6 Heating circuit
2-point heating curve
Abb. 2-28
1 Maximum heating circuit flow temperature
[1]
2 Calculated required flow temperature
3 Reduction (the value by which the reduced
temperature is lower than the heating tem-
perature)
4 Heating curve for heating mode (shown in red)
5 Heating curve for reduced mode (blue)
6 Minimum heating circuit flow temperature
[1]
7 Flow temperature at outside temperature -
15°C
8 Flow temperature at outside temperature
+15°C
!
1)
ATTENTION
- This temperature is system-
specific and must be agreed with the heating
engineer. If there is a risk of the boiler over-
heating, the hot water is discharged to the hea-
ting circuits at the
Maximum heating circuit
flow temperature
1
. Only to be set by qualified
personnel.
The desired heating circuit required flow temperature
in heating mode is set for an outside temperature of -
15°C
7
and +15°C
8
. Between these outside tem-
peratures, the required flow temperature is calculated
from the characteristics of the heating curve (inter-
polated).
Example for calculation of required flow tem-
perature
(see the following illustration):
Flow temperature at outside temperature of -15°C =
45°C
Flow temperature at outside temperature of +15°C =
22°C
Current outside temperature = -5°C
In the heating circuit operating mode
Heating mode,
the following applies:
> The calculated required flow temperature (
Pos.9
) is
37.4°C
> The heating circuit is supplied with 37.4°C.
In the heating circuit operating mode
Reduced mode,
the following applies:
Reduction = 10°C
> The calculated required flow temperature (
Pos.10
)
is 27.0°C
> The heating circuit is supplied with 27.0°C.
Abb. 2-29
Adjustment of the 2-point heating curve (in
hea-
ting mode
)
i
Note the currently set temperatures before
you change the values.
A change in heating curve cannot be felt immediately.
Instead, this depends largely on the kind of heat dis-
tribution system (e.g. underfloor heating) and the buil-
ding standard (brick, lightweight construction etc.). It
is advisable to adjust the heating curve in small incre-
ments (+/- 2°C) with corresponding pauses (1 to 2
days). Depending on the current outside tem-
perature, different adjustments need to be made.
Current
outside tem-
perature
Perceived
room tem-
perature
Recommended adjust-
ment of heating curve
-15°C to -
5°C
too cold
Increase temperature
value at
7
too hot
Reduce temperature
value at
7
22
Operation manual
pelletelegance
