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Siemens Building Technologies Basic Documentation RVA47.320 CE1P2379E
HVAC Products Description of the heating engineer settings 15.07.2002
D.h.w. values
4.36 Reduced setpoint of the d.h.w. temperature
• 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 29...35
If the d.h.w. is heated by means of a control thermostat connected to terminal B3,
reduced setpoint operation will not be possible.
1. Press the operating line selection buttons to select operating line 120.
2. Press the + / – buttons to adjust the reduced setpoint of the d.h.w. temperature.
Setting range Unit Factory setting
8...TBWw °C 40
TBWw Nominal setpoint of d.h.w. temperature (setting on line 13)
The temperature setpoint during reduced d.h.w. operation will be changed.
0 10 20 30 40 50 60 70 80 90 100 120 130 140 °C
2379Z10a
13 Setting "Nominal setpoint of d.h.w. temperature”
120 Setting "Reduced setpoint of the d.h.w. temperature”
40
OEM
Setting "Maximum nominal setpoint of the d.h.w. temperature”
D.h.w. heating has 2 different setpoints that can be used:
• Nominal setpoint of the d.h.w. temperature (setting on line 13)
Produces the d.h.w. temperature required during main occupancy times
• Reduced setpoint of the d.h.w. temperature (setting on line 120)
Produces the d.h.w. temperature required outside the main occupancy times
The periods of time during which these d.h.w. temperature setpoints shall be used can
be set on line 121.
4.37 Release of d.h.w. heating
• Release of d.h.w. heating to the nominal setpoint as demanded by the consumers
• Release of d.h.w. heating can be matched to the plant's load curve
Makes it possible to limit the period of time during which d.h.w. heating at the nominal
setpoint is released.
Benefit
Description
Note
Setting
Effect
D.h.w. temperature
setpoints
Benefit
Description
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