Samson TROVIS 5571 - 5 Functions of the Heating Circuit; Weather-Compensated Control

5 Functions of the heating circuit
The following function descriptions are based on systems with heating circuits on the secondary
side. Refer to section 2.1.
5.1 Weather-compensated control
When weather-compensated control is used, the flow temperature is controlled according to the
outdoor temperature. The heating characteristic in the controller defines the flow temperature
set point as a function of the outdoor temperature (–> Fig. 1).
28 EB 5571-2 EN
Functions of the heating circuit
130
120
110
100
90
80
70
60
50
40
30
20
20 16 12 8 4 0 -4 -8 -12 -16 -20
2,4
3,2 2,9 2,6
2,2
2,0
1,8
1,6
1,4
1,2
1,0
0,8
0,4
0,2
[
˚
C]
[
˚
C] t
VL
t
A
Fig. 1 Gradient characteristics
t
VL
Flow temperature
t
A
Outdoor temperature