57
9-6-2. Basic connection 2 : Group control operation (when not using integrated control
system)
●
Turn on the system 1 indoor and outdoor units (earth leakage circuit breaker) and
make indoor unit auto address setting. (See Section 9-7.)
* It is possible to connect maximum 8 indoor units with one remote
controller. (Including indoor unit without remote control connection wiring)
* If there are two systems or more, specify the outdoor unit by using the
remote controller and make auto address setting.
When making group control of the different refrigerant system’s
wiring is necessary.
Two group control
Refrigerant system 1 Refrigerant system 2
Do not turn on the system 2
power supply yet.
Outdoor unit
Connection cable between
outdoor and indoor unit
Connection cable between
outdoor and indoor unit
Outdoor unit
Remote
controller
Remote control wiring
Remote control wiring
for group control
Remote control wiring for group control
(In case of 2 or 3 indoor units of
another outdoor unit.)
Indoor unit
Unit No.1
Unit No.2
No-add yet.
NOTE
●
While keeping the system 1 power on, turn on the system 2 indoor and outdoor units
(earth leakage circuit breaker).
Then make auto address setting of the indoor unit. (See Section 9-7.)
1 - 1 1 - 2
2 - 1 2 - 2 2 - 3
When making group control of the different refrigerant system’s
wiring is necessary.
* It is possible to connect maximum 8 indoor units with one remote
controller. (Including indoor unit without remote control connection wiring)
* If there are two systems or more, specify the outdoor unit by using the
remote controller and make auto address setting.
Two group control
Refrigerant system 1 Refrigerant system 2
Outdoor unit Outdoor unit
Remote
controller
Remote control wiring
Remote control wiring
for group control
Remote control wiring for group control
(In case of 2 or 3 indoor units
of another outdoor unit.)
Indoor unit
Unit No.1
Unit No.2
Connection cable between
outdoor and indoor unit
Connection cable between
outdoor and indoor unit
NOTE
01_330918_EU_Eng.indb 57 2021/9/9 11:26:59
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