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6-4. Wiring System Diagram for Group Control
This diagram shows when several units (maximum
of 8) are controlled by a remote controller (main
unit).
In this case, a remote controller can be connected
at any indoor unit.
■ Wiring procedure
Wire according to the diagram at right:
● Address setting is executed automatically when
the outdoor unit is turned on.
■ Group control using 2 remote controllers
It does not matter which of the 2 remote controllers
you set as the main controller.
When using multiple remote controllers (up to 2 of
them can be used), one is the main remote
controller and the other is the sub-remote
controller.
● To set up a sub-remote controller, change its
remote control address connector (RCU. ADR)
located on its PCB from main to sub position
(main: when shipped from factory).
(sub)
12
Wire joint
Remote
controller
(main)
: Ground (earth)
Connection wiring
for group control
12
U1
U2
U1
U2
U1
U2
U1
U2
U1
U2
U1
U2
U1
U2
U1
U2
1
2
Outdoor unit
Indoor unit
No. 1
1
2
Outdoor unit
Indoor unit
No. 2
1
2
Outdoor unit
Indoor unit
No. 3
1
2
Outdoor unit
Indoor unit
No. 8
U1 U2
U1 U2
1
2
: Ground (earth)
Outdoor unit
Indoor unit
No. 1
1
2
Remote
controller
Inter-unit
control
wiring
Wire joint
07-115 SSHP_II 5/7/07 4:00 PM Page 63