LG LS-R126ABG / LS-R126ABL_ABM / LS-R126AHG_AEL / LS-R126BBG_RBG / LS-R126CBG_FBG_FEG / LS-R126CEL_EEL_CEG / LS-R126JEG_JEL / S12LHP Service Manual ▷ View online
-25-
• Bundle the piping and drain hose together by wrap-
ping them with cloth tape over the range within which
they fit into the rear piping housing section.
they fit into the rear piping housing section.
8. Reroute the pipings and the drain hose across the
back of the chassis.
9. Set the pipings and the drain hose to the back of
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.
bottom of chassis.
10. Indoor unit installation
• Remove the spacer.
• Ensure that the hooks are properly seated on the
• Ensure that the hooks are properly seated on the
installation plate by moving it left and right.
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).
3) Connection of the pipes-Outdoor
1. Align the center of the pipings and sufficiently
tighten the flare nut by hand.
2. Finally, tighten the flare nut with torque wrench
until the wrench clicks.
• When tightening the flare nut with torque wrench,
ensure the direction for tightening follows the arrow on
the wrench.
the wrench.
mm
inch
kg.m
Ø6.35
1/4
1.8
Ø9.52
3/8
4.2
Ø12.7
1/2
5.5
Ø15.88
5/8
6.6
Ø19.05
3/4
6.6
Outside diameter
Torque
Drain hose
Vinyl tape(narrow)
Pipe
Wrap with
vinyl tape(wide)
vinyl tape(wide)
Piping for
passage through
piping hole
passage through
piping hole
Outdoor unit
Liquid side piping
(Smaller diameter)
(Smaller diameter)
Gas side
piping
(Bigger
diameter)
piping
(Bigger
diameter)
Torque wrench
Outdoor unit
Gas side piping
(Bigger diameter)
(Bigger diameter)
Liquid side
piping
(Smaller
diameter)
piping
(Smaller
diameter)
Torque wrench
Tubing holder
Drain hose
Connecting
cable
-26-
3. Connecting The Cable Between Indoor Unit and Outdoor Unit
1) Connect the cable to the Indoor unit.
• Connect the cable to the indoor unit by connecting the wires to the terminals on the control board in
dividually 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.)
The earth wire should be longer than the common wires.
the terminal No. are the same as those of the indoor unit.)
The earth wire should be longer than the common wires.
Air
Conditioner
Main power source
If a power plug is not to be used, provide a circuit breaker
between power source and the unit as shown below.
between power source and the unit as shown below.
Circuit Breaker
Use a circuit
breaker or time
delay fuse.
Use a circuit
breaker or time
delay fuse.
CAUTION
CAUTION
The power cord connected to the "A" unit should be
complied with the following specifications
(Type "B" approved by HAR or SAA).
complied with the following specifications
(Type "B" approved by HAR or SAA).
7k~14k
18k
24k~28k
30k, 32k
36k, 38k
1.0
1.5
2.5
2.5
5.5
Unit(A)
Indoor
Indoor
Indoor
Outdoor
Outdoor
Cable Type(B)
H05VV-F
H05VV-F H05VV-F H05RN-F H05RN-F
NORMAL CROSS
-SECTIONAL AREA
Grade
(mm
2
)
(mm
2
)
(mm
2
)
The power connecting cable connected to the indoor
and outdoor unit should be complied with the following
specifications
(Type "B" approved by HAR or SAA).
and outdoor unit should be complied with the following
specifications
(Type "B" approved by HAR or SAA).
NORMAL
CROSS-SECTIONAL
AREA 0.75mm
CROSS-SECTIONAL
AREA 0.75mm
2
• The above circuit diagram is subject to change with-
out notice.
• Be sure to connect wires according to the wiring dia-
gram.
• Connect the wires firmly, so that not to be pulled out
easily.
• Connect the wires according to color codes by refer-
ring the wiring diagram.
CAUTION
• When installing, refer to the circuit diagram on the
Control Box of Indoor Unit.
• When installing, refer to the wiring diagram on the
Control Cover Inside Outdoor Unit.
5k~9k 12k~14k
18k
24k~28k
0.75
1.0
1.5
2.5
Cable Type(B) H07RN-F H07RN-F H07RN-F H07RN-F
NORMAL
CROSS
-SECTIONAL
AREA
Grade
30k, 32k
36k, 38k
0.75
0.75
Cable Type(B) H07RN-F H07RN-F
NORMAL CROSS
-SECTIONAL AREA
Grade
-27-
2) Connect the cable to the outdoor unit
1. Remove the control cover from the unit by loos-
ening the screw.
Connect the wires to the terminals on the control
board individually.
Connect the wires to the terminals on the control
board individually.
2. Secure the cable onto the control board with the
cord clamp.
3. Refix the control cover to the original position
with the screw.
4. Use a recognized circuit breaker "A"
between the power source and the unit.
A disconnecting device to adequately disconnect
all supply lines must be fitted.
A disconnecting device to adequately disconnect
all supply lines must be fitted.
Terminal block
Over 5mm
Cover control
Connecting cable
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
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.
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.)
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 voltage marked on
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 26))
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.
Outdoor Unit
CAUTION
7k~14k
18k
24k~28k 30k, 32k 36k, 38k
15
20
30
30
40
Circuit
Breaker
(A)
Grade
-28-
4. Checking the Drainage and Forming the Pipings
1) Checking the drainage
1. To remove the front panel from the indoor unit.
• Set the air direction louvers up-and-down to the posi-
tion(horizontally) by hand.
• Remove the securing screws that retain the front pan-
el. Pull the lower left and right sides of the grille
toward you and lift it off.
toward you and lift it off.
2. To check the drainage.
• Pour a glass of water on the evaporator.
• Ensure the water flows through the drain hose of the
• Ensure the water flows through the drain hose of the
indoor unit without any leakage and goes out the drain
exit.
exit.
3. Drain piping
• The drain hose should point downward for easy drain
flow.
• Do not make drain piping.
2) Form the piping
1. Form the piping by wrapping the connecting por-
tion of the indoor unit with insulation material and
secure it with two kinds of vinyl tapes.
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.
ground. Secure the drain hose appropriately.
2. In cases where the outdoor unit is installed below
the indoor unit perform the following.
• Tape the piping, drain hose and connecting cable from
down to up.
• Secure the tapped piping along the exterior wall using
saddle or equivalent.
3. In cases where the Outdoor unit is installed above
the Indoor unit perform the following.
• Tape the piping and connecting cable from down to up.
• Secure the taped piping along the exterior wall. Form
• Secure the taped piping along the exterior wall. Form
a trap to prevent water entering the room.
• Fix the piping onto the wall by saddle or equivalent.
Pull the right and
the left side.
the left side.
Taping
Drain
hose
hose
Pipings
Connecting
cable
cable
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.
Seal a small opening
around the pipings
with gum type sealer.
around the pipings
with gum type sealer.
Trap
Trap
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
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