Immergas V2 Instructions And Warnings page 44

3
CONTROL AND MAINTENANCE
3.1 DESCRIPTION OF MAIN FUNCTIONS
Three-way valves/anti-block pumps
The device is supplied with a function that makes the pumps start (or the zone valves) (according to the model installed) at least 1
once every 24 hours in order to reduce the risk of pump blocking due to prolonged inactivity. In the case of a configuration with mixed
zones, the same function also acts on the mixing valve in order to prevent and avoid the risk of blocking due to prolonged inactivity.
Post-circulation
System post-circulation can be performed, controlled by the boiler, in the system zone selected as the main zone (see installation layout).
Summer DHW/functioning priority
In the case of DHW or boiler functioning priority in Summer mode, all active pumps are deactivated and any mixing valves are closed.
Normal functioning of the zones re-starts at the end of the DHW phase, taking the boiler switch to the Winter position.
Mixing valve initialisation
(Only for configurations with mixed zones).
Every time that voltage is applied to the kit, initialisation of the mixing valves is carried out, closing the same for three minutes. In this
way synchronisation is performed between the P.C.B. and the mixing valve. The transfer of heat energy to the mixed zone can only take
place at the end of this initialisation phase.
Antifreeze
(Only for configurations with mixed zones).
The P.C.B. is supplied with a function that protects the Low-temperature system (mixed zones) if the system water drops below 5°C.
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