Bard PA13361-A, PA13361-B, PA13241-A, PA13301-A User Manual

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INSTALLATION INSTRUCTIONS

SINGLE PACKAGE

AIR CONDITIONERS

MODELS

PA13241-A PA13301-A

PA13361-A PA13361-B

PA13422-A PA13422-B

PA13422-C PA13482-A

PA13482-B PA13482-C

PA13602-A PA13602-B

PA13602-C

Bard Manufacturing Company, Inc.

Manual :

2100-467D

Bryan, Ohio 43506

Supersedes:

2100-467C

Since 1914 . . . Moving ahead just as planned.

File:

Volume II Tab 10

Date:

08-12-08

 

© Copyright 2006

Manual

2100-467D

Page

1 of 25

CONTENTS

Getting Other Informations and Publications

........ 3

General Instructions

 

Important ................................................................

4

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

4

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

4

Field Installed Heater Packages (Optional) .............

4

Installation

 

Location ................................................................

9

Slab Mounting..........................................................

9

Typical Installations .........................................

9 & 12

Condensate Drain Trap .........................................

12

Air Filters ..............................................................

12

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

13

Wiring – 24V Low Voltage Control Circuit .............

13

Transformer Taps ...................................................

13

Thermostats ...........................................................

13

Figures

 

 

Figure 1

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

8

Figure 2

Slab Mounting at Ground Level ............

10

Figure 3

Airflow and Service Access

 

 

Clearances ............................................

10

Figure 4

Elevated Mounting Platform ...................

11

Figure 5

Condensate Drain Trap .........................

12

Figure 6

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

14

Figure 7

Low Ambient Control Wiring .................

17

Figure 8

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

18

Figure 9

Brazing Diagram ...................................

21

Figure 10

Control Disassembly .............................

23

Figure 11

Winding Test .........................................

23

Figure 12

Drip Loop ..............................................

23

Figure 13

Motor Connections ................................

24

Figure 14

Wiring (Connections/Voltage) ...............

25

Start Up and Operation

 

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

15

Topping Off System Charge...................................

15

Safety Practices.....................................................

15

Start Up Notes .......................................................

15

Three Phase Scroll Compressor Start Up

 

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

16

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

16

Indoor Blower Motor ..............................................

16

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

16 & 17

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

17

Low Ambient Control .............................................

17

Service and Troubleshooting

 

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

18

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

18

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

18

Fan Blade Settings ................................................

18

Pressure Tables .............................................

19 & 20

Suction and Discharge Tube Brazing ....................

21

Troubleshooting ECM Blower Motors .............

22-25

Tables

 

 

 

Table

1

Rated CFM & ESP ..................................

4

Table

2

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

5

Table

3

Opt. Field Installed Heater Packages .....

6

Table

4

Opt. Field Installed Elec. Heater .............

7

Table

5

Filter Requirements & Sizes .................

12

Table

6

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

13

Table

7

Wall Thermostats ..................................

13

Table

8

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

18

Table

9

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

18

Table

10

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

19

Table

11

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

20

Manual

2100-467D

Page

2 of 25

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, 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

Manual

2100-467D

Page

3 of 25

GENERAL INSTRUCTIONS

IMPORTANT

The equipment covered in this manual is to be installed by trained, experienced service and installation technicians. All duct work, supply and return ducts, must be properly sized for the design airflow requirement of the equipment. 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.

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.

FIELD INSTALLED HEATER PACKAGES (OPTIONAL)

These packaged air conditioners are manufactured without supplementary electric heaters. Supplementary heaters are available for simple, fast field installation.

A separate power circuit is required for the supplementary heaters.

IMPORTANT: Refer to Table 1 when designing duct work for maximum available static pressure with heater installed.

Refer to data shown in Table 3 and 4 for proper application information on all available heater combinations and what units they can be used with. It also shows the applicable circuit ampacities, fuse size, and wire size for each heater combination.

GENERAL

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 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.

TABLE 1

RATED CFM AND EXTERNAL STATIC

PRESSURE (ESP)

Model

Rated

Recommended

Rated

Max.

No.

CFM

Airflow Range

ESP

ESP

 

 

 

 

 

PA1324

800

Note

0.18

0.50

 

 

 

 

 

PA1330

1000

Note

0.23

0.50

 

 

 

 

 

PA1336

1100

Note

0.23

0.50

 

 

 

 

 

PA1342

1450

Note

0.23

0.50

 

 

 

 

 

PA1348

1550

Note

0.28

0.50

 

 

 

 

 

PA1360

1750

Note

0.28

0.50

 

 

 

 

 

NOTE: ECM motors provide rated CFM up to 0.50 ESP

Manual

2100-467D

Page

4 of 25

TABLE 2

ELECTRICAL SPECIFICATIONS

Model

PA13241-A

PA13301-A

PA13361-A

PA13361-B

PA13422-A

PA13422-B

PA13422-C

PA13482-A

PA13482-B

PA13482-C

PA13602-A

PA13602-B

PA13602-C

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Electric Rating –

230/208-60-1

230/208-60-1

230/208-60-1

230/208-60-3

230/208-60-1

230/208-60-3

460-60-3

230/208-60-1

230/208-60-3

460-60-3

230/208-60-1

230/208-60-3

460-60-3

60 Hz – Circuit A

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Operating Voltage Range

197 - 253

197 - 253

197 - 253

187 - 253

197 - 253

187 - 253

414-506

197 - 253

187 - 253

414-506

197 - 253

187 - 253

414-506

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Minimum Circuit Ampacity

15

18

24

16

33

23

12

33

29

14

39

26

17

 

 

 

 

 

 

 

 

 

 

 

 

 

 

BCSC

9

11

15

10

21

15

8

22

14

8

26

16

9

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Field Wire Size *

12

10

8

12

10

10

14

8

10

12

8

10

10

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Ground Wire Size

12

10

8

12

10

10

14

8

10

14

8

10

12

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Delay Fuse – Max. **

20

25

35

20

50

35

15

50

40

20

60

40

25

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Total unit Amps – 230/208

10.8/11.8

13.3/14.8

16.4/18.4

17.0/13.3

16.2/18.1

14.1/15.4

10.4

23.0/24.7

16.9/18.0

10.7

25.3/28.9

17.7/19.9

11.9

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Compressor – Circuit A

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Compressor Type

Recip.

Recip.

Recip.

Recip.

