Siemens AVS75.39 Series User Manual page 116

Collector start function on
Collector start function off
Collector start funct grad
Min collector start funct
Collector frost
protection
Collector
overtemperature
protection
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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).
When the temperature at the collector sensor rises, the collector pump is activated.
The collector pump may only be switched on if the collector sensor achieve the
measured temperature of the value entered here, at a minimum.
Line no. Operating line
3840 Collector frost protection
If there is risk of frost at the collector, the collector pump is put into operation to
prevent the heat transfer 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.
Line no. Operating line
3850 Collector overtemp prot
If there is a risk of over temperature at the collector, storage tank charging is
continued to reduce the amount of excess heat. When the storage tank's safety
temperature is reached, charging is stopped.
T
Tkol
TSpSi
TSp
On
Off
TSpSi Storage tank safety temperature
TSp Storage tank temperature
TKolUe Collector temperature for overtemperature protection
TSpmax Maximum charging temperature
Tkol Collector temperature
On/Off Collector pump
T Temperature
t Time
User manual RVS43.345
The settings in detail
1°C
TSpMax
TKolUe
1°C
t
CE1U2354en_021
2013-09-02