P01432Q-rev.1
15
5.7.3 Setting for Auxiliary Heater
Auxiliary heater setting is disabled by default.
Refer to "Function Selection by Wired Controller" section for details.
5.7.2 Auxiliary Heater Connection
When the auxiliary heater shall be used, wire the circuit as shown below.
Example of Electrical Wiring
1
2
3
CN7
7
8
9
TB2
Power Supply
for Relay (DC24V)
Electric
Heater
(1 fuse in case of single power supply and
2 fuses for three phase power supply)
Xa
Power Supply for
Auxiliary Heater
Thermal
Fuse
X
1
X
2
X1
X2
Xa
Relay and 3 Pin Connector Kit
(PSC-5RA)
Unit Side (Responsible)
Field Installation Side (Out of Responsibility)
Automatic
Cutout
Wired Controller
1
2
3
4
CN1925
PCB1
Indoor Unit
PCB1:
Pins 3 and 4 of CN1925
1
2
3
4
1
2
3
Connector Cable
(PCC-CN1925-H)
When PSC-5RA (optional part, required) is used for connection between the auxiliary heater and indoor unit
DO NOT connect connector (CN7) to indoor unit PCB.
Otherwise, fire may result.
Use connector cable
(optional part, required)) between the connector (CN7) of PSC-5RA and indoor unit PCB connector (CN1925).
Connector (CN3) can be used for input integration functionality. Use another PSC-5RA for output integration
functionality.
