54
8.7 Weather-dependent control
When an outdoor sensor is connected, the flow temperature
will be automatically controlled according to the set heating
line, depending on the outside temperature.
The weather-dependent control functions solely with an
on/o room thermostat. When using an OpenTherm room
thermostat, the outside temperature will be relayed, but the
heating line of the central heating boiler will not be active.
Heating line
X: T outside in °C
Y: T flow in °C
A. Factory setting
(T
max
CH = 80°C, T
min
CH = 25°C, T
min
out = -9°C, T
max
out = 25°C)
B. Example
(T
max
CH = 60°C, T
min
CH = 25°C, T
min
out = -9°C, T
max
out = 25°C)
-30 -20 -10 0
0
10
20
30
40
50
60
70
80
90
10 20 30
AA
B
Tmax.
Tmin.
X
Y
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