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EN-115B_f.1420
Heating curve
The purpose of the heat pump controller is to maintain the temperature in the central heating system depending on the outdoor
temperature. When the temperature outside the building is low, the need for heat is greater, whereas if the temperature outdoors
is high, there is no need to maintain a high temperature in the system. The relationship between the outdoor temperature
and the temperature of the central heating system can be represented in the form of a graph, the so-called heating curve.
The figure shows a family of heating curves for a room temperature set point of 22°C. Depending on the characteristics of
the building, the climate zone and the heating system type, a suitable curve needs to be selected.
20,0
30,0
40,0
50,0
60,0
70,0
-20
-10
0
10
20
n=8, p=10
n=8, p=0
n=8, p=-10
If the curve needs to be shifted, change the [curve shift] parameter. The figure shows as an example curve no. 8 with a shift
of -10°C and 10°C.
20,0
30,0
40,0
50,0
60,0
70,0
-20
-10
0
10
20
n=4
n=6
n=8
n=10
n=12
n=14
To [°C]
Tco [°C]
Tips on setting the “heating curve”
Course of heating
Actions concerning the “heating curve”
During cold seasons, it is too cold indoors.
Set the ‘slope’ to the next higher value.
During cold seasons, the rooms are too warm.
Set the ‘slope’ to the next lower value.
During transitional and cold seasons, it is too cold indoors.
Set the ‘level’ to a higher value.
During transitional and cold seasons, the rooms are too warm.
Set the ‘level’ to a lower value.
It is too cool indoors in transitional seasons, yet it is warm enough in cold
seasons.
Set the ‘slope’ to the next lower value and the ‘level’ to
a higher value.
It is too warm indoors in transitional seasons, yet warm enough in cold
seasons.
Set the ‘slope’ to the next higher value and the ‘level’ to
a lower value.
Summary of Contents for HPMI2 - 12
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