Operation Manual

82/180
Siemens Schweiz AG User Manual CE1U2354en
HVAC Products Heating circuits 23. August 2007
The flow temperature is controlled depending on the room temperature setpoint, the
current room temperature and the progression of the room temperature. For example, a
slight increase of the room temperature causes an immediate drop of the following
temperature.
To activate the function, following must be considered:
•
A room sensor must be connected.
•
“Room influence“ must be set to 100 %.
•
There should be no thermostatic radiator valves in the reference room (mounting
location of the room sensor). (if such valves are present, they must be set to their
fully open position).
Room temp limitation
Line no. Operating line
HC1 HC2 HCP
760 1060 1360 Room temp limitation
With the "Room temperature limitation" function, the heating circuit pump can be
disabled if the room temperature exceeds the current room temperature setpoint by
more than the preset differential.
The heating circuit pump is re-enabled when the room temperature returns to a level
below the current room temperature setpoint.
While the "Room temperature limitation" function is active, no demand signals are sent
to the heat source.
Room temperature limitation does not work in the case of pure weather compensation.
OFF
ON
P
°C
TRx
TRw+SDR
2371D02
TRw
t
TRx Actual value room temp
TRw Room temperature setpoint
SDR Room switching differential
P Pump
t Time
Boost heating
Line no. Operating line
HC1 HC2 HCP
770 1070 1370 Boost heating
Boost heating is used to reach the new setpoint more quickly when switching from the
Reduced setpoint to the Comfort setpoint, thus reducing the heat-up time. During boost
heating, the room temperature setpoint is raised by the value set here. A higher setting
leads to shorter heat- up times, a lower setting to longer heat-times.
• Boost heating is possible with or without room sensor.
Room compensation only