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4.5 Turning on the antifreeze function
We recommend setting the boiler thermostat to a value off 10°C if
using a classic installation.
Define parameter p4 as 1 (energy-saving mode), the heat
retention function will be deactivated.
Installation and room antifreeze protection is guaranteed if you are
absent.
If the temperature of the central heating water in the boiler falls too
much, the integrated protection device switches itself on:
4 If the water temperature is lower than 7°C, the circulating pump is
activated.
4 If the water temperature is lower than 3°C, the boiler is activated.
4 When the water temperature is above 10 °C, the boiler is switched
off and the circulation pump runs for another 15 minutes.
CAUTION
This function is a protection device for the boiler only, not
for the system or buiding fabric.
CAUTION
If a room thermostat, connected via connectors 7 and 8,
is activated, the boiler will operate permanently until it
reaches the flow setting point.
MCR-P 24 MCR-P 24/28 MI MCR-P 30/35 MI MCR-P 34/39 MI 4. Operating the appliance
070513 - 127684-01
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