LG HWC056JWAA0 / W05LC Service Manual ▷ View online
—11—
3. INSTALLATION
This air conditioner is designed with a button-
down chassis so that it can be installed simply in
a window.
down chassis so that it can be installed simply in
a window.
3-1. SELECT THE BEST LOCATION
1. To prevent vibration and noise, make sure the unit
is installed securely and firmly.
2. Install the unit where the sunlight does not shine
directly on the unit.
3. The outside of the cabinet must extend outward for
at least 10" and there should be no obstacles,
such as a fence or wall, within 20" from the back of
the cabinet because it will prevent heat radiation of
the condenser.
Restriction of outside air will greatly reduce the
cooling efficiency of the air conditioner.
such as a fence or wall, within 20" from the back of
the cabinet because it will prevent heat radiation of
the condenser.
Restriction of outside air will greatly reduce the
cooling efficiency of the air conditioner.
4. Install the unit a little slanted so the back is slightly
lower than the front (about 1/4"). This will force
condensed water to the outside.
condensed water to the outside.
5. Install the unit with the bottom about 30"~60"
above the floor level.
3-2. CHECK OF INSTALLATION
The setting conditions must be checked prior to
initial starting.
The under mentioned items are especially
important checking points when the installation
is finished.
initial starting.
The under mentioned items are especially
important checking points when the installation
is finished.
1. Grounding wire (Green of Green Yellow) is pro-
vided in the power cord. The green wire must be
grounded.
grounded.
2. Connect to a single-outlet 15AMP circuit.
3. To avoid vibration or noise, make sure the air
3. To avoid vibration or noise, make sure the air
conditioner is installed securely.
4. Avoid placing furniture or dreperies in front of the
air inlet and outlet.
3.3 HOW TO DRAIN
(When using drain pipe)
The air conditioner must be installed level or
titled slightly to the outside for proper water
drainage. On exceptionally hot and humid days
the air conditioner may drain condensation
water through overflow. If the air conditioner is
used in hot and a high humidity zone, exchange
the
titled slightly to the outside for proper water
drainage. On exceptionally hot and humid days
the air conditioner may drain condensation
water through overflow. If the air conditioner is
used in hot and a high humidity zone, exchange
the
HOLE RUBBER for the
DRAIN PIPE.
(See figure 22, figure 23)
ABOUT / "
Over 20"
HEAT
RADIATION
FENCE
AWNING
COOLED AIR
30"~60"
1
4
BOTTOM
BASE PAN
DRAIN PIPE
BOTTOM
HOLE RUBBER
BASE PAN
1
2
All side louvers of the cabinet must remain
exposed to the outside of the structure.
exposed to the outside of the structure.
CAUTION
Figure 21
Figure 22
Figure 23
—
12—
3.4 HOW TO INSTALL
•
WHEN USING GASKET
2
1
2
F
E
C
3
G
A
B
RIGHT SIDE
HORIZONTAL
LINE
D
1. WINDOW (A - WIDTH, B - HEIGHT)
2. GASKET
3. WALL
A
B
C
D
E
F
G
487mm
324mm
30mm
0~25mm
OVER 240mm
5~10mm
-5~5mm
(19
3
/
16"
)
(12
3
/
4"
)
(1
1
/
16"
)
(0~1")
(9
15
/
32"
)
(
3
/
16"
~
3
/
8"
)
(-
3
/
16"
~
3
/
16"
)
4. TROUBLE SHOOTING GUIDE
4.1 OUTSIDE DIMENSION (unit : mm)
370
472
21
3
Figure 24
Figure 25
—13—
4.2 PIPING SYSTEM
Following is a brief description of the important components and their function in what is called the refrigeration
system. Reference should be made to Figure 26 to follow the refrigerating cycle and the flow of the refrigerant in
the cooling cycle.
system. Reference should be made to Figure 26 to follow the refrigerating cycle and the flow of the refrigerant in
the cooling cycle.
COOLED
AIR
AIR
HOT
DISCHARGED
AIR
DISCHARGED
AIR
MOTOR
COMPRESSOR
ROOM AIR HEAT LOAD
CAPILLARY TUBE
(LIQUID REFRIGERANT)
LIQUID OUTLET
VAPOR INLET
COMPLETE LIQUID
BOIL OFF POINT
BOIL OFF POINT
SUCTION LINE
COOL LOW PRESSURE VAPOR
COOL LOW PRESSURE VAPOR
LIQUID
PRESSURE
DROP
PRESSURE
DROP
DISCHARGE
LINE
NOT HIGH PRESSURE
VAPOR
OUTSIDE COOLING
AIR FOR REFRIGERANT
PASS THROUGH
AIR FOR REFRIGERANT
PASS THROUGH
EVAPORATOR COILS
CONDENSER COILS
ROOM AIR CONDITIONER
CYCLE OF REFRIGERATION
HIGH PRESSURE VAPOR
LIQUID REFRIGERANT
LOW PRESSURE VAPOR
OIL
CONDENSER COILS
FAN
MOTOR
CAPILLARY
TUBE
TUBE
BLOWER
EVAPORATOR
COILS
COILS
Figure 26
—14—
4.3 TROUBLESHOOTING GUIDE
In general, possible trouble is classified in two kinds.
The one is called Starting Failure which is caused from an electrical defect. The other is Ineffective Air
Conditioning caused from a defect in the refrigeration circuit and improper application.
The one is called Starting Failure which is caused from an electrical defect. The other is Ineffective Air
Conditioning caused from a defect in the refrigeration circuit and improper application.
Unit is running but cooling is ineffective.
Ineffective Cooling
Satisfactory operation
with temperature
difference of inlet & outlet
air; 44~50°F (7~10°C)
Replacement of unit if
the unit is beyond repair.
Check outdoor coil
(heat exchanger) and
fan operation.
Check heat load
increase.
Check cold air
circulation for smooth
flow.
Check gas leakage.
Clean condenser.
Not on separate circuit
Check inside gas
pressure.
Adjust refrigerant
charge.
Malfunction of
compressor.
Replacement of
compressor.
Check clogging in refrigera-
tion circuit.
Repair clogging in
refrigeration circuit.
Dirty indoor coil
(heat exchanger)
Repair gas leak.
Malfunction of fan.
Clogging of air filter.
Obstruction at air outlet.
Remove obstruction.