Scroll

Scroll

Scroll

Scroll

Scroll

Scroll

Scroll

Scroll

Scroll

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Volts

230/208

230/208

230/208

230/208

230/208

230/208

460

230/208

230/208

460

230/208

230/208

460

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Rated Load Amps

7.5/8.5

9.5/11

12/14

7.6/8.9

11.8/13.7

8.3/9.6

7.7

17/18.7

10.9/12

7.7

19.3/22.9

11.7/13.9

8.6

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Lock Rotor Amps

48/48

57/57

74/74

75/75

115/115

115/115

50

117/117

83.1/83.1

50

134/134

110/110

52

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Fan Motor and Condenser

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Fan Motor – HP/RPM

1/6 - 825

1/6 - 825

1/6 - 825

1/6 - 825

1/4 - 825

1/4 - 825

1/4 - 825

1/4 - 825

1/4 - 825

1/4 - 825

1/4 - 825

1/4 - 825

1/4 - 825

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Fan Motor Amps

1.1

1.1

1.1

1.1

1.5

1.5

1.5

1.5

1.5

1.5

1.5

1.5

1.5

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Fan – Dia./CFM

24"/2700

24"/2600

24"/2600

24"/2600

24"/3400

24"/3400

24"/3400

24"/3400

24"/3400

24"/3400

24"/3400

24"/3400

24"/3400

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Motor and Evaporator

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Blower Motor – HP/RPM *

1/3 - VS

1/2 - VS

1/2 - VS

1/2 - VS

1/2 - VS

1/2 - VS

1/2 - VS

3/4 - VS

3/4 - VS

3/4 - VS

3/4 - VS

3/4 - VS

3/4 - VS

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Blower Motor – Amps

2.2

2.7

3.3

3.3

3.9

3.9

3.9

4.5

4.5

4.5

5.0

5.0

5.0

 

 

 

 

 

 

 

 

 

 

 

 

 

 

CFM Cooling

800

1000

1150

1150

1450

1450

1450

1550

1550

1550

1750

1750

1750

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Charge (R-410 oz.)

75

85

120

120

160

160

160

160

160

160

160

160

160

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Shipping Weight (pounds)

360

410

410

410

440

440

490

440

440

500

450

450

500

 

 

 

 

 

 

 

 

 

 

 

 

 

 

* VS = Variable Speed Programmable Motor

Page

Manual

25 of 5

467D-2100

Page

Manual

25 of 6

467D-2100

TABLE 3

OPTIONAL FIELD INSTALLED HEATER PACKAGES

ONLY TO BE USED WITH THE MODELS INDICATED

Heater Package

Volts &

 

 

 

 

 

 

 

 

 

 

 

 

 

Model

Phase

PA13241-A

PA13301-A

PA13361-A

PA13361-B

PA13422-A

PA13422-B

PA13422-C

PA13482-A

PA13482-B

PA13482-C

PA13602-A

PA13602-B

PA13602-C

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

EHP313-A05

240/208-1

X

X

X

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

EHP313-A10

240/208-1

X

X

X

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

EHP313-A15

240/208-1

 

X

X

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

EHP313-B09

240/208-3

 

 

 

X

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

EHP313-B15

240/208-3

 

 

 

X

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

EHP513-A05

240/208-1

 

 

 

 

X

 

 

X

 

 

X

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

EHP513-A10

240/208-1

 

 

 

 

X

 

 

X

 

 

X

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

EHP513-A15

240/208-1

 

 

 

 

X

 

 

X

 

 

X

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

EHP513-B09

240/208-3

 

 

 

 

 

X

 

 

X

 

 

X

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

EHP513-B15

240/208-3

 

 

 

 

 

X

 

 

X

 

 

X

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

EHP513-C09

460-3

 

 

 

 

 

 

X

 

 

X

 

 

X

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

EHP513-C15

460-3

 

 

 

 

 

 

X

 

 

X

 

 

X

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Page

Manual

25 of 7

467D-2100

TABLE 4

OPTIONAL FIELD INSTALLED ELECTRIC HEATER TABLE

 

 

Htr. KW & Capacity

Htr. KW & Capacity

 

 

 

 

Circuit B

 

 

 

 

@ 240 Volts

@ 208 Volts

 

Heater

 

 

 

 

Heater

 

240/208V

 

 

 

 

 

Unit Volts

 

 

 

 

Internal

 

 

 

 

 

Package

 

 

 

 

Htr.

 

3

1

2

2

Phases

 

 

 

 

Circuit

 

 

 

 

 

No. Field

Min.

Max. Over

Field

 

Model No.

KW

BTUH

KW

BTUH

Amps

 

 

Breaker

Circuits

Circuit

Current

Power

Ground

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Ampacity

Protection

Wiring

Wire Size

 

 

 

 

 

 

 

 

 

 

 

 

 

EHP313-A05

240/208-1

5

17,100

3.75

12,800

20.8/18.1

 

1

26/23

30/25

10/10

10

 

 

 

 

 

 

 

 

 

 

 

 

 

EHP313-A10

240/208-1

10

34,100

7.50

26,000

41.6/36.2

30/60

1

53/46

60/50

6/8

10

 

 

 

 

 

 

 

 

 

 

 

 

 

EHP313-A15

240/208-1

15

51,200

11.25

38,400

62.5/54.1

 

1

79/68

80/70

4/4

8

 

 

 

 

 

 

 

 

 

 

 

 

 

EHP513-A05

240/208-1

5

17,100

3.75

12,800

20.8/18.1

 

1

26/23

30/25

10/10

10

 

 

 

 

 

 

 

 

 

 

 

 

 

EHP513-A10

240/208-1

10

34,100

7.50

26,000

41.6/36.2

30/60

1

53/46

60/50

6/8

10

 

 

 

 

 

 

 

 

 

 

 

 

 

EHP513-A15

240/208-1

15

51,200

11.25

38,400

62.5/54.1

 

1

79/68

80/70

4/4

8

 

 

 

 

 

 

 

 

 

 

 

 

 

EHP313-B09

240/208-3

9

30,700

6.75

23,000

21.7/18.7

None

1

28/24

30/25

10/10

10

 

 

 

 

 

 

 

 

 

 

 

 

EHP313-B15

240/208-3

15

51,200

11.25

38,400

36.2/31.2

1

46/39

50/40

8/8

10

 

 

 

 

 

 

 

 

 

 

 

 

 

 

EHP513-B09

240/208-3

9

30,700

6.75

23,000

21.7/18.7

None

1

28/24

30/25

10/10

10

 

 

 

 

 

 

 

 

 

 

 

 

EHP513-B15

240/208-3

15

51,200

11.25

38,400

36.2/31.2

1

46/39

50/40

8/8

10

 

 

 

 

 

 

 

 

 

 

 

 

 

 

EHP513-C09

480-3

9

30,700

 

 

10.8

None

1

14

15

14

14

 

 

 

 

 

 

 

 

 

 

 

 

EHP513-C15

480-3

15

51,200

 

 

18

1

28

30

10

12

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

1Maximum size of the time delay fuse or HACR circuit breaker for protection of field wiring devices.

2Based on wire suitable for 75°C. Other wiring materials must be rated for marked “Minimum Circuit Ampacity” or greater. Based on 75°C copper wire. All wiring must conform to the National Electric 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.

IMPORTANT: While this electrical data is presented as a guide, it is important to electrically connect properly sized fuses and conductor wires in accordance with the National Electrical Code and all existing local codes.

