63
S4179544
0
0
0
0
0
C
-
-
-
-
-
RC
=
=
=
=
=
WT
6-3. Wiring System Diagram for Group Control
This diagram shows when several units (maximum of
8) are controlled by a remote controller (master unit).
In this case, a remote controller can be connected at
any indoor unit.
Wiring procedure
Wire according to the left diagram:
●
Address setting is executed automatically when the
outdoor unit is turned on.
●
Each successive unit will respond at one-second
intervals following the order of the group address
when the remote controller is operated.
●
Group control using 2 remote controllers.
It does not matter which of the 2 remote controllers
you set as the main controller.
Cautions on group control
●
Group control within the same refrigerant
tubing system is recommended.
[Tubing system which is not recommended]
NOTE
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, turn its remote
control address switch (RCU. ADR) located on its
PCB from OFF to ON (OFF: when shipped from
factory).
Example.1
In the ECO multi system, group control
extending over tubing systems be
comes impossible to set, giving rise to
indoor units which cannot operate.
While group 4 is in heating operation, if later group 3
begins cooling operation, indoor units 1, 2 of group 3
can be operated, but the indoor units 3-6 of group 4
cannot operate.
0195_M_I
3
4
5
6
2
1
2
1
3
2
1
3
2
1
Indoor Units
Outdoor units
Group 4
Group 3
Group 2
Group 1
Remote
controller
Group address
Tubing system 1
Tubing
system 2
1 2
1 2 3
1 2
1 2
1 2 3
1 2
1 2 3
1 2
1 2 3
: Ground (earth)
Outdoor unit
Indoor unit
No. 8
Indoor unit
No. 3
Indoor unit
No. 2
Indoor unit
No. 1
1 2 3
Remote
controller
Connection wiring for
group control
0800_M_I
Inter-unit
control
wiring
Terminal
3P
(sub)
1 2 3
3P terminal
base for remote
control wiring
Remote
controller
(main)
0801_M_I
1 2 3
Indoor unit
No. 1
: Ground (earth)
Indoor unit
No. 2
Indoor unit
No. 8
Indoor unit
No. 3
Connection wiring
for group control
1 2 3
1 2 3
1 2 3
1 2 3
