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
Downflow Application
Remove the three
screws on both sides.
Flip over and replace
in new position using
pre-punched holes.
UPFLOW
POSITION
SUPPLY
OPENING
RACK
POSITION
FILTER
DOOR
DOWNFLOW
POSITION
SUPPLY
OPENING
FILTER
DOOR
UNIT
FLANGE
5 1/2”
FLOORFLOOR
PLENUM
AIR HANDLER
2 X 6 BOTH
SIDES AND BACK
Relocating Coil
CAUTION
The coil MUST be relocated for downflow
application.
1. Remove coil access door.
2. Slide coil out of air handler.
3. Remove coil rack from air handler by removing
screws from side of air handler.
4. Relocate rack in air handler as shown in Figure 4
using screws from side of air handler.
5. Turn air handler into downflow position.
6. Slide refrigerant coil into air handler.
7. Reverse and replace air handler door(s).
Installation Considerations
• No downflow sub-base is required with this air
handler, however, local codes may require the use
of a non-combustible sub-base when used with
electric heater kit.
• An “L” or “T” shaped duct enclosure MUST be used
as a supply plenum. No registers or outlets SHALL be
located directly below the air handler supply outlet.
• Size and frame the floor opening as shown in Figure 5.
Refer to the Dimension drawing on page 10. Care
MUST be taken not to overcut the floor opening.
• Caulk around the floor opening with a non-
flammable caulk such as silicone. Set the air handler
in place and secure the air handler properly.
• Allow access to the low voltage connection by
building the platform so that there is a minimum of
51/2" between the floor and the unit flange.
Return Air Filter Clearance
On downflow applications, certain coil models will
protrude from the top of the air handler (coils greater
than 15" tall on A24 through A36 air handlers and coils
greater than 18" on A42 through A60 air handlers). On
these models, the return air filter may be removed and
a separate filter grille may be installed for closet
applications.
If this method is not desirable, cabinet extension kit No.
65-1647 for A24, A30, and A36; or No.65-1649 for A42,
A48, and A60 may be ordered. The extension kit screws
to the side of the air handler and extends the length of
the air handler coil cabinet. In addition, the kit includes
a filter compartment and door.
Emergency Drain Opening
The indoor coil emergency drain opening must be used
for this application. Refer to page 8 for instructions on
condensate tubing.
114
Relocating Coil for Downflow Position
Supply Plenum Floor Opening
115
5
Connect Refrigerant Piping
4
o’clock8 o’clock
4 o’clock8 o’clock
se field supplied tubing of refrigerant grade. Suction tube
U
must be insulated. Do not use damaged, dirty, or
contaminated tubing because it may plug refrigerant flow
control device. ALWAYS evacuate the coil and field supplied
tubing before opening outdoor unit service valves.
Factory and Field-Installed Expansion Valves
1. The bulb and capillary tubing should be routed outside
of the case. Make sure the capillary tube will not contact
any sharp edges of the case. On factory installed
expansion valves, the adjustable sensing bulb is not
permanently installed onto the coils’ vapor line in order
to allow easy removal during installation.
2. To assure accurate sensing and the best performance the
bulb should be placed on a horizontal section of the
vapor line at the four or eight o’clock position and at
least 6” from the coil manifold.
WARNING
ALWAYS HAVE A FIRE EXTINGUISHER AVAILABLE
WHEN WORKING WITH AN OPEN FLAME.
LWAYS USE SAFETY GLASSES, PROTECTIVE
A
CLOTHING, AND WORK GLOVES.
117
116
Sensing bulb
attached with
clamps
Vapor line
Attach bulb to
vapor line at four
or eight o’clock
position
CAUTION
THE TXV VALVE CAN BE DAMAGED BY EXTREME
HEAT. PROPER PRECAUTIONS SHOULD BE TAKEN TO
AVOID OVERHEATING THE TXV VALVE AND CAUSING
DAMAGE TO THE INTERNAL COMPONENTS.
CAUTION
THE TXV SENSING BULB CAN BE DAMAGED BY
EXTREME HEAT FROM BRAZING. THE BULB SHOULD
BE REMOVED BEFORE PERFORMING ANY BRAZING
PROCEDURE AND NOT INSTALLED UNTIL AFTER THE
VAPOR AND LIQUID LINES ARE BRAZED AND LEAK
CHECKED.
