
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 circum-
stances replace the safety facilities
to be provided by the customer!
Caution
Switching the frost protection function off or setting the minimum flow
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 temperature
at sensor S1 drops below 1 °C and the heat circuit is switched off, the controller swit
-
ches the heat circuit back on with the reference temperature set in in menu 7.3 (min.
flow 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 flow temperature is the lower limit for the characteristic curve/slope and
as a result of the reference flow temperature of the heat circuit. Additionally, the min.
flow temperature is the reference flow 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. flow temperature