En-10
Fig. 2
NOTE:
Do not use loop wiring.
This may lead to parts
damage and erroneous
operation.
Outdoor unit
Indoor unit
Signal Ampli
fi
er
System
Controller
Touch
Panel
Controller
Transmission line
Terminal resistor
Terminal resistor
NS 1
NS 2
F
H
L
G
K
J
E
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 outdoor
units under the same refrigerant system.
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: Ground Fault Equipment
Breaker (GFEB)
Breaker 2: Maximum Circuit Breaker
(MAX. CKT. BKR)
Power supply
208/230V ~ 60Hz
To other refrigerant circuit
outdoor unit
Outdoor unit
Transmission
Transmission
Transmission
Transmission
Transmission
Power supply
Remote control
Remote control
Remote control
Power supply
Power supply
Power supply
Indoor unit
Power supply
208/230V ~ 60Hz
Remote
controller
*1
*1
*1
Remote
controller
Remote
controller
Power supply
208/230V ~ 60Hz
Power supply
208/230V ~ 60Hz
Indoor unit
Indoor unit
Breaker 1
Breaker 1
Breaker 1
Breaker 1
Breaker 2
Breaker 2
Breaker 2
Breaker 2
*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.
• There are two types of remote controller: the 2-wire type and the 3-wire type. For details,
see the relevant remote controller installation manual. (When connecting the 2-wire type
remote controller, Y3 is not used.)
The wiring example for outdoor and indoor units is shown in
fi
gure.
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.
9380545095_IM.indb 10
9380545095_IM.indb 10
11/17/2015 4:14:26 PM
11/17/2015 4:14:26 PM
