
26
Protective functions
7. Protective
functions
Menu “7. Protective functions” can be
used by specialists to activate and set
various protective functions. The menu is
closed by pressing “esc” or selecting “Exit
settings”.
This does not under any cir-
cumstances replace the safety
facilities to be provided by the
customer!
Caution
Switching the frost protection function off or setting the minimum
fl
ow
temperature too low can lead to severe damage of the system.
Caution
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
Frost protection function can be activated for the heat circuit. If the outdoor tempera-
ture 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 temperature 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
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
7.1 Anti-seizing protection
7.2 Frost protection
7.3 min.
fl
ow temperature