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9.7 Outside weather compensation
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
When an optional Intergas outdoor sensor is connected, the
heating flow temperature will be automatically controlled
according to the set heating curve, depending on the outside
temperature at that time.
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.
Taking the graph as an example and using the factory setting A.
With an outside temperature of -9°C the boiler will achieve an
approximate heating flow temperature of 80°C
Adjusting the OTC to example B. will result in an approximate
heating flow temperature of 60°C.
T outside in °C
T flow in °C