D.h.w. Values; Nominal D.h.w. Temperature Setpoint - Siemens RVA47.320 User Manual

Cascade controller for modulating gas-fired boilers
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Benefit
Setting
Effect
D.h.w. temperature
setpoints
D.h.w. charging
Note
42/166
Siemens Building Technologies
HVAC Products

D.h.w. values

3.11

Nominal d.h.w. temperature setpoint

D.h.w. heating only if there is a demand for it
Possibility of using 2 different d.h.w. temperature setpoints
1. Press the operating line selection buttons to select line 13.
2. Press the + / – buttons to adjust the nominal setpoint of the d.h.w. temperature.
Setting range
TBWR...TBWmax
TBWR
Reduced setpoint of d.h.w. temperature (setting on operating line 120)
TBWmax
Maximum nominal setpoint of d.h.w. temperature (setting on line 40
0
10
20
30
The temperature setpoint during normal d.h.w. operation will be changed.
13
Setting "Nominal setpoint of the d.h.w. temperature"
120
Setting "Reduced setpoint of the d.h.w. temperature"
40
Setting "Maximum nominal setpoint of the d.h.w. temperature"
OEM
D.h.w. heating has 2 different setpoints that can be used:
• Nominal d.h.w. temperature setpoint: It ensures the d.h.w. temperature required
during main occupancy times
• Reduced d.h.w. temperature setpoint (setting on operating line 120): it ensures the
d.h.w. temperature required during the main occupancy times.
The criteria required for releasing d.h.w. heating are defined by the settings made on
lines 121 and 123 and 124.
In the event of a sensor with a short-circuit (display "- - -" in input test, test step 1) the
d.h.w. will not be heated (protection against scalding).
Basic Documentation RVA47.320
Description of the enduser settings
Unit
°C
40
50
60
70
80
Factory setting
55
)
OEM
90
100
120
130
140
CE1P2379E
15.07.2002
°C

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