HEAT CURVE
The flow temperature is usually calculated from the outside temperature and the heating curve
parameters. The heat curve is calculated based on a set room temperature of +20 ℃ and is offset in
parallel for other set room temperatures.
The function allows you to set parameters for the heat curve in two ways:
By means of the slope as is common in many heating control units.
By means of the relationship between the outside temperature (at +10 °C and -20 °C) and
the flow temperature. Here, another reference point is set at +20 °C outside temperature =
+20 °C flow temperature.
In both of these methods, the influence of the outside temperature on the flow temperature is not
linear.
With the slope method, the curvature is defined according to standard conditions.
With the temperature method, the flow temperature required for +10 °C produces a curvature of
the heating curve that can be adjusted to match the thermal output of different heating systems.
Fixed value: The flow is controlled to the fixed values set in the Heat curve sub-menu for Standard
mode and Setback mode. The room influence remains active in Fixed value mode as well. If
there is no outside temperature sensor connected, a value of 0 °C for the outside temperature is set
internally in the controller. For the Standby operating mode to function correctly, the T.outside
av.c. parameter in the Frost protection menu should be set below 0 °C.
With no outside temperature sensor the heating circuit control operates as fixed value control
where the flow temperature in standard mode corresponds to the T.flow -20 °C setting and the flow
temperature in setback mode corresponds to the T.flow +10 °C setting (Heat curve sub-menu).
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