Siemens RVA63.242 - Actual Value of Return Temperature (B7); Actual Value 1 (Top) of Buffer Storage Tank Temperature; Actual Value 2 (Bottom) of Buffer Storage Tank Temperature; Actual Value 1 of D.h.w. Temperature (Tbwx)

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Siemens Building Technologies Basic Documentation RVA63.242, RVA53.242 CE1P2373E
Landis & Staefa Division Description of heating engineer settings 26.03.2001
4.7 Actual value of return temperature (B7)
Temperature acquired by sensor B7 in the return is used to ensure maintained boiler
return temperature.
Display Unit
0...140 °C
4.8 Actual value 1 (top) of buffer storage tank
temperature
When including alternative heat sources, buffer storage tank temperature 1 is used as a
control criterion for the release of additional heat sources.
Display Unit
0...140 °C
Buffer storage tank temperature 1 corresponds to the value of the sensor connected to
terminal B4. If there is no valid value at that terminal, the value of terminal B31/H2/B41
will be adopted, if available.
4.9 Actual value 2 (bottom) of buffer storage tank
temperature
Buffer storage tank temperature 2 is used as a criterion for charging with solar energy.
Display Unit
0...140 °C
To be used as buffer storage tank temperature sensor 2, input B31/H2/B41 must be
appropriately defined.
Buffer storage tank temperature 2 corresponds to the value of the sensor connected to
terminal B31/H2/B41. If there is no valid value at that terminal, the value of terminal B4
will be adopted, if available.
4.10 Actual value 1 of d.h.w. temperature (TBWx)
The higher d.h.w. temperature acquired with the d.h.w. temperature sensor will
automatically be displayed on this line.
Display Unit
0...140 °C
If only one d.h.w. temperature sensor is connected, lines 61 and 62 will show the same
value.
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