Control Box And Connecting Position Of Wiring - LG multi V ARUV160DTS4 Installation Manual

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Outdoor Unit
Indoor
Unit
Outdoor Unit
Indoor
Unit
2-Core Shield Cable
Outdoor Unit
Indoor
Unit
Outdoor Unit
Indoor
Unit
Multi-Core Cable
Outdoor Unit
Master Slave1 Slave2
Outdoor Unit
Master Slave1 Slave2
2-Core Shield Cable
Outdoor Unit
Master Slave1 Slave2
Outdoor Unit
Master Slave1 Slave2
Multi-Core Cable
Indoor
Unit
Remote Remote
control control
Indoor
Unit
Remote Remote
control control
Indoor
Unit
Remote Remote
control control
Indoor
Unit
Remote Remote
control control
Indoor Indoor
Unit Unit
Remote Remote
controller controller
Indoor Indoor
Unit Unit
Remote Remote
controller controller
Indoor Indoor
Unit Unit
Remote Remote
controller controller
Indoor Indoor
Unit Unit
Remote Remote
controller controller
CAUTION
!
• Use the 2-core shield cables for communication cables. Never use
them together with power cables.
• The conductive shielding layer of cable should be grounded to the
metal part of both units.
• Never use multi-core cable
• As this unit is equipped with an inverter, to install a phase leading
capacitor not only will deteriorate power factor improvement effect,
but also may cause capacitor abnormal heating. Therefore, never in-
stall a phase leading capacitor.
• Make sure that the power unbalance ratio is not greater than 2%. If
it is greater the units lifespan will be reduced.
Precautions when laying power wiring
Use round pressure terminals for connections to the power terminal
block.
Round pressure terminal
When none are available, follow the instructions below.
- Do not connect wiring of different thicknesses to the power terminal
block. (Slack in the power wiring may cause abnormal heat.)
- When connecting cable which is the same thickness, do as shown in
the figure below.
- For wiring, use the designated power cable and connect firmly, then
secure to prevent outside pressure being exerted on the terminal
block.
- Use an appropriate screwdriver for tightening the terinal screws. A
screwdriver with a small head will strip the head and make proper
tighterning impossible.
- Over-tightening the terminal screws may break them.

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 in-
door units with shielded cable, connect the shield ground to the earth
screw.
Power cable
Front Panel