Heat Controller Comfort-Aire BD-81 User manual

Through-The-Wall
Air Conditioning
Important Information
• Pleasereadcarefullyandthoroughlythismanualbeforeoperatingthisunit.
• Contactaqualifiedsevicetechnicianforinstallation,repairandmaintenanceofthisunit.
• Theapplianceisnotintendedforusebyyoungchildrenorthosewhorequiresupervision.
• Youngchildrenshouldbesupervisedtoensurethattheydonotplaywiththeappliance.
HEAT CONTROLLER, INC.
Models: BD-81
BD-101
BD-123
BDE-103
BDE-123

—2—
1. PREFACE
1.1 SAFETY PRECAUTIONS ...............................2
1.2 INSULATION RESISTANCE TEST.................2
1.3 SPECIFICATIONS ..........................................3
1.4 FEATURES.....................................................6
1.5 CONTROL LOCATIONS.................................6
2.
DISASSEMBLY INSTRUCTIONS
2.1 MECHANICAL PARTS....................................8
2.1.1 FRONT GRILLE.....................................8
2.1.2 CABINET................................................8
2.1.3 CONTROL BOX.....................................8
2.2 AIR HANDLING PARTS..................................9
2.2.1
ORIFICE, HEATER ASSY AND TURBO FAN .........9
2.2.2 FAN........................................................9
2.2.3 SHROUD..............................................10
2.3 ELECTRICAL PARTS...................................10
2.3.1 MOTOR................................................10
2.3.2 COMPRESSOR...................................10
2.3.3 CAPACITOR........................................10
2.3.4 POWER CORD....................................11
2.3.5 THERMOSTAT ....................................11
2.3.6 ROTARY SWITCH...............................11
2.4 REFRIGERATION CYCLE............................12
2.4.1 CONDENSER......................................12
2.4.2 EVAPORATOR....................................12
2.4.3 CAPILLARY TUBE...............................12
3.
INSTALLATION
3.1 INSTALLATION REQUIREMENTS...............15
3.2 INSTALLATION.............................................16
3.3 PROCEDURE A............................................17
3.4 PROCEDURE B............................................18
3.5 PROCEDURE C............................................20
3.4 ELECTRICAL REQUIREMENTS..................22
3.4.1 ELECTRICAL DATA(FOR 115V MODEL) .....22
3.4.2 ELECTRICAL DATA(FOR 230V/208 MODEL) ......22
3.4.3 ELECTRICAL SAFETY........................22
4.
TROUBLESHOOTING GUIDE
4.1 OUTSIDE DIMENSIONS...............................23
4.2 PIPING SYSTEM ..........................................23
4.3 TROUBLESHOOTING GUIDE......................24
5. SCHEMATIC DIAGRAM
5.1 CIRCUIT DIAGRAM......................................29
6. EXPLODED VIEW..................................31
7. REPLACEMENT PARTS LIST.......32
1. PREFACE
This SERVICE MANUAL provides various service information, including the mechanical and electrical
parts etc. This room air conditioner was manufactured and assembled under a strict quality control system.
The refrigerant is charged at the factory. Be sure to read the safety precautions prior to servicing the unit.
1.1 SAFETY PRECAUTIONS
1. When servicing the unit, set the ROTARY SWITCH
or POWER SWITCH to OFF(O) and unplug the
power cord.
2. Observe the original lead dress.
If a short circuit is found, replace all parts which
have been overheated or damaged by the short
circuit.
3. After servicing the unit, make an insulation
resistance test to protect the customer from being
exposed to shock hazards.
1.2 INSULATION RESISTANCE TEST
1. Unplug the power cord and connect a jumper
between 2 pins (black and white).
2. The grounding conductor (green or green & yellow)
is to be open.
3. Measure the resistance value with an ohm meter
between the jumpered lead and each exposed
metallic part on the equipment at all the positions
(except OFF or O) of the ROTARY SWITCH or
POWER SWITCH.
4. The value should be over 1MΩ.
CONTENTS

