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6. Protective functions
Menu “6. Protective functions” can be used
to activate and set various protective func-
tions.
Caution
The menu is closed by pressing “esc” or select-
ing “Exit settings”.
This does not under any circum-
stances replace the safety facilities to
be provided by the customer!
6.1 Seizing protection
If the Seizing protection is activated, then the controller switches the associated pumo
and/or valve on every day at 12:00 or on Sundays at 12:00 for 5 seconds in order to
prevent the pump and/or valve from sticking after an extended stationary period.
Setting range: daily, weekly, off / default value: Off
6.2 Frost protection (solar only)
A two-stage frost protection function can be activated. In stage 1 the controller switch-
es the pump on for 1 minute every hour if the collector temperature drops below the
set value “Frost stage 1”.
If the collector temperature drops further to the set value “Frost stage 2” the control-
ler switches the pump on continuously. If the collector temperature then exceeds the
value “Frost stage 2” by 2°C, the pump switches off again.
Frost protection setting range: on, off / default setting: off
Frost stage 1 setting range: from -25°C to 10°C or off / default setting: 7°C
Frost stage 2 setting range: from -25°C to 8°C / default setting: 5°C
Protective functions
Caution
This function causes energy to be lost via the collector! It is normally not acti-
vated for solar systems with antifreeze. Observe the operating instructions for
the other system components!
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