Wiring Connection - LG ARNU18GV1A4 Manual De Instalación

THE INDOOR UNIT INSTALLATION
24

Wiring Connection

- Connect the wires to the terminals on the control board individually according to the outdoor
unit connection.
- Ensure that the color of the wires of outdoor unit and the terminal No. are the same as those of
indoor unit respectively.
Terminal block of indoor unit
1(L) 2(N)
Indoor power input
CAUTION
!
• The connecting cable:connected to the indoor and outdoor unit
should be complied with the following specifications(Rubber
insulation, type H07RN-F approved by HAR or SAA).
• If the supply cord is damaged, it must be replaced by a special cord
or assembly available from the manufacturer of its service agent.
WARNING
!
Make sure that the screws of the terminal are free from looseness.
CAUTION
!
The Power cord connected to the unit should be selected according to the following
specifications.
CAUTION
!
After the confirmation of the above conditions, prepare the wiring as follows:
1) Never fail to have separate power specially for the air conditioner. As for the method of
wiring, follow the circuit diagram pasted on the inside of control box cover.
2) Provide a circuit breaker switch between power source and the unit.
3) 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 give rise to
burn-out of the wires.)
4) Confirm the Specification of power source
5) Confirm that electrical capacity is sufficient.
6) Be sure that the starting voltage is maintained at more than 90 percent of the rated voltage
marked on the name plate.
7) Confirm that the cable thickness is as specified in the power sources specification.
(Particularly note the relation between cable length and thickness.)
8) Do not install the leakage breaker in a place which is wet or moist.
Water or moist may cause short circuit.
9) The following troubles would be caused by voltage drop-down.
- Vibration of a magnetic switch, damage on the contact point there of, fuse breaking,
disturbance to the normal function of a overload protection device.
- Proper starting power is not given to the compressor.
Terminal block of outdoor unit
Outdoor unit Indoor unit
SODU SODU IDU-B IDU-A
3(A) 4(B)
Central controller
INTERNET DRY1 DRY2 GND
12V
NORMAL
CROSS-SECTIONAL
AREA 1.0-1.5 mm
2