—3—
1.3 SPECIFICATIONS
1.3.1 FOR BD-81/BD-101
POWER SUPPLY 1Ø, 115V, 60Hz
COOLING CAPACITY (Btu/h) 8,000 10,000
INPUT (W) 800 1,050
RUNNING CURRENT (A) 7.5 9.8
E.E.R (Btu/w.h) 10.0 9.5
REFRIGERANT (R-22) CHARGE(g) 380(13.2 OZ) 410(14.5 OZ)
INDOOR (°C) 26.7(DB) 19.4(WB)
OUTDOOR (°C) 35(DB) 23.9(WB)
EVAPORATOR 2 ROW 12 STACKS
CONDENSER
FAN, INDOOR TURBO FAN
FAN, OUTDOOR PROPELLER TYPE FAN WITH SLINGER-RING
FAN SPEEDS, FAN/COOLING 3/3
FAN MOTOR 6 POLES
OPERATION CONTROL ELECTRIC
ROOM TEMP. CONTROL THERMISTOR
VERTICAL LOUVER(RIGHT & LEFT)
HORIZONTAL LOUVER(UP & DOWN)
CONSTRUCTION TOP-DOWN
COMPRESSOR
FAN MOTOR INTERNAL THERMAL PROTECTOR
1.6m (3WIRE WITH GROUNDING)
ATTACHMENT PLUG(CORD-CONNECTED TYPE)
DRAIN SYSTEM SPLASHED BY FAN SLINGER
NET WEIGHT (lbs/kg) 72/33 79/36
DIMENSION (inch)
(W x H x D) (mm)
SLEEVE DIMESION (inch)
(W x H x D) (mm)
SLEEVE DEPTH (inch)
WITH FRONT GRILLE (mm)
MODELS
BD-81 BD101 REMARK
ITEMS
AIR DIRECTION CONTROL
PROTECTOR
POWER CORD
OPERATING
TEMPERATURE
LOUVERED-
FIN TYPE
OPTIONAL
PART
2 ROW 17 STACKS, L-BENDED TYPE
EXTERNAL OVERLOAD PROTECTOR
2421/32 x 1413/32 x 1921/32
626 x 366 x 499
257/8x 1517/32 x 1623/32
656 x 394 x 425
20
510

—4—
1.3.2 FOR BD-123
REMARK
POWER SUPPLY
COOLING CAPACITY (Btu/h)
INPUT (W)
RUNNING CURRENT (A)
E.E.R. (Btu/W.h)
INDOOR (°C)
OUTDOOR (°C)
REFRIGERANT (R-22) CHARGE(g)
EVAPORATOR
CONDENSER
FAN, INDOOR
FAN, OUTDOOR
FAN SPEEDS (FAN/COOLING/HEATING)
FAN MOTOR
OPERATION CONTROL
ROOM TEMP. CONTROL
CONSTRUCTION
COMPRESSOR
FAN MOTOR
DRAIN SYSTEM
NET WEIGHT (lbs/kg)
DIMENSION (inch)
(W x H x D) (mm)
SLEEVE DIMESION (inch)
(W x H x D) (mm)
SLEEVE DEPTH (inch)
WITH FRONT GRILLE (mm)
1Ø, 208/ 230V, 60Hz
11,400/11,700
1,200/1,230
6.2/5.8
9.5
26.7 (DB) 19.4 (WB)
35 (DB) 23.9 (WB)
465(16.4 OZ)
2 ROW 11 STACKS
2 ROW 17 STACKS, L-BENDED TYPE
TURBO FAN
PROPELLER TYPE FAN WITH SLINGER-RING
3/3
6 POLES
ELECTRIC
THERMISTOR
VERTICAL LOUVER (RIGHT & LEFT)
HORIZONTAL LOUVER (UP & DOWN)
TOP-DOWN
EXTERNAL OVERLOAD PROTECTOR
INTERNAL THERMAL PROTECTOR
1.6m (3 WIRE WITH GROUDING)
ATTACHMENT PLUG (CORD-CONNECTED TYPE)
SPLASHED BY FAN SLINGER
80/37
2421/32 x 1413/32 x 1921/32
626 x 366 x 499
257/8x 1517/32 x 1623/32
656 x 394 x 425
20
510
MODELS
ITEMS
OPERATING
TEMPERA-TURE
AIR DIRECTION CONTROL
POWER CORD
PROTECTOR
LOUVERED-
FIN TYPE
BD-123
OPTIONAL
PART

