LG LS-K1860YL Service Manual ▷ View online
-32-
3. Insert the connecting cable into the indoor unit.
■
Don't connect the cable to the indoor unit.
■
Make a small loop with the cable for easy con-
nection later.
nection later.
4. Tape the drain hose and the connecting cable.
■
Connecting cable
5. Indoor unit installation
■
Hang the indoor unit from the hooks at the top of
the installation plate.
the installation plate.
■
Insert the spacer etc. between the indoor unit and
the installation plate and separate the bottom of
the indoor unit from the wall.
the installation plate and separate the bottom of
the indoor unit from the wall.
Installation plate
Spacer
Indoor unit
8cm
6. Connecting the pipings to the indoor unit and the
drain hose to drain pipe.
■
Align the center of the pipings and sufficiently
tighten the flare nut by hand.
tighten the flare nut by hand.
■
Tighten the flare nut with a wrench.
7. Wrap the insulation material around the connect-
ing portion.
■
Overlap the connection pipe heat insulation and
the indoor unit pipe heat insulation material. Bind
them together with vinyl tape so that there is no
gap.
the indoor unit pipe heat insulation material. Bind
them together with vinyl tape so that there is no
gap.
Plastic bands
Insulation material
Vinyl tape(narrow)
Connection
pipe
pipe
Connecting cable
Indoor
unit piping
unit piping
Pipe
Vinyl tape
(wide)
(wide)
Wrap with vinyl tape
Indoor unit tubing
Flare nut
Pipings
Torque wrench
Indoor unit tubing
Spanner (fixed)
Connection pipe
Flare nut
Vinyl tape
Adhesive
Drain hose
Indoor unit drain hose
(narrow)
■
When extending the drain hose at the indoor unit,
install the drain pipe.
install the drain pipe.
■
Wrap the area which accommodates the rear piping housing
section with vinyl tape.
section with vinyl tape.
7k, 9k
3/8"[4.2kg.m]
1/4"[1.8kg.m]
12k, 18k
1/2"[5.5kg.m]
1/4"[1.8kg.m]
Pipe Size[Torque]
Capacity
(Btu/h)
GAS
LIQUID
-33-
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.
ensure the direction for tightening follows the
arrow on the wrench.
Outdoor unit
Liquid side piping
(Smaller diameter)
(Smaller diameter)
Gas side
piping
(Bigger
diameter)
piping
(Bigger
diameter)
Torque wrench
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.
and push the bottom of tubing holder to be
engaged at the bottom of chassis.
10. 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.
Drain hose
Connecting
cable
Piping for
passage through
piping hole
passage through
piping hole
Tubing holder
Hook
1
Push
2
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.
wrapping them with cloth tape over the range
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).
installation plate until the hooks engage into their
slots(clicking sound).
7k, 9k
3/8"[4.2kg.m]
1/4"[1.8kg.m]
12k, 18k
1/2"[5.5kg.m]
1/4"[1.8kg.m]
Pipe Size[Torque]
Capacity
(Btu/h)
GAS
LIQUID
-34-
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 connect-
ing the wires to the terminals on the control board
individually according to the outdoor unit connec-
tion.
(Ensure that the color of the wires of the outdoor
unit and the terminal No. are the same as those
of the indoor unit.)
ing the wires to the terminals on the control board
individually according to the outdoor unit connec-
tion.
(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 specifica-
tions
(Type H05VV-F approved by HAR or SAA).
should be complied with the following specifica-
tions
(Type H05VV-F approved by HAR or SAA).
RED
RED
BLUE
BLUE
1(L)
Terminals on the indoor unit
2(N)
3
1(L)
Terminals on the outdoor unit
2(N)
3
BROWN
GREEN/YELLOW
BROWN
GREEN/YELLOW
NORMAL
CROSS-SECTIONAL
AREA
7K,9K:1.0mm
CROSS-SECTIONAL
AREA
7K,9K:1.0mm
2
12K:1.5mm
2
18K:2.5mm
2
NORMAL
CROSS-SECTIONAL
AREA
7K,9K:1.0mm
CROSS-SECTIONAL
AREA
7K,9K:1.0mm
2
12K:1.5mm
2
18K:2.5mm
2
The connecting cable connected to the indoor
and outdoor unit should be complied with the fol-
lowing specifications
(Type H07RN-F approved by HAR or SAA).
and outdoor unit should be complied with the fol-
lowing specifications
(Type H07RN-F approved by HAR or SAA).
• Inverter model
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.
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
If a power plug is not to be used, provide a circuit breaker between power source and
the unit as shown below.
the unit as shown below.
Circuit Breaker
Use a circuit break-
er or time delay
fuse.
Use a circuit break-
er or time delay
fuse.
CAUTION
-35-
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 16A(7, 9, 12k),
20A(18k) 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.
Over 5mm
Terminal block
(Pillar terminal)
(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.
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.)
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 voltage marked
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.)
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 func-
tion 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
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