The collector pump runs continuously, if the collector temperature is < SOLP-04.
The variable speed pump runs with minimum speed (PMP-04).
When the solar panel plant is filled with glycol, no setting change is necessary, since for SOLP-04 = -55 °C this function is disabled.
This function has to be enabled when a solar collector is filled with water. In this case SOLP-04 shall be set to a value greater or equal to 4 °C.
If the collector temperature gets higher than SOLP-04 + 5 K, the collector pump switches of after a delay of 10 minutes.
Table 13. Parameter List
Description |
Value Range |
Default Value |
Unit |
SOLP-04: solar panel freeze protection |
-55…20 |
4 |
°C |
PMP-04: minimum pump speed |
0…100 |
30 |
% |