LG LM-1966C2L_M / LM-1966H2L_M / LM-2166H2L_M / LM-2065C3L_M Service Manual ▷ View online
Taping
Drain hose
Pipings
Connecting
cable
cable
Plastic band
• Trap is required to prevent water from
entering into electrical parts.
entering into electrical parts.
Power cord
- 33 -
Seal a small opening
around the pipings
with gum type sealer.
Trap
Trap
3) Form the pipings
1. Wrap the connecting portion of indoor unit
with the Insulation material and secure it with
two Plastic Bands(for the left pipings).
two Plastic Bands(for the left pipings).
• If you want to connect an additional drain hose,
the end of the drain-outlet should keep distance
from the ground.(Do not dip it into water, and fix
it on the wall to avoid swinging in the wind.)
from the ground.(Do not dip it into water, and fix
it on the wall to avoid swinging in the wind.)
2. Tape the Pipings, drain hose and Connecting
Cable from down to up.
3. Form the pipings gathered by taping along the
exterior wall and fix it onto the wall by saddle
or equivalent.
or equivalent.
1. Tape the Pipings and Connectiong cable from
down to up.
2. Form the pipings gathered by taping along the
exterior wall and the Trap to be required to
prevent the room from entering the water.
prevent the room from entering the water.
3. Fix the pipings onto the wall by saddle or
equivalent.
In case of the Outdoor unit is installed bellow
position of the Indoor unit.
position of the Indoor unit.
In case of the Outdoor unit is installed upper
position of the Indoor unit.
position of the Indoor unit.
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(5) Air Purging of the Pipings and indoor unit
The air which contains moisture remaining in the is refrigeration cycle may cause a malfunction on the
compressor.
compressor.
1. Confirm that both the liquid side valve and the gas side valve are set to the closed position.
2. After connecting the piping, check the joints for gas leakage with gas leak detector.
3. Remove the service port nut, and connect the gauge manifold and the vacuum pump to the service port
by the charge hose.
4. Vacuum the indoor unit and the connecting pipes until the pressure in them lowers to below-76cmHg.
5. Disconnect the charge hose and fit the nut to the service port.
(Tightening torque: 1.8kg.m)
6. Remove the valve stem nuts, and fully open the stems of the 2-way and 3-way valves with a hexagon
wrench.
7. Tighten the valve stem nuts of the 2-way valve and 3-way valve.
Indoor unit
Outdoor unit
Liquid side
Gas side
CLOSE
OPEN
Vacuum pump
2-way
valve
Closed
Closed
3-way
valve
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(7) Maximum Length of Pipe and Freon Extra Charge
INDOOR UNIT
INDOOR UNIT
OUTDOOR UNIT
B(Length)
D(Length)
A(Height)
C(Height)
Capacity
STANDARD
CONNECTION TYPE
Charge am't(g)
(Btu/h)
LENGTH(m)
A
B
C
D
per 1m
~7000
7.5
7
15
7
15
20
~9000
7.5
7
15
7
15
20
~12000
7.5
7
15
7
15
20
~18000
7.5
7
15
7
15
40
~24000
7.5
7
15
7
15
40
** A, B mean indoor unit higher located than outdoor unit.
C, D mean outdoor unit higher located than indoor unit.
Charge amount per 1m
(6) Preventive function of cable mis-connection(Cooling & Heating)
This product has a preventive function of cable mis-connection. In case of mis-connection (in case that the
cables between indoor and outdoor units have not been connected properly), it gives a warning signal of LED
flickering 3 minutes after starting operation. (Press the forced operation key more than 3 seconds.)
cables between indoor and outdoor units have not been connected properly), it gives a warning signal of LED
flickering 3 minutes after starting operation. (Press the forced operation key more than 3 seconds.)
CAUTION
Don't turn on all the indoor units all at once when you check the connection status. In that case the sensor can
not be operated properly.
not be operated properly.
Once
3 seconds
Twice
3 seconds
Once
3 seconds
Twice
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(8) Test running
Battery Cover
Discharge air
Bolt
Tubing connection
Settlement of Outdoor Unit
• Anchor the outdoor unit with a bolt and nut
(ø10cm) tightly and horizontally on a concrete or
rigid mount.
rigid mount.
• When installing on the wall, roof or rooftop,
anchor the mounting base securely with a nail or
wire assuming the influence of wind and earth-
quake.
wire assuming the influence of wind and earth-
quake.
• In the case when the vibration of the unit is con-
veyed to the house, settle the unit with an anti-
vibration rubber.
vibration rubber.
2) Evaluation of the performance
1. Measure the temperature of the intake and
discharge air.
2. Ensure the difference between the intake
temperature and the discharge one is more
than 8°C.
than 8°C.
1) Connection of power supply
1. Connect the power supply cord to the inde-
pendent power supply.
2. Prepare the remote control.
• Insert two batteries provided.
Remove the battery cover from the remote con-
troller.
troller.
• Slide the cover according to the arrow direction.
Insert the two batteries.
(Two "R03" or "AAA" dry-cell batteries or equiv-
alent.)
(Two "R03" or "AAA" dry-cell batteries or equiv-
alent.)
• Be sure that the (+) and (-) directions are cor-
rect.
• Be sure that both batteries are new.
Re-attach the cover.
• Slide it back into position.
3. Operate the unit at cooling operation mode
for fifteen minutes or more.
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