Control Box And Connecting Position Of Wiring - LG ARUN Serie Manual De Instalación

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(460V)
Reactor
Bridge
diode
Inverter
PCB
Inverter
FAN PCB
Noise Filter
Transformer
Take care of the phase sequence
of 3-phase 3-wire power system
- Connect communication line between master and
slave 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.
UW1 Chassis(208/230V)
Main
PCB
Magnet
Inverter
switch
PCB
Only below
models :
Inverter
ARUN115DT2
FAN PCB
ARUN134DT2
ARUN154DT2
Electrical Wiring
Noise
Filter
Main
PCB
Magnet
switch
Take care of the phase sequence
of 3-phase 3-wire power system
Installation Manual 49