Wiring Method; Unit Wiring; Power Supply Cable - Fujitsu AIRSTAGE ASYE07GACH Manual De Instalación

5.2. Wiring method

EXAMPLE
Outdoor unit or RB unit *1
Transmission
Indoor unit
Remote
Transmission
control
Power supply *2
*3
Breaker
Remote controller
Power supply
(Master)
*1: When connecting to the Heat Recovery System, refer to the installation manual of the
RB unit.
*2: Earth (Ground) the remote controller if it has an earth (ground) cable.
*3: When connecting the 2-wire type remote controller, Y3 is not used.
(Crossover wiring of power supply)
Indoor unit
Power supply
Pull box
Breaker
Power supply

5.3. Unit wiring

• Before attaching the cable to terminal block.

5.3.1. Power supply cable

Earth (Ground)
cable
A. For solid core wiring
(1) To connect the electrical terminal, follow the below diagram and connect after looping
it around the end of the cable.
(2) Use the specifi ed cables, connect them securely, and fasten them so that there is no
stress placed on the terminals.
(3) 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.
(4) Do not tighten the terminal screws too much, otherwise, the screws may break.
(5) See the table for the terminal screw tightening torques.
(6) Please do not fi x 2 power supply cables with 1 screw.
Strip 25 mm
Screw with
special washer
Cable
Cable end (Loop)
Terminal block
En-7
9377773098-01_IM.indb 7 9377773098-01_IM.indb 7
Indoor unit Indoor unit
Remote
control
*2 *2
*3
Breaker Breaker
Remote controller
Remote
(Slave) controller
Indoor unit
Indoor unit
Power supply
Power supply
Pull box
200 mm
220 mm
Loop
Screw with
special washer
Cable end (Loop)
Cable
When using solid core cables, do not use the attached 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.
*3
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.
M4 screw
(Power supply /L, N, GND)
5.3.2. Transmission cable
Shielded cable
(no fi lm)
• Connect transmission cables as shown in Fig. C.
Fig. C
Good
Tighten the terminal screws to the specifi ed torques, otherwise, abnormal overheating
may be produced and possibly cause heavy damage inside the unit.
M4 screw
(Transmission /X1, X2)
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.
WARNING
Ring terminal
Sleeve
Screw with
special washer
Ring terminal
Cable
WARNING
Tightening torque
1.2 to 1.8 N·m
(12 to 18 kgf·cm)
40 mm
75 mm
Prohibited
Different diameter
Connect to 1 side
WARNING
Tightening torque
0.8 to 1.2 N·m
( 8 to 12 kgf·cm)
CAUTION
7/12/2012 3:05:24 PM 7/12/2012 3:05:24 PM