Operation Manual

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Siemens Schweiz AG User Manual CE1U2354en
HVAC Products DHW storage tank 23. August 2007
0
1
B4/B42
Cooling
If the buffer storage tank was used to satisfy a heating request, it will be locked to all
refrigeration demand signals for 24 hours.
6.17 DHW storage tank
Charging control
The DHW request to the boiler is made up of the current DHW setpoint plus the
adjustable charging boost.
Heat transfer makes it possible to transport energy from the buffer storage tank to the
DHW storage tank. In that case, the actual buffer storage tank temperature must be
higher than the actual temperature of the DHW storage tank.
The temperature differential can be set here.
The storage tank can be charged using up to 2 sensors.
It is also possible to combine partial charging with 1 sensor and the legionella function
with 2 sensors (setting 3).
Overtemperature protection
Line no. Operating line
5050 Charging temperature max
Solar energy charges the DHW storage tank up to the adjusted maximum DHW
charging level.
The protective collector overtemperature function can reactivate the collector pump
until the maximum storage tank temperature is reached.
Recooling
Line no. Operating line
5055 Recooling temperature
5056 Recooling boiler/HC
5057 Recooling collector
Off
Summer
Always
For recooling the DHW storage tank, there are 2 functions available:
Line no. Operating line
5020 Flow setpoint boost
5021 Transfer boost
5022 Type of charging
With B3
With B3 and B31
With B3, legio B3 and B31
Increase of the flow
temperature setpoint
Increase of transfer boost
Type of charging