FIGURE 1

DIMENSIONS OF UNITS

W

L

D

Compressor

access door

Control panel door

High voltage knockout

Low voltage knockout

Heater package knockout

Heater package access panel

Drain access

F

H

Blower motor

 

access door

47 11/16"

G

Condenser air intake grille

A

E

B

Supply opening

C

Return opening

Condenser fan

Condenser air intake grille

Unit Dimension Chart

 

Unit

 

Supply Size

Return Size

Unit Overall Dimensions

 

Unit General Dimensions

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

A

C

B

C

H (height)

L (length)

W (width)

D

 

E

F

 

G

 

 

 

 

 

PA/PH1324,1330,1336

 

5.875

32.875

13.875

32.875

26.25

53.25

38.125

23.25

 

1.125

1.375

 

35.625

PA/PH1342,1348,1360

 

9.875

37.875

15.875

37.875

33.25

55.25

42.375

30.25

 

1.5

2.375

 

38.125

 

 

 

 

 

 

 

 

 

 

 

 

 

 

MIS-2142

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Manual

2100-467D

 

 

 

 

 

 

 

 

 

 

 

 

 

Page

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INSTALLATION

LOCATION

GENERAL

The unit must be located outside, or in a well ventilated area. It must not be in the space being heated or cooled. A sound absorbing material should be considered if the unit is to be installed in such a position or location that might cause transmission of sound or vibration to the living area or adjacent buildings.

SLAB MOUNTING

A minimum of 24 inches should be provided between the coil inlet and any building surfaces. Provide a minimum of three feet clearance on the service access side of the unit. See Figure 2.

TYPICAL INSTALLATIONS

1.ROOF MOUNTED – The unit is mounted on a sturdy base on the roof of the building. Return air to the unit is brought through a single return grille (grilles with built-in filters are best since they enable easy access for filter changing). Return air ducts are attached to the lower section of the front panel. Supply air is brought from the unit to attic duct work or to a furred down hall. Supply air duct is attached to the top of the front panel.

CAUTION: All outdoor duct work must be thoroughly insulated and weatherproofed. All attic duct work must be thoroughly insulated. Two inch thick insulation with suitable vapor barrier is recommended for both outdoor and attic runs.

In roof top installation, as in all installations, the air conditioner must be level from side to side. However, the unit should have a pitch along the length to assure complete external drainage of precipitation and of defrost condensate.

2.CRAWL SPACE – Duct work installed in crawl space must be well insulated and provided with a vapor barrier. In addition, the crawl space must be thoroughly ventilated and provided with a good vapor barrier as a ground cover. It is most desirable to install the unit will be outdoors rather than inside the crawl space, so that it will be readily accessible for service.

3.SLAB MOUNTED AT GROUND LEVEL – This type installation is ideal for homes with a slab floor construction where a roof mounted unit is not desired. The supply and return duct work can be run through a furred closet space.

4.THROUGH THE WALL – This type installation requires a suitable framework to be fabricated capable of withstanding the unit weight. Normally the unit will be insulated so as to minimize supply and return duct work.

Manual

2100-467D

Page

9 of 25

FIGURE 2

SLAB MOUNTING AT GROUND LEVEL

 

The distance between

Air Outlet

Side

 

View

 

 

1 inch clearance

outside wall and unit

 

 

 

varies with installation

 

 

between duct and

 

 

requirements.

 

Package Unit

any combustible

 

material if distance

 

 

 

between outside

Supply Duct

 

 

wall and unit is less

 

 

than 3 feet (needed

 

 

 

on electric heat

 

 

Mounting Slab

units only).

 

 

 

 

Return Duct

 

 

 

 

 

1/4 inch per foot

 

 

 

slope away

 

 

 

from building

Building

Ground Level

FIGURE 3

AIRFLOW AND SERVICE ACCESS CLEARANCES

 

 

 

 

 

 

 

 

and Return Ducts

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Building

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Supply

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Nearest Structure

 

Control Panel

 

Compressor

Top

 

Heater Package

 

View

 

Access

36" min.

Access

 

Access

 

 

Heater Package

Control Panel

 

 

24" min.

 

 

 

 

Comp-

StructureNearest

 

 

 

Inlet

 

 

 

ressor

 

 

 

 

 

Blower

 

 

 

Air

 

and

 

 

 

 

Blower Motor

 

 

 

Condenser fan

 

 

 

 

 

 

and motor access

Blower Service

 

 

from top.

24" min.

Leave 60" min.

Access

above fan.

 

Air Inlet

 

 

 

 

 

Nearest Structure

MIS-2143

 

 

 

 

 

Manual

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Page

10 of 25

48" min.

48" min.

FIGURE 4

ELEVATED MOUNTING PLATFORM

* 12" min. if in 32°F or lower climate

Poured concrete, brick, or block

* 12" min. if in 32°F or lower climate

Metal frame

Platform can be as shown or solid

Both legs must rest on surface of platform

Both legs must rest

on surface of platform

MIS-2144

* AS REQUIRED

Manual

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Page

11 of 25

5.OTHER INSTALLATIONS – Many other installations are possible with the packaged air conditioner. No matter what the installation, always consider the following facts:

A.Insure that the discharge air is not obstructed in any way so as to cause operation difficulties.

B.The indoor coil drain pan is equipped with a coupling that must be piped through a condensate drain trap to a suitable drain.

C.Always mount the unit is such a position that it may be easily reached for servicing and maintenance.

D.Insure that the unit is clear so that proper air flow over the outdoor coil will be maintained.

If this unit is operated in cooling below a 55° outdoor ambient temperature, the installation of low ambient controls (CMA-28) to unit is required.

CONDENSATE DRAIN TRAP

It is very important to provide a trap in the condensate drain line to allow a positive liquid seal in the line and assure correct drainage from the coil condensate pan.

Install condensate drain trap shown in Figure 8. Use drain connection size or larger. Do not operate unit without trap. Unit must be level or slightly inclined toward drain. With a trap installed on a unit located in an unconditioned area, water in the trap may freeze. It is recommended that the trap material be of a type that will allow for expansion of water when it freezes.

AIR FILTERS

Air filters for the return air side of the system are not provided as part of these models, and must be field supplied and installed as part of the final installation.

Prior thought should be given to return air location and placement of the air filter(s). The air filter(s) must be of adequate size and readily accessible to the operator of the equipment. Filters must be adequate in size and properly maintained for proper operation. If this is not done, excessive energy use, poor performance, and multiple service problems will result. It is impossible to oversize air filters. Generous sizing will result in cleaner air and coils as well as lower operating costs and extend the time between required changes. Table 5 shows minimum filter areas and recommended filter sizes. Actual filter sizes can vary with the installation due to single or multiple returns utilizing a filter/grille arrangement or being placed immediately ahead of the indoor coil face in the return air duct.

TABLE 5

FILTER REQUIREMENTS & SIZES

Model No.

