Functions; Reduced Setpoint Of D.h.w. Temperature Tbwr - Siemens SIGMAGYR RVP540 Basic Documentation

Benefit
Description
 Note
Setting
Effect
D.h.w. temperature
setpoints
Siemens Building Technologies
HVAC Products

Functions

4.223 Reduced setpoint of d.h.w. temperature
TBWR
• High d.h.w. temperatures only if required
• Energy savings due to lower temperatures in the remaining time
Reduction of the d.h.w. temperatures outside main occupancy times.
The time switch integrated in the controller automatically switches between main and
secondary occupancy times. For more detailed information, refer to "D.h.w. heating
program", operating lines 20...25.
If the d.h.w. is heated by means of a control thermostat connected to terminal B3, re-
duced setpoint operation will not be possible.
Setting range
8...TBWw
TBWw Nominal setpoint of the d.h.w. temperature (setting on operating line 26)
The temperature setpoint during reduced d.h.w. operation will be changed.
0 10 20 30
26 Setting "Nominal d.h.w. temperature setpoint"
770 Setting "Reduced d.h.w. temperature setpoint"
750 Setting "Maximum nominal setpoint of the d.h.w. temperature"
EXP
D.h.w. heating has 2 different setpoints that can be used:
• Nominal setpoint of the d.h.w. temperature (setting on operating line 26)
Produces the d.h.w. temperature required during the main occupancy times
• Reduced d.h.w. temperature setpoint (setting on operating line 770)
Produces the d.h.w. temperature required outside the main occupancy times
The time of release of d.h.w. charging to the nominal setpoint can be set on operating
line 771.
Basic Documentation RVP540 / RVP550
Description of the heating engineer settings
Unit
°C
40 50 60 70 80
Factory setting
40
90 100 120 130 140
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CE1P2488en
18.10.2002
°C