Operation Manual

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Siemens Schweiz AG User Manual CE1U2354en
HVAC Products Solar 23. August 2007
6.14 Solar
Charging controller (dT)
Line no. Operating line
3810 Temperature differential ON
3811 Temp diff off
3812 Charg temp min DHW st tank
3815 Charging temp min buffer
3818 Charging temp min swi pool
For charging the storage tank via the heat exchanger, the temperature differential
between collector and storage tank/swimming pool must be sufficient, and the collector
must have reached the minimum charging temperature for the storage tank/swimming
pool.
T
t
TSp
Tkol
SdOn
SdOff
On
OFF
2358Z12
TLmin
Tkol collector temp
On / Off Collector pump
SdOn Temperature differential ON
SdOff Temperature differential OFF
TSp Storage tank temperature
TLmin Charging temp min DHW storage tank / buffer / swimming pool
Priority
Line no. Operating line
3822 Charging prio storage
tank
None
DHW storage tank
buffer storage tank
3825 Charging time relative prio
3826 Waiting time relative prio
3827 Waiting time parallel op
3828 Delay secondary pump
The priority circuit for the swimming pool (operating line 2065) can impact storage tank
priority of solar charging and possibly charge the swimming pool before the storage
tanks.
If a plant uses several heat exchangers, it is possible to set a priority for the integrated
storage tanks, which defines the charging sequence.
None
Every storage tank is charged alternately by 5 °C at a time, until every setpoint of level
A, B or C (see below) is reached. The setpoints of the next higher level are approached
only when all setpoints of the previous level have been reached.
Charging prio storage tank