Fedders A*PB24A1, A*PB24B1, A*PC60A1 Series, A*PB36A1 Series, A*PC48A1 Series Instruction Manual

Electric Air Handler

TABLE OF CONTENTS

SERIES NOMENCLATURE . . . . . . . . . . . . . . . . . . . . . . . .1

RECOGNIZE SAFETY SYMBOLS, WORDS AND LABELS .1

INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2

INSPECTION AND UNPACKING . . . . . . . . . . . . . . . . . . . .2

NOTES TO INSTALLER

INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2

Codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2

Power Considerations . . . . . . . . . . . . . . . . . . . . . . .2

Electric Heat Kits . . . . . . . . . . . . . . . . . . . . . . . . . . . .2

Location . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2

Clearances . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2

Upflow Application . . . . . . . . . . . . . . . . . . . . . . . . .3

Horizontal Applicaton . . . . . . . . . . . . . . . . . . . . . . .4

Downflow Application . . . . . . . . . . . . . . . . . . . . . . .5

Connect Refrigerant Piping . . . . . . . . . . . . . . . . . . .6

Factory and Field installed Expansion Valves . . . . .6

Ductwork . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7

Return Air Ducting . . . . . . . . . . . . . . . . . . . . . . . . . .7

Return Air Platform Height . . . . . . . . . . . . . . . . . . .7

LINE VOLTAGE CONNECTIONS . . . . . . . . . . . . . . . . . . . .7

24 VOLT CONTROL SYSTEM . . . . . . . . . . . . . . . . . . . . . .8

CONDENSATE PLUMBING

WIRING DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9

DIMENSIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10

BLOWER SPEED/STATIC OPERATION TABLE . . . . . . . .11

ELECTRIC HEAT KIT . . . . . . . . . . . . . . . . . . . . . . . . . . . .12

Heating Specifications . . . . . . . . . . . . . . . . . . . . . .13

WARRANTY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14

. . . . . . . . . . . . . . . . . . . . . . . . . . .2

. . . . . . . . . . . . . . . . . . . . . . . .

8

NOTE:

THESE INSTRUCTIONS ARE INTENDED AS AN AID TO QUALIFIED
SERVICE PERSONNEL FOR PROPER INSTALLATION,
ADJUSTMENT AND OPERATION OF THIS EQUIPMENT. READ
THE ENTIRE INSTRUCTION MANUAL THOROUGHLY BEFORE
ATTEMPTING INSTALLATION OR OPERATION.

1

SERIES NOMENCLATURE

roduct Type

P

= Air handler

A

Brand Identifier

Motor

B = 43 3/8” H x 18” W x 22” D
C = 48 1/8” H x 22” W x 26” D

18 = 18,000 BTU/H (5.28 kW)
24 = 24,000 BTU/H (7.03 kW)
30 = 30,000 BTU/H (8.79 kW)

6 = 36,000 BTU/H (10.55 kW)

3
42 = 42,000 BTU/H (12.31 kW)
48 = 48,000 BTU/H (14.07 kW)
60 = 60,000 BTU/H (17.58 kW)

Chassis Size

Nominal BTUH

= ECM

E

P

= PSC

A L P B 24 A 1 * A

evision Letter

R

Electrical Designation

1 = 208 / 230 Volts, 1Phase, 60 Hz

= 230 Volts, 1 Phase, 50 Hz

2
3 = 208 / 230 Volts, 3 Phase, 60 Hz
4 = 460 Volts, 3 Phase, 60 Hz

= 230 Volts, 3 Phase, 50 Hz

5
6 = 380 Volts, 3 Phase, 50 Hz

Design Series

RECOGNIZE SAFETY SYMBOLS, WORDS AND LABELS

What You Need To Know About Safety Instructions

Warning and Important Safety Instructions appearing in this
manual are not meant to cover all possible conditions and
situations that may occur. Common sense, caution and care
must be exercised when operating or cleaning tools and
equipment.

Always contact your dealer, distributor, service agent or
manufacturer about problems or conditions you do not
understand.

This is the safety alert symbol. It is used to alert you to
potential personal injury hazards. Obey all safety messages
that follow this symbol to avoid possible injury or death.

DANGER

DANGER indicates an imminently hazardous situation which,
if not avoided, will result in death or serious injury.

