Wiring System Diagram For Group Control - Sanyo C4272R S/C Installation Instructions Manual

07-115 SSHP_II 5/7/07 4:00 PM

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.
I Wiring procedure
Wire according to the diagram at right:
G
Address setting is executed automatically when
the outdoor unit is turned on.
I 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.
G 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).
Page 63
Remote
controller
Wire joint
Indoor unit
No. 1
U1 U2
Inter-unit
control
wiring
U1 U2
Outdoor unit
Remote
controller
(main)
Connection wiring
1 2
for group control
Wire joint
1 2 1 2
Indoor unit Indoor unit
No. 1 No. 2
U1 U2 U1 U2
U1 U2 U1 U2
Outdoor unit Outdoor unit
63
1 2
1 2
: Ground (earth)
(sub)
1 2
1 2 1 2
Indoor unit Indoor unit
No. 8
No. 3
U1 U2 U1 U2
U1 U2 U1 U2
Outdoor unit
Outdoor unit
: Ground (earth)
RC
(WD)