Control Box And Connecting Position Of Wiring - LG Multi V Plus II System Installation Manual

Electrical Wiring

Control box and connecting position of wiring

- Remove all of the screws at front panel and remove the 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.
UW1 Chassis
Reactor
Bridge
diode
Inverter
PCB
Inverter
FAN PCB
54 Outdoor Unit
Take care of the phase sequence
of 3-phase 4-wire power system
- Connect communication line between main and sub
outdoor unit through the terminal block.
- Connect communication lines between outdoor unit
and indoor 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 communication line between out-
door unit and indoor units with shielded wire, con-
nect the shield ground to the earth screw.
Noise
Filter
Reactor
Main
Inverter
PCB
PCB
Bridge
Magnet
diode
switch
Inverter
FAN PCB
Take care of the phase sequence
of 3-phase 4-wire power system
UY2 Chassis
Main PCB
Noise Filter