WARNING

WARNING indicates a potentially hazardous situation which,
if not avoided, could result in death or serious injury.

CAUTION

CAUTION indicates a potentially hazardous situation which, if
not avoided, may result in minor or moderate injury.

CAUTION

CAUTION used without the safety alert symbol indicates
a potentially hazardous situation which, if not avoided,
may result in property damage.

WARNING

IMPROPER INSTALLATION, ADJUSTMENT,
ALTERATION, SERVICE OR MAINTENANCE CAN
CAUSE INJURY, PROPERTY DAMAGE OR LOSS OF LIFE.
READ THIS MANUAL COMPLETELY BEFORE
BEGINNING ANY WORK AND FOLLOW ALL SAFETY
PRECAUTIONS.

A QUALIFIED INSTALLER MUST PERFORM
INSTALLATION AND SERVICE.

DO NOT DESTROY THIS MANUAL. PLEASE READ
CAREFULLY AND KEEP IN A SAFE PLACE FOR FUTURE
REFERENCE BY A SERVICE TECHNICIAN.

THESE INSTRUCTIONS ARE INTENDED AS AN AID TO
QUALIFIED SERVICE PERSONNEL FOR PROPER
INSTALLATION, ADJUSTMENT AND OPERATION OF
THIS COMPONENT. READ THESE INSTRUCTIONS
THOROUGHLY BEFORE ATTEMPTING INSTALLATION
OR OPERATION. FAILURE TO FOLLOW THESE
INSTRUCTIONS MAY RESULT IN IMPROPER
INSTALLATION, ADJUSTMENT, SERVICE OR
MAINTENANCE, POSSIBLY RESULTING IN FIRE,
ELECTRICAL SHOCK, PROPERTY DAMAGE, PERSONAL
INJURY OR DEATH.

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.

DO NOT STORE OR USE GASOLINE OR OTHER
FLAMMABLE VAPORS AND LIQUIDS, OR OTHER
COMBUSTIBLE MATERIALS IN THE VICINITY OF THIS
AIR HANDLER OR ANY OF ITS MATCHING SYSTEM
COMPONENTS (CONDENSING UNIT, HEAT PUMP OR
FURNACE).

1

NOTES TO INSTALLER

The words “SHALL” and “MUST” indicate a requirement which
is essential to satisfactory and safe product performance. The
words “SHOULD” and “MAY” indicate a recommendation or
advice which is not essential and not required but which may
be useful or helpful.

The instructions are for the use of qualified individuals specially
trained and experienced in the installation of this type
equipment and related system components.

Installation and service personnel are required by some locales
to be licensed. Persons not qualified shall not install this
equipment nor interpret these instructions.

INTRODUCTION

Models A*PB and Plare designed for flexibility and can be used
for upflow, horizontal or downflow applications. These units
are available for systems of 18,000 through 60,000 BTUH
nominal cooling capacity. Factory authorized electric heater kits
are available in 5 kW through 20 kW sizes. See product
specifications for available accessory kits.

INSPECTION AND UNPACKING

A thorough inspection of the shipping container must be made
immediately upon receiving your unit. Look for any punctures
or openings, and if it appears damage has occurred, note it on
the freight bill before signing. Contact delivering carrier
immediately to inspect damage. Do not begin installation work
should begin until this inspection is completed.

INSTALLATION

Codes

The installer must comply with all local, state and federal codes
and/or regulations pertaining to this type of equipment and its
installation. Such codes and/or regulations shall take precedent
over any recommendations contained herein. If there are no
local codes on the subject, installations shall be made in
accordance with the National Electrical Code (NEC) and
recommendations made by the National Board of Fire
Underwriters.

Power Considerations

The installer shall check available power to make certain it
matches the unit name plate rating and that constant voltage
can be maintained on the unit. Unsatisfactory performance or a
possible hazard could otherwise result. The local power
company should be contacted with questions concerning power
supply.

Electric Heater Kits

Only EEB/EEC series electric heater kit may be installed into the
air handler. See Electric Heat section on page 12 for more
information.

Location

All models are approved for alcove, closet, and attic installation
in the upflow, downflow or horizontal position. Refer to the

pplicable section of this manual on pages 3-5 for specific

a
installation instructions on each position.