REMARK
POWER SUPPLY
CAPACITY (Btu/h)
INPUT (W)
RUNNING CURRENT (A)
E.E.R. (Btu/W.h)
CAPACITY (Btu/h)
INPUT (W)
RUNNING CURRENT (A)
INDOOR (°C)
OUTDOOR (°C)
INDOOR (°C)
OUTDOOR (°C)
REFRIGERANT (R-22) CHARGE(g)
EVAPORATOR
CONDENSER
FAN, INDOOR
FAN, OUTDOOR
FAN SPEEDS (FAN/COOLING/HEATING)
FAN MOTOR
OPERATION CONTROL
ROOM TEMP. CONTROL
CONSTRUCTION
ELECTRIC HEATER
COMPRESSOR
FAN MOTOR
ELECTRIC HEATER
DRAIN SYSTEM
NET WEIGHT (lbs/kg)
DIMENSION (inch)
(W x H x D) (mm)
SLEEVE DIMESION (inch)
(W x H x D) (mm)
SLEEVE DEPTH (inch)
WITH FRONT GRILLE (mm)
—5—
1.3.3 FOR BDE-103/BDE-123
1Ø, 208/ 230V, 60Hz
9,800/10,000 11,400/11,700
1,030/1,050 1,200/1,230
5.2/4.7 6.2/5.8
9.5 9.5
9,200/11,200
2,900/3,500
14.0/15.3
26.7 (DB) 19.4 (WB)
35 (DB) 23.9 (WB)
21.1 (DB) 15.6 (WB)
8.3 (DB) 6.1 (WB)
440(15.5 OZ) 465(16.4 OZ)
2 ROW 12 STACKS 2 ROW 11 STACKS
2 ROW 17 STACKS, L-BENDED TYPE
TURBO FAN
PROPELLER TYPE FAN WITH SLINGER-RING
1/ 2/ 2
6 POLES
ROTARY SWITCH
THERMOSTAT
VERTICAL LOUVER (RIGHT & LEFT)
HORIZONTAL LOUVER (UP & DOWN)
TOP-DOWN
3.5KW, 208/230V
EXTERNAL OVERLOAD PROTECTOR
INTERNAL THERMAL PROTECTOR
FUSE LINK, BIMETAL THERMOSTAT
1.6m (3 WIRE WITH GROUDING)
ATTACHMENT PLUG (CORD-CONNECTED TYPE)
SPLASHED BY FAN SLINGER
80/36 81/37
2421/32 x 1413/32 x 1921/32
626 x 366 x 499
257/8x 1517/32 x 1623/32
656 x 394 x 425
20
510
MODELS
ITEMS
OPERATING
TEMPERA-
TURE
AIR DIRECTION CONTROL
POWER CORD
PROTECTOR
HEATING
COOLING
COOLING
HEATING
LOUVERED-
FIN TYPE
BDE-103 BDE-123
OPTIONAL
PART

1.4 FEATURES
• Designed for cooling only.
• Powerful and quiet cooling.
• Top-down chassis for the simple installation and service.
1.5 CONTROL LOCATIONS
1.5.1 COOLING ONLY MODEL
• OPERATION
• VENTILATION
Push the lever to the "CLOSE" position to cool, heat or
recirculate room air only.
Pull the lever to the "OPEN" position to exhaust smoke or
stale air from the room.
This feature is best used in conjunction with the FAN ONLY
position.
• Side air-intake, side cooled-air discharge.
• Built in adjustable THERMISTOR and THERMOSTAT.
• Washable one-touch filter.
• Compact size.
—6—
PULL OPEN / PUSH CLOSE
REMOTE CONTROL SIGNAL RECEIVER
POWER
MODE
- Every time you push this button, the air conditioner alternates between COOL, MONEY SAVER®and FAN.
- MONEY SAVER:
•The fan stops when the compressor stops cooling. Approximately every 3 minutes the fan will turn on and the unit will
check the room air to determine if cooling is needed.
TIMER
- SHUT-OFF TIME
•You will usually use shut-off time while you sleep.
•With unit running, use Timer to set number of hours until
shut-off.
•For your sleeping comfort, once Time is set, the
Temperature setting will raise 2°F after 30 min., and 2°F
after another 30 min.
•Every time you push Timer button, it advances the Timer
setting as follows: 1 Hour
→ 2 Hours →
.... →
12 Hours
maximum.
- START TIME
•With unit not running, use Timer to set number of hours
before unit starts.
•Every time you push Timer button, it advances the Timer
setting as follows: 1 Hour
→ 2 Hours →
.....
→ 12 Hours
maximum.
TEMPERATURE SETTING
•Use this button to automatically control the temperature of
the room.
The temperature can be set within a range of 60°F to 86°F by
increments of 1°F.
•To turn the air conditioner ON, push this button.
To turn the air conditioner OFF, push the button again.
•This button takes priority over any other button.
•When you first turn it on, the unit is in cool mode, at High
fan speed, and set at a temperature setting of 72°F.
FAN SPEED
•Every time you push this button, it advances the setting as
follows:
{High →Low →Med →High}

1.5.2 COOLING AND HEATING MODEL
•OPERATION
—7—
A slight burning odor may come from the unit
when first switching to HEAT after the cooling
season is over. This odor, caused by fine dust
particles on the heater, will disappear quickly.
This is normal operation.
Off - Turns the air conditioner off.
Fan Only - The low fan speed operation without cooling (heating).
Low Cool - Cooling with the low speed fan operation.
High Cool - Cooling with the high speed fan operation.
Low Heat - Heating with the low speed fan operation.
High Heat - Heating with the high speed fan operation.
Turn the Temperature Knob to the desired setting. The central position is a normal
setting for average conditions. You can change this setting, if necessary, in
accordance with your temperature preference.
The thermostat automatically controls cooling or heating, but the fan runs
continuously whenever the air conditioner is in operation. If the room is too warm,
turn the thermostat control clockwise. If the room is too cool, turn the thermostat
control counterclockwise.
When the air conditioner has been operating in the
cooling or heating mode and is turned off or set to the fan
only position, wait at least 3 minutes before resetting to
the cooling operation again.
CAUTION