TXV valve can be accessed
through the valve cover-plate
on the front of the air handler.
3. Attach the bulb securely with the copper strap provided.
4. Insulate the bulb thoroughly with a suitable insulation
material such as cork tape.
5. Coils with TXVs should be charged 10-12 degrees
(+ or – one degree) of sub-cooling. This supercedes any
subcooling value listed with condensing unit’s literature.
For the majority of installations no adjustment to the
TXV setting is required. However, if the measured
or greater than 8
superheat is less than 4
°
adjustment is required. The adjustment stem is at the
base of the valve under the flare nut. To increase
superheat, tighten the stem clockwise and to decrease
superheat, back-out the stem counter-clockwise. Use a
1
” refrigeration service wrench for this function.
/4
NOTE:
When removing refrigerant, always use standard reclaim
procedures.
°an
6
uctwork
D
This air handler shall not be installed without supply plenums
and proper ducting. Connect supply air duct over 1/2“ flanges on
upply air opening. Secure duct to flange and seal connection.
s
se flexible connectors between ductwork and unit at discharge
U
connection. Ductwork passing through unconditioned space
must be insulated and covered with vapor barrier.
eturn Air Ducting
R
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.
118
Top View
C
D
F
Framed-in
Opening
B
Air
Handler
Bottom
LINE VOLTAGE CONNECTIONS
ARNING
W
BEFORE PERFORMING ANY WORK ON THIS EQUIPMENT,
POWER SUPPLY MUST BE TURNED OFF AT THE
OUSEHOLD SERVICE BOX TO AVOID THE POSSIBILITY
H
OF SHOCK, INJURY, DAMAGE TO EQUIPMENT OR DEATH.
. The power supply can be connected through the right side
1
or top of the air handler. Conduit knockouts are provided
1
for
/2”, 3/4”, 1”, and 11/4” 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.
The air handler must be permanently grounded.
5.
The ground lug is located in the field wiring box.
Conduit Knockout Locations
119
Top of air
handler
Right side of
air handler
E
A
MODEL A B C D E F
IN CM IN CM IN CM IN CM IN CM IN CM
A*PB24A1
A*PB24B1
A*PB36A1
A*PC48A1
A*PC48B1
A*PC60A1
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
A*PB24A1, A*PB24B1
A*PB36A1
A*PC48A1, A*PC48B1
A*PC60A1
14 37.3 141/436.2 2 5 2 5 4 10.1 4 10.1
14 37.3 14
14
6
1
3/8 41.6
163/8 41.6 221/4 56.5 3 7.6 3 7.6 13/4 4.4 2 5
163/8 41.6 221/4 56.5 3 7.6 3 7.6 13/4 4.4 2 5
1
/436.2 2 5 2 5 4 10.1 4 10.1
37.3
1
4
1
/436.2
2
2
1/4 56.5
5
2
7.6
3
5
2
3 7.6 1
10.1
4
3/4 4.4
10.1
4
5
2
Platform
Height
Inches
Cm
12 30.5
14 35.6
16 40.6
18 45.7
Conduit knockouts
Grounding Lug Location
1110
Field wiring box
(detail)
Grounding lug
Conduit knockouts
7
U
NIT
F
LEXIBLE
T
UBING-HOSE
O
R PIPE
DRAIN
CONNECTION
A POSITIVE LIQUID
SEAL IS REQUIRED
2” MINIMUM
3” MINIMUM
24 VOLT CONTROL SYSTEM
ARNING
W
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.
WARNING
IMPROPER INSTALLATION OF THE ELECTRICAL WIRING
OR THE HEAT ASSEMBLY MAY RESULT IN FIRE, SERIOUS
PERSONAL INJURY, OR DEATH.
Connection to unit
Wire low voltage in accordance with wiring label on the blower.
Use no. 18 AWG wire to make the low voltage connections
between the thermostat, the unit, and the outdoor equipment.
If the thermostat is located more than 100 feet from the unit
use 16 AWG wire. All wiring must be NEC Class 1 and must be
separated from incoming power leads.
The thermostat preheat anticipator should be adjusted to match
the current listed below for the EEC model heat assembly to be
installed.
