System Control - Sanyo SPW-C256VH Technical Data & Service Manual

2-8. System Control

System control refers to the link wiring connection for control of simultaneous operation multi systems, group
control, and main-sub remote controller control.
2-8-1.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)
Ground
Leakage breaker
Leakage breaker
Indoor
unit
Ground
(for 3-phase outdoor unit)
Outdoor unit
Leakage breaker
1 L 2 L 3 L
Ground
Leakage breaker
Indoor
unit
Ground
System address rotary switch
(Set to "0" at the time of shipment.)
Outdoor unit
L N 1 2
Inter-unit control wiring
L
N
U1
U2
1
2
Ground
WHT BLK
Remote controller wiring
1 2
(Optional)
Wired remote
controller
System address rotary switch
(Set to "0" at the time of shipment.)
N 1 2
Inter-unit control wiring
L
N
U1
U2
1
2
Ground
BLK
WHT
Remote controller wiring
1 2
(Optional)
Wired remote
controller
For a simultaneous operation multi
system, a maximum of 4 indoor units
can be connected to 1 outdoor unit.
L
N
Indoor
Indoor
U1
unit
unit
U2
1
2
Ground
Remote controller communication
wiring for group control
Fig. 2-5-1
For a simultaneous operation multi
system, a maximum of 4 indoor units
can be connected to 1 outdoor unit.
L
N
Indoor Indoor
U1
unit unit
U2
1
2
Ground
Remote controller communication
wiring for group control
Fig. 2-5-2
2-5
L
N
U1
U2
1
2
L
N
U1
U2
1
2
2