—8—
2.1 MECHANICAL PARTS
2.1.1 FRONT GRILLE
1. Open the inlet grille downward.
2. Remove the screw which fastens the front grille.
3. Pull the front grille from the right side.
4. Remove the front grille. (See Fig. 1)
5. Re-install the component by referring to the
removal procedure.
2.1.2 CABINET
1. After disassembling the FRONT GRILLE, remove
the 9 screws which fasten the cabinet at the both
sides and the top. (See Fig. 2)
Keep these for later use.
2.1.3 CONTROL BOX
1. Remove the front grille. (Refer to section 2.1.1)
2. Remove the screw which fasten the control
box. (See Fig. 3)
3. Pull the control box from the barrier.(See Fig.3)
4. Discharge the capacitor by placing a 20,000 ohm
resistor across the capacitor terminals.
5. Disconnect two wire housings in the control box.
6. Pull the control box forward completely.
7. Re-install the components by referring to the
removal procedure. (See Fig. 3)
(Refer to the circuit diagram found on pages
29~30 in this manual and on the control box.)
2. DISASSEMBLY INSTRUCTIONS
—Prior to disassembling the unit, make sure that the POWER switch is set to OFF and the power cord is
unplugged from the wall receptacle.
Figure 1
Figure 2
Figure 3

Figure 7
—9—
2.2 AIR HANDLING PARTS
2.2.1 ORIFICE, HEATER ASSY AND
TURBO FAN
1. Remove the front grille. (Refer to section 2.1.1)
2. Remove the cabinet. (Refer to section 2.1.2)
3. Remove the 2 screws which fasten the
evaporator at the left side and the right side.
(See Fig. 4)
4. Move the evaporator sideward carefully.
5. Remove the 2 terminals carefully
(See Fig. 5, Electric Heater Model only)
6. Remove the 4 screws which fasten the orifice.
(See Fig. 5)
7. Remove the orifice. (See Fig. 5)
8. Using handheld pliers, remove the clamp which
secures the turbo fan. (See Fig. 6)
9. Remove the turbo fan with pliers or your hand,
without touching blades. (See Fig. 7)
10. Re-install the components by referring to the
removal procedures, above.
2.2.2 FAN
1. Remove the cabinet. (Refer to section 2.1.2)
2. Remove the brace and shroud cover.
(Refer to section 2.2.1)
3. Remove the 6 screws which fasten the condenser.
4. Move the condenser sideways carefully.
5. Using handheld pliers, remove the clamp which
secures the fan.
6. Remove the fan. (See Fig. 8)
7. Re-install the components by referring to the
removal procedures, above.
Figure 4
Figure 5
Figure 6
Figure 8

—10—
2.2.3 SHROUD
1. Remove the fan. (Refer to section 2.2.2)
2. Remove the screw which fastens the shroud.
3. Remove the shroud. (See Fig. 9)
4. Re-install the components by referring to the
removal procedures, above.
2.3 ELECTRICAL PARTS
2.3.1 MOTOR
1. Remove the cabinet. (Refer to section 2.1.2)
2. Remove the clamp cord and disconnect the wire
housing in control box. (Refer to section 2.1.3)
3. Remove the turbo fan. (Refer to section 2.2.2)
4. Remove the fan. (Refer to section 2.2.2)
5. Remove the 4 or 2 screws which fasten the motor.
(See Fig. 10)
6. Remove the motor.
7. Re-install the components by referring to the
removal procedures, above.
2.3.2 COMPRESSOR
1. Remove the cabinet. (Refer to section 2.1.2)
2. Discharge the refrigerant system using a FreonTM
Recovery System.
If there is no valve to attach the recovery system
to, install one (such as a WATCO A-1) before
venting the FreonTM . Leave the valve in place after
servicing the system.
3. Disconnect the 3 leads from the compressor.
4. After purging the unit completely, unbraze the
suction and discharge tubes at the compressor
connections.
5. Remove the 3 nuts and the 3 washers which
fasten the compressor. (See Fig. 11)
6. Remove the compressor.
7. Re-install the components by referring to the
removal procedures, above.
2.3.3 CAPACITOR
1. Remove the control box. (Refer to section 2.1.3)
2. Remove knobs and the tips which fasten the
display panel.
3. Disconnect the 2 leads from the rocker switch and
remove the panel (Energy saver model only).
4. Remove 2 screws and unfold the control box.
(See Fig. 12)
5. Remove the Rotary Switch.
6. Remove the screw and the clamp which fastens
the capacitor. (See Fig. 12)
7. Disconnect all the leads on the capacitor terminals.
8. Re-install the components by referring to the
removal procedures, above.
Figure 9
Figure 10
Figure 11
Figure 12