Minimum Filter Area

Recommended

Size

 

 

 

 

 

PA1324

462 Square Inches

 

PA1330

15 x 30-5/8 x 1

(3.21 Square Feet)

PA1336

 

 

 

 

 

 

PA1342

608 Square Inches

 

PA1348

(2) 16 x 20 x 1

(4.62 Square Feet)

PA1360

 

 

 

 

 

 

NOTE: If roof hood accessory is to be used, information on air filters may be found under that heading in this manual. Air filters are supplied as part of that package.

FIGURE 5

CONDENSATE DRAIN TRAP

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Page

12 of 25

WIRING – MAIN POWER

Refer to the unit rating plate for wire sizing information and maximum fuse size. Each outdoor unit is marked with a “Minimum Circuit Ampacity”. This means that the field wiring used must be sized to carry that amount of current. If field installed heaters are added to the basic unit, a second separate power supply circuit will be required. The heater rating plate located adjacent to the basic unit rating plate will show the appropriate circuit ampacity fuse size, etc. (Also see “Electrical Specifications” on pages 5 & 7.) All models are suitable for connection with copper wire only. These instructions must be adhered to. Refer to the National Electrical Code for complete current carrying capacity data on the various insulation grades of wiring material.

The electrical specifications list fuse and wire sizes (75°F copper) for all models including the most commonly used heater sizes.

The unit rating plate lists a “Maximum Time Delay Fuse” or “HACR” type circuit breaker that is to be used with the equipment. The correct size must be used for proper circuit protection and also to assure that there will be no nuisance tripping due to the momentary high starting current of the compressor.

WIRING – 24V LOW VOLTAGE CONTROL CIRCUIT

Five (5) wires should be run from thermostat subbase to the 24V terminal board in the unit. A five conductor, 18 gauge copper, color-coded thermostat cable is recommended. The connection points are shown in Figure 6.

TABLE 6

THERMOSTAT WIRE SIZE

 

 

 

Maximum

 

 

 

Distance

Transformer VA

FLA

Wire Gauge

In Feet

 

 

 

 

 

 

20

45

 

 

18

60

55

2.3

16

100

 

 

14

160

 

 

12

250

 

 

 

 

TRANSFORMER TAPS

230/208V, 1 phase and 3 phase equipment employ dual primary voltage transformers. All equipment leaves the factory wired on 240V tap. For 208V operation, reconnect from 240V to 208V tap. The acceptable operating voltage range for the 240 and 208V taps are:

TAP

RANGE

240

253 – 216

208

220 – 187

NOTE: The voltage should be measured at the field power connection point in the unit and while the unit is operating at full load (maximum amperage operating condition).

THERMOSTATS

See specific wiring information for the different models, heater KWs, and voltages on unit and heating wiring diagrams.

 

TABLE 7

 

WALL THERMOSTATS

 

 

Thermostat

Predominant Features

 

 

8403-057

1 stage Cool; 1 stage Heat

heat-off-cool Fan: on-auto

(TH3110D1040)

Electronic Non-Programmable

 

 

8403-058

2 stage Cool; 2 stage Heat

Electronic Non-Programmable

(TH5220D1151)

 

Auto or Manual changeover

 

3 stage Cool; 3 stage Heat

8403-060

Programmable/Non-Programmable Electronic

(1120-445)

HP or Conventional

 

Auto or Manual changeover

 

 

IMPORTANT NOTE: Only the thermostats as shown above will work with this equipment. The thermostats and correct operation can be assured only by proper selection and application of these parts.

Manual

2100-467D

Page

13 of 25

FIGURE 6

LOW VOLTAGE WIRING

Low Voltage Wiring

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Thermostat Subbase

1120-445

C

G

R

Y1

Y2

O

W1

W2

 

L

 

 

A

D

 

 

 

 

 

 

B

E

 

 

 

 

 

 

YO

TH5220D1151

C

G

R

Y

RC

B

AUX

E

 

L

 

L

E

 

 

 

 

 

 

 

O

 

 

 

 

 

 

 

 

TH3110D1040

C

G

R

Y

RC

B

W

 

 

 

 

 

 

 

Unit 24V

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Terminal

C

G

R

Y

 

 

W1

W2

1

2

3

E

F

 

Block

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

REMOVE JUMPER FOR 2 STAGE ELECTRIC

 

 

 

 

 

 

 

 

 

HEAT ON UNITS WITH 15 OR MORE KW

Unit Control Panel

MIS-2149 B

Manual

2100-467D

Page

14 of 25

START UP

These units require R-410A refrigerant and Polyol Ester oil.

GENERAL:

1.Use separate service equipment to avoid cross contamination of oil and refrigerants.

2.Use recovery equipment rated for R-410A refrigerant.

3.Use manifold gauges rated for R-410A (800 psi/250 psi low).

4.R-410A is a binary blend of HFC-32 and HFC-125.

5.R-410A is nearly azeotropic - similar to R-22 and R-12. Although nearly azeotropic, charge with liquid refrigerant.

6.R-410A operates at 40-70% higher pressure than R-22, and systems designed for R-22 cannot withstand this higher pressure.

7.R-410A has an ozone depletion potential of zero, but must be reclaimed due to its global warming potential.

8.R-410A compressors use Polyol Ester oil.

9.Polyol Ester oil is hygroscopic; it will rapidly absorb moisture and strongly hold this moisture in the oil.

10.A liquid line dryer must be used - even a deep vacuum will not separate moisture from the oil.

11.Limit atmospheric exposure to 15 minutes.

12.If compressor removal is necessary, always plug compressor immediately after removal. Purge with small amount of nitrogen when inserting plugs.

TOPPING OFF SYSTEM CHARGE

If a leak has occurred in the system, Bard Manufacturing recommends reclaiming, evacuating (see criteria above), and charging to the nameplate charge. Topping off the system charge can be done without problems.

With R-410A, there are no significant changes in the refrigerant composition during multiple leaks and recharges. R-410A refrigerant is close to being an azeotropic blend (it behaves like a pure compound or single component refrigerant). The remaining refrigerant charge, in the system, may be used after leaks have occurred and then “top-off” the charge by utilizing the charging charts on the inner control panel cover as a guideline.

REMEMBER: When adding R-410A refrigerant, it must come out of the charging cylinder/tank as a liquid to avoid any fractionation, and to insure optimal system

performance. Refer to instructions for the cylinder that is being utilized for proper method of liquid extraction.

SAFETY PRACTICES:

1.Never mix R-410A with other refrigerants.

2.Use gloves and safety glasses, Polyol Ester oils can be irritating to the skin, and liquid refrigerant will freeze the skin.

3.Never use air and R-410A to leak check; the mixture may become flammable.

4.Do not inhale R-410A – the vapor attacks the nervous system, creating dizziness, loss of coordination and slurred speech. Cardiac irregularities, unconsciousness and ultimate death can result from breathing this concentration.

5.Do not burn R-410A. This decomposition produces hazardous vapors. Evacuate the area if exposed.

6.Use only cylinders rated DOT4BA/4BW 400.

7.Never fill cylinders over 80% of total capacity.

8.Store cylinders in a cool area, out of direct sunlight.

9.Never heat cylinders above 125°F.

