Room Influence - Siemens RVP360 Basic Documentation

Siemens
Building Technologies
9.5.2

Room influence

The room temperature is included in the control process. Required for that purpose
is a room sensor or room unit.
A gain factor for the room temperature's influence on flow temperature control can
be adjusted. This gain factor indicates to what extent deviations of the current room
temperature from the room temperature setpoint have an impact on flow tempera-
ture control:
0 = no impact of room temperature deviation on the generation of setpoint
20 = maximum impact of room temperature deviation on the generation of setpoint
The room temperature setpoint change T
ing formula:
VF
T [K] = ————— * ( T
Rw
2
T
Rw
T
Rw
The flow temperature setpoint change T
temperature setpoint is calculated as follows:
T [K] = T ( 1 + s )
Vw Rw *
s Heating curve slope
T
Room temperature setpoint
Rw
T
Room temperature setpoint change
Rw
T Reduction of room temperature setpoint
Rw
+ T
Increase of room temperature setpoint
Rw
T Actual value of room temperature
Rx
T Deviation of room temperature (T
R
T
Change of flow temperature setpoint
Vw
VF Gain factor
Basic Documentation RVP360
9 Function block: Space heating
is calculated according to the follow-
Rw
- T )
Rw Rx
T
R
resulting from the change of room
Vw
- T )
Rw Rx
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CE1P2546en
2017-07-24