—11—
2.3.4 POWER CORD
1. Remove the control box. (Refer to section 2.1.3)
2. Unfold the control box. (Refer to section 2.3.3)
3. Disconnect the grounding screw from the control
box.
4. Disconnect 2 receptacles.
5. Remove a screw which fastens the clip cord.
6. Pull the power cord. (See Fig. 13)
7. Re-install the components by referring to the
removal procedure, above.
(Use only one ground-marked hole, , for ground
connection.)
8. If the supply cord of this appliance is damaged, it
must be replaced with the factory-authorized and
specified cord.
2.3.5 THERMOSTAT
1. Remove the control box. (Refer to section 2.1.3)
2. Unfold the control box. (Refer to section 2.3.3)
3. Remove the 2 screws which fasten the thermostat.
4. Disconnect all the leads of thermostat terminals.
5. Remove the thermostat. (See Fig. 14)
6. Re-install the components by referring to the
removal procedures, above.
2.3.6 ROTARY SWITCH
1. Remove the control box. (Refer to section 2.1.3)
2. Unfold the control box. (Refer to section 2.3.3)
3. Remove 2 screws which fasten the rotary switch.
4. Disconnect all the leads of the rotary switch
terminals.
5. Remove the rotary switch. (See Fig. 15)
6. Re-install the components by referring to the
removal procedure, above.
Figure 13
Figure 14
Figure 15

—12—
2.4 REFRIGERATION CYCLE
2.4.1 CONDENSER
1. Remove the cabinet. (Refer to section 2.1.2)
2. Remove the brace and the shroud cover.
(Refer to section 2.2.1)
3. Remove the 5 screws which fasten the condenser.
4. After discharging the refrigerant completely into a
FreonTM Recovery System, unbraze the
interconnecting tube at the condenser
connections.
5. Remove the condenser.
6. Re-install the components by referring to the notes
–on pages 13-14. (See Fig. 16)
2.4.2 EVAPORATOR
1. Remove the cabinet. (Refer to section 2.1.2)
2. Discharge the refrigerant completely –into a
FreonTM Recovery System.
3. Remove the 2 screws which fasten the evaporator
at the left side and the right side.
4. Move the evaporator sideward carefully and then
unbraze the interconnecting tube at the evaporator
connectors.
5. Remove the evaporator.
6. Re-install the components by referring to the notes
–on pages 13-14. (See Fig. 17)
2.4.3 CAPILLARY TUBE
1. Remove the cabinet. (Refer to section 2.1.2)
2. After discharging the refrigerant completely –into
a FreonTM Recovery System, unbraze the
interconnecting tube at the capillary tube.
3. Remove the capillary tube.
4. Re-install the components by referring to the notes
–on page 13-14.
Figure 16
Figure 17
Discharge the refrigerant system using a FreonTM
Recovery System.
If there is no valve to attach the recovery system,
install one (such as a WATCO A-1) before
venting the FreonTM. Leave the valve in place
after servicing the system.
CAUTION

—13—
—Replacement of the refrigeration cycle.
1. When replacing the refrigeration cycle, be sure to
discharge the refrigerant system using a FreonTM
recovery System.
If there is no valve to attach the recovery system,
install one (such as a WATCO A-1) before venting
the FreonTM. Leave the valve in place after
servicing the system.
2. After discharging the unit completely, remove the
desired component, and unbrace the pinch-off
tubes.
3. Solder service valves into the pinch-off tube ports,
leaving the valves open.
4. Solder the pinch-off tubes with Service valves.
5. Evacuate as follows.
1) Connect the vacuum pump, as illustrated Fig.
18A.
2) Start the vacuum pump, slowly open manifold
valves A and B with two full turns
counterclockwise and leave the valves closed.
The vacuum pump is now pulling through valves
A and B up to valve C by means of the manifold
and entire system.
3) Operate the vacuum pump for 20 to 30 minutes,
until 600 microns of vacuum is obtained. Close
valves A and B, and observe vacuum gauge for
a few minutes. A rise in pressure would
indicate a possible leak or moisture remaining in
the system. With valves A and B closed, stop
the vacuum pump.
4) Remove the hose from the vacuum pump and
place it on the charging cylinder. See Fig. 18B.
Open valve C.
Discharge the line at the manifold connection.
5) The system is now ready for final charging.
6. Recharge as follows :
1) Refrigeration cycle systems are charged from the
High-side. If the total charge cannot be put
in the High-side, the balance will be put in the
suction line through the access valve which you
installed as the system was opened.
2) Connect the charging cylinder as shown in Fig. 18B.
With valve C open, discharge the hose at the
manifold connection.
3) Open valve A and allow the proper charge to
enter the system. Valve B is still closed.
4) If more charge is required, the high-side will not
take it. Close valve A.
5) With the unit running, open valve B and add the
balance of the charge.
a. Do not add the liquid refrigerant to the Low-
side.
b. Watch the Low-side gauge; allow pressure to
rise to 30 lbs.
c. Turn off valve B and allow pressure to drop.
d. Repeat steps B and C until the balance of the
charge is in the system.
6) When satisfied the unit is operating correctly,
use the pinch-off tool with the unit still running
and clamp on to the pinch-off tube. Using a tube
cutter, cut the pinch-off tube about 2 inches from
the pinch-off tool. Use sil-fos solder and solder
pinch-off tube closed. Turn off the unit, allow it to
set for a while, and then test the leakage of the
pinch-off connection.
NOTES
If high vacuum equipment is used, just crack
valves A and B for a few minutes, then open
slowly with the two full turns counterclockwise.
This will keep oil from foaming and being
drawn into the vacuum pump.
CAUTION

