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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 pump
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
switches 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 controller
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 activated
for solar systems with antifreeze. Observe the operating instructions for the other
system components!
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