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Siemens Building Technologies
Basic Documentation RVP540 / RVP550
CE1P2488en
HVAC Products
Description of the heating engineer settings
18.10.2002
50 °C
56 °C
60 °C
70 °C
SD = 6 °C
Δ
T > 0 °C
TBWw
23
7
1
Z
3
6
TBWw + UEBW
TRw - SD
TRw
UEBW >= 10 °C
UEBW
= Boost of the temperature setpoint (setting 776)
TBWw
= Nominal setpoint of the d.h.w. temperature (setting on operating line 26)
TR
W
- SD
= Setpoint of the thermostat minus the switching differential
TRw
= Setpoint of the control thermostat (point of calibration)
4.229 Boost of the flow temperature setpoint for
d.h.w.
•
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. This setpoint boost can be set on this operating line.
Setting range
Unit
Factory setting
0...30 K
16
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 operating line 260 / 770
D.h.w temperature setpoint
Setting on operating line 776
Boost
Total Boiler
temperature
setpoint
For d.h.w. control, refer to section "Switching differential of the d.h.w. temperature“
(operating line 751
EXP
).
D.h.w. control thermostat
(example)
Benefit
Description
Setting
Effect
boiler boost
Note