CONDENSATE DRAIN PLUMBING
CAUTION
or downflow, or any installation where condensate
F
verflow could create a hazard or water damage, the
o
mergency drain fitting MUST be used. The emergency
e
drain MUST be left open. If the emergency drain has to be
piped away from the air handler, its outlet MUST be
installed in a location that would allow any drainage to be
immediately noticed.
Install condensate drain trap as close to the coil as possible.
Use drain connection size or larger. Do not operate unit
without trap (see illustration below.) Unit must be level or
slightly inclined toward drain.
Condensate Drain Trap
1111
THERMOSTAT
TYPE
EEC HEATER MODEL
5 7.5 10 15 20
SINGLE STAGE .4 .4 .4 .8 .8
TWO 1ST N/A N/A N/A .4 .4
STAGE 2ND N/A N/A N/A .4 .4
When used with a heat pump, the heat output must be staged
for models above 10 kW. W1 should be wired as auxiliary heat
to assist the heat pump. W2 must only be wired as emergency
heat. Both stages of heat should never be wired so as to be
energized while the heat pump is operating. See the Blower
Speed/Static Table for maximum allowable auxiliary first-stage
heat. All EEC series electric heat assemblies over 10 kW have
breakers factory-installed on the heat assembly.
Transformer Information
The low-voltage transformer is equipped with a 208- or 230-volt
tap. The transformer is factory wired for 230-volt operation. For
208-volt operation, remove the yellow wire from the 230-volt
terminal and install it onto the 208-volt terminal.
The acceptable voltage range for each tap is as follows:
Tap Voltage Range
230 207 – 253
208 187 – 229
Time Delay Relay Information
A fan relay is provided to control the operation of the indoor
fan motor. All models are equipped with a time delay “OFF”type fan relay which will allow the fan motor to continue to
operate for a preset time after the relay is de-energized.
CAUTION
1. Do not connect the drain line to a closed sewer.
2. Never terminate an open sewer or drain connection
within the return air duct, platform or return plenum.
3. Pitch the drain line at least
1
/4” per foot away from the
drain pan.
4. If condensate drain connection is on the negative side of
the blower, a trap must be installed to ensure positive
drainage.
5. Condensate drain lines should not be reduced in size
from the connection size supplied.
The drain line should be insulated where necessary, to
6.
prevent sweating and damage due to condensate
forming on the outside surface of the line.
7. Test condensate drain line with water before operating
system.
8. If unit is located in or above a living space where
damage may result from condensate overflow, a field
supplied, external condensate pan should be installed
under the entire unit, and a secondary condensate line
(with appropriate trap) should be run from the unit into
the pan. Any condensate in this external condensate
pan should be drained to a noticeable place. As an
alternative to using an external condensate pan, some
localities may allow the running of a separate
condensate line (with appropriate trap) per local code
to a place where the condensate will be noticeable.
8
3
/4”
111
1
111
111
1
Wiring Diagram
1112
POWER SUPPLY TABLE
SINGLE CIRCUIT SUPPLY DUAL CIRCUIT SUPPLY
kW
Phase
No. of
MBTUH
Heat
230 Supply 208/230 Load Wire Fuse Size Size Ampacity Size Ckt1 Ckt2 Ckt3 Ckt1 Ckt2 Ckt3
VAC Circuits Amps Ampacity Size AWG MM
0 1 1 - - 5.0 15 14 2.1
5* 1 1 12.6 / 17.1 20.9 30 30 10 5.3
7.5* 1 1 19.35/25.6 31.3 40 45 8 8.5 10 5.3
10* 1 1 25.6 / 34.1 41.7 57 60 6 13.3
15* 1 1 or 2 38.4 / 51.2 62.5 83 90 4 21.2
1 or 2 51.2 / 68.2 83.4 109 110 2 33.6
1
20*
*kW does not include motor watts.
Ampacities and over current protection based on largest air handler motor load. Refer to specific name plate for exact ampacity and overcurrent protection size.
Minimum wire ampacity values are used for sizing field power conductors. Refer to the National Electrical Code (latest version), Article 310, for sizing conductors. When more than three current-carrying
conductors are in the same conduit, the conductor’s ampacity MUST be derated. See Note 8 of Table 310 for ampacity adjustment factors.
Maximum size fuse or HACR-type circuit breaker for field wiring protection.
