En-11
6. 5. 2. Wiring procedure
• Remove
the
service
panel.
And connect the cable to the terminal in accordance with
the terminal name plate.
• Use a ring terminal to connect the electric cables to the power supply terminal board.
• Keep
the
earth
cable
longer than the other cables.
• After connecting the electric cable, secure them with a cable clamp.
• Connect
the
cable
without
applying excessive tension.
• Use
the
speci
fi
ed cable type and connect the cable securely.
Secure with a cable clamp as shown in the
fi
gure below.
Tightening torque
M3 screw
0.5 to 0.6 N·m (5 to 6 kgf·cm)
M5 screw
2.0 to 3.0 N·m (20 to 30 kgf·cm)
Power supply cable
Power supply terminal
Transmission terminal (M3)
Ring terminal (M5)
Cable clamp
Cable clamp
earth cable
Cable tie (accessory)
Transmission cable
8~1
0 mm
45~50mm
25~30mm
25~40mm
Cable tie (accessory)
Sealing transmission cable
Connect both ends of the sealed wires of the transmission cable to the earth terminal of
the equipment or to the earth screw near the terminal.
Be very careful that the screws are not overly tightened as the cables may snap and the
terminal may be damaged.
How to connect wiring to the terminal
Caution when wiring cable
(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 speci
fi
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 below for the terminal screw tightening torques.
Sleeve
Strip : 10mm
Ring terminal
Cable
Screw with special washer
Ring terminal
Terminal blocks
Screw with special washer
Cable
Ring terminal
6. 4. 3. Enabling/Disabling automatic address setting
You can enable/disable automatic address setting for the indoor unit and the signal
ampli
fi
er.
To enable automatic address setting for the indoor unit, connect the indoor unit to out-
door units under the same refrigerant system.(Fig.4)
Example: Disable Automatic Address setting
Refrigerant
system 1
Refrigerant
system 2
Refrigerant
system 3
Transmission line
Transmission line
Transmission line
Example: Enable Automatic Address setting
Refrigerant
system 1
Refrigerant
system 2
Refrigerant
system 3
Transmission line
Transmission line
Transmission line
6. 5. Wiring method
6. 5. 1. Connection diagrams
Breaker : (1) Earth leakage circuit breaker
(2) Current breaker (over current)
To other refrigerant circuit Outdoor unit
Power supply
Outdoor unit
Breaker
Indoor unit
Indoor unit
Indoor unit
Power supply
Remote
control
Transmission
Transmission
Remote
controller
Transmission
Power supply
Power supply
Power supply
Power supply
Power supply
Remote
control
Remote
control
Transmission
Breaker
Breaker
Breaker
Remote
controller
Remote
controller
*1: The number of power supply terminals is different depending on the indoor unit
model. For the wiring, refer to the indoor unit installation manual.
*2: Ground the remote controller if it has a ground cable.
*1
*1
*2
*2
*2
*1
The wiring example for outdoor and indoor units is shown in
fi
gure.
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9380545057_IM.indb 11
2014/9/15 11:27:05
2014/9/15 11:27:05
