LG LM-2162H2N Service Manual ▷ View online
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(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.
one time
3 seconds
3 seconds
3 seconds
one time
two times
two times
(7) Maximum Length of Pipe and Freon Extra Charge
Type
Capacity
STANDARD
CONNECTION TYPE
Charge am't(g)
(Btu/h)
LENGTH(m)
A
B
C
D
per 1m
~7000
4
7
15
7
15
20
~9000
4
7
15
7
15
20
~12000
4
7
15
7
15
20
~18000
5
7
15
7
15
40
~24000
5
7
15
7
15
40
~7000
4
5
10
5
10
20
~9000
4
5
10
5
10
20
~12000
4
5
10
5
10
20
~18000
5
5
15
5
15
40
~24000
5
5
15
5
15
40
Cooling
Only
Heat
Pump
INDOOR UNIT
INDOOR UNIT
OUTDOOR UNIT
B(Length)
D(Length)
** A, B mean indoor unit higher located than outdoor unit.
C, D mean outdoor unit higher located than indoor unit.
A(Height)
C(Height)
Charge amount per 1m
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(8) Test running
RESET
RESET
RESET
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.
Discharge air
Bolt
Tubing connection
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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2) Indoor Unit Installation
The mounting wall should be strong and solid
enough to protect it from the vibration.
enough to protect it from the vibration.
1. Mount the installation plate on the wall with
four Type "A" screws.
(If mounting the unit on the concrete wall, consid-
er using anchor bolts.)
er using anchor bolts.)
• Always mount the Installation plate horizontally
by aligning the marking-off line by means of the
thread and a level.
thread and a level.
2. Drill the piping hole with 70mm dia. holecore
drill.
• Line according to the arrows marked on lower
the left and the rght side of the Installation Plate.
The meeting point of the extended line is the
center of the hole.
The meeting point of the extended line is the
center of the hole.
• Drill the piping hole at either the right or the left
and the hole should be slightly slant to the out-
door side.
door side.
Type "A" screw
Installation Plate
marking-off line
Thread
Weight
ø70mm
ø70mm
5~7mm
A
A
A
A
ø70mm
ø70mm
50mm
20mm
20mm
80mm
The lower left and the right side of
Installation Plate
Installation Plate
6K, 8K BTU
9K, 12K BTU
Left rear piping
Left rear piping
Right rear piping
Right rear piping
Indoor
Outdoor
Wall
Center
Center
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1) Preparation of pipings
1. Cut the pipes and the cable.
• Use the accessory piping kit or the pipes pur-
chased locally.
• Measure the distance between the indoor and
the outdoor unit.
• Cut the pipes a little longer than the measured
distance.
• Cut the cable 1.5m longer than the length of the
pipe.
2. Remove burrs.
• Remove burrs from cut edges of pipes.
• Turn the pipe end toward down to avoid the
metal powder entering the pipe.
Caution:
If burrs are not removed, they may cause a gas
leakage.
leakage.
3. Flaring the pipes.
• Insert the flare nuts, mounted on the connection
ports of both indoor and outdoor unit, onto the
copper pipes. Some refrgerant gas may leak,
when the flare nuts are removed from the indoor
unit, as some gas is charged to prevent the
inside of the pipe from rusting.
copper pipes. Some refrgerant gas may leak,
when the flare nuts are removed from the indoor
unit, as some gas is charged to prevent the
inside of the pipe from rusting.
• Fit the copper pipe end into the Bar of flare tool
about 0~0.5mm higher. (See illustration)
• Flare the pipe ends.
4. Tape the flaring portion to protect it from the
dust or damages.
90
"A"
When properly flared, the internal surface flare will
evenly shine and be of even thickness.
Since the flare part comes into contact with the connec-
tors, carefully check the flare finish.
evenly shine and be of even thickness.
Since the flare part comes into contact with the connec-
tors, carefully check the flare finish.
Pipe cutter
Slanted
Rough
Pipe
Point down
Reamer
Bar
Bar
Copper pipe
Clamp handle
Red arrow mark
Handle
Yoke
Cone
"A"; ø12.7 mm (1/2")
0~0.5 mm
ø9.52 mm (3/8")
0~0.5 mm
ø6.35 mm (1/4")
0~0.5 mm
= Improper flaring =
Inclined
Surface
damaged
Cracked
Uneven
thickness
(2) Piping and Drainage of Indoor Unit
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