Control Box And Connecting Position Of Wiring - LG ARUV140LTS4 Installation Manual

Control box and connecting position of wiring

- Remove all of the screws at front panel and remove the panel by pulling it forward.
- Connect communication cable between main and sub outdoor unit through the terminal block.
- Connect communication cables 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 cable between outdoor unit and indoor units with shielded
cable, connect the shield ground to the earth screw.
WARNING
!
The temperature sensor for outdoor air should not be exposed to direct sunlight.
- Provide an appropriate cover to intercept direct sunlight.
[Heat pump]
UX2
Front Panel
Main PCB
Noise Filter
External PCB
Take care of the phase
sequence of 3-phase 4-wire
power system
ELECTRICAL WIRING
UX3
57