Wiring Connection - LG Art Cool Series Installation Manual

Wiring Connection

• 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.
T/Block Indoor 1(L) 2(N)
3 4
T/Block Connector 1(L) 2(N) 3 4
INDOOR POWER INPUT
Connection Terminal
• The capacity of connection terminal should be over 250V 20A. And when connecting the power line
2
1.5mm2 1.5mm
and communication line between indoor units, you are advised to use the connection terminal.
L
N
• When you are not able to use the connection terminal, fix each power line/communication line
G
by using the clamp cord attached in the product, together with the clamp cord and screw in the
1.5mm2
accessories.
Please consider the all
connected capacity of
indoor units.
CAUTION
• The above circuit diagram is subject to change without notice.
• Be sure to connect wires according to the wiring diagram.
• Connect the wires firmly, so that not to be pulled out easily.
• Connect the wires according to color codes by referring the wiring diagram.
CAUTION If a power plug is not to be used,
provide a circuit breaker between power
source and the unit as shown below.
CAUTION 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 screws 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.)
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.)
7) Always install an earth leakage circuit breaker where it is wet or moist.
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 protection device.
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.
Central controller
Outdoor unit Indoor unit
SODU SODU IDU IDU INTERNET DRY1 DRY2 GND
• When installing, refer to the circuit
diagram on the Control Box of
Outdoor unit
Indoor Unit.
12V
• When installing, refer to the wiring
diagram on the Control Cover
Inside Outdoor Unit.
Main power source
Air
Conditioner
Installation Manual 15
Installation
Circuit Breaker
Use a circuit
breaker or time
delay fuse.