3831 F Min Run Time Collector Pump; 3834 F Collector Start Funct Grad; 3840 F Collector Frost Protection − − − − − − / -20 - Siemens Albatros2 RVA78.690 User Manual

Waiting time parallel op
Delay secondary pump
Collector start function
Collector start function on
Collector start function off
Collector start funct grad
Siemens
Building Technologies
If solar output is sufficient and solar charging pumps are used, parallel operation is
possible. In that case, the storage tank of the priority model can be the next to be
charged at the same time, in addition to the storage tank to be charged next.
Parallel operation can be delayed by introducing a waiting time. This way, in the
case of parallel operation, switching on of the storage tanks can be effected in
steps.
Setting (---) disables parallel operation.
Commissioning of secondary pump for the external heat exchanger can be
delayed. This prevents heat loss through any cold water still in the primary circuit.
6.6.3 Collector start function
Line no. Operating line
3830 Collector start function
3831 Min run time collector pump
3832 Collector start function on
3833 Collector start function off
3834 Collector start funct grad
If the temperature at the collector (especially in the case of vacuum tubes) cannot
be correctly acquired when the pump is deactivated, the pump can be activated
from time to time.
This setting defines the interval at which the collector pump is put into operation.
Then, the pump will operate for the set time "Min run time collector pump" (3831).
This defines the time of day from which the collector start function is enabled.
This defines the time of day from which the collector start function is deactivated
(e.g. during the night).
The collector pump is switched on as soon as the temperature rise on the collector
sensor achieves the set gradient.
6.6.4 Collector frost protection
Line no. Operating line
3840 Collector frost protection
When there is risk of frost at the collector, the collector pump is activated to prevent
the heat-carrying medium from freezing.
• If the collector temperature falls below the frost protection temperature, the
collector pump is activated: TKol < TKolFrost.
• When the collector temperature returns to a level of 1 K above the frost
protection temperature, the collector pump is deactivated again: TKol >
TKolFrost + 1.
Solar compact controller
The settings in detail
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CE1U2396en
18.08.2010