LG CRNN Series, Installation Manual

Page: 23 / 86

Installation of Art Cool Type Indoor Unit
23
Installation of Art Cool Type Indoor Unit
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.
Circuit Breaker
Use a circuit
breaker or time
delay fuse.
CAUTION
• 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
8. 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.
• 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.
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 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.)
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 24)
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 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.
Terminal Block Indoor
1(L) 2(N) 3(A) 4(B)
Terminal 1 in Outdoor
1(R) 2(S) 3(T) 4(N)
Terminal 2 in Outdoor
1(A) 2(B)
INDOOR POWER INPUT
(CAN BE CONNECTED TO OUTDOOR)
OUTDOOR POWER INPUT