
EN
13
• DHW VALVE
• EXTERNAL BACKUP HEATING
• ALARM / DEFROST
(1): DHW valve closing command. Phase output 230 Vac / 20 W max.
(2): Neutral
(3): DHW valve opening command. Phase output 230 Vac / 20 W max.
(4): Neutral
(5): Backup heating activation command. Phase output 230 Vac / 20 W max.
It is necessary to insert an external backup heating pilot relay (boiler, resistance, etc.).
(6): Neutral
(7): Alarm / defrost signaling. Phase output 230 Vac / 20 W max.
EXT.
5.2 - FULL CONFIGURATION
C
B
OUTDOOR UNIT
DATALOGGER 1
MODBUS GATEWAY
DATALOGGER 2
D
MODBUS
DATALOGGER 1
EXT.
SW3
A
B
OUTDOOR UNIT
C3
C3
C3
C4
C4
C4
C3
C4
C3
C4
C3
C4
5.3 - CONNECTIONS DETAILS