14
User – Set parameters
Explanation of the parameters
P01 Heat slope
Selecting the correct heat slope saves energy because the heat
sources only heat to the point required by the respective outside
temperature.
The heat slope specifies the number of °C by which the flow tem-
perature changes when the outside temperature rises or drops.
▷
Before you select the heat slope, set the room temperature to
the desired value, see page 6 (Set the desired temperature).
▷
Ideally, the heat slope is set when the outside temperature is
below 5 °C. Changes to the heat slope setting must be applied
in small steps and long intervals (at least 5 – 6 hours between
steps). The system must be allowed to adjust to the new value
after each change to the heat slope.
▷
Select the heat slope so that the desired room temperature is
achieved with the thermostat valves fully opened, and doors
and windows closed.
▷
Increase the heat slope if the desired room temperature is not
reached in combination with low outside temperatures.
▷
If the desired room temperature is not reached in combination
with high outside temperatures, increase the desired room tem-
perature.
•
Now change the heat slope.
▷
Typical values:
Floor heating: 0.4 to 0.8
Radiators:
1.0 to 1.5
20
20 16 12 8
4
0
-4 -8 -16 -20
40
60
80
100
0,2
0,4
0,6
0,8
1
1,2
1,5
2
2,5
3
Outside temperature [°C]
Flow temperature [°C]
P02 Room sensor influence
It is possible to adjust the influence of the room sensor on the control
process.
▷
The higher the set value the greater the influence of the room
sensor on the calculated flow temperature.
P02 = OFF purely weather-guided control
P02 = 0: purely weather-guided control
P02 = 20 purely room temperature control
Within the range 0–20 the heatcircuit pump operates up to the next
heating time if there is a heating requirement during the period of
reduced temperature Night (e.g. frost protection of when the tem-
perature drops below the setback temperature). This prevents the
rooms from becoming too cool.
