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10-16. System Control
System control refers to the link wiring connection for control of simultaneous-operation multi systems, group con-
trol, and main-sub remote controller control.
10-16-1. Basic wiring diagram 1
Single type and simultaneous-operation multi system
●
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.)
●
Be careful to avoid miswiring when connecting the wires. (Miswiring will damage the units.)
(for single-phase outdoor unit)
Example: Using a wireless remote controller
with a simultaneous-operation multi system
Leakage breaker
Inter-unit control wiring
Leakage breaker
Wall-
mounted
type
Indoor
unit No. 1
Wireless remote
controller
When using wall-mounted units in a simultaneous-operation multi
*
system, connect the remote controller crossover wiring to the remote
controller connector (2P) on the main unit, as shown in the diagram.
DC̲Inverter̲Eng.indd 79
DC̲Inverter̲Eng.indd 79
System address (S2)
(Setting at shipment:
"0")
Outdoor unit
L N
1 2
L
L
Wall-
N
N
mounted
type
1
1
2
2
Indoor
unit No. 2
2P
(white)
Connection to
lead wire (white/black)
For group control (wiring locally supplied)
Remote controller crossover wiring
2
(Dia. 0.5 to 2 mm
)
Total length of wiring 200 m or less
Fig. 10-13-1
(Using a wired remote controller with a
single-type system)
1. Wall-mounted units do not include a
terminal plate for connecting a remote
controller.
2. To connect the remote controller,
a remote controller cord is required.
Leakage breaker
L
Wall-
N
mounted
type
1
L
2
N
Indoor
Out-
unit No. 3
door
1
2
unit
Wired remote
white black
79
Leakage breaker
4P
terminal
L
plate
N
Indoor
1
unit
2
controller
(Field
supply)
1 2
2007/07/25 13:21:51
2007/07/25 13:21:51
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