LG Multi V ARUB Series Installation Manual page 45

Control box and connecting position of wiring
- Remove all of the screws on front panel, and remove the front panel by pulling it forward.
Front Panel
WARNING
The temperature sensor for outdoor air should not be exposed to direct sunlight.
- Provide an appropriate cover to intercept direct sunlight.
(Inverter Comp.)
Cover
Capacitor
Interter
Board
Heatsink
(Inverter Comp
Driver)
Control board for inverter fan
Main unit
Reactor
Magnetic contactor
Fuse
Noise Filter Main PCB
Transformer
Connect the ground line of
distribution panel here.
Take care of the phase sequence of
3-phase 4-wire power system.
- Connect transmission line between main and sub
outdoor unit through the terminal block.
- Connect transmission lines between outdoor unit
and indoor/HR units through the terminal block.
- When the central control system is connected to the
outdoor unit, a dedicated PCB must be connected
between them.
- When connecting transmission line between out-
door unit and indoor/HR units with shielded wire,
connect the shield ground to the earth screw.
Sub unit
Magnetic contactor
Capacitor
Installation Manual 45
Electrical Wiring
Sub PCB
Transformer
Ground Terminal
for Transmission
Line Shield