10.Never trap liquid R-410A in manifold sets, gauge lines or cylinders. R-410A expands significantly at warmer temperatures. Once a cylinder or line is full of liquid, any further rise in temperature will cause it to burst.

START UP NOTES

For improved start up performance, wash the indoor coil with dishwasher detergent.

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15 of 25

START UP AND OPERATION

THREE PHASE SCROLL COMPRESSOR START UP INFORMATION

(Model PA13361-B)

Scroll compressors, like several other types of compressors, will only compress in one rotational direction. Direction of rotation is not an issue with single phase compressors since they will always start and run in the proper direction.

However, three phase compressors will rotate in either direction depending upon phasing of the power. Since there is a 50-50 chance of connecting power in such a way as to cause rotation in the reverse direction, verification of proper rotation must be made. Verification of proper rotation direction is made by observing that suction pressure drops and discharge pressure rises when the compressor is energized. Reverse rotation also results in an elevated sound level over that with correct rotation, as well as, substantially reduced current draw compared to tabulated values.

Verification of proper rotation must be made at the time the equipment is put into service. If improper rotation is corrected at this time there will be no negative impact on the durability of the compressor. However, reverse operation for over one hour may have a negative impact on the bearing due to oil pump out.

NOTE: If compressor is allowed to run in reverse rotation for several minutes the compressor’s internal protector will trip.

All three phase scroll compressors are wired identically internally. As a result, once the correct phasing is determined for a specific system or installation, connecting properly phased power leads to the same Fusite terminals should maintain proper rotation direction.

The direction of rotation of the motor may be changed by reversing any two line connections to the unit.

(Models PA13422-B, -C; PA13482-B, -C;

PA13602-B, -C)

All units with three phase scroll compressors are equipped with a three phase line monitor to prevent compressor damage due to phase reversal.

The phase monitor in this unit is equipped with two LED’s. If the “Y” signal is present at the phase monitor and phases are correct, the green LED will light.

If phases are reversed, the red fault LED will be lit and compressor operation is inhibited.

If a fault condition occurs, reverse tow of the supply leads to the unit. Do not reverse any of the unit factory wires as damage may occur.

SEQUENCE OF OPERATION

BLOWER ONLY – When the “Fan” switch on the room thermostat is placed in the “On” position (circuit R-G makes), the blower will energize and run until the “Fan” switch is placed back into the “Auto” position. This will allow for constant air circulation at a lower airflow during times when the unit is not in operation for cooling or heating.

COOLING – On a call for cooling from the room thermostat (circuit R-Y makes), the blower will energize (circuit R-G is automatic when R-Y makes) as well as the compressor, and outdoor fan motor. Note that if the “Fan” switch on the room thermostat is in the “On” position and the blower is already in operation, then the motor will ramp up to the required speed for cooling.

HEATING (1st Stage) – On a call for heating from the room thermostat (circuit R-W1 makes), the blower will energize (circuit R-G is automatic when R-W1 makes). This will place the system into heating operation to maintain the thermostat set temperature. Note that if the “Fan” switch on the room thermostat is in the “On” position and the blower is already in operation, then the motor will ramp up to the required speed for heating.

HEATING (2nd Stage) – If the operation of the 1st Stage electric heaters will not maintain the set room temperature, then the thermostat will call for additional heat to help maintain the set temperature. On a call for second stage heating from the room thermostat (circuit R-W2 makes), additional electric heaters will be energized if installed.

INDOOR BLOWER MOTOR

These models feature a variable speed (ECM) motor providing high efficiency, low sound levels and soft start capabilities. The motor is self adjusting to provide the proper airflow rate at duct static pressures up to 0.50" WC without user adjustment or wiring changes.

On command from the wall thermostat the motor will start slowly and ramp up to full speed over a period of 10-15 seconds.

When the thermostat is satisfied the blower will operate for approximately 1 minute, and then slow down and stop.

COMPRESSOR CONTROL MODULE

The compressor control is an anti-short cycle/lockout timer with high and low pressure switch monitoring and alarm output.

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ADJUSTABLE DELAY-ON-MAKE AND BREAK TIMER

On a call for compressor operation the delay-on-make period begins which will be 10% of the delay-on-break setting. When the delay-on-make is complete and the high pressure switch (and low pressure switch if employed) is closed, the compressor contactor is energized. Upon shutdown, the delay-on-break timer starts and prevents restart until the delay-on-break and delay-on-make periods have expired.

HIGH PRESSURE SWITCH AND LOCKOUT

SEQUENCE (Standard Feature)

If the high pressure switch opens, the compressor contactor will de-energize immediately. The lockout timer will go into a soft lockout and stay in soft lockout until the high pressure switch closes and the delay-on- make time has expired. If the high pressure switch opens again in this same operating cycle the unit will go into manual lockout condition and the alarm circuit will energize. Recycling the wall thermostat resets the manual lockout.

LOW PRESSURE SWITCH, BYPASS, AND

LOCKOUT SEQUENCE (Standard Feature)

If the low pressure switch opens for more that 120 seconds, the compressor contactor will de-energize and go into a soft lockout. Regardless the state of the low pressure switch, the contactor will reenergize after the delay-on-make time delay has expired. If the low pressure switch remains open or opens again for longer than 120 seconds the unit will go into manual lockout condition and the alarm circuit will energize. Recycling the wall thermostat resets the manual lockout.

ALARM OUTPUT

Alarm terminal is output connection for applications where alarm signal is desired. This terminal is powered whenever compressor is locked out due to HPC or LPC sequences as described.

NOTE: Both high and low pressure switch controls are inherently automatic reset devices. The high pressure switch and low pressure switch cut out and cut in settings are fixed by specific air conditioner or heat pump unit model. The lockout features, both soft and manual, are a function of the Compressor Control Module.

ADJUSTMENTS

ADJUSTABLE DELAY-ON-MAKE AND DELAY-ON-BREAK TIMER

The potentiometer is used to select Delay-on-Break time from 30 seconds to 5 minutes. Delay-on-Make (DOM) timing on power-up and after power interruptions is equal to 2 minutes plus 10% of Delay-on-Break (DOB) setting:

0.5 minute

(30 seconds)

DOB = 123 second DOM

1.0 minute

(60 seconds)

DOB = 126 second DOM

2.0 minute (120 seconds)

DOB = 132 second DOM

3.0 minute (160 seconds)

DOB = 138 second DOM

4.0 minute (240 seconds)

DOB = 144 second DOM

5.0 minute (300 seconds)

DOB = 150 second DOM

LOW AMBIENT CONTROL

Optional Low Ambient Control

An optional low ambient control is available for both factory and field installed options. The low ambient control is to be applied to the PA13 Series models when operation below 55° outdoor conditions are anticipated. Without this device, the evaporating pressure would fall off, and the indoor coil would ice over.

The fan cycling control cycles the fan motor on, once the liquid refrigerant pressure reaches 350 psig, and off, once it has dropped to 225 psig. It will continue to cycle between these parameters depending on outdoor temperatures and the load/stage of the system.

