In case of, for instance, a holiday:
Heating and hot water OFF:
Press the - key of both keys until the lowest value
has been reached. Release the key and press
the – key once again. The display is showing --.
The program has thus disabled. The arrow to the
left is off.
In case of work on the heating installation:
Make sure no heat request occurs: let no hot water
tap run and set the room thermostat to low. Pull
the plug from the wall socket. If the installation is
being drained, you have to take into account that
part of the heating water will remain in the boiler.
Make sure that the remaining heating water in the
boiler cannot freeze in case of frost.
6 Decommissioning the boiler
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