LG LS-J0761NL_NM_NN / LS-J0962NL_NM_NN / LS-L1261NL_NM_NN Service Manual ▷ View online
10
Connection of the
pipes-Outdoor
pipes-Outdoor
Align the center of the pipings and
sufficiently tighten the flare nut by hand.
sufficiently tighten the flare nut by hand.
Finally, tighten the flare nut with torque
wrench until the wrench clicks.
wrench until the wrench clicks.
■
When tightening the flare nut with torque
wrench, ensure the direction for tightening
follows the arrow on the wrench.
wrench, ensure the direction for tightening
follows the arrow on the wrench.
A
B
Outdoor unit
Liquid side piping
(Smaller diameter)
(Smaller diameter)
Gas side
piping
(Bigger
diameter)
piping
(Bigger
diameter)
Torque wrench
Reroute the pipings and the drain hose across
the back of the chassis.
the back of the chassis.
Set the pipings and the drain hose to the back of
the chassis with the tubing holder.
the chassis with the tubing holder.
■
Hook the edge of tubing holder to tap on chassis
and push the bottom of tubing holder to be
engaged at the bottom of chassis.
and push the bottom of tubing holder to be
engaged at the bottom of chassis.
H
Indoor unit installation
■
Remove the spacer.
■
Ensure that the hooks are properly seated on the
installation plate by moving it left and right.
installation plate by moving it left and right.
J
Drain hose
Connecting
cable
Piping for
passage through
piping hole
passage through
piping hole
Tubing holder
Hook
1
Push
2
I
Wrap with
vinyl tape(wide)
vinyl tape(wide)
Drain hose
Vinyl tape(narrow)
Pipe
■
Bundle the piping and drain hose together by
wrapping them with cloth tape over the range
within which they fit into the rear piping housing
section.
within which they fit into the rear piping housing
section.
Press the lower left and right sides of the unit against
the installation plate until the hooks engage into their
slots(clicking sound).
the installation plate until the hooks engage into their
slots(clicking sound).
7K
3/8"[4.2kg.m]
1/4"[1.8kg.m]
9K, 12K
1/2"[5.5kg.m]
1/4"[1.8kg.m]
Pipe Size[Torque]
Capacity
(Btu/h)
GAS
LIQUID
A90031D¿
95.1.26
5:03
AM
˘
`
10
11
Connect the cable to the
Indoor unit.
Indoor unit.
■
Connect the cable to the indoor unit by
connecting the wires to the terminals on the
control board individually according to the
outdoor unit connection.
(Ensure that the color of the wires of the
outdoor unit and the terminal No. are the same
as those of the indoor unit.)
connecting the wires to the terminals on the
control board individually according to the
outdoor unit connection.
(Ensure that the color of the wires of the
outdoor unit and the terminal No. are the same
as those of the indoor unit.)
CAUTION
The power cord connected to the indoor unit should
be complied with the following specifications
(Type H05VV-F approved by HAR or SAA).
be complied with the following specifications
(Type H05VV-F approved by HAR or SAA).
BLUE
G/Y
BLUE
1(L)
Terminals on the indoor unit
2(N)
3
1(L)
Terminals on the outdoor unit
2(N)
3
BROWN
RED
G/Y
RED
BROWN
NORMAL
CROSS-SECTIONAL
AREA 7K,9K:1.0mm
CROSS-SECTIONAL
AREA 7K,9K:1.0mm
2
12K:1.5mm
2
NORMAL
CROSS-SECTIONAL
AREA 7K,9K:1.0mm
CROSS-SECTIONAL
AREA 7K,9K:1.0mm
2
12K:1.5mm
2
The connecting cable connected to the indoor and
outdoor unit should be complied with the following
specifications
(Type H07RN-F approved by HAR or SAA).
outdoor unit should be complied with the following
specifications
(Type H07RN-F approved by HAR or SAA).
CONNECTING THE CABLE BETWEEN INDOOR UNIT AND OUTDOOR UNIT
Color of Wires
Color of Wires
The length of the power supply cord should be
over 1.8m measured from the power supply cord
entry of the cabinet to the middle of the live pin
of the plug.
over 1.8m measured from the power supply cord
entry of the cabinet to the middle of the live pin
of the plug.
Air
Conditioner
Main power source
Circuit Breaker
Use a circuit
breaker or time
delay fuse.
Use a circuit
breaker or time
delay fuse.
CAUTION
If a power plug is not to be used, provide a circuit breaker between power source and the unit
as shown below.
as shown below.
A90031D¿
95.1.26
5:03
AM
˘
`
11
12
Connect the cable to the
outdoor unit
outdoor unit
Remove the control cover from the unit by
loosening the screw.
Connect the wires to the terminals on the
control board individually.
loosening the screw.
Connect the wires to the terminals on the
control board individually.