This cycling maintains a minimum liquid pressure affecting the minimum suction pressure. This effect insures an evaporating temperature that is slightly above the point of ice formation on the evaporator.

This field installed option is Bard Part #CMA-28. See Figure 7.

FIGURE 7

LOW AMBIENT CONTROL WIRING

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17 of 25

SERVICE AND TROUBLESHOOTING

SERVICE HINTS

1.Caution homeowner to maintain clean air filters at all times. Also, not to needlessly close off supply and return air registers. This reduces airflow through the system which shortens equipment service life as well as increasing operating costs.

2.Check all power fuses or circuit breakers to be sure that they are the correct rating.

3.Periodic cleaning of the outdoor coil to permit full and unrestricted airflow circulation is essential.

PRESSURE SERVICE PORTS

High and low pressure service ports are installed on all units so that the system operating pressures can be observed. Pressure tables can be found later in this manual covering all models on cooling cycle. It is imperative to match the correct pressure table to the unit by model number.

FAN BLADE SETTINGS

Shown in Figure 8 are the correct fan blade setting dimensions for proper air delivery across the outdoor coil.

Any service work requiring removal or adjustment in the fan and/or motor area will require that the dimensions below be checked and blade adjusted in or out on the motor shaft accordingly.

FIGURE 8

FAN BLADE SETTING

"B"

“A”

MD-1417BC

REFRIGERANT CHARGE

The correct system R-410A charge is shown on the unit rating plate.

You can reference Tables 10 & 11 to validate proper system performance. However, it is recommended that if incorrect charge is suspected, the system be reclaimed, evacuated and charged to the nameplate quantity and type.

The nameplate charge quantity is optimized for thermal performance and efficiency of this self-contained package system.

TABLE 8

FAN BLADE SETTING DIMENSIONS

Model

Dimension "A"

PA1324

PA1330

PA1336

PA1342

3¼"

PA1348

PA1360

TABLE 9

INDOOR BLOWER PERFORMANCE 1

 

 

 

2

3

4

Model

Rated

MAX

Continuous

Rated

Rated

ESP

ESP

Airflow

Cooling

Heating

 

 

 

 

 

CFM

CFM

 

 

 

 

 

 

PA1324

0.10

0.50

600

800

800

PA1330

0.15

0.50

750

1000

1000

 

 

 

 

 

 

PA1336

0.15

0.50

825

1100

1100

 

 

 

 

 

 

PA1342

0.20

0.50

925

1400

1400

 

 

 

 

 

 

PA1348

0.20

0.50

1025

1550

1550

 

 

 

 

 

 

PA1360

0.20

0.50

1150

1650

1650

 

 

 

 

 

 

1Motor will deliver consistent CFM through voltage supply range with no deterioration (197-253V for all 230/208V models).

2 Continuous CFM is the total air being circulated during continuous (manual fan) mode.

3 Will occur automatically with a call for "Y" for cooling mode operation.

4 Will occur automatically with a call for "W1" for heating mode operation.

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Page

Manual

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467D-2100

TABLE 10

PRESSURE TABLE

COOLING

 

 

 

 

 

 

 

 

 

Air Temperature Entering Outdoor Coil Degree F

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Return Air

Pressure

65°

70°

75°

80°

85°

90°

95°

100°

105°

110°

115°

120°

125°

 

Model

Temperature

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

75° DB

Low Side

125

127

129

131

133

135

137

138

140

142

143

145

147

 

 

62° WB

High Side

238

262

286

310

334

358

382

407

432

457

482

507

532

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

PA1324

80° DB

Low Side

134

136

138

140

142

144

146

148

150

151

153

155

157

 

67° WB

High Side

244

269

293

318

343

367

392

418

443

469

494

520

546

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

85° DB

Low Side

144

146

148

151

153

155

157

159

161

163

165

167

169

 

 

72° WB

High Side

253

278

304

329

355

380

406

432

459

485

512

538

565

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

75° DB

Low Side

126

128

131

133

135

137

139

141

143

145

148

150

152

 

 

62° WB

High Side

246

267

289

310

332

353

374

402

429

457

484

512

539

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

PA1330

80° DB

Low Side

135

137

140

142

144

147

149

151

153

156

158

160

162

 

67° WB

High Side

252

274

296

318

340

362

384

412

440

469

497

525

553

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

85° DB

Low Side

145

148

150

153

155

158

160

163

165

167

170

172

174

 

 

72° WB

High Side

261

284

306

329

352

375

397

427

456

485

514

543

573

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

75° DB

Low Side

125

127

128

130

132

133

135

136

138

139

141

142

 

 

 

62° WB

High Side

247

271

295

320

344

369

393

418

443

468

494

519

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

PA1336

80° DB

Low Side

134

136

137

139

141

142

144

146

147

149

150

152

 

 

67° WB

High Side

253

278

303

328

353

378

403

429

455

480

506

532

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

85° DB

Low Side

144

146

148

149

151

153

155

157

158

160

162

163

 

 

 

72° WB

High Side

262

288

314

339

365

391

417

444

471

497

524

551

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

LOW SIDE PRESSURE +2 PSIG

HIGH SIDE PRESSURE +5 PSIG

Tables based upon rated CFM (airflow) across the evaporator coil.

If incorrect charge suspected (more than +2 psig suction, +5 psig liquid),

it is recommended refrigerant charge be reclaimed, system evacuated and charged to serial plate quantity.

(Continued on Page 20 in Table 11)

Page

Manual

25 of 20

467D-2100

TABLE 11

PRESSURE TABLE

COOLING

 

 

 

 

 

 

 

 

 

Air Temperature Entering Outdoor Coil Degree F

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Return Air

Pressure

65°

70°

75°

80°

85°

90°

95°

100°

105°

110°

115°

120°

125°

Model

Temperature

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

75° DB

Low Side

126

128

129

131

132

134

136

137

138

140

141

142

143

 

62° WB

High Side

242

265

288

311

334

357

380

409

437

466

494

523

551

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

PA1342

80° DB

Low Side

135

137

138

140

142

143

145

146

148

149

151

152

153

67° WB

High Side

248

272

295

319

343

366

390

419

448

478

507

536

565

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

85° DB

Low Side

145

147

149

151

152

154

156

157

159

160

162

163

165

 

72° WB

High Side

257

281

306

330

355

379

404

434

464

494

525

555

585

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

75° DB

Low Side

125

127

128

129

130

132

133

134

136

137

139

140

142

 

62° WB

High Side

239

263

287

311

335

359

383

410

438

465

492

520

547

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

PA1348

80° DB

Low Side

134

135

137

138

139

141

142

144

145

147

148

150

152

67° WB

High Side

245

270

294

319

344

368

393

421

449

477

505

533

561

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

85° DB

Low Side

144

145

147

148

150

151

153

154

156

158

160

161

163

 

72° WB

High Side

254

279

305

330

356

381

407

436

465

494

523

552

581

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

75° DB

Low Side

124

125

126

127

128

129

130

131

131

132

133

134

 

 

62° WB

High Side

224

254

285

315

345

375

406

431

456

480

505

530

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

PA1360

80° DB

Low Side

133

134

135

136

137

138

139

140

141

141

142

143

 

67° WB

High Side

230

261

292

323

354

385

416

442

467

493

518

544

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

85° DB

Low Side

143

144

145

146

147

148

149

150

151

152

153

154

 

 

72° WB

High Side

238

270

302

334

366

398

431

457

484

510

537

563

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

LOW SIDE PRESSURE +2 PSIG

HIGH SIDE PRESSURE +5 PSIG

Tables based upon rated CFM (airflow) across the evaporator coil.

