Table of Contents
Advertisement
Quick setback
Function with room
sensor
Function without room
sensor
Example
Optimum start/stop
control
Optimum start control
max
Optimum stop control
max
Siemens
Building Technologies
Line no.
HC1
HC2
780
1080
1380
During quick setback, the heating circuit pump is deactivated and, in the case of
mixing circuits, the mixing valve is fully closed.
When using a room temperature 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.
Quick setback switches the heating and building time constant off for a certain
period dependent on the outside temperature.
Duration of quick setback when Comfort setpoint minus Reduced setpoint = 2 °C
(e.g. Comfort setpoint = 20 °C and Reduced setpoint =18 °C)
Building time constant [h]
Composite outside
0
Duration of quick setback [h]
temperature
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 room temperature sensor
Line no.
HC1
HC2
790
1090
1390
791
1091
1391
794
1094
1394
Optimum start control optimizes the change from one temperature level to the other
in a way that the Comfort setpoint is achieved at the switching times.
The setting "Optimum start control max" limits the period of precontrol.
Optimum stop control advances changeover of the temperature level to achieve
Comfort setpoint -1/4 °C at the switching times.
The setting "Optimum stop control max" limits the period of precontrol.
User manual RVS43.345
The settings in detail
Operating line
HC3
Quick setback
Off ¦ To Reduced setpoint ¦ To frost Prot setpoint
2
5
3.1
7.7
1.3
3.3
0.9
2.1
0.6
1.6
0.5
1.3
0.4
1.0
0.4
0.9
0.3
0.8
Operating line
HC3
Optimum start control max
Optimum stop control max
Heat up gradient
10
15
20
15.3
23
30.6
6.7
10
13.4
4.3
6.4
8.6
3.2
4.7
6.3
2.5
3.8
5.0
2.1
3.1
4.1
1.8
2.6
3.5
1.5
2.3
3.1
CE1U2354en_021
50
76.6
33.5
21.5
15.8
12.5
10.3
8.8
7.7
61 / 239
2013-09-02
Hide quick links:
Advertisement
Table of Contents
