5 Use and operation
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
:
Reduction = 10°C
> The calculated required flow temperature (
Pos.10
)
is 27.0°C
> The heating circuit is supplied with 27.0°C.
Abb. 2-33
Adaptation of the 2-point heating curve (in
Hea-
ting mode
)
i
Observe the currently set temperature before
changing 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 adap-
tation of heating curve
-15°C to -
5°C
too cold
Increase temperature
value at
7
too hot
Reduce temperature
value at
7
-5°C to +5°C
too cold
Increase temperature
value at
7
and
8
too hot
Reduce temperature
value at
7
and
8
Current
outside tem-
perature
Perceived
room tem-
perature
Recommended adap-
tation of heating curve
+5°C to
+15°C
too cold
Increase temperature
value at
8
too hot
Reduce temperature
value at
8
3-point heating curve
i
Function must be activated by qualified per-
sonnel.
Depending on the standard of building and insulation,
it is advisable to change over from the 2-point to a 3-
point heating curve. In contrast to the 2-point heating
curve, it is possible to stipulate a third temperature
11
, i.e. the heating curve can include a sharp deflec-
tion or bend.
Abb. 2-34
Adaptation of the 3-point heating curve (in
Hea-
ting mode
)
i
Observe the currently set temperature before
changing the values.
Current
outside tem-
perature
Perceived
room tem-
perature
Recommended adap-
tation of heating curve
-15°C to -
5°C
too cold
Increase temperature
value at
7
too hot
Reduce temperature
value at
7
-5°C to +5°C
too cold
Increase temperature
value at
11
too hot
Reduce temperature
value at
11
+5°C to
+15°C
too cold
Increase temperature
value at
8
too hot
Reduce temperature
value at
8
Operation manual
maximus L
27
