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Siemens Heating and D.h.w. Controller RVL481 CE1P2541en
Building Technologies 6 Function block "Enduser d.h.w." 20.05.2008
6 Function block "Enduser d.h.w."
This function block contains settings for d.h.w. heating that the enduser himself can
make.
6.1 Operating lines
Line Function, parameter Factory setting (Range) Unit
26 Setpoint of NORMAL d.h.w. temperature 55 (20…100) °C
27 D.h.w. temperature Display function
28 Setpoint of REDUCED d.h.w. temperature 40 (8…80) °C
6.2 Setpoint
The NORMAL and REDUCED d.h.w. temperature setpoints are to be entered in °C.
When using thermostats, it must be made certain that the NORMAL setpoint entered
here agrees with the setpoint of the thermostat or – if 2 thermostats are used – of both
thermostats. If there is a deviation, the charging temperature cannot be correctly calcu-
lated (charging temperature = NORMAL setpoint [operating line 26] + boost of charging
temperature [operating line 127]).
If d.h.w. heating is switched to the electric immersion heater, the setpoint adjustment is
inactive in that case, since the thermostat of the electric immersion heater will ensure
temperature control of the storage tank.
6.3 Actual value
The d.h.w. temperature is displayed in °C as follows, depending on the type of plant:
Plant type Display
x–1, x–2, x–3
B31 or maximum selection of the 2 storage tank sensors B31 and B32
x–4
D.h.w. flow temperature sensor B3
If the measurement is made with one or 2 thermostats, it is not possible to display the
actual value. In that case, the display shows ---.
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