The factory settings for the heat curve before adjustment is "40". This setting is suitable for many heating sys-
tems with radiators, but generally unsuitable for systems with floor heating. For systems with underfloor heat-
ing a standard heat curve setting is "30".
Combination systems with both underfloor heating and radiators may need different heat curves. This can be
obtained with, for example, an additional distribution circuit if that has been prepared by the installer. See the
Distribution Circuit chapter.
The heat curve provides very good adjustment possibilities and may also be further customized to individual
needs at seven different outdoor temperatures.
If a room sensor is installed (accessory), this will enhance the control of how warm the water supplied to the
heating system should be based on the measured indoor temperature.
To ensure that the supply line temperature is not too warm (or cold) for the heating system, max and min sup-
ply line temperature boundaries should be set. See chapter Heating Settings (Supply line min and max) in this
appendix.
The simplified working principle for the heat curve is as follows:
1 Temperature (°C)
2 Maximum setpoint value
3 Outdoor temperature (°C)
4 0°C
5 Set value (standard 40°C).
In the event of outdoor temperatures below 0°C, a higher setpoint value is calculated and in the event of out-
door temperatures greater than 0°C, a lower setpoint value is calculated.
Moving the heat curve as one unit
When the curve indicator
is lit, the curve is moved as one unit and the slope of the curve is adjusted.
The simplified working principle for this is as follows:
User Guide
Mega
VUJSC302 Thermia Värmepumpar
28
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