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Siemens
User Manual
CE1U2357en
Building Technologies
6 The settings in detail
2014-07-30
6.6 Solar
Charging controller (dT)
Line no.
Operating line
3810
Temp diff on
3811
Temp diff off
3812
Charg temp min DHW st tank
To charge the DHW storage tank via the heat exchanger, a certain temperature
differential between collector and storage tank is required, and the minimum charging
temperature must be reached.
Tkol
Collector temp
On / Off
Collector pump
SdEin
Temperature differential ON
SdAus
Temperature differential OFF
Start function
Line no.
Operating line
3830
Collector start function
3831
Min run time collector pump
If the collector temperature cannot be accurately acquired during the time the pump is
deactivated (especially in the case of vacuum tubes), the pump can be switched on
from time to time.
The function periodically activates the collector pump for at least the selected minimum
running time.
Frost protection for the collector
Line no.
Operating line
3840
Collector frost protection
When there is risk of frost at the collector, the collector pump will be activated to
prevent the heat-carrying medium from freezing.
·
If the collector temperature falls below the frost protection temperature, the
collector pump will be activated: TKol < TKolFrost
·
When the collector temperature returns to a level of 1 °K above the frost protection
temperature, the collector pump will be deactivated again: TKol > TKo 1
Overtemperature protection for the collector
Line no.
Operating line
Collector start function
Min run time collector
pump
T
t
TSp
Tkol
SdEin
SdAus
On
OFF
2
3
5
8
Z
1
2