5 Functions of the heating circuit
Which controller functions are available depends on the selected system code number (Anl).
5.1 Weather-compensated control
When weather-compensated control is used, the flow temperature is adjusted depending on
the outdoor temperature. The heating characteristic in the controller defines the flow temper
-
ature set point as a function of the outdoor temperature (–> Fig. 5). The outdoor temperature
required for weather-compensated control can either be measured at an outdoor sensor or
transmitted from a connected device bus.
Functions
WE Configuration
Outdoor sensor AF1 1 CO1 -> F02 - 1
Receive value from AF2 0 CO7 -> F09 - 1; register no.
50 EB 5575 EN
Functions of the heating circuit
20
30
0.2
2.4
2.62.93.2
2.2
2.0
1.8
1.6
1.4
1.2
1.0
0.8
0.4
0.6
40
50
60
70
80
90
100
110
120
130
t
VL
[
˚
C]
-20 [
˚
C]
t
A
-16-12-8-4048121620
Fig. 5 · Gradient characteristics
t
VL
Flow temperature
t
A
Outdoor temperature
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