—14—
Equipment needed: Vacuum pump, Charging cylinder, Manifold gauge, Brazing equipment. Pinch-off tool
capable of making a vapor-proof seal, Leak detector, Tubing cutter, Hand Tools to remove components, Service
valve.
A
COMPOUND GAUGE
EVAPORATOR
(LOW PRESSURE SIDE)
COMPRESSOR
CAPILLARY TUBE
CONDENSER
(HIGH PRESSURE SIDE)
SEE INSETS
BELOW
MANIFOLD
GAUGE
B
Figure 18A-Pulling Vacuum Figure 18B-Charging
A
B
EXTERNAL
VACUUM PUMP
A
CHARGING
CYLINDER
LOW HI
B
C

—15—
3. INSTALLATION
3.1 INSTALLATION REQUIREMENTS
If you use an existing wall sleeve, you should measure its
dimensions.
Install the new air conditioner according to these installation
instructions to achieve the best performance. All wall sleeves
used to mount the new air conditioner must be in good
structural condition and have a compatible rear grille in order
to securely attach the new air conditioner. (FIG. 19A)
With the FRIEDRICH USC sleeve, you can maintain the
best performance of the new air conditioner. (FIG. 19B)
ELECTRICAL SERVICE
Check your available electrical service. The power supply
available must be the same as that shown on the unit
nameplate (found on left side of cabinet).
All models are equipped with a 3-prong service plug to
provide proper service and safe positive grounding. Do not
change plug in any way. Do not use an adapter plug. If your
present wall outlet does not match your plug, call a qualified
electrician to make the necessary corrections. SAVE
CARTON for storage and this OWNER'S MANUAL for future
reference. The carton is the best way to store unit during
winter or when not in use.
INSTALLATION HARDWARE
14
5
6
7
3
2
8
2 Size options
2 Size options
To avoid risk of personal injury, property damage, or
product damage due to the weight of this device and sharp
edges that may be exposed:
•Air conditioners covered in this manual pose an
excessive weight hazard. Two or more people are
needed to move and install the unit.
To prevent injury or strain, use proper lifting and carrying
techniques when moving unit.
•Carefully inspect location where air conditioner will be
installed. Be sure it will support the weight of the unit
over an extended period of time.
•Handle air conditioner with care. Wear protective gloves
whenever lifting or carrying the unit. AVOID the sharp
metal fins of front and rear coils.
•Make sure air conditioner does not fall during installation.
CAUTION
REQUIRED TOOLS:
•Tight Fitting gloves
•Standard screwdriver
•Phillips screwdriver
•Pliers
•Sharp knife
•3/8-inch open end
wrench or adjustable
wrench
•1/4-inch hex socket
and ratchet
•Tape measure
•Electric drill
•1/4-inch drill bit
ITEM NAME OF PARTS Q'TY
1 PLASTIC GRILLE 1
2 HORIZONTAL INSULATION STRIPS 2
3 AROUND INSULATION STRIPS 2
4 SUPPORT BLOCK 2
5 BAFFLE 1
6 TRIM FRAME 2
7 SHIM 2
8 PLASTIC NUTS AND WASHER SCREWS 4
14-
13
/ 32 "
(366 mm)
24-
21
/ 32 "
(626 mm)
18"(458 mm)
19-
21
/ 32 "
(499 mm)
FIG. 19A
Air Conditioner
15-
17
/ 32 "
(394 mm)
16-
23
/ 32 "
(425 mm)
25-
7
/ 8 "
(656 mm)
Expanded
aluminum metal grille
FIG. 20B
FRIEDRICH USC Wall Sleeve

