Wiring System Diagram; Connection Cable Preparation; Connection Of Wiring - Fujitsu ARHG12LLTB Installation Manual

6.1. Wiring system diagram

Connection cable to outdoor unit or BRANCH BOX
Type 60245 IEC57
INDOOR UNIT Cable size 1.5 mm
(Inter-unit)
TERMINAL
Power lines
Grounding line
Wired remote controller cable
Tighten the indoor unit connection cable and power supply indoor and outdoor unit,
branch box terminal board connections firmly with the terminal board screws. Faulty
connection may cause a fire.
If the indoor unit connection cable and power supply are wired incorrectly, the air
conditioner may be damaged.
Connect the indoor unit connection cable by matching the numbers of the outdoor,
branch box and indoor units terminal board numbers as shown in terminal label.
Earth both the indoor and outdoor, branch box units by attaching a earth cable.
Unit shall be grounded in compliance with the applicable local and national cables.
Be sure to refer to the above diagram for do correct field wiring. Wrong wiring causes
malfunction of the unit.
Check local electrical rules and also any specific wiring instructions or limitation.

6.2. Connection cable preparation

Keep the earth wire longer than the other wires.
Earth wire
• Use a 4-core wire cable.

6.3. Connection of wiring

(1) Remove the control box cover from the control box.
En-11
OUTDOOR UNIT or
2
BRANCH BOX
Power line
Control line
Please connect it to
the specified terminal.
Red
White
*Ground the remote controller
Black
(Please connect it when necessary.)
Indoor
unit side
CAUTION
CAUTION
Power supply cable
or connection cable
Screw
Control box cover
Remove the 4 screws
and remove the control
box cover from the
control box.
(2) Cable connection
• Connect the connection cable to the terminal board.
• Connect the remote controller cable to the terminal board.
• Fix the remote controller cable to the control box cover with a nylon clamp.
Remote controller cable
1: Red
2: White
3: Black
Earth
Binder (Medium)
(Accessories)
Power supply cable
Remote controller cable
Binder (Medium)
(Accessories)
Power supply cable