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Electrical Wiring - Fujitsu 9319357041 Installation Manual

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7. ELECTRICAL WIRING

Cable
Cable size
Connection cable
14AWG UL 1505
Max. Cable Length: Limit voltage drop to less than 2%. Increase cable gauge if voltage drop is
2% or more.
7.1. Wiring system diagram
Before connecting the wires, make sure the power supply is OFF.
Every wire must be connected fi rmly.
No wire should be allowed to touch refrigerant tubing, the compressor or any moving
part.
Loose wiring may cause the terminal to overheat or result in unit malfunction. A fi re
hazard may also exist. Therefore, be sure all wiring is tightly connected.
Connect wires to the matching numbers of terminals.
INDOOR UNIT SIDE
INDOOR UNIT
TERMINAL
DISCONNECT
SWITCH
(FIELD SUPPLY)
7.2. Indoor unit wiring
(1) Remove the wire cover. (Remove the 1 screw.)
(2) Remove the cable clamp. (Remove the 1 screw.)
(3) Bend the end of the connection cable as shown in the fi gure.
(4) Connect the end of the connection cable fully inserting into the terminal block.
(5) Fasten the connection cable with a cable clamp. (Attach the 1 screw.)
Cable clamp
Connection
cable
Terminal block
Cable clamp
Connection
cable
Earth (Ground)
wire
Connection cable
Earth
Indoor unit terminal block
(Ground)
screw
Disconnect switch
Remarks
3 cable+Earth (Ground),
1φ 208/230 V
WARNING
OUTDOOR UNIT
or BRANCH BOX
Power line
Connect it to
Control line
the specifi ed
Earthing
terminal.
(Grounding) line
Wire cover
Screw
Screw
Wire cover
Screw
Screw
Insert the wire cover tab into the square hole
of the indoor unit and fasten with a screw.
Outdoor unit or
Branch box
Please connect
it to the specified
terminal.
• To connect the indoor unit wires to the terminal correctly, refer to the fi gure for proper
length.
14AWG
25 mm
(1-13/32 in.)
140 mm
(5-1/2 in.)
7.3. How to the install the indoor unit wire harness
(1) Remove the screws, then remove the conduit holder.
(2) Fasten the indoor unit wire harness to the conduit holder using the lock nut.
IMPORTANT: Refer to [7.1. Wiring system diagram] about the length of indoor unit wire
harness.
(3) Use the screws to install the conduit holder provide with the indoor unit.
(4) Remove the screws, then remove the cable clamper.
(5) Connect indoor unit wire harness to the terminal.
Refer to the wiring diagram
(6) Use the screws to install the cable clamper.
Screw
Earth (Ground) wire
25 mm
(1-13/32 in.)
160 mm
(5/16 in.)
Conduit holder
Conduit connector
Lock nut
Conduit holder
Earth (Ground) wire
Conduit connector
En-7

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