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Para-
Parameter name
meter
P6.2
SWITCH-OFF DIFFE-
RENCE FOR COLLEC-
TORS OR SOILD FUEL
BOILER
P6.3
MIN. TEMPERATURE
OF COLLECTORS OR
SOLID FUEL BOILER
hEATING CURVE
With adjustion of heating curve the controller is adapted to the building. Proper heating
curve adjustion is very important for optimal heating control. Heating curve steepness
indicates, what temperature is required for the heating bodies by a determined outdoor
temperature. The steepness value depends mainly on the heating system type (floor, wall,
radiator, convector heating) and insulation of the building.
Determining the heating curve steepness
If you have enough data, you can determine the heating curve steepness with a calcula-
tion, otherwise from experience, based on the evaluation of heating system dimensioning
and building insulation.
The heating curve steepness is set correct, if the room temperature remains stable, even
by large outdoor temperature changes.
While the outdoor temperature is above + 5 °C, you can adjust the room temperature by
changing the day or night temperature or with the parallel shift of the heating curve (param-
eters P2.2 and P3.2).
If the object is underheated by low outdoor temperatures, the heat curve steepness needs
to be increased.
If the object is overheated by low outdoor temperatures, the heat curve steepness needs to
be decreased.
The maximum steepness increase/decrease should not be greater than 0.1 to 0.2 units per
one observation. At least 24 hours must pass between two observations.
Preferred settings of the heating curve steepness:
heating system:
floor
wall
radiator
With adjusting the heat curve steepness, the controller is tuned with the
building. For optimal controller operation, the right setting of the heat curve
steepness is very important.
Parameter description
Setting of difference between solar collectors or solid fuel
boiler temperature and storage tank or heat accumulator
temperature by which the circulation pump shall switch-off.
Setting of min. solar collector or solid fuel boiler temperature
to activate the circulation pump.
Setting range:
0,2 - 0,8
0,4 - 1,0
0,8 - 1,4
39
Setting
Default
range
setting
1 ÷ 25 °C
4
10 ÷ 60 °C
35
Service setting manual
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