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START-UP AND OPERATING INSTRUCTIONS
20. FILLING THE SYSTEM
Before starting the user module, open the on/off valves on the hydraulic connectors and check the system lling pressure
in the boiler room and distribution columns (< 3 bar).
The centralised plant must have an automatic lling device.
21. AIR VENT AND PUMP RESET
21.1 AIR VENT
In the rst plant lling operation, vent any air in the system, including the user module. The appliance is tted with an
automatic air vent valve.
21.2 PUMP RESET
The user module is tted with a pump reset device which, if no heat demand (heating and/or domestic water) is received
for 24 consecutive hours, automatically runs the pump for one minute. This function is operative if the system is powe-
red.
If, however, the pump/s need/s to be reset after a period of inactivity or during initial starting, simply remove the cap scre-
wed onto the shaft, insert a screwdriver and turn the rotor a few times in order to reset it and allow it to start.
Collect the water owing from the pump shaft.
INSTALLATION AND OPERATING MANUAL
912.807.1 - GB
33
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