23
Protective functions
Menu 6
11
11
11.
Protective functions
Menu “6. Protective functions” can
be used by specialists to activate
and set various protective functions.
Caution
The menu is closed by pressing
“esc” or selecting “Exit settings”.
This does not under any
circumstances replace the
safety facilities to be provided
by the customer!
11.1 Anti-seizing protection
Menu 6.1
If the anti-seizing protection is activated, the controller switches the heat pump
and the mixer on/off at 12:00 pm for 5 seconds to prevent seizing of the pump/
valve after long periods of inactivation.
Settings range: on, off/ Default: on
11.2 Frost protection
Menu 6.2
Frost protection function can be activated for the heat circuit. If the outdoor
temperature at sensor S1 drops below 1 °C and the heat circuit is switched
off, the controller switches the heat circuit back on with the reference tem-
perature set in in menu 6.3 (min.
fl
ow temperature). As soon as the outdoor
temperature exceeds 1°C the heat circuit is switched off again.
Frost protection - settings range: on, off / Default: on
Switching the frost protection function off or setting the minimum
fl
ow
temperature too low can lead to severe damage of the system.
Caution
11.3 min. fl ow temperature
Menu 6.3
The minimum
fl
ow temperature is the lower limit for the characteristic curve/
slope and as a result of the reference
fl
ow temperature of the heat circuit.
Additionally, the min.
fl
ow temperature is the reference
fl
ow temperature for
the frost protection.
Settings range: 5°C to 30°C / Default: 15°C