The air handler must be installed in a level position and should
be located for ease in connecting air duct with proper air
distribution.

xterior surface of cabinet may sweat when unit is installed in

E

on-air-conditioned space such as attic or garage. Installer must

n
provide protection such as full-size auxiliary drain pan on all
units. Be sure to allow for filter access for periodic user servicing.
In addition, caulking must be applied around the power and
control wires entering the control box. This will prevent air
leakage into and condensate from forming inside the control
box.

Clearances

Clearances from the air handler to the combustibles are zero
inches from all sides, top, and bottom; one inch from discharge
air plenum; and the duct within 36 inches of the plenum.

Provide adequate space for servicing the air handler; at least 30
inches. All service and maintenance can be performed from the
front access doors of the air handler.

WARNING

DO NOT, UNDER ANY CIRCUMSTANCES, CONNECT
RETURN DUCTWORK TO ANY OTHER HEAT-PRODUCING
DEVICE SUCH AS FIREPLACE INSERT, STOVE, ETC.
UNAUTHORIZED USE OF SUCH DEVICES MAY RESULT IN
FIRE, CARBON MONOXIDE POISONING, EXPLOSION,
PERSONAL INJURY, OR PROPERTY DAMAGE.

2

Upflow Applicaton

D

ISCHARGE DUCT (600 FPM)

24” MINIMUM

RETURN DUCT WITH A MINIMUM OF

1/2” FIBERGLASS DUCT LINER (500 FPM).

REFER TO LOCAL CODES.

AIR

HANDLER

(MAY ALSO BE

DOWNFLOW)

DISCHARGE DUCT (600 FPM)

24” MINIMUM

RETURN DUCT WITH A MINIMUM OF

1/2” FIBERGLASS DUCT LINER (500 FPM).

REFER TO LOCAL CODES.

AIR

HANDLER

(MAY ALSO BE

DOWNFLOW)

DISCHARGE DUCT (600 FPM)

24” MINIMUM

RETURN

GRILLE

(500FPM)

RETURN PLATFORM LINED WITH

1” FIBERGLASS INSULATION.

REFER TO LOCAL CODES.

CLOSET

AIR HANDLER

In an upflow application normally a duct is employed as a return air means as shown in Figure 1 below

r a platform is installed as in Figure 2.

o

111

Upflow Installation With Return Duct

112

Upflow Installation With Return Platform

3

SUPPLY

AIR

SERVICE

PLATFORM

CEILING

JOISTS

AIR HANDLER SUPPORTS

(FIELD SUPPLIED)

AUXILIARY DRAIN PAN

(FIELD FABRICATED)

P-TRAP

PRIMARY

DRAIN LINE

RETURN AIR

AUXILIARY
DRAIN LINE

Horizontal Application

This type of position is usually used in an attic or crawl space. The air

andler may be laid on the left or right side for horizontal applications.

h
The factory-installed coil is intended for left-side-down installation.

This type of installation requires a return air duct to be attached to the
air handler inlet. The opposite end of the return air duct is then routed
to a return air grille mounted to the ceiling or wall. This duct MUST be
no smaller than the inlet opening of the air handler.

or Horizontal Right Application:

F

1. Remove front panels from the air handler.

2. Remove coil assembly from the air handler.

3. Remove horizontal drain pan from left hand side of air handler and

re-install on right hand side. Change splash baffle location from left
hand to right hand side of drain pan flange.

4. Remove the horizontal coil support bracket from the right hand side

of the air handler.

5. Reinstall coil assembly in the air handler.

6. Reattach coil support bracket to the left hand side of the air

handler.

7. Replace front panels.

CAUTION

Horizontal applications in unconditioned areas, such
as attics above a ceiling, require special
precautionary measures. An auxiliary drain pan
having at least two inches overall clearance around
the unit MUST be field-fabricated and installed as

hown below.

s
The drain outlet and drain line for the auxiliary

drain pan need not be trapped but should be sloped
to a suitable drain.

CAUTION

For optimum condensate drainage performance in
horizontal installations, unit should be leveled
along the length and width. Failure to follow this
caution may result in product or property damage.

CAUTION

A P-type trap must be installed in the primary drain
line as shown in figure 3 below.

Horizontal Installation

113

4