Connect The Cable To The Indoor Unit - LG MULTI V ARNU07GTUA4 Engineering Product Data Book

Indoor unit
10. Installation

10.7 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.
Terminal Block Indoor Terminal Block Indoor
L(L1) N(L2)
INDOOR POWER INPUT
Connection Terminal
2
1.5mm2 1.5mm
L
N
G
1.5mm2
Please consider the all
connected capacity of
indoor units.
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.
18 _
ARTCOOL (Gallery)
Outdoor unit Indoor unit
A B SODU SODU IDU IDU
• The capacity of connection terminal should be over 250V 20A. And when connecting the power
line and communication line between indoor units, you are advised to use the connection terminal.
• When you are not able to use the connection terminal, fix each power line/communication
line by using the clamp cord attached in the product, together with the clamp cord and screw
in the accessories.
Central controller
Outdoor unit
INTERNET DRY1 DRY2 GND
12V
CAUTION
After the confirmation of the above conditions,
prepare the wiring as follows:
1) Never fail to have separate power circuit specif-
ically for the air conditioner. As for the method
of wiring, follow 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) Confirm the 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
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) conductor.
• 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.