—16—
3.2 INSTALLATION
•Pick a location which will allow the conditioned air to
blow into the area you want. Good installation with
special attention to the proper position of the unit will
lessen the chance that service will be needed.
ITEMS IN INSTALLATION HARDWARE
You may not need all parts in the kit. Discard unused
parts
HOW TO INSTALL
Before installing the unit, identify the existing wall sleeve
from the list below.
NOTE: All wall sleeves used to mount the new Air
Conditioner must be in sound structural condition and
have a compatible rear grille that securely attaches to
sleeve, or rear flange that serves as a stop for the Air
Conditioner.
Remove old air conditioner from existing wall
sleeve.
Clean the interior of an existing sleeve.
(Do not disturb existing seals or gaskets.)
Wall sleeve must be securely fastened in wall
before installing the air conditioner. Use the nails
or screws through the sides of the sleeve into wall,
if needed. Repaint sleeve if needed.
Prepare the wall sleeve for installation of the unit.
If you plan to use your existing wall sleeve, and it
is not the FRIEDRICH USC sleeve, use procedure
B or C below.
Install new unit into wall sleeve.
CAUTION: When installation is completed,
replacement unit MUST have a rearward slope as
shown.
ITEM (inches) Qty.
Plastic grille 263/4x 161/21
Horizontal Insulation Strips
13/8x 5/8x 273/16 1
13/8x 13/8x 273/16 1
Around Insulation Strips
13/8x 3/4x 611/21
13/8x 13/8x 611/21
Support Block 13/4x 13/8x 45/16 2
Baffle 14 x 41/2 x
1/81
Shim 13 x 1 x 3/42
Trim Frame 2
Washer Screw 4
Nuts(Plastic) 4
1
2
3
4
5
6
1/4"
Wall Sleeve
FRONT
UNIT
FIG. 20
We strongly recommend the removal of the
old wall sleeve and the installation of a new
FRIEDRICH USC Wall Sleeve.
If you decide to keep the existing wall sleeve,
you have to redirect the louvers at the back of
the wall sleeve illustration. The use of pliers is
recommended. If you DO NOT redirect, you run
the risk of poor performance or product failure.
This is not covered under the terms of the
FRIEDRICH warranty.
CAUTION
Procedure
Brand Depth(inches)
A FRIEDRICH USC 16-23/32
White-Westinghouse
Frigidaire Carrier 16, 17-1/2
(52F series) or 22
BGeneral Electric 16-7/8
/Hotpoint
Whirlpool 17-1/8 or 23
Carrier (51S series) 18-5/8
Fedders/Emerson 16-3/4
or 19-3/4
CEmerson/Fedders 15
Wall Sleeve Dimensions (inches)
Brand Width Height Depth
White-Westinghouse 25-1/2 15-1/4 16, 17-1/2
Frigidaire or 22
Carrier (52F series)
General Electric 26 15-5/8 16-7/8
/Hotpoint
Whirlpool 25-7/8 16-1/2 17-1/8
or 23
Fedders/Emerson
Friedrich WSC 27 16-3/4 16-3/4
or 19-3/4
FRIEDRICH USC 25-7/8 15-17/32 16-23/32
Emerson/Fedders 26-3/4 15-3/4 15
Carrier (51S Series) 25-3/4 16-7/8 18-5/8

—17—
3.3 PROCEDURE A
If you are using a new USC sleeve in conjunction
with your unit, skip to step 3. Otherwise, install the
plastic grille from the kit. Cut the plastic grille to fit
the rear opening of the existing sleeve. Place the
plastic grille to the inside of the wall sleeve at the
rear flange.
Fasten the 4 washer screws to secure the grille to
the wall sleeve. If you need plastic nuts to mount
plastic grille to the inside of the wall sleeve, there
are plastic nuts in the installation kit. The nuts are
installed from the inside of the sleeve and are
pressed into the square holes of the rear flanges.
Ensure that the inside of the sleeve is thoroughly
clean. Remove the backing from the Horizontal
Insulation strip 13/8x 3/8x 273/16 and attach that to
the inside bottom of the sleeve as shown below.
Remove the backing from the Around Insulation
strip 13/8x 3/4x 611/2and attach that to the inside
front of the sleeve as shown below.
Install the new unit into the wall sleeve.
To assemble trim, snap the tab of each piece into
the slot of the other piece as shown below. Slide
trim over the front of the air conditioner until trim is
flush with sleeve as shown below.
FIG. 21
Around Insulation
Horizontal Insulation
FIG. 23
or
FIG. 22
1
2
3
4
5
Trim (2 ea)
Wall
FIG. 24
•Air conditioners covered in this manual pose
an excessive weight hazard. Two or more
people are needed to move and install the
unit.
To prevent injury or strain, use proper lifting
and carrying techniques when moving unit.
•When handling the air conditioner, be careful
to avoid cuts from sharp metal fins on front
and rear coils.
•Make sure air conditioner does not fall during
removal.
CAUTION

