Quick Setback With Room Temperature Sensor - Siemens SIGMAGYR RVP540 Basic Documentation

Benefit
Description
Important

Process
Effect
 Note
326/348
Siemens Building Technologies
HVAC Products
6.6

Quick setback with room temperature sensor

• Making use of the building's thermal storage capacity
Quick setback is dependent on whether or not a room temperature sensor is used. A
differentiation must therefore be made between quick setback with or without room
sensor.
This process has an impact only when a room temperature sensor is used.
Quick setback is started as soon as a change to a lower room temperature setpoint
takes place (e.g. switching times in automatic mode).
Quick setback is terminated as soon as the actual room temperature reaches the level
of the respective room temperature setpoint (TRx = TRw).
°C
20
15
TRw
H
ON
OFF
TRx Actual value of the room temperature
TRw Room temperature setpoint
H Quick setback
When the room temperature setpoint changes, the heating circuit pump will be switched
off until the quick setback process is terminated. This means that the room temperature
falls quicker since the supply of heat from the flow or boiler is cut off.
If no room sensor is connected, quick setback will not be accomplished through this
process. For details, refer to section "Quick setback constant", operating line 702
Basic Documentation RVP540 / RVP550
General control processes
TRx
t
t
.
EXP
CE1P2488en
04.11.2009