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D.h.w. control thermostat
(example)
Benefit
Description
Setting
Effect
Boiler boost
Note
Siemens Building Technologies
Landis & Staefa Division
70 °C
UEBW >= 10 °C
60 °C
∆ T > 0 °C
56 °C
SD = 6 °C
50 °C
UEBW
=
boost of the flow temperature setpoint
TBWw
=
nominal setpoint of the d.h.w. temperature
TR
- SD
=
setpoint of the control thermostat minus the switching differential
W
TRw
=
setpoint of control thermostat (point of calibration)
4.55 Boost of the flow temperature setpoint for
d.h.w. heating (UEBW)
Efficient d.h.w. heating.
To allow the d.h.w. to be heated up, the boiler temperature must be higher than the
d.h.w. setpoint.
Setting range
0...30
The setting will raise the boiler temperature setpoint when there is demand for d.h.w.
Increase:
Heating up time will become shorter
More overshoot
Decrease:
Heating up time will become longer
Less overshoot
Using the two settings, the controller generates the boiler temperature setpoint for
d.h.w. heating.
Setting on line 26
Setting on line 126
Total
For d.h.w. control, refer to "switching differential of d.h.w." in index.
Basic Documentation RVA63.242, RVA53.242
Description of heating engineer settings
TBWw + UEBW
TBWw
TRw
TRw -SD
Unit
°C (K)
Reduced setpoint of d.h.w.
temperature
Boost
Boiler temperature setpoint
Factory setting
16
119/218
CE1P2373E
26.03.2001
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