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AirModule –6 720 813 268(2014/10)
49
Fig. 41 Setting of The heating curve for radiators
Left: increase with system temperature T
0
and minimum outside temperature T
1,min
Right: parallel offset with room temperature offset or desired temperature
T
1
Outside temperature
T
0
Flow temperature
[1]
Setting: T
0
= 60 °C, T
1,min
= –20 °C, Limit at T
0,max
= 75 °C
[2]
Setting: T
0
= 75 °C, T
1,min
= –10 °C, Limit at T
0,max
= 75 °C
[3]
Setting: T
0
= 55 °C, T
1,min
= –20 °C, Limit at T
0,max
= 75 °C
[4]
Parallel offset of standard curve [1] by changing the 3 or
by increasing the desired room temperature, limit at T
0,max
=
75 °C
[5]
Parallel offset of standard curve [1] by changing the room
temperature offset -3 or by decreasing the desired room
temperature, limit at T
0,max
= 75 °C
Simple heating curve
The simple heating curve (outside temperature compensated control
with base point) is a simplified representation of the heating curve. This
straight heating curve is described by two points: the base point (the
heating curve starting point) and the end point.
Fig. 42 Setting of simple heating curve
T
A
Outside temperature
T
VL
Flow temperature
[1]
Underfloor heating system or convector
[2]
Radiator
Constant heating below a certain outside temperature
SS-EN 12831 (Heating systems in buildings - Method for calculation of
the design heat load) shows how heating surfaces and heat sources are
dimensioned for a certain output to maintain a comfortable heating. In
setback mode, the heating system can be cooled down more than what
is required for this.
With the
Heat constantly below
parameter it is possible to set an
outside temperature threshold value at which the temperature setback
mode is shut off (applies to adjusted outside temperature). This allows
smaller heating surfaces to be utilised.
Fig. 43 and fig. 44 show the function effects without and with activated
parameters. Selected settings: : ; : 5.
0
+10
+20
-10
-20
20
30
40
50
60
70
80
90
C
C
0
+10
+20
-10
-20
20
30
40
50
60
70
80
90
C
6 720 809 156-30. 2I
C
T
1
T
0
T
1
T
0
1
2
3
1
4
5
Underfloor
heating system,
convector
Radiator
Minimum outside temperature T
A,min
– 10 °C
– 10 °C
Base point
25 °C
25 °C
End point
45 °C
60 °C
Maximum flow temperature T
VL,max
48 °C
75 °C
Room temperature offset
0,0 K
0,0 K
Table 32 Simple heating curve basic settings
0
+10
+20
-10
-20
20
30
40
50
60
C
C
0
+10
+20
-10
-20
20
30
40
50
60
70
80
C
6 720 809 156-31. 2I
C
T
1
T
0
T
1
T
0
1
2
