Argo AUAH Notice D'installation page 13

5.2 - FULL CONFIGURATION
5.3 - CONNECTIONS DETAILS
• DHW VALVE
(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.
• EXTERNAL BACKUP HEATING
EXT.
(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.).
• ALARM / DEFROST
(6): Neutral
(7): Alarm / defrost signaling. Phase output 230 Vac / 20 W max.
B
OUTDOOR UNIT
13
A
C
C3
MODBUS C3
C4
DATALOGGER 1 C4
C3 C3
C4
C4
C3 C3
C4
C4
B
D
SW3
EXT.
OUTDOOR UNIT
DATALOGGER 1
MODBUS GATEWAY
DATALOGGER 2
EG