Wire size based on 75°C copper wire with no more than three current-carrying conductors in the same conduit. All wiring MUST conform to the National Electrical Code and all local codes.
Min. Max. Wire Ground Min. Wire Max. Fuse Wire Size Ground Size
2
AWG MM2Ckt1 Ckt2 Ckt3 Ckt1 Ckt2 Ckt3 AWG MM2AWG MM2AWG MM2AWG MM2AWG MM2AWG MM
14 2.1 – – – – – – – – – – – – – – – – – –
10 5.3 – – – – – – – – – – – – – – – – – –
––– ––––––––
–
–
–
–
–
–
–
10 5.3 – – – – – – – – – – – – – – – – – –
8 8.4 57 26 – 60 30 – 6 13.3 10 5.3 – – 10 5.3 10 5.3 – –
53 – 60 60 – 6 13.3 6 13.3 – – 10 5.3 10 5.3 – –
57
13.3
6
9
2
INLET WIDTH INLET WIDTH
J
E
D
C
A
B
K
LOW VOLT CONNECTIONS
LOW VOLT CONNECTIONS
LINE VOLTAGE KNOCK OUTS
OUTLET OPENING
H
G
F
I
1113
Dimensions
All dimensions in inches
Models A B C D E F G H I J K
A*PB24A1 2 1/4 3 5/8 13 1/4 15 1/4 43 3/8 15 17 22 18 14 16 1/4
A*PB24B1
A*PB36A1 2 1/4 3 5/8 13 1/4 15 1/4 43 3/8 15 17 22 18 14 16 1/4
A*PC48A1 2 1/4 3 5/8 13 1/4 15 48 1/8 19 1/8 21 26 22 16 3/8 22 1/4
A*PC48B1 2 1/4 3 5/8 13 1/4 15 48 1/8 19 1/8 21 26 22 16 3/8 22 1/4
A*PC60A1
2 1/4 3 5/8 13 1/4 15 1/4
2 1/4
3 5/8
13 1/4
15 17 22 18 14 16 1/4
19 1/8
10
15
43 3/8
48 1/8
21
26
22 16 3/8 22 1/4
Motor Speed
orrect heating and cooling motor speeds MUST be used for proper operation. Refer to the Blower Speed/Static Operation Table
C
elow for correct cooling speed and for minimum allowable heating speed.
b
BLOWER SPEED / STATIC OPERATION TABLE
ESISTANCE HEAT
UNIT
R
MOTOR
SPEED
STATIC PRESSURE (IN. WC) ACROSS
EAT ELEMENT @ MAX. CFM
H
RESISTANCE
HEAT ONLY
AUXILIARY HEAT STAGED
WITH HEAT PUMP
.2 .3 .4 .5 .6
CFM @ EXTERNAL DUCT STATIC (IN. WC)
HIGH 15 kW @ 0.20" 10 kW @ 0.15" 925 900 850 795 690
60 Hz OPERATION
A*PA24A1
A*PA24B1
A*PB36A1
A*PC48A1
A*PC48B1
A*PC60A1
MEDIUM 15 kW @ 0.20" 5 kW @ 0.15" 800 760 745 670 N/A
LOW 10 kW @ 0.15" N/A 655 625 600 N/A N/A
HIGH 15 kW @ 0.20" 10 kW @ 0.15" 905 880 830 780 680
MEDIUM 15 kW @ 0.20" 5 kW @ 0.15" 785 735 730 655 N/A
LOW 10 kW @ 0.15" N/A 645 615 590 N/A N/A
HIGH 20 kW @ 0.25" 10 kW @ 0.15" 1440 1350 1260 1180 1040
MEDIUM 20 kW @ 0.20" 10 kW @ 0.15" 1300 1220 1050 940 860
LOW 20 kW @ 0.15" N/A 1160 1070 950 880 780
HIGH *20 kW @ 0.60" 15 kW @ 0.45" 1680 1640 1590 1520 1430
MEDIUM *20 kW @ 0.50" 15 kW @ 0.40" 1440 1410 1380 1340 1250
LOW *20 kW @ 0.40" 15 kW @ 0.40" 1240 1220 1190 1150 1100
HIGH *20 kW @ 0.60" 15 kW @ 0.45" 2230 2105 1990 1895 1725
MEDIUM *20 kW @ 0.50" 15 kW @ 0.40" 1950 1930 1840 1770 1590
LOW *20 kW @ 0.35" 15 kW @ 0.35" 1360 1350 1340 1185
1080
*Specifications applicable to upflow and horizontal applications
Air flow shown at the following conditions:
• No heat elements in air handler
• Decrease CFM 1% for 5 kW, 7.5 kW, or 10 kW heat kits. Decrease CFM 2% for 15 kW or 20 kW heat kits
• 60 Hertz — 230 volts. Decrease CFM 6% for 208 volt operation
• Standard air handler filter.Dry coil airflow shown
11
ELECTRIC HEATER KIT
This unit is not equipped with an electric heater kit. A
actory approved, field installed UL listed heater package is
f
vailable from your equipment supplier. Heaters that are
a
not factory approved could cause damage which would not
be covered under the equipment warranty.
