Fujitsu ARXG-KLLAP Series Installation Manual page 12

3.6.2. Connection cable preparation
■ Connection cable
Keep the earth (ground) wire longer than the other wires.
Earth (Ground)
wire
• Use a 4-core wire cable.
■ Remote controller cable
For 2-wire type
30 mm
3.6.3. How to connect wiring to the terminals
■ Caution when wiring cable
To strip off the insulation of a lead wire, always use a special tool such as a wire stripper.
If there is no special tool, carefully strip off the insulation by using a knife or other utensil.
(1) Use ring terminals with insulating sleeves as shown in the fi gure to connect to the
terminal block.
(2) Securely clamp the ring terminals to the wires by using an appropriate tool so that the
wires do not come loose.
Strip : 10 mm
(3) Connect specifi ed wires securely, and fasten them so that there is no stress applied on
the terminals.
(4) Use a screwdriver with an appropriate bit size to tighten the terminal screws. Using of
screwdriver with inappropriate bit size will damage the screw heads, and the screws
will not be tightened properly.
(5) Do not overtighten the terminal screws. Otherwise, the screws may break.
Screw with special washer
Ring terminal
Wire
Terminal blocks
(6) Refer to the table for the terminal screw tightening torques.
(7) Please do not fi x 2 power supply cables with 1 screw.
Tightening torque [N·m (kgf·cm)]
M4 screw
3.6.4. Connection wiring
• Be careful not to mistake the power supply cable and connection wires when install-
ing.
• Install so that the wires for the remote controller will not come in contact with other
connection wires.
(1) Remove the control box cover
(2) Connect the connection cable.
En-12
Connection cable
For 3-wire type
30 mm
Ring terminal
Sleeve
Screw with special washer
Ring terminal
Wire
1.2 to 1.8 (12 to 18)
CAUTION
Cover
Screw
■ Connection cable
Earth (ground)
■ Remote controller cable
DIP switch
3-wire type
Y1 Y2 Y3
TO REMOTE CONTROL UNIT
Black
White
Red
Earth
Remote controller
Connecting the
Set to "3 WIRE"
Optional parts
*Earth (Ground) the remote controller if it has a earth (ground) wire.
NOTES: Be sure to change the DIP SW to the corresponding remote controller.
When a 2-wire remote controller is connected to a "3WIRE" setting, power will
not be supplied.
When a 3-wire remote controller is connected to a "2WIRE" setting, a
communication error will be detected.
(3) After wiring is complete, secure the remote controller cable, connection cable with
the cable clamps.
Connection cable
(power supply)
Ceiling
Do not bind the power supply cable and other cables together.
1 2 3
Control line
Power line
Connection cable
Outdoor
(power supply)
unit
Print circuit board
2-wire type
1 2 Y1 Y2 Y3
Ex IN TO REMOTE CONTROL UNIT
White
Red
Remote Earth
controller
cable
Remote controller
Factory setting "2 WIRE"
Remote controller
cable
Connection cable
(power supply)
Cable clamp
Cable tie
(medium, accessories)
Avoid covering the air
inlet with the wiring.
Avoid touching the ceiling
with the wiring
(PCB)
1 2
Ex IN
Remote
controller
cable