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Benefits
Note
Description
Setting
Effect
D.h.w. temperature
setpoints
Switching times
112/218
Siemens Building Technologies
Landis & Staefa Division
D.h.w.
4.49 Reduced setpoint of d.h.w. temperature
(TBWR)
High d.h.w. temperature level only if required.
Energy savings due to lower temperatures in the remaining time.
If the d.h.w. is heated by means of a control thermostat connected to terminal B3,
reduced setpoint operation will not be possible.
Reduction of d.h.w. temperatures outside main occupancy times. The time switch
integrated in the controller auotmatically switches between main and secondary
occupancy times. Also refer to "d.h.w. program" in Index.
Setting range
8...TBWw
TBWw Nominal setpoint of the d.h.w. temperature (setting on line 26)
The temperature setpoint during reduced d.h.w. operation will be changed.
0
10
20
30
26
Setting "Nominal setpoint of the d.h.w. temperature"
120
Setting "Reduced setpoint of the d.h.w. temperature"
50
Setting "Maximum nominal setpoint of d.h.w. temperature"
OEM
D.h.w. heating has 2 different setpoints that can be used:
• Nominal setpoint of d.h.w. temperature: It ensures the d.h.w. temperature required
during main occupancy times
• Reduced setpoint of d.h.w. temperature: It ensures the d.h.w. temperature required
during secondary occupancy times
The periods of time during which these d.h.w. temperature setpoints shall be used can
be set in the d.h.w. program.
Basic Documentation RVA63.242, RVA53.242
Description of heating engineer settings
Unit
°C
40
50
60
70
Factory setting
40
80
90
100
°C
CE1P2373E
26.03.2001
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