38
Service menu
Sense II – 6 720 818 367 (2015/10)
Fig. 24
Setting the Heating curve for radiators/convectors
Left: gradient above design temperature T
AL
and minimum outside temperature T
A,min
Right: parallel displacement via room temperature offset or required room temperature
T
A
Outside temperature
T
VL
Flow temperature
[1]
Setting: T
AL
= 75 °C, T
A,min
= –10 °C, limit at T
VL,max
= 75 °C
[2]
Setting: T
AL
= 80 °C, T
A,min
= –10 °C, limit at T
VL,max
= 80 °C
[3]
Setting: T
AL
= 70 °C, T
A,min
= –20 °C
[4]
Parallel displacement of the base curve [1] by changing the room temperature 3 or by increasing the desired room
temperature, limit at T
VL,max
= 75 °C
[5]
Parallel displacement of the base curve [1] by changing the room temperature offset –3 or by reducing the desired room
temperature, limit at T
VL,max
= 75 °C
Simple heating curve
The simple heating curve (weather-compensated control with
base point) is a simplification of the curved heating curve as a
straight line. This straight line is described by two points: the
base point (starting point of the heating curve) and the end
point.
Setback types
The setback type determines in the automatic mode how the
heating system works in setback phases.
In the service menu
Central heating settings
>
Heating
circuit 1
...
4
>
Setback type
the following setback types are
available to suit the differing needs of the end user:
•
Reduced mode
: The rooms are kept tempered in setback
mode. This setback type is:
– very comfortable
– recommended for underfloor heating systems.
•
Outside temperature threshold
: If the adjusted outside
temperature falls below the value of a set outside
temperature threshold, the heating system will operate as
in reduced mode. Above this threshold the heating system
is off. This setback type is:
– suitable for buildings with several living spaces where
no user interface is installed
– less comfortable than the reduced mode
– more economical than the reduced mode
– with a broken outside temperature sensor this setback
type has the same behaviour as reduced mode.
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
6 720 645 407-19.2O
C
T
A
T
VL
T
A
T
VL
1
2
3
1
4
5
Underfloor
heating
system
Radiators,
convectors
Minimum outside temperature
T
A,min
– 3 °C
– 3 °C
Base point
25 °C
25 °C
End point
45 °C
75 °C
Maximum flow temperature
T
VL,max
48 °C
75 °C
Room temperature offset
0.0 K
0.0 K
Table 22 Basic settings of the simple heating curve
