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Siemens
Basic Documentation RVP360
CE1P2546en
Building Technologies
6 Function block: End-user d.h.w.
2017-07-24
6
Function block: End-user d.h.w.
This function block provides settings for the d.h.w. temperature that the end-user
himself can make.
6.1 Operating
lines
Line Function, parameter
Factory setting
(range)
Unit
Heating
circuit
26
NORMAL setpoint for d.h.w. temperature
55 (20...100)
°C
–
27
Display of current d.h.w. temperature
Display function
°C
–
28
REDUCED setpoint for d.h.w. temperature
40 (8...80)
°C
–
6.2 Setpoints
The 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 calculated
(charging temperature = setpoint [operating line 26] + boost of charging tempera-
ture [operating line 127]).
If d.h.w. heating is switched to the electric immersion heater, setpoint adjustment
becomes inactive, since the thermostat of the electric immersion heater ensures
temperature control of the storage tank.
The d.h.w. temperature setpoints for NORMAL and REDUCED are used when the
d.h.w. heating mode is set to ON.
With OFF and during holiday periods, the frost protection setpoint applies.
6.2.1 NORMAL d.h.w. temperature setpoint
As soon as d.h.w. charging is released, the controller tries to heat up the storage
tank until the "NORMAL setpoint of d.h.w. temperature" is reached (operating line
26).
Release of d.h.w. charging always takes place according to the settings made on
operating line 123 (always according to the heating program or scheduler program
2).
6.2.2 REDUCED d.h.w. temperature setpoint
Outside the release times for charging to the NORMAL setpoint of the d.h.w. tem-
perature, the d.h.w. is heated up to the REDUCED setpoint (operating line 28).
When using thermstats, the REDUCED setpoint of the d.h.w. temperature is deac-
tivated since the thermostat determines the switch on/off temperature.
Note