Installation
nly EEC series electric heat assemblies may be installed into
O
he air handler. Consult installing contractor for the correct
t
electric heat assembly to be installed in each model of air
handler.
For ease of installation, it is recommended that the electric
heat kit be installed before the furnace plenum is installed.
. Cut the wire tie holding the heater plug and unroll the heater
5
plug harness so that it will hang out of the electrical box.
1116
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. Remove the upper access door from the air handler.
2. Remove and discard the field wiring compartment box by
removing the screws that attach it to the right side of the
air handler.
.
1114
Remove two
screws
Remove air
handler field
wiring box
and discard
3. The black and yellow high voltage transformer leads should
be connected to the terminal block or breaker of the heat kit.
4. From the electrical compartment, remove the cover plate
from the element housing.
Heater
plug
6. Carefully slide the heat assembly into the element opening. Be
sure the heater kit or elements do not rub or scrape against the
metal edges or existing components in the electrical box. Guide
the element support rods into the matching holes in the blower
boot.
7. Make sure the assembly is bottomed out against the element
housing. Install the screws provided through the assembly and
into the element housing.
8. Connect the heater plugs to the heater receptacles.
Slide heater element in and secure with three screws. Attach
9.
wires according to wiring diagram on page 9.
1117
Guide the element support rods into
the matching holes in the blower boot
Heater
receptacle
1115
Remove
cover plate
12
AIR HANDLER NOMENCLATURE
A24C1
EE C 15 B 1
*
A
ELECTRIC HEAT ASSEMBLY NOMENCLATURE
MODEL
SERIES
NOMINAL
BTUH
ELECTRIC HEAT
ASSEMBLY SERIES
DESIGN
SERIES
k-WAT
230 VOLTS
B=BREAKER
N= NO BREAKER
1 = 1 PHASE
EVAPORATOR
DESIGNATION
DESIGN
SERIES
REVISION
HEATING SPECIFICATIONS
1120
EATING CORRECTION FACTOR
H
1119
1121
HEATING TEMPERATURE RISE
Formula:
Temp. Rise °F =
3160 = CONSTANT
kW = kW RATING OF UNIT
CFM = AIR FLOW AT SPECIFIED CONDITIONS
Based on 230-volt operation. For voltage other than 230,
multiply temperature rise by capacity correction factor. Refer
to CFM tables to determine Cfm at total external static
pressure in system.
1122
TEMPERATURE RISE °F
CFM
500 19 32
600 16 26 40
700 34 68
800
900 26 35 53 70
1000 32 47 63
1100 29
1200 26 40 53
1300
1400
1500 32 42
1600 30 39
1700 28 37
1800 26 35
1900 25 33
2000
2100 30
260
250
240
230
220
210
200
.7 .8 .9 1.0 1.1
CAPACITY CORRECTION
3160 x kW
CFM
SUPPLY VOLTAGE AT UNIT
For correction of unit output,
multiply the correction factor
times the kW rating at 230 volts.
For correction of temperature
rise, multiply the correction
factor times the rise calculated
for the kW at 230 volts.
TOTAL kW
3 5 7.5 10 15 20
30 40 59
43
36
34 45
FACTOR
57
49
32
13
14
LIMITED WARRANTY
LIMITED FIVE YEAR WARRANTY:
CareCo will provide a replacement part or component
that proves to be defective in material or
workmanship.
