AirStage ASUA7RLAV Installation Manual - Page 8

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5.2. Wiring method

EXAMPLE
Power supply
Breaker 1
Breaker 2
Outdoor unit
Transmission
Power supply
Indoor unit
Transmission
Power
supply
Remote
control
Breaker 2
Breaker 2
Breaker 1
Breaker 1
Remote
controller
Power supply
Power supply
(Crossover wiring of power supply)
Indoor unit
Power
Remote
supply
control
Pull box
Breaker 2
Breaker 1
Remote
controller
Power supply

5.3. Unit wiring

Before attaching the cable to terminal block.
5.3.1. Power supply cable
For U.S.A. and Canada
Earth (ground)
wire
For Others
Earth (ground)
wire
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 wires, 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.
En-7
Breaker 1 : Earth leakage breaker
(GFCI breaker)
Breaker 2 : Current breaker
(MOP breaker)
Indoor unit
Transmission
Power
Power
supply
supply
Breaker 2
Breaker 1
Power supply
Indoor unit
Power
Power
supply
supply
Pull box
Conduit connector
6-5/16 in. (160 mm)
5-29/32 in. (150 mm)
Conduit holder
1-3/8 in. (35 mm)
31/32 in. (25 mm)
Strip 31/32 in.
(25 mm)
Cable
Indoor unit
Transmission
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
Remote
and cause the cables to abnormally heat up.
control
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.
Remote
(3) Use the specifi ed cables, connect them securely, and fasten them so that there is no
controller
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.
Indoor unit
(5) Do not tighten the terminal screws too much, otherwise, the screws may break.
Remote
(6) See the table for the terminal screw tightening torques.
control
(7) Please do not fi x 2 power supply cables with 1 screw.
Strip 13/32 in.
(10 mm)
Remote
controller
Cable
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.
(Power supply / L1, L2 (N), GND)
5.3.2. Transmission cable
• 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.
(Transmission /X1, X2)
Screw with
special washer
Cable end (Loop)
Terminal block
WARNING
Screw with
special washer
Ring terminal
Terminal block
WARNING
Tightening torque
M4 screw
1-9/16 in. (40 mm)
Shielded wire
1-3/16 in. (30 mm)
(no fi lm)
Prohibited
Different diameter
WARNING
Tightening torque
M4 screw
Loop
Screw with
special washer
Cable end (Loop)
Cable
Ring terminal
Sleeve
Screw with
special washer
Ring terminal
Cable
11 to 16 lbf·in
(1.2 to 1.8 N·m)
Prohibited
Connect to 1 side
4.4 to 5.3 lbf·in
(0.8 to 1.2 N·m)