Installation Shutdown; Antifreeze Protection - DeDietrich AFC 30 User Manual

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5.4

Installation shutdown

5.5

Antifreeze protection

15/07/2015 - 300026440-05
Comfort periods / Filling enabled:
P1 P2 _______________ P3 _______________ P4 _______________
_______________
If the central heating system is not used for a long period, we
recommend switching the boiler off.
4 Switch the On/Off switch to Off.
4 Switch off the boiler electrical power supply.
4 Close the oil inlet.
4 Ensure that the boiler and system are protected against frost
damage.
4 The boiler and the chimney must be swept carefully.
4 Close the door of the boiler to prevent the internal circulation of
air.
4 Remove the pipe connecting the boiler to the chimney and plug
the nozzle.
4 Drain the domestic water tank and pipes (For models with
domestic hot water production).
When the heating water temperature in the boiler is too low, the
integrated boiler protection system starts up. This protection functions
as follows:
4 If the water temperature is lower than 7°C, the heating pump starts
up.
4 If the water temperature is lower than 4°C, the boiler starts up.
4 If the water temperature is higher than 10°C, the boiler shuts down
and the circulation pump continues to run for a short time.
4 If the water temperature in the storage tank is less than 4°C, it is
reheated to its set point.
5. Operating the appliance
26