If incorrect charge suspected (more than +2 psig suction, +5 psig liquid),

it is recommended refrigerant charge be reclaimed, system evacuated and charged to serial plate quantity.

SUCTION AND DISCHARGE TUBE BRAZING

Compliant Scroll compressors have copper plated steel suction and discharge tubes. These tubes are far more rugged and less prone to leaks than copper tubes used on other compressors. Due to different thermal properties of steel and copper, brazing procedures may have to be changed from those commonly used.

To disconnect: heat joint Areas 2 and 3 slowly and uniformly until braze material softens and the tube can be pulled out of suction fitting. (See Figure 9.)

To connect:

Recommended brazing materials: silfos with minimum 5% silver or silver braze material with flux.

Reinsert tube into fitting.

Heat tube uniformly in Area 1 moving slowly to Area 2. When joint reaches brazing temperature, apply brazing material. (See Figure 9)

Heat joint uniformly around the circumference to flow braze material completely around the joint.

Slowly move torch into Area 3 to draw braze material into joint. (See Figure 9.)

Do not overheat joint.

FIGURE 9

BRAZING DIAGRAM

Manual

2100-467D

Page

21 of 25

TROUBLESHOOTING GE ECM 2.3MOTORS

NOTE: Affects Models PA13241, PA13301, PA13361

CAUTION:

Disconnect power from unit before removing or replacing connectors, or servicing motor. To avoid electric shock from the motor’s capacitors, disconnect power and wait at least 5 minutes before opening motor.

Symptom Cause/Procedure

Motor rocks slightly when starting

Motor won’t start

• No movement

This is normal start-up for ECM

Check blower turns by hand

Check power at motor

Check low voltage (24 Vac R to C) at motor

Check low voltage connections (G, Y, W, R, C) at motor

Check for unseated pins in connectors on motor harness

Test with a temporary jumper between R - G

Check motor for tight shaft

Perform motor/control replacement check

Perform Moisture Check

• Motor rocks,

• Check for loose or compliant motor mount

but won’t start

• Make sure blower wheel is tight on shaft

 

 

• Perform motor/control replacement check

Motor oscillates up

• It is normal for motor to oscillate with no

load & down while being

on shaft

tested off of blower

 

Motor starts, but

 

runs erratically

 

• Varies up and down

• Check line voltage for variation or “sag”

or intermittent

• Check low voltage connections

 

(G, Y, W, R, C) at motor, unseated pins in

 

motor harness connectors

 

• Check “Bk” for erratic CFM command (in

 

variable-speed applications)

 

• Check out system controls, Thermostat

 

• Perform Moisture Check

• “Hunts” or “puffs” at

• Does removing panel or filter reduce

high CFM (speed)

“puffing”?

 

- Reduce restriction

 

- Reduce max airflow

• Stays at low CFM

• Check low voltage (Thermostat) wires and

despite system call

connections

for cool or heat CFM

• Verify fan is not in delay mode; wait until

 

delay complete

 

• “R” missing/not connected at motor

 

• Perform motor/control replacement check

• Stays at high CFM

• “R” missing/not connected at motor

 

• Is fan in delay mode? - wait until delay time

 

complete

 

• Perform motor/control replacement check

• Blower won’t shut off

• Current leakage from controls into G, Y or W?

 

Check for Triac switched thermostat or solid-

 

state relay

Excessive noise

• Determine if it’s air noise, cabinet, duct or

 

motor noise; interview customer, if necessary

• Air noise

• High static creating high blower speed?

 

- Is airflow set properly?

 

- Does removing filter cause blower to slow

 

down? Check filter

 

- Use low-pressure drop filter

 

- Check/correct duct restrictions

Symptom Cause/Procedure

Noisy blower or cabinet • Check for loose blower housing, panels, etc.

High static creating high blower speed?

-Check for air whistling through seams in ducts, cabinets or panels

-Check for cabinet/duct deformation

“Hunts” or “puffs” at • Does removing panel or filter reduce

high CFM (speed)

“puffing”?

 

- Reduce restriction

 

- Reduce max. airflow

Evidence of Moisture

 

• Motor failure or

• Replace motor and Perform Moisture

Check

 

malfunction has occurred

 

and moisture is present

 

• Evidence of moisture

• Perform Moisture Check

present inside air mover

 

Do

Don’t

Check out motor, controls, wiring and connections thoroughly before replacing motor

Orient connectors down so water can’t get in

-Install “drip loops”

Use authorized motor and model #’s for replacement

Keep static pressure to a minimum:

-Recommend high efficiency, low static filters

-Recommend keeping filters clean.

-Design ductwork for min. static, max. comfort

-Look for and recommend ductwork improvement, where necessary

Size the equipment wisely

Check orientation before inserting motor connectors

Automatically assume the motor is bad.

Locate connectors above 7 and 4 o’clock positions

Replace one motor or control model # with another (unless an authorized replacement)

Use high pressure drop filters some have ½" H20 drop!

Use restricted returns

Oversize system, then compensate with low airflow

Plug in power connector backwards

Force plugs

Moisture Check

Connectors are oriented “down” (or as recommended by equipment manufacturer)

Arrange harness with “drip loop” under motor

Is condensate drain plugged?

Check for low airflow (too much latent capacity)

Check for undercharged condition

Check and plug leaks in return ducts, cabinet

Comfort Check

Check proper airflow settings

Low static pressure for lowest noise

Set low continuous-fan CFM

Use humidistat and 2-speed cooling units

Use zoning controls designed for ECM that regulate CFM

Thermostat in bad location?

Manual

2100-467D

Page

22 of 25

TROUBLESHOOTING GE ECM2.3MOTORS CONT’D.

Replacing ECM Control Module

To replace the control module for the GE variable-speed indoor blower motor you need to take the following steps:

1. You MUST have the correct replacement module. The controls are factory programmed for specific operating modes. Even though they look alike, different modules may have completely different functionality.

USING THE WRONG CONTROL MODULE VOIDS ALL PRODUCT WARRANTIES AND MAY PRODUCE UNEXPECTED RESULTS.

2.Begin by removing AC power from the unit being serviced. DO NOT WORK ON THE MOTOR WITH AC POWER APPLIED. To avoid electric shock from the motor’s capacitors, disconnect power and wait at least 5 minutes before opening motor.

