Operation
18
Automatic functions
Window function
If you open a window so that the temperature drops strongly, the
radiator controller closes the radiator valve in order to save energy.
The message
is then displayed in the operating unit display.
When the temperature rises again the radiator controller returns to
normal operation, however at the latest after 30 minutes. The optional
window contact HAC 30 allows you to couple the closing of the
heating valve directly to the opening of a window.
Protection against lime
Once a week the drive unit opens and closes the radiator valve
automatically and thus protects it against lime deposits. The message
or is then displayed.
Anti-freeze
If the temperature drops below 6 °C, the drive unit opens the heating
valve until the temperature rises above 8 °C again. The symbol
flashes in the display. The anti-freeze function cannot be de-activated.
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