Siemens Albatros2 AVS37 User Manual Page 88

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Siemens Switzerland Ltd User Manual CE1U2353en
HVAC Products Solar 02.06.2009
Overtemperature protection for the collector
Line no. Operating line
3850 Collector overtemp prot
If there is a risk of overtemperature at the collector, storage tank charging is continued
to reduce the amount of surplus heat. When the storage tank safety temperature is
reached, charging will be stopped.
2358Z14
Tkol
TKolUe
TSpMax
C
C
T
t
TSp
TSpSi
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
Medium’s evaporation temperature
Line no. Operating line
3860 Evaporation heat carrier
If there is a risk of the heat carrying medium evaporating due to high collector
temperatures, the collector pump will be deactivated to prevent it from reaching
excessive temperatures. This is a protective pump function.
The solar pump motor speed is limited by a minimum and maximum permitted speed.
Yield measurement
Line no. Operating line
3880 Antifreeze
3881 Antifreeze concentration
3884 Pump capacity
The 24-hour and total solar energy yield (operating lines 8526 and 8527) is calculated,
based on these data.
Since the mixing ratio of the collector medium has an impact on heat transmission, the
type of antifreeze used and its concentration must be entered in order to be able to
determine the energy yield.
The flow rate in l/h of the pump used must be determined and serves for calculating the
volume delivered.
Pump speed
Minimum/maximum
A
ntifreeze
Pump capacity
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