LG LS-K1860HL Service Manual ▷ View online
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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
Outdoor unit
Gas side piping
(Bigger diameter)
(Bigger diameter)
Liquid side
piping
(Smaller
diameter)
piping
(Smaller
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.
Ensure that the hooks are properly seated on the
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
Drain hose
Vinyl tape(narrow)
Pipe
Wrap with
vinyl tape(wide)
vinyl tape(wide)
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).
18K, 24K, 26K
1/2"[5.5kg.m]
1/4"[1.8kg.m]
5/8"[6.6kg.m]
3/8"[4.2kg.m]
Pipe Size[Torque]
Capacity
(Btu/h)
GAS
LIQUID
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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
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.)
ing 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).
1(L)
Terminals on the outdoor unit
Terminals on the indoor unit
1(L)
2(N)
2(N)
BROWN
BLUE GREEN/YELLOW
BROWN
BLUE GREEN/YELLOW
Terminals on the outdoor unit
Terminals on the indoor unit
1(L)
1(L)
2(N)
2(N)
3
4
3
4
BROWN BLUE
G/Y
BLACK
RED
BROWN BLUE
G/Y
RED
BROWN BLUE
BLACK
BLACK
G/Y
RED
RED
G/Y
BLUE
BROWN
The power connecting cable connected to the indoor
and outdoor unit should be complied with the following
specifications
(Type H07RN-F approved by HAR or SAA).
and outdoor unit should be complied with the following
specifications
(Type H07RN-F approved by HAR or SAA).
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).
• Cooling model
• Heat pump model
Color of Wires
Color of Wires
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
Capacity
(Btu/h)
(Btu/h)
NORMAL CROSS
-SECTIONAL AREA
-SECTIONAL AREA
18K
24K
26K
26K
1.5mm
2
2.5mm
2
Capacity
(Btu/h)
(Btu/h)
NORMAL CROSS
-SECTIONAL AREA
-SECTIONAL AREA
18K
24K
26K
26K
1.5mm
2
2.5mm
2
3. Connecting the Cable Between Indoor Unit and Outdoor Unit
NORMAL
CROSS-SECTIONAL
AREA 0.75mm
CROSS-SECTIONAL
AREA 0.75mm
2
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2) Connect the cable to the outdoor unit
1. Remove the control cover from the unit by
loosening 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 20A (18K),
25A (24K, 26K) between the power source and
the unit. A disconnecting device to adequate-
ly disconnect all supply lines must be fitted.
the unit. A disconnecting device to adequate-
ly 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
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 vibra-
tions 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.)
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 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.
• Vibration of a magnetic switch, which will damage the contact point, fuse breaking, disturbance of the nor-
mal 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
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Operation
(1) Name and Function-Remote Control (Cooling Models)
Signal transmitter.
Transmits the signals
to the room air conditioner.
to the room air conditioner.
Remote Controller
1
2
8
9
10
11
3
4
5
6
7
12
13
OPERATION DISPLAY
Displays the operation conditions.
START/STOP BUTTON
Operation starts when this button is pressed and stops when
the button is pressed again.
the button is pressed again.
OPERATION MODE SELECTION BUTTON
Used to select the operation mode.
ON/OFF TIMER BUTTONS
Used to set the time of starting and stopping operation.
TIME SETTING BUTTONS
Used to adjust the time.
TIMER SET/CANCEL BUTTONS
Used to set the timer when the desired time is obtained and
to cancel the Timer operation.
to cancel the Timer operation.
CHAOS SWING BUTTON
Used to stop or start louver movement and set the desired
up/down airflow direction.
up/down airflow direction.
SLEEP MODE AUTO BUTTON
Used to set Sleep Mode Auto operation.
AIR CIRCULATION BUTTON
Used to circulate the room air without cooling or heat-
ing (turns indoor fan on/off).
ing (turns indoor fan on/off).
ROOM TEMPERATURE CHECKING BUT-
TON
Used to check the room temperature.
RESET BUTTON
Used prior to resetting time or after replacing batteries.
NEGATIVE ION (Not on all models)
Used to generate negative ion.
HORIZONTAL AIRFLOW DIRECTION
CONTROL BUTTON
(Not on all models)
Used to set the desired horizontal airflow direction.
1
2
3
4
5
6
7
8
9
10
11
12
13
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