Dhw Storage Tank - Siemens Albatros2 RVA78.690 User Manual

Minimum buffer transfer
temperature
Transfer boost
Switching differential
Charging time limitation
Siemens
Building Technologies
6.8.7 Transfer
Line no. Operating line
4860 Min buffer transfer temp
The buffer storage tank can charge DHW storage tank.
The setting is required if the collectors / solid fuel boiler is not connected to the
DHW storage tank, or if the connected collectors / solid fuel boiler does not supply
sufficient energy.
The transfer occurs if the transfer temperature set here and the required transfer
boost (5021) is reached.
6.9

DHW storage tank

6.9.1 Charging control
Line no. Operating line
5021 Transfer 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.
6.9.2 Switching differential
Line no. Operating line
5024 Switching diff
If the DHW temperature is lower than the current setpoint minus the switching
differential set here, DHW charging is started.
DHW charging is completed when the temperature reaches the current setpoint.
When DHW heating is released for the first time in a 24-hour period, forced
charging is initiated. DHW charging is also started when the DHW temperature lies
within the switching differential, provided it does not lie less than K below the
setpoint.
6.9.3 Charging time limitation
Line no. Operating line
5030 Charging time limitation
The buffer storage tank may receive no or too little energy during DHW charging –
regardless of the hydraulic circuit. For this reason, it is often practical to set a time
limit to DHW charging.
Solar compact controller
The settings in detail
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CE1U2396en
18.08.2010