LG LM-2162H2N Service Manual ▷ View online
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Installation
A
B
1) Selection of the best location
1. Indoor unit
•
There should not be any heat source or steam
near the unit.
near the unit.
• There should not be any obstacles to prevent
the air circulation.
• A place where air circulation in the room will be
good.
• A place where drainage can be easily obtained.
• A place where noise prevention is taken into
consideration.
• Do not install the unit near the door way.
• Ensure the spaces indicated by arrows from
the wall, ceiling, fence, or other obstacles.
2. Outdoor unit
• If an awning is built over the unit to prevent
direct sunlight or rain exposure, be careful that
heat radiation from the condenser is not
restricted.
heat radiation from the condenser is not
restricted.
• There should not be any animals or plants
which could be affected by hot air discharged.
• Ensure the spaces indicated by arrows from
the wall, ceiling, fence, or other obstacles.
3. Piping length and the elevation
More than
5 cm
More than 5 cm
Front
Rear left
Left
Right
Rear right
Down right
More than
5 cm
More than eye-level
More than 10 cm
More than 10 cm
More than 70 cm
Indoor unit
Outdoor
unit
unit
Pipe Size
GAS
LIQUID
Max. piping
length
A (m)
Max.
Elevation
B (m)
1/2"(3/8")
1/4"
10~15
5~7
(1) Installation of Indoor, Outdoor unit
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10. Set the pipings and the connecting cable to
the back of the chassis with the tubing
holder.
holder.
• Hook the edge of tubing holder to tap on chas-
sis and push the bottom of tubing holder to be
engaged in the bottom of chassis.
engaged in the bottom of chassis.
11. Indoor unit installation.
• Hook the indoor unit onto the upper portion of
installation plate. (Engage the two hooks of the
rear top of the indoor unit with the upper edge
of the installation plate.)
Ensure the hooks are properly seated on the
installation plate by moving it in left and right.
rear top of the indoor unit with the upper edge
of the installation plate.)
Ensure the hooks are properly seated on the
installation plate by moving it in left and right.
Drain hose
Tubing holder
Piping
Taping
Hook
Push
Connecting
cable
cable
Drain hose
Press the lower left and right side of the unit
against the Installation Plate until the hooks
engages with their slots (sound click).
against the Installation Plate until the hooks
engages with their slots (sound click).
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(3) Connecting Pipings and the cable to Outdoor unit
1) Connecting the pipings to the Outdoor
unit
1. Align the center of the pipings and sufficiently
tighten the flare nut with fingers.
2. Finally, tighten the flare nut with torque
wrench until the wrench clicks.
• When tightening the flare nut with torque wrench,
• When tightening the flare nut with torque wrench,
ensure the direction for tightening follows the
arrow on the wrench.
arrow on the wrench.
Outdoor unit
Gas side piping
A-UNIT
B-UNIT
Liquid side piping
Torque wrench
Pipe Size
Torque
Liquid Side (1/4")
1.8kg m
Gas Side (3/8")
4.2kg m
Gas Side (1/2")
5.5kg m
CAUTION
After the confirmation of the above conditions, prepare the wiring as follows:
1) Never fail to have an individual power specialized for the air conditioner. As for the method of
wiring, be guided by the circuit diagram pasted on the inside of control box cover.
2) Provide a circuit breaker switch between power source and the unit.
3) The screw which fasten the wiring in the casing of electrical fittings are liable to come loose from
vibrations to which the unit is subjected during the course of transportation. Check them and
make sure that they are all tightly fastened. (If they are loose, it could give rise to burn-out of the
wires.)
make sure that they are all tightly fastened. (If they are loose, it could give rise to burn-out of the
wires.)
4) Specification of power source.
5) Confirm that electrical capacity is sufficient.
6) See to that the starting voltage is maintained at more than 90 percent of the rated voltage marked
on the name plate.
7) Confirm that the cable thickness is as specified in the power sources specification.
(Particularly note the relation between cable length and thickness.)
8) Never fail to equip a leakage breaker where it is wet or moist.
9) The following troubles would be caused by voltage drop-down.
• Vibration of a magnetic switch, damage on the contact point there of, fuse breaking, disturbance to the
normal function of a overload protection device.
• Proper starting power is not given to the compressor.
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1(L)
2(N)
1(L)
2(N)
3
3
1(L)
2(N)
3
3
2(N)
2(N)
1(L)
1(L)
Terminals on the OUTDOOR UNIT
Terminals on the INDOOR UNIT
Power cord
Terminals on the INDOOR UNIT
A-UNIT
B-UNIT
2) Connection of the cable
1. Remove the cover control from the unit by loosening
the screw.
Connect the wires to the terminals on the control board
individually as the following.
Connect the wires to the terminals on the control board
individually as the following.
Outdoor unit
Terminal block
Connecting cable
Power cord
Cover control
Holder for
power supply
cord
Over 5mm
2. Secure the cable onto the control board with the holder
(clamper).
3. Refix the cover control to the original position with the
screw.
4. Use a recongnized circuit breaker between the power
source and the unit. A disconnection device to ade-
quately disconnect all supply lines must be fitted.
quately disconnect all supply lines must be fitted.
CAUTION
ø8.5mm
GN/YL
20mm
ø7.5mm
GN/YL
20mm
The power cord connected to the outdoor unit
should be complied with the following specifica-
tions (Rubber insulation, type H05RN-F
approved by HAR or SAA).
should be complied with the following specifica-
tions (Rubber insulation, type H05RN-F
approved by HAR or SAA).
The connecting cable connected to the indoor
and outdoor unit should be complied with the
following specifications (Rubber insulation, type
H07RN-F approved by HAR or SAA).
and outdoor unit should be complied with the
following specifications (Rubber insulation, type
H07RN-F approved by HAR or SAA).
NORMAL CROSS-
SECTIONAL AREA
0.75mm
SECTIONAL AREA
0.75mm
2
NORMAL CROSS-
SECTIONAL AREA
2.5mm
SECTIONAL AREA
2.5mm
2
1(L)
1(L)
2(N)
2(N)
1(L)
2(N)
3
3
3
3
1(L)
2(N)
3
1(L)
2(N)
3
2(N)
1(L)
Terminals on the OUTDOOR UNIT
Terminals on the INDOOR UNIT
Terminals on the INDOOR UNIT
Terminals on the INDOOR UNIT
A-UNIT
B-UNIT
C-UNIT
Power cord
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