
P32-EN – Subject to technical changes 04.11
38
“Functions” Menu Overview
1 2 3 4 5 6 7 8 9 10 11 12 13 14
HEAT CURVE
BACK
T.Pre..MIN:
20°C
T.Pre.+10°C:
35°C
T.Pre.-20
°C:
80°C
T.Pre..MAX:
70°C
At the pointer position
change the temperature
limits using the rotary wheel
Setting the heating curve in “Temp.” mode.
The “Temp.” mode is used in the same manner as the
heating curves. The heating curves are selected using
a target flow (“pre-run”) temperature of 20°C and
outdoor temperature of 20°C and adjustable target
flow (“pre-run”) temperature of -20°C (
figure on right
).
The curvature can also be influenced by the point
adjustable target flow temperature for an outdoor
temperature of +10°C (
figure in center)
.
The target flow temperature derived from the heating
curve are limited by the two values “T.Pre.Max” and
“T.pre.MIN”.
You can change the slope of the heating curve by
increasing the limit “T.Pre.+10°C” or decreasing the
limit “T.Pre.-20°C”.
Recommended values for the slope of the heating
curve are provided in the
table below
.
1 2 3 4 5 6 7 8 9 10 11 12 13 14
HEAT CURVE
BACK
on Start
0%
T.Pre.
M
IN:
20
°C
Slope:
0.80
T.Pre.
M
AX:
70
°C
At the pointer position
enter the maximum flow
(pre-run) temperature.
In the heating circuit menu, turn the rotary wheel until
“T.Pre.MAX: 70°C” is selected (see
figure on right
).
Enter the required maximum flow temperature by
pressing and turning the rotary wheel and then
pressing it again. To enter the minimum flow (“pre-
run”) temperature, repeat the steps for “T.Pre.MIN:
20°C”. Use the “BACK” button to return to the func-
tion menu.
Setting the flow temperature limits
“T.Pre.MAX” and “T.Pre.MIN” limit the flow temperature:
The heating pump switches off when the calculated flow
(“pre-run”) temperature is lower than “T.Pre.MIN”. If the
calculated flow temperature is higher than “T.Pre.MAX”,
“T.Pre.MAX” is set as the flow temperature. This
ensures that overheating does not occur (which is
required for underfloor heating). Of course, thermostatic
flow temperature limiters must be installed where they
are prescribed.
Building
T.Pre.+10°C
T.Pre.-20°C
Old building
50
80
New construction
40
64
Underfloor heating
37
52
Low energy house
35
50
Recommended values for the slope of the
heating curve (“Temp.” mode)
[°C]
[°C]
20
15
10
5
0
5
10
15
20
20
40
60
80
100
20°C
10°C
Heating curves in “Temp.” mode for a target room tem-
perature of 20°C (parallel shifted for other temperatures)
Example
: The target room temperature is set to 20°C,
the slope to (-20°C/60°C) and the curvature to
(+10°C/38°C). The flow temperature is then adjusted to
approx. 30°C for an outdoor temperature of 15°C.
For an outdoor temperature of 0°C, the flow temperature
is adjusted to approx. 45°C.
Curvature
Slope
Outdoor temperature
Target room temperature
Flow target temperature