3.It is not necessary to remove the motor from the blower assembly, nor the blower assembly from the unit. Unplug the two cable connectors to the motor control assembly. There are latches on each connector. DO NOT PULL ON THE WIRES. The plugs remove easily when properly released.

4.Locate the screws that retain to the motor control bracket to the sheet metal of the unit and remove them. Remove two (2) nuts that retain the control to the bracket and then remove two (2) nuts that retain sheet metal motor control end plate. Refer to Figure 10.

5.Disconnect the three (3) wires interior of the motor control by using your thumb and forefinger squeezing the latch tab and the opposite side of the connector plug, gently pulling the connector. DO NOT PULL ON THE WIRES, GRIP THE PLUG ONLY. Refer to Figure 10.

6.The control module is now completely detached from the motor. Verify with a standard ohmmeter that the resistance from each motor lead (in the motor plug just removed) to the motor shell is >100K ohms. Refer to Figure 11. (Measure to unpainted motor end plate.) If any motor lead fails this test, do not proceed to install the control module. THE MOTOR IS DEFECTIVE AND MUST BE REPLACED. Installing the new control module will cause it to fail also.

 

10

 

Figure 3

 

Control Disassembly

Only remove

From Motor

Hex Head Bolts

Push until

 

Latch Seats

 

Over Ramp

 

Circuit

 

Board

7.Verify that the replacement control is correct for your application. Refer to the manufacturer's authorized replacement list.

USING THE WRONG CONTROL WILL RESULT IN IMPROPER OR NO BLOWER OPERATION. Orient the control module so that the 3-wire motor plug can be inserted into the socket in the control. Carefully insert the plug and press it into the socket until it latches. A SLIGHT CLICK WILL BE HEARD WHEN PROPERLY INSERTED.

8.Reverse the steps #5, 4, 3 to reconnect the motor control to the motor wires, securing the motor control cover plate, mounting the control to the bracket, and mounting the motor control bracket back into the unit. MAKE SURE THE ORIENTATION YOU SELECT FOR REPLACING THE CONTROL ASSURES THE CONTROL'S CABLE CONNECTORS WILL BE LOCATED DOWNWARD IN THE APPLICATION SO THAT WATER CANNOT RUN DOWN THE CABLES AND INTO THE CONTROL. DO NOT OVERTIGHTEN THE BOLTS.

9.Plug the 16-pin control plug into the motor. The plug is keyed. Make sure the connector is properly seated and latched.

10.Plug the 5-pin power connector into the motor. Even though the plug is keyed, OBSERVE THE PROPER ORIENTATION. DO NOT FORCE THE CONNECTOR. It plugs in very easily when properly oriented. REVERSING THIS PLUG WILL CAUSE IMMEDIATE FAILURE OF THE CONTROL MODULE.

11.Final installation check. Make sure the motor is installed as follows:

a.Motor connectors should be oriented between the 4 o’clock and 8 o’clock positions when the control is positioned in its final location and orientation.

b.Add a drip loop to the cables so that water cannot enter the motor by draining down the cables. Refer to Figure 12.

The installation is now complete. Reapply the AC power to the HVAC equipment and verify that the new motor control module is working properly. Follow the manufacturer’s procedures for disposition of the old control module.

Figure 11

Figure 4

Winding Test

Motor Connector

(3-pin)

Motor

ECM 2.0

 

 

 

Motor OK when

Note:

 

 

R > 100k ohm

 

 

 

Use the shorter

 

 

 

bolts and

 

 

 

alignment pin

 

 

12

supplied when

 

 

 

 

Figure 5

replacing an

 

 

Drip Loop

ECM 2.0

Motor Connector

 

 

control.

 

 

(3-pin)

Back of

Connector Orientation

ECM

Control

Between 4 and 8 o'clock

 

2.3/2.5

Control Connector

 

 

 

(16-pin)

 

 

 

Power Connector

 

 

 

(5-pin)

 

 

 

Hex-head Screws

 

Drip Loop

Manual

2100-467D

Page

23 of 25

TROUBLESHOOTING GE X13-SERIES ECM2.3MOTORS

NOTE: Bard Models PA13422, PA13482 & PA13602 contain the X13-Series Motors.

If the Motor is Running

1.It is normal for the motor to rock back and forth on start up. Do not replace the motor if this is the only problem identified.

2.If the system is excessively noisy, does not appear to change speeds in response to a demand (Heat, Cool, Other), or is having symptoms during the cycle such as tripping limit or freezing coil, check the following:

a.Wait for programmed delays to time out.

b.Ensure that the motors control inputs are wired to the factory supplied wiring diagram to insure motor is getting proper control signals and sequencing.

c.Remove the filter and check that all dampers, registers, and grilles are open and free flowing. If removing the filters corrects the problem, clean or replace with a less restrictive filter. Also check and clean the blower wheel or coil as

necessary.

d.Check the external static pressure (total of both supply and return) to insure that you are within the ranges as listed on the unit serial plate. If higher than allowed, additional duct work is needed.

e.If the motor does not shut off at the end of the cycle, wait for any programmed delays to time out (no more than 90 seconds). Also make sure that there is no call for “Continuous Fan” on the "G" terminal.

f.If the above diagnostics do not solve the problem, confirm the voltage checks in the next section below, then continue with the “Model X13 Communication Diagnostics”.

If the Motor is Not Running

1.Check for proper high voltage and ground at the (L/L1) (G) (N/ L2) connections at the motor (see Figure 13). Correct any voltage issues before proceeding to the next step. The X13 Motor is voltage specific. Only the correct voltage should be applied to the proper motor. Input voltage within plus or minus 10% of the nominal 230 VAC is acceptable.

2.If the motor has proper high voltage and ground at the (L/L1)

(G)(N/L2) connections, then continue with the “Model X13 Communication Diagnostics”.

FIGURE 13

↓ ↓

L2 LINE

EARTH

L1 LINE

POWER

GROUND

POWER

NOTE: MOTOR IS CONSTANTLY

POWERED BY LINE VOLTAGE

Manual

2100-467D

Page

24 of 25

TROUBLESHOOTING GE X13-SERIES ECM2.3MOTORS CONT’D.

Model X13 Communication Diagnostics

The X13 motor is communicated through 24 VAC low voltage (Thermostat Control Circuit Wiring).

1. Start with unit wiring diagram to confirm proper connections and voltage (see Figure 14).

2. Initiate a demand from the thermostat and check the voltage between the common and the appropriate motor terminal (1-5). ("G" input is typically on terminal #1, but refer to wiring diagram!)

a.If the low voltage communication is not present, check the demand from the thermostat. Also check the output terminal and wire(s) from the terminal strip or control relay(s) to the motor.

b.If the motor has proper high voltage as identified above (Motor not Running #1), and proper low voltage to a programmed terminal, and is not operating, the motor is failed, and will require replacement.

FIGURE 14

24VAC Common

24VAC "R" Signal through thermostat output.

24VAC Common

24VAC "R" Signal through thermostat output.

Manual

2100-467D

Page

25 of 25