37
Service menu
Sense II – 6 720 818 367 (2015/10)
The heating curve is the decisive basic factor for economic and
convenient operation of the heating system with weather-
compensated control. To calculate the heating curve, the
control system requires you to enter a number of parameters
for the heating system, from which it automatically calculates
the optimum heating curve by means of a mathematical
formula.
This calculation takes into account the adjusted outside
temperature and the room control temperature. The room
control temperature based on the desired room temperature
(set room temperature) and the room influence factor.
This allows the end customer to influence the heating curve
indirectly by modifying the set room temperature.
The most important settings are the design temperature,
maximum flow temperature, room temperature offset (parallel
displacement) and minimum outside temperature.
The heating curve (
Fig. 23 and 24) is mainly determined by
the base point and end point. The base point is located at 25 °C
flow temperature at a room temperature of 21 °C with an
adjusted outside temperature of 20 °C. The end point of the
heating curve must be set according to the design temperature
of the heating system.
The steepness heating curve is determined by the parameters
minimum outside temperature
(
design
temperature
(the flow temperature at minimum outside
temperature) (
The heating curve can be shifted up or down parallel to the
original curve by adjusting the room temperature offset
parameter and/or the set room temperature (
Fig. 23
Setting the Heating curve for underfloor heating system
Left: gradient above design temperature T
AL
and minimum outside temperature T
A,min
Right: parallel displacement via room-temperature offset or via required room temperature
T
A
Outside temperature
T
VL
Flow temperature
[1]
Setting: T
AL
= 45 °C, T
A,min
= –10 °C, limit at T
VL,max
= 48 °C
[2]
Setting: T
AL
= 40 °C, T
A,min
= –10 °C
[3]
Setting: T
AL
= 35 °C, T
A,min
= –20 °C
[4]
Parallel displacement of the base curve [1] by changing the 3 or by increasing the desired room temperature, limit at
T
VL,max
= 48 °C
[5]
Parallel displacement of the base curve [1] by changing offset –3 or by reducing the desired room temperature
The heating curve that is graphically
represented in the display refers to a range
from + 20 °C to the minimum set outside
temperature under
System data
.
0
+10
+20
-10
-20
T
A
20
30
40
50
60
T
VL
T
A
T
VL
C
C
0
+10
+20
-10
-20
20
30
40
50
60
C
6 720 645 407-29. 1O
C
1
2
3
1
4
5
