Wiring Connection - LG MULTI V ARNU243TSA4 Installation Manual

Wiring Connection

Connect the wires to the terminals on the control board individually according to the outdoor unit connection.
• Ensure that the color of the wires of outdoor unit and the terminal No. are the same as those of indoor unit respectively.
Terminal Block Indoor
L(L1) N(L2) YL
WIRED REMOTE
POWER INPUT
CONTROLLER
Connection method of the connecting cable(Example)
Lock nut
Conduit
WARNING : Loose wiring may cause the terminal to overheat or result in unit
malfunction. A fire hazzard may also exist. Therefore, be sure all wiring is tightly
connected.
WARNING : Make sure that the screws of the terminal are free from looseness.
u Precautions when laying power and ground wiring
Use round pressure terminals for connections to the power terminal block. When laying ground wiring, you must use round
pressure terminals.
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 wiring which is the same thickness, do as shown in the figure below.
• For wiring, use the designated power wire 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.
Terminal block of outdoor unit
Terminal Block Indoor
ODU IDU
RD BK A B
B A B
COMMUNICATION LINE(IDU-ODU)
Power supply cord
Power wire(Ground wire)
Round pressure terminal
INTERNET DRY1 DRY2 GND 12V
A B A - - - -
Remote controller cord
Installation Manual 9
Installation
Transmission cord