Tables

 

 

 

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

5

Table

1

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

4

Figure 2 Blower Damper Assembly.........................

7

Table

2

Dimensions of Basic Unit ........................

5

Figure 3 Mounting Instructions .............................

10

Table

3

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

6

Figure 4 Wall-Mounting Instructions ......................

11

Table

4

Operating Voltage Range........................

9

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

11

Table

5

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

9

Figure 6 Common Wall-Mounting Installations .....

12

Table

6

Wall Thermostat ......................................

9

Figure 7 Electric Heat Clearances ........................

13

Table

7

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

17

Figure 8 Low Voltage Wiring .................................

14

Table

8

Suction Line Temperatures ...................

17

Figure 9 Fan Blade Setting ...................................

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

 

KW

NUMBER

REVISIONS

 

 

 

CAPACITY

 

VOLTS & PHASE

 

 

25

-

2 Ton

 

A - 230/208/60/1

 

 

37

-

3 Ton

 

B - 230/208/60/3

 

 

 

 

 

 

C - 460/60/3

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

 

CONTROL

 

MODULES

 

(See Spec.

COLOR OPTIONS

Sheet S3208)

X - Beige (Standard)

1

- White

COIL OPTIONS

2

- Mesa Brown

X- Standard

4

- Buckeye Gray

1 - Phenolic Coated Evaporator

5

- Desert Brown

2 - Phenolic Coated Condenser

6

- Dark Bronze

3 - Phenolic Coated Evaporator

 

and Condenser

FILTER OPTIONS

OUTLET OPTIONS

X - 1-Inch Throwaway

X- Front (Standard)

(Standard)

T - Top on WA30 & WA37 Models

W- 1-Inch Washable

 

P - 2-Inch Pleated

 

NOTE: For 0KW and circuit breakers (230/208 Volt) or pull disconnects (460 Volt) applications, insert 0Z in the KW field of model no.

TABLE 1 – ELECTRICAL SPECIFICATIONS

 

 

 

3

1

2

2

3

1

2

2

 

 

 

 

 

 

 

 

 

Maximum

 

 

 

 

 

 

 

 

 

 

 

Minimum

External

Field Power

 

 

 

 

 

 

 

 

 

Fuse

 

 

 

 

No.

 

Maximum

 

 

Circuit

or Ckt.

Wire Size

Ground

 

 

 

External

Field

 

Ampacity

Breaker

 

 

Wire Size

 

Rated

Field

Minimum

Fuse or

Power

Ground

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Volts/

Power

Circuit

Ckt.

Wire

Wire

CKT

CKT

CKT

CKT

CKT

CKT

CKT

CKT

Models

Phases

Circuits

Ampacity

Breaker

Size

Size

A

B

A

B

A

B

A

B

WA302-A0Z

 

1

24

35

8

10

NA

NA

NA

NA

NA

NA

NA

NA

A05

230/208-1

1

31

35

8

10

NA

NA

NA

NA

NA

NA

NA

NA

A10

1

57

60

6

10

NA

NA

NA

NA

NA

NA

NA

NA

A15

 

1 or 2

83

90

4

8

55

26

60

30

4

10

8

10

WA302-B0Z

 

1

17

20

12

12

NA

NA

NA

NA

NA

NA

NA

NA

B09

230/208-3

1

32

35

8

10

NA

NA

NA

NA

NA

NA

NA

NA

B15

 

1

50

50

8

10

NA

NA

NA

NA

NA

NA

NA

NA

WA302-C0Z

 

1

10

15

14

14

NA

NA

NA

NA

NA

NA

NA

NA

C09

460-3

1

17

20

12

12

NA

NA

NA

NA

NA

NA

NA

NA

C15

 

1

26

30

10

10

NA

NA

NA

NA

NA

NA

NA

NA

WA372-A0Z

 

1

28

35

8

10

NA

NA

NA

NA

NA

NA

NA

NA

A05

 

1

32

35

8

10

NA

NA

NA

NA

NA

NA

NA

NA

A08

230/208-1

1

47

50

8

10

NA

NA

NA

NA

NA

NA

NA

NA

A10

 

1

58

60

6

10

NA

NA

NA

NA

NA

NA

NA

NA

A15

 

1 or 2

84

90

4

8

58

26

60

30

6

10

10

10

WA372-B0Z

 

1

20

25

10

10

NA

NA

NA

NA

NA

NA

NA

NA

B06

230/208-3

1

24

25

10

10

NA

NA

NA

NA

NA

NA

NA

NA

B09

1

33

35

8

10

NA

NA

NA

NA

NA

NA

NA

NA

B15

 

1

51

60

6

10

NA

NA

NA

NA

NA

NA

NA

NA

WA372-C0Z

 

1

11

15

14

14

NA

NA

NA

NA

NA

NA

NA

NA

C06

 

1

12

15

14

14

NA

NA

NA

NA

NA

NA

NA

NA

C09

460-3

1

17

20

12

12

NA

NA

NA

NA

NA

NA

NA

NA

C12

 

1

21

25

10

10

NA

NA

NA

NA

NA

NA

NA

NA

C15

 

1

26

30

10

10

NA

NA

NA

NA

NA

NA

NA

NA

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.

3These "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.

Manual

2100-404D

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Page

Manual

19 of 5

404D-2100

TABLE 2

DIMENSIONS OF BASIC UNIT (NOMINAL)

 

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

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

WA302

38.20

17.125

70.563

7.88

27.88

13.88

27.88

40.00

18.50

25.75

17.93

26.75

28.75

29.25

27.00

2.75

39.19

22.75

9.14

4.19

12.00

5.00

WA371

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

FIGURE 1

UNIT DIMENSIONS

FRONT VIEW

SIDE VIEW

BACK VIEW

TABLE 3

ELECTRIC HEAT TABLE

Models

 

WA302-A

 

 

 

WA302-B

 

 

WA302-C

 

WA372-A

 

 

 

WA372-B

 

 

WA372-C

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

240V-1

208V-1

 

240V-3

208V-3

 

460V-3

 

 

 

 

 

 

 

 

 

 

 

 

 

KW

AMPS

BTUH

AMPS

BTUH

 

AMPS

BTUH

AMPS

BTUH

 

AMPS

BTUH

 

 

 

 

 

 

 

 

 

 

 

 

 

5.0

20.8

17,065

18.1

12,800

 

---

---

---

---

 

---

---

 

 

 

 

 

 

 

 

 

 

 

 

 

10.0

41.6

34,130

36.2

25,600

 

---

---

---

---

 

---

---

 

 

 

 

 

 

 

 

 

 

 

 

 

15.0

62.5

51,200

54.1

38,400

 

---

---

---

---

 

---

---

 

 

 

 

 

 

 

 

 

 

 

 

 

6.0

---

---

---

---

 

14.4

20,500

12.5

15,360

 

7.2

20,475

 

 

 

 

 

 

 

 

 

 

 

 

 

9.0

---

---

---

---

 

21.7

30,600

18.7

23,030

 

10.8

30,700

 

 

 

 

 

 

 

 

 

 

 

 

 

15.0

---

---

---

---

 

36.2

51,200

31.2

38,400

 

18.0

51,200

 

 

 

 

 

 

 

 

 

 

 

 

 

12.0

---

---

---

---

 

---

---

---

---

 

14.4

40,950

 

 

 

 

 

 

 

 

 

 

 

 

 

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 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

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