Operation Manual
5 Operation
20 Instructions for use aroTHERM 0020151761_00
4.11 Setting the language
If you want to set another language:
▶ Press and hold and at the same time.
▶ Also press the fault clearance key for a short time.
▶ Press and hold and until the display shows the
language setting.
▶ Select the required language by pressing or .
▶ Press (OK) to confirm your selection.
▶ Once you have set the correct language, press (OK)
again to confirm this.
5 Operation
5.1 Switching the product on/off
▶ Use a partition with a contact opening of at least 3 mm
(e.g. fuses or power switches) to de-energise the product.
5.2 Activating frost protection
▶ To prevent the product from freezing, ensure that the
product is switched on.
5.3 Setting the target feed temperature in
heating mode
The actual target flow temperature is automatically determ-
ined by the system controller (you can find further information
about this in the operating instructions for the system control-
ler).
5.4 Setting a room thermostat or weather
compensator
2
1
▶ Set the room thermostat or the weather compensator (1)
and thermostatic radiator valves (2) as specified in the
relevant instructions for these accessories.










