Siemens AVS75.39 Series User Manual page 69

Remote control
Changeover of operating
mode
Frost protection for the
heating circuit
Siemens
Building Technologies
Line no.
HC1 HC2 HC3
900 1200 1500
In the case of external changeover via inputs H1 / H2 / H3, the operating mode to
be used can be selected.
Frost protection for the heating circuit is always active.
If the flow temperature falls below 5 °C, the controller switches on heating circuit
pumps – regardless of the present operating mode for heating.
When the flow temperature returns to a level above 7°C, the controller will switch
the pumps off again after 5 minutes.
User manual RVS43.345
The settings in detail
Operating line
Optg mode changeover
None ¦ Protection ¦ Reduced ¦ Comfort ¦ Automatic
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CE1U2354en_021
2013-09-02