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Siemens Building Technologies Basic Documentation RVD110, RVD130 CE1P2381E
HVAC Products 11 Function block Space heating 27.05.2004
2381B01
H
T
Vw
s
s
T
AM
T
Rw
/ /
Generation of setpoint with weather-compensated control without room unit
* Multiplier Operating line 5 = setting of heating curve slope
s Slope of heating curve Operating line 69 = setting of heat gains
T
Rw
Room temperature setpoint Operating line 71 = setting of parallel displacement of heating curve
T
Vw
Flow temperature setpoint
T
AM
Composite outside temperature
H Heating curve
11.4.3 Setpoint of room temperature-compensated control
The setpoint is generated based on the deviation of the actual room temperature from
the setpoint. In addition, the heating curve with a fixed outside temperature of 0 °C is
taken into consideration.
2381B02
E
H
T
Vw
T
Rw
/ /
+10 K
-10 K
I
+50 K
-50 K
L
T
Rx
1
/
2
1
s
s
0 °C
s
Generation of setpoint with room temperature-compensated control
* Multiplier Operating line 5 = setting of heating curve slope
E Room authority Operating line 69 = setting of heat gains
H Heating curve Operating line 70 = setting of room temperature influence (gain factor)
I Integrator with limitation Operating line 71 = setting of parallel displacement of heating curve
L Limiter
S Heating curve slope
T
Rw
Room temperature setpoint
T
Rx
Room temperature
T
Vw
Flow temperature setpoint
11.4.4 Setpoint of weather-compensated control with room
temperature influence
Here, in addition to the outside temperature and the room temperature setpoint, the
heating curve and the room temperature influence act on the flow temperature setpoint.
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