Quick Setback - Siemens Albatros RVS46 Series User Manual

Quick setback

Example
72/138
Siemens
Building Technologies
°C
TR
w
20
15
TRw The room temperature setpoint
TRx Actual value of the room temperature
DTRSA Increase of room temperature setpoint
Line no.
HC1 HC2 HCP
780 1080 1380
During quick setback, the heating circuit pump is deactivated and, in the case of mixing
valve circuits, the mixing valve is fully closed.
· Function with room sensor:
When using the room sensor, the function keeps the heating switched off until the room
temperature has dropped to the level of the Reduced setpoint or the frost level.
When the room temperature has fallen to the Reduced level or the frost level, the
heating circuit pump will be activated and the mixing valve will be released.
· Function without room sensor:
Quick setback switches the heating off for a certain period of time, depending on the
outside temperature and the building time constant.
Duration of quick setback when Comfort setpoint minus Reduced setpoint = 2°C
(e.g. Comfort setpoint = 20°C and Reduced setpoint =18°C)
Outside air
temperature
0
mixed:
15 °C 0
10 °C 0
5 °C 0
0 °C 0
-5 °C 0
-10 °C 0
-15 °C 0
-20 °C 0
· Quick setback is possible with or without a room sensor
User Manual
Heating circuits
DTRSA
TR
x
Operating line
Quick setback
Off
Down to reduced setpoint
Down to frost prot setpoint
Building time constante:
2 5
3.1 7.7 15.3
1.3 3.3 6.7
0.9 2.1 4.3
0.6 1.6 3.2
0.5 1.3 2.5
0.4 1.0 2.1
0.4 0.9 1.8
0.3 0.8 1.5
Duration of quick setback in hours
t
10 15 20
23 30.6
10 13.4
6.4 8.6
4.7 6.3
3.8 5.0
3.1 4.1
2.6 3.5
2.3 3.1
CE1U2353en
50
76.6
33.5
21.5
15.8
12.5
10.3
8.8
7.7
2014-07-30