Sanyo Big PACi 18 Series - Page 151

2
2-6
2-8-2. Basic wiring diagram 2
Group control (when a central control device is not used)
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.)
A maximum of 8 indoor units can be connected to 1 remote controller.
When 2 or 3 indoor units are connected to each outdoor unit in the refrigerant system, set the system address
(refrigerant tubing system address) before turning on the remote power switch.
(Refer to 2-8-3. Setting the outdoor unit system addresses.)
(Set using the system address rotary switch on the outdoor unit control PCB.)
(for 3-phase outdoor unit: X, T, U, D Types)
1
2
1
2
1
2
U2
U1
1
2
U2
U1
1
2
U2
U1
L
N
L
N
L
N
N L3L2L1
1
2
U2
U1
L
N
L
N
1
2
U2
U1
1
2N
L3L2L1
System address rotary switch
Change the setting.)
Inter-unit control wiring
Ground
Outdoor unit
Ground
Leakage breaker
Remote controller crossover
wiring for group control
Remote controller
wiring
Indoor
unit
WHT
BLK
(Optional)
Wired remote controller
Leakage breaker
Leakage breaker
System address rotary switch
(Change the setting.)
Outdoor unit
Leakage breaker
Indoor power crossover
wiring – up to 16 units
(no-heater units only)
Ground
Ground
Indoor
unit
Ground
Indoor
unit
Ground
Indoor
unit
Ground
Indoor
unit
(for 3-phase outdoor unit: XM Type)
1
2
1
2
1
2
U2
U1
1
2
U2
U1
1
2
U2
U1
L
N
L
N
L
N
N L3L2L1
1
2
U2
U1
L
N
L
N
1
2
U2
U1
1
2N
L3L2L1
System address rotary switch
(Change the setting.)
System address rotary switch
(Change the setting.)
Leakage breaker
Leakage breaker
Outdoor unit
Leakage breaker
Outdoor unit
Ground
Indoor
unit
Indoor
unit
Indoor
unit
Indoor
unit
Ground
Ground
Ground
Inter-unit control wiring
Ground
Ground
Remote controller wiring
Remote controller crossover wiring
for group control
(Optional)
Wired remote
controller
WHT BLK
Indoor
unit
Ground
Indoor power crossover
wiring – up to 16 units
(no-heater units only)
Fig. 2-6-1
Fig. 2-6-2
Leakage breaker
SM830161Book.indb6SM830161Book.indb6 2008/06/039:09:022008/06/039:09:02