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3.19 PUMP ANTI-BLOCK FUNCTION.
The boiler has a function that starts the pump at least once every
24 hours for the duration of 30 seconds in order to reduce the
risk of the pump becoming blocked due to prolonged inactivity.
3.20 THREE-WAY ANTI-BLOCK SYSTEM
Both in “domestic hot water” and in “domestic hot water-central
heating” phase the boiler is equipped with a function that starts the
three-way motorised group 24 hours after it was last in operation,
running it for a full cycle so as to reduce the risk of the three-way
group becoming blocked due to prolonged inactivity.
3.21 RADIATORS ANTIFREEZE FUNCTION.
If the system return water is below 4°C, the boiler starts up until
reaching 42°C.
3.22 ROOM ANTI-FREEZE FUNCTION.
When the room temperature drops below 5°C (adjustable, see
special functions chapter) a central heating request is made at
minimum of the power programmed. This situation remains active
until there is a variation in room temperature of 0.6°C equal to
5.6°C measured in the room where the remote panell is positioned.
