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6. Protective Functions
The 'Protective functions‘ can be used by specialists to activate and set vari-
ous protective functions.
By no means does the controller replace the safety appliances on
site!
Seizing Protection
If the anti-seizing protection is activated, the controller switches the heat pump and the mixer on/off at 12:00 noon for 5 seconds to
prevent seizing of the pump/valve after long periods of inactivity.
Frost Protection
If the temperature on the outdoor sensor drops below 1 ° C and the heating circuit is switched off , the heating circuit is auto-
matically switched on if antifreeze is activated and the reference flow temperature will be set to the minimum flow temperature set
under see " Min. Flow " on page 17. As soon as the outdoor temperature exceeds 1 ° C, the heat circuit is switched off again.
Switching the frost protection function off or setting the minimum flow temperature too low can lead to severe damage
to the system.
Discharge Protection
When activated, the heating circuit pump is switched off when the specified flow temperature is not reached, even though the mix-
ing valve is at least somewhat open. Every 5 minutes, the system checks if the flow temperature has been reached.
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