Test Run - Sanyo C4272R Service Manual

Basic wiring diagram 2
Group control (when a central control device is not used)
Simultaneous-operation multi system
A maximum of 8 indoor units can be connected to 1 remote controller.
Set the system address (refrigerant tubing system address) before turning on the remote power switch.
(Refer to "Setting the system addresses" on next page.)
(Set using the system address rotary switch on the outdoor unit control PCB.)
Ground
Power supply
Single-phase
230 / 208 V
Indoor
unit
U1
U2
RC
WHT
(Wiring procedure)
(1) Connect the remote controller to the indoor unit remote
controller wiring.
Use the remote controller connection wire coming from
the indoor unit, and field-supply wire and a wire joint to
complete the connection as shown in Fig. 6-6b. The
remote controller connection wire coming from the
indoor unit includes a connector, therefore cut off the
connector and use the wire joint to connect the wire
from the remote controller.
(2) Connect the indoor units (U1, U2) and the outdoor units
(1, 2).
Connect the other outdoor units and indoor units (with
different refrigerant systems) in the same way.
Connect the inter-unit control wiring to the indoor units
(U1, U2) for each refrigerant system.
(Inter-unit control wiring)
System address rotary switch
(Set to "0" at the time of shipment.)
Outdoor unit
L1 L2 1 2 G U1 U2
1
2
Remote controller wiring
BLK
(Field supply)
1 2
(Optional)
Wired remote
controller
Ground
Power supply
Single-phase
230 / 208 V
Indoor
unit
U1
U2
RC
Remote controller crossover wiring
for group control
Fig. 6-6a
Indoor
unit 1
RC
VI-7

6. Test run

System address rotary switch
(Set to "0" at the time of shipment.)
Outdoor unit
L1 L2 1 2 G U1 U2
1
2
Indoor Indoor
unit 2 unit 3
RC
BLK
WHT
1 2
(Optional)
Wired remote
controller
Fig. 6-6b
1
2
3
4
RC
5
6
SM831148