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Siemens
Basic Documentation RVP360
CE1P2546en
Building Technologies
9 Function block: Space heating
2017-07-24
9.4.5 Process
HP
T
Rw
T
Rx
T
Rw
T
Rw
T
Rw
HP
Heating program
T
R
Room temperature
t
Time
t
1
Forward shift for early shutdown
t
2
Forward shift to start heating up
t
3
Quick setback
T
Rw
Room temperature setpoint
T
Rw
Setpoint for NORMAL room temperature
T
Rw
Setpoint for REDUCED room temperature
T
Rw
Boost of room temperature setpoint (with boost heating)
T
Rx
Actual value of room temperature
9.4.6 Room model temperature
To determine the room temperature generated by the room model, a distinction
must be made between 2 cases:
The controller is not in quick setback mode:
The room temperature according to the room model is identical to the current
room temperature setpoint
The controller is in quick setback mode:
The room temperature used by the room model is calculated according to the
following formula:
Room model temperature T
RM
[°C] = (T
Rw
– T
AM
) × e
3 × kt
t
+ T
AM