Connection Of Wiring - Fujitsu AirStage ARXC45GATH Installation Manual

When using solid core cables, do not use the ring terminal. If you use the solid core
cables with the ring terminal, the ring terminal's pressure bonding may malfunction
and cause the cables to abnormally heat up.
B. For strand wiring
(1) Use ring terminals with insulating sleeves as shown in the fi gure below to connect to
the terminal block.
(2) Securely clamp the ring terminals to the cables using an appropriate tool so that the
cables do not come loose.
(3) Use the specifi ed cables, connect them securely, and fasten them so that there is no
stress placed on the terminals.
(4) Use an appropriate screwdriver to tighten the terminal screws. Do not use a
screwdriver that is too small, otherwise, the screw heads may be damaged and
prevent the screws from being properly tightened.
(5) Do not tighten the terminal screws too much, otherwise, the screws may break.
(6) See the table for the terminal screw tightening torques.
(7) Please do not fi x 2 power supply cables with 1 screw.
Strip 10 mm
Screw with
special washer
Cable
Ring terminal
Terminal block
Use ring terminals and tighten the terminal screws to the specifi ed torques, otherwise,
abnormal overheating may be produced and possibly cause heavy damage inside the
unit.
Tightening torque
M4 screw
(Power supply/L, N, GND)
6.3.2. Transmission and Remote controller cable
Transmission cable
Shielded cable (no fi lm)
Remote controller cable
For 3-wire type
25 mm
• Connect remote controller and transmission cables as shown in Fig. B.
• When the 2 cables are attached.
Fig. B
GOOD
Different diameter
WARNING
Ring terminal
Sleeve
Screw with
special washer
Ring terminal
Cable
WARNING
1.2 to 1.8 N·m
(12 to 18 kgf·cm)
25 mm
35 mm
For 2-wire type
25 mm
PROHIBITED
Connect to 1 side
Tighten the terminal screws to the specifi ed torques, otherwise, abnormal overheating
may be produced and possibly cause heavy damage inside the unit.
Tightening torque
M3 screw (Transmission/X1, X2)
(Remote controller/Y1, Y2, Y3)
To peel the fi lm from the lead cable, use a dedicated tool that will not damage the
conductor cable.
When installing a screw on the terminal block, do not cut the cable by overtightening
the screw. On the other hand, an undertightened screw can cause faulty contact, which
will lead to a communication failure.
] 1

6.4. Connection of wiring

(1) Remove the control box cover and install each connection cable.
(2) After wiring is complete, clamp the remote controller cable, transmission cable and
power supply cable with cable tie.
When switching the DIP switch (SW1), be sure to turn off the power supply to the
indoor unit. Otherwise, the PC board of the indoor unit may be damaged.
Connect the remote
controller cable
Set the DIP switch
(SW1)
DIP switch
(SW1)
*1: If you connect the remote controller cable to the terminal
Y3, 2-wire type remote controller does not work.
Earth (ground)
WARNING
0.5 to 0.6 N·m
(5 to 6 kgf·cm)
CAUTION
Cover box
Loosen the screws.
(2 locations)
CAUTION
For 2-wire type For 3-wire type
Y1:Non-polar Y1:Red
Y2:Non-polar Y2:White
Y3:Do not connect *1 Y3:Black
2WIRE
3WIRE
(Factory setting)
Y1,Y2,Y3:
Remote controller
cable
X1, X2:
Transmission cable
Cable tie (Medium)
(Accessories)
L, N: Power supply cable
Cable clamp
En-8