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Recooling
In the system hydraulics with solar, excess energy is guided from the storage back to the collector with an activated return cooling func-
tion. This only occurs if the temperature in the storage is greater than the value “Return cooling Tref” and the collector is at least 20 °C
colder than the storage and until the storage temperature has fallen below the value “Return cooling Tref”. For muti-storage systems, the
return cooling applies to all storage.
Energy is lost through the collector through this function! The recooling should only be activated in cases of exception, with
low heat acceptance, for example, during vacation.
Frost Protection
A 2-level frost protection function can be activated. In level 1, the controller turns on the pump every hour for 1 minute if the collector tem-
perature is below the set value “Frost Level 1”. If the collector temperature continues to decrease to the set value “Frost Level 2”, the con-
troller will turn on the pump without disruption. If the collector temperature exceeds the value “Frost level 2 by 2 °C, the pump will turn
off again.
Energy is lost through the collector through this function! It is normally not activated for solar systems with antifreeze. The oper-
ating manuals from the other system components must be observed.
Seizing Protection
If the anti-seizing protection is activated, the controller switches the heat pump and the mixer on/off at 12:00 noon or weekly on Sundays
at 12:00 for 5 seconds to prevent seizing of the pump/valve after long periods of inactivity.
Collector alarm
If this temperature at the collector sensor is exceeded when the solar pump is turned on, a warning or error notification is triggered.
There is a corresponding warning in the display.
6. Special Functions
Used to set basic items and expanded functions.
The settings in this menu should only be changed by a specialist.
Program selection
Here the hydraulic variation fitting to the respective use case is selected and set.
The program selection normally occurs only once during the first entry into service by a specialist. An incorrect program selec-
tion may lead to unpredictable errors.
Pump settings
Settings from the 0-10V or the PWM pump can be made in this menu.
When this menu is selected, you may receive a request to save the speed settings.
Profile
In this menu, the preset profiles for actuators can be selected or under “manual all settings can be done personally. The settings can
still be changed after a profile has been selected.
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