WARRANTY LIMITATIONS:
• Limited Warranty does not include allowances for labor
or travel expense connected with the installation of
parts, so furnished in this Limited Warranty or for field
repair, or servicing of the equipment, nor for
refrigerant used
• For warranty purposes the purchase date is established
by a proof of purchase. If a proof of purchase can not
be verified, then warranty period will be measured
from the date of manufacture plus 6 months.
• Cost of repair or replacement of consumable parts is
not covered under the terms of this warranty
• Replacement parts are warranted only for the balance
of the original warranty period
• Applies only to original installation and normal use and
service within the 48 contiguous United States, District
of Columbia and Canada
• Applies to service performed by an authorized servicer
WARRANTY IS VOID IF:
• Serial plate is defaced
• Product has defect or damage due to product
alteration, connection to an improper electrical supply,
shipping and handling, fire, flood, lightning or other
conditions beyond the control of the manufacturer.
• Product is not installed according to instructions and
specifications
• Product is operated in a corrosive environment
containing concentrations of corrosive agents causing
deterioration of components
• Product is operated with refrigerant control device or
component that does not meet specifications
• Product is moved from original installation site
• Filters are not changed per manufacturer’s
reccomendation
OWNER’S RESPONSIBILITIES:
• Provide proof of purchase (sales receipt)
Provide normal care and maintenance as outlined in
•
this manual
• Make product reasonably accessible for service
• Pay for freight, labor and travel expenses
• Pay for premium service costs for service outside
servicer’s normal business hours
Pay for service calls related to product installation and
•
maintenance
THIS WARRANTY DOES NOT COVER DAMAGE
CAUSED BY:
• Improper installation
• Misuse of equipment
• Negligent servicing
Improper applications
•
Preventative maintenance
•
• Unauthorized modifications
• Improper electrical supply
• Failure to follow manufacturer’s instructions and rating
plate information
• Accidents or other events beyond manufacturer’s control
ENTIRE WARRANTY:
THE ABOVE CONTAINS THE SOLE AND EXCLUSIVE
STATEMENT OF THE EXPRESS WARRANTIES AND
ASSOCIATED REMEDIES AVAILABLE WITH THE
PRODUCTS DESCRIBED. NO OTHER EXPRESS
WARRANTIES ARE MADE. ALL IMPLIED
WARRANTIES, INCLUDING BUT NOT LIMITED TO
ANY IMPLIED WARRANTY OF MERCHANTABILITY
OR FITNESS FOR A PARTICULAR PURPOSE, OR
IMPLIED WARRANTIES OTHERWISE ARISING FROM
COURSE OF DEALING OR USAGE OF TRADE ARE
LIMITED IN DURATION TO ONE YEAR FROM THE
DATE OF ORIGINAL PURCHASE. IN NO EVENT SHALL
MANUFACTURER BE LIABLE FOR ANY INDIRECT,
INCIDENTAL OR CONSEQUENTIAL DAMAGES, EVEN
IF ADVISED IN ADVANCE OF THE POSSIBILITY OF
SUCH DAMAGES. NO WARRANTIES, EXPRESS OR
IMPLIED, ARE MADE TO ANY BUYER UPON RESALE.
SOME STATES DO NOT ALLOW LIMITATIONS ON HOW
LONG AN IMPLIED WARRANTY LASTS OR DO NOT
ALLOW THE EXCLUSION OR LIMITATION OF
INCIDENTAL OR CONSEQUENTIAL DAMAGES, SO THE
ABOVE LIMITATIONS MAY NOT APPLY TO YOU. THIS
WARRANTY GIVES YOU SPECIFIC LEGAL RIGHTS, AND
YOU MAY ALSO HAVE OTHER RIGHTS, WHICH MAY
VARY FROM STATE TO STATE. NO WARRANTIES ARE
MADE FOR UNITS SOLD OUTSIDE THE ABOVE STATED
AREAS. YOUR DISTRIBUTOR OR FINAL SELLER MAY
PROVIDE A WARRANTY ON UNITS SOLD OUTSIDE OF
THESE AREAS.
The information in this manual supersedes and replaces the previous instruction/operation manual with regards to air handler
products. Illustrations cover the general appearance of the units at the time of publication and the manufacturer reserves the right
to make changes in design and construction at any time without notice.
For replacement parts, please consult the installing dealer or contractor.
REV. 04/07
23-23-0403N-017
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