—18—
3.4 PROCEDURE B
Redirect the louvers at the back of the wall sleeve
to 60°angle as shown in the FIG 25. The use of
pliers is recommended.
If the wall sleeve already has a rear grille, skip to
step 4. If the wall sleeve does not have a rear grille
or louvered panel, install the plastic grille from the
kit. Cut the plastic grille to 25-1/2" wide and 15-1/4"
high. Place the plastic grille to the inside of the wall
sleeve at the rear flange.
Fasten the 4 washer screws to secure the grille to
the wall sleeve. If you need plastic nuts to mount
plastic grille to the inside of the wall sleeve, there
are plastic nuts in the installation kit. The nuts are
installed from the inside of the sleeve and are
pressed into the square holes of the rear flanges.
Remove the backing from the Horizontal Insulation
strip 13/8x 5/8x 273/16 and attach that to the inside
bottom of the sleeve as shown below. Remove the
backing from the Around Insulation strip 13/8x 3/4x
611/2and attach that to the inside front of the
sleeve as shown below.
If the depth of your existing wall sleeve is less than
or equal to 18", skip to step 7. Otherwise, cut the
baffles and the support blocks according to length
"A" in the table below.
Remove the backing from the support blocks and
attach them to the inside of the wall sleeve as
shown FIG 30. Slide the baffle into slots of the
support blocks.
Install the new unit into the wall sleeve.
14
2
FIG. 26
Around Insulation
Horizontal Insulation
FIG. 28
or
FIG. 27
Rear Louvers
(Top View)
60°60°
7 5/16"
FIG. 25
Wall
Wall
Sleeve
Baffle
(7 5/16")
Front Support
Block
FIG. 30
Depth"D" of the existing
wall sleeve (inches)
Length "A"
(inches)
Support
Block
Baffle
A
A
3/4
1-3/4
4
18 D 18-5/8
18-
5
/ 8 D 19-
3
/ 4
19-3/4 D 22
5
6
7
Place the plastic grille
Fasten the screws
FIG. 29
3

—19—
PROCEDURE B
To assemble trim, snap the tab of each piece into
the slot of the other piece as shown below. Slide
trim over the front of the air conditioner until trim is
flush with sleeve as shown below.
8
Trim (2 ea)
Wall
FIG. 31
•Air conditioners covered in this manual pose
an excessive weight hazard. Two or more
people are needed to move and install the unit.
To prevent injury or strain, use proper lifting
and carrying techniques when moving unit.
•When handling the air conditioner, be careful
to avoid cuts from sharp metal fins on front
and rear coils.
•Make sure air conditioner does not fall during
removal.
CAUTION

—20—
3.5 PROCEDURE C
Redirect the louvers at the back of the wall sleeve
to 60°angle as shown in the FIG 32. The use of
pliers is recommended.
If the wall sleeve already has a rear grille, skip to
step 4. If the wall sleeve does not have a rear grille
or louvered panel, install the plastic grille from the
kit. Cut the plastic grille to 26-1/2" wide and 15-1/2"
high. Place the plastic grille to the inside of the wall
sleeve at the rear flange.
Fasten the 4 washer screws to secure the grille to
the wall sleeve. If you need plastic nuts to mount
plastic grille to the inside of the wall sleeve, there
are plastic nuts in the installation kit. The nuts are
installed from the inside of the sleeve and are
pressed into the square holes of the rear flanges.
Remove the backing from the Horizontal Insulation
strip 13/8x 13/8x 273/16 and attach that to the inside
bottom of the sleeve as shown below. Remove the
backing from the Around Insulation strip 13/8x 13/8x
611/2and attach that to the inside front of the
sleeve as shown below.
If the depth of your existing sleeve is less than or
equal to 18”, skip to step 7. Otherwise, cut the
baffles and the support blocks according to Length
"A" in the table below.
Remove the backing from the support blocks and
attach them to the inside of the wall sleeve as
shown FIG 37. Slide the baffle into slots of the
support blocks
Depth"D" of the existing
wall sleeve (inches)
Length "A"
(inches)
Support
Block
Baffle
A
A
3/4
1-3/4
4
18 D 18-5/8
18-
5
/ 8 D 19-
3
/ 4
19-3/4 D 22
Wall
Wall
Sleeve
Baffle
Front Support
Block
(7 13/16")
FIG. 37
FIG. 36
14
2
3
FIG. 33
Around Insulation
Horizontal Insulation
FIG. 35
or
FIG. 34
Rear Louvers
(Top View)
60°7 13/16"60°
FIG. 32
5
6
Place the plastic grille
Fasten the screws