Ductwork. Fedders A*PB24A1, AFPB36A1, AFPB24A1, A*PC48A1 Series, AFPB24B1, A*PA24B1 Series, AFPC60B1, A*PB24B1, AFPC48B1, A*PC48B1 Series

Ductwork

This air handler shall not be installed without supply plenums and proper ducting. Connect supply air duct over 1/2“ flanges on supply air opening. Secure duct to flange and seal connection.

Use flexible connectors between ductwork and unit at discharge connection. Ductwork passing through unconditioned space must be insulated and covered with vapor barrier.

Return Air Ducting

The dimensions of the return air duct or platform must be at a minimum the same size as the return air opening on the air handler, regardless of the air handler position.

When framing a return air platform, the opening size should be as shown below. If the air handler is to be installed in a closet, be sure to allow room for wiring and refrigerant lines.

Top View

C

D

F

LINE VOLTAGE CONNECTIONS

WARNING

BEFORE PERFORMING ANY WORK ON THIS EQUIPMENT,

POWER SUPPLY MUST BE TURNED OFF AT THE

HOUSEHOLD SERVICE BOX TO AVOID THE POSSIBILITY

OF SHOCK, INJURY, DAMAGE TO EQUIPMENT OR DEATH.

1. The power supply can be connected through the right side or top of the air handler. Conduit knockouts are provided for

1/2

”,

3/4

”, 1”, and 1

1/4

” conduit.

2. Refer to the Control System section for recommended lowvoltage wire gauges.

3. See Power Supply Table on page 9 for power supply specifications.

4. Use only copper conductors for supply wiring.

5. The air handler must be permanently grounded.

The ground lug is located in the field wiring box.

B

Framed-in

Opening

Air

Handler

Bottom

Conduit Knockout Locations

Top of air handler

Right side of air handler

MODEL

AFPB24A1

AFPB24B1

AFPB36A1

AFPC48A1

AFPC48B1

AFPC60A1

AFPC60B1

A

E

A B

IN CM IN CM IN

14 37.3 14 1 /

4

36.2 2

C

CM IN

5 2

D E F

CM IN CM IN CM

5 4 10.1 4 10.1

14 37.3 14 1 /

4

36.2 2

14 37.3 14

1

/

4

36.2 2

5 2

5 2

5 4 10.1 4 10.1

5 4 10.1 4 10.1

16

3

/

8

41.6 22

1

/

4

56.5 3 7.6

3 7.6 1

3

/

4

4.4

2 5

16

3

/

8

41.6 22

1

/

4

56.5 3 7.6

3 7.6 1

3

/

4

4.4

2 5

16

3

/

8

41.6 22

1

/

4

56.5 3 7.6

3 7.6 1

3

/

4

4.4

2 5

16

3

/

8

41.6 22

1

/

4

56.5 3 7.6

3 7.6 1

3

/

4

4.4

2 5

Return Air Platform Height

If the air handler is to be used in the upflow position, the height of the return air platform should be no smaller than the height listed below for the specific model of air handler.

Model

AFPB24A1, AFPB24B1

AFPB36A1

AFPC48A1, AFPC48B1

AFPC60A1, AFPC60B1

Platform

Inches

Height

Cm

12

14

16

18

30.5

35.6

40.6

45.7

Conduit knockouts

Grounding Lug Location

Field wiring box

(detail)

Grounding lug

Conduit knockouts

7