Secure the cable onto the control board with
the cord clamp.
the cord clamp.
Refix the control cover to the original
position with the screw.
position with the screw.
Use a recognized circuit breaker 16A
between the power source and the unit. A
disconnecting device to adequately
disconnect all supply lines must be fitted.
between the power source and the unit. A
disconnecting device to adequately
disconnect all supply lines must be fitted.
A
B
C
D
Over 5mm
Terminal block
(Pillar terminal)
Holder for
connecting
cable
Control cover
Connecting cable
After the confirmation of the above conditions, prepare the wiring as follows:
1) Never fail to have an individual power circuit specifically for the air conditioner. As for
the method of wiring, be guided by the circuit diagram posted on the inside of control
cover.
cover.
2) 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 cause burn-out of the wires.)
transportation. Check them and make sure that they are all tightly fastened.
(If they are loose, it could cause burn-out of the wires.)
3) Specification of power source.
4) Confirm that electrical capacity is sufficient.
5) See to that the starting voltage is maintained at more than 90 percent of the rated
4) Confirm that electrical capacity is sufficient.
5) See to that the starting voltage is maintained at more than 90 percent of the rated
voltage marked on the name plate.
6) Confirm that the cable thickness is as specified in the power source specification.
(Particularly note the relation between cable length and thickness. (Refer to page 11))
7) Always install an earth leakage circuit breaker in a wet or moist area.
8) The following would be caused by voltage drop.
8) The following would be caused by voltage drop.
• Vibration of a magnetic switch, which will damage the contact point, fuse breaking, disturbance of the
normal function of the overload.
9) The means for disconnection from a power supply shall be incorporated in the fixed
wiring and have an air gap contact separation of at least 3mm in each active(phase)
conductors.
conductors.
Outdoor Unit
CAUTION
A90031D¿
95.1.26
5:03
AM
˘
`
12
CHECKING THE DRAINAGE AND FORMING THE PIPINGS
13
Form the piping
Form the piping by wrapping the
connecting portion of the indoor unit with
insulation material and secure it with two
kinds of vinyl tapes.
connecting portion of the indoor unit with
insulation material and secure it with two
kinds of vinyl tapes.
■
If you want to connect an additional drain
hose, the end of the drain outlet should be
routed above the ground. Secure the drain
hose appropriately.
hose, the end of the drain outlet should be
routed above the ground. Secure the drain
hose appropriately.
In cases where the outdoor unit is
installed below the indoor unit perform
the following.
installed below the indoor unit perform
the following.
■
Tape the piping, drain hose and
connecting cable from down to up.
connecting cable from down to up.
■
Secure the tapped piping along the exterior
wall using saddle or equivalent.
wall using saddle or equivalent.
A
A
B
,
,
Trap is required to prevent water
from entering into electrical parts.
from entering into electrical parts.
Seal small openings
around pipings with a
gum type sealer.
around pipings with a
gum type sealer.
Taping
Drain
hose
hose
Pipings
Connecting
cable
cable
In cases where the Outdoor unit is
installed above the Indoor unit perform
the following.
installed above the Indoor unit perform
the following.
■
Tape the piping and connecting cable from
down to up.
down to up.
■
Secure the taped piping along the exterior
wall. Form a trap to prevent water entering
the room.
wall. Form a trap to prevent water entering
the room.
■
Fix the piping onto the wall by saddle or
equivalent.
equivalent.
C
,
,
Seal a small opening
around the pipings
with gum type sealer.
around the pipings
with gum type sealer.
Trap
Trap
Checking the drainage
To remove the front panel from the indoor
unit, remove the front panel from the
indoor unit cabinet.
unit, remove the front panel from the
indoor unit cabinet.
■
Set the air direction louvers up-and-down to
the position(horizontally) by hand.
the position(horizontally) by hand.
■
Remove the securing screws that retain the
front panel. Pull the lower left and right
sides of the grille toward you and lift it off.
(9K Btu models: 2EA,
12K Btu models: 3EA)
front panel. Pull the lower left and right
sides of the grille toward you and lift it off.
(9K Btu models: 2EA,
12K Btu models: 3EA)
Pull the right and
the left side.
the left side.
Screw
To check the drainage.
■
Pour a glass of water on the evaporator.
■
Ensure the water flows through the drain
hose of the indoor unit without any leakage
and goes out the drain exit.
hose of the indoor unit without any leakage
and goes out the drain exit.
B
Drain piping
■
The drain hose should point downward for
easy drain flow.
easy drain flow.
C
■
Do not make drain piping.
Downward slope
Do not raise
Accumulated
drain water
drain water
Tip of drain hose
dipped in water
dipped in water
Air
Waving
Water
leakage
leakage
Water
leakage
leakage
Ditch
Less than
50mm gap
50mm gap
Water
leakage
leakage
A90031D¿
95.1.26
5:03
AM
˘
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13
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