2
2-6
2-8-2. Basic wiring diagram 2
Group control (when a central control device is not used)
Simultaneous operation multi system
Up to 4 (Double-Twin) indoor units can be connected to 1 outdoor unit for operation.
(However, coordinate the outdoor unit capacity and the total capacity of the indoor units.)
(It is not possible to connect individual remote controllers for independent operation.)
A maximum of 8 indoor units can be connected to 1 remote controller.
When 2 or 3 indoor units are connected to each outdoor unit in the refrigerant system, set the system address (refrigerant
tubing system address) before turning on the remote power switch.
(Refer to 2-8-3. Setting the outdoor unit system addresses.)
(Set using the system address rotary switch on the outdoor unit control PCB.)
(for 3-phase outdoor unit)
1. Wall-mounted units do not include a terminal plate for connecting a remote controller.
2. For group control of wall-mounted units, connect the remote controller communication wiring to the remote controller
connector (2P) on the main unit, as shown in the diagram.
Fig. 2-6-2
Leakage breaker
Ground
Outdoor unit
System address rotary switch
(Change the setting.)
Leakage breaker
Leakage breaker
System address rotary switch
(Change the setting.)
Outdoor unit
Ground
Inter-unit control wiring
Indoor power crossover
wiring – up to 16 units
(no-heater units only)
Ground
Indoor
unit
Indoor
unit
Indoor
unit
Indoor
unit
Indoor
unit
Wired remote
controller
Remote controller communication
wiring for group control
Leakage breaker
Ground
Ground
Ground
Ground
Remote controller wiring
(Optional)
1 2
1
2
U2
U1
1
2
U2
U1
1
2
U2
U1
L
N
L
N
L
N
1
2
U2
U1
L
N
L
N
1
2
U2
U1
1 2
N
L3
L2
L1
N
L3
L2
L1
1 2
WHT
BLK
SM830159-03̲Elite̲PAC-i.indb 6
SM830159-03̲Elite̲PAC-i.indb 6
2010/11/12 15:50:01
2010/11/12 15:50:01
