10
Bezogen auf +20 °C
Außentemperatur
Bezogen auf 0 °C
Außentemperatur
Bezogen auf -20 °C
Außentemperatur
Tag-Betrieb Heizkreis 1
Bezogen auf +20 °C
Außentemperatur
Bezogen auf 0 °C
Außentemperatur
Bezogen auf -20 °C
Außentemperatur
Absenk-Betrieb
26_03_01_0076
26_03_01_0077
1,5
2
1,2
1
0,6
0,4
0,2
2,53
20
18
16
14
12
10
8
6
4
2
0
-2
-4
-6
-8
-10
-12
-14
-16
-18
-20
100
80
60
40
20
Außentemperatur [°C]
Heizkreis 2 WP-Vorlauftemperatur [°C]
Heizkreis 1 WP-Rücklauftemperatur [°C]
0,8
20
18
16
14
12
10
8
6
4
2
0
-2
-4
-6
-8
-10
-12
-14
-16
-18
-20
70
60
50
40
30
20
Tag-Betrieb
Absenk-Betrieb
Rücklauf- / Vorlauftemperatur [°C]
20
18
16
14
12
10
8
6
4
2
0
-2
-4
-6
-8
-10
-12
-14
-16
-18
-20
Rücklauf- / Vorlauftemperatur [°C]
70
60
50
40
30
20
geänderte Heizkurve
26_03_01_0079
Heating curve diagram
One heating curve respectively can be adjusted for heating circuit 1 and heating circuit 2.
At the factory, heating curve 0.6 is set up for heating circuit 1 and heating curve 0.2 for
heating circuit 2.
These heating curves relate to a set room temperature of 20 °C.
Adjustment of programmed changeover between day/setback mode
The figure shows a standard heating curve with a slope of 0.8, relative to a set room tem-
perature for day mode of 20 °C. The lower curve represents the setback curve. For this, the
set room temperature for setback mode of 15 °C is used, in other words the heating curve is
subjected to a parallel offset.
Matching a heating curve to actual conditions
Example:
During spring and autumn, the return or flow temperature of a heating system is too low at
an outside temperature between 5 and 15 °C, but is OK at outside temperatures of
≤ 0 °C. This problem can be remedied with parallel offset and a simultaneous reduction of the
heating curve.
Prior to this adjustment, heating curve 1.0 was adjusted, relative to a Set room temperature
of 20 °C. The dotted line indicates the modified heating curve at 0.83 and a modified set room
temperature at 23.2 °C.
Heating curves
The HTG CURVE menu item enables you to ad-
just one heating curve each for heating circuit
1 and 2. Selecting the correct heating curve is
therefore vitally important.
Note: Your contractor will have set up a buil-
ding and system-specific optimum heating
curve for every heating circuit. It relates to
the HP return temperature for heating circuit
1 and to the mixer flow temperature for hea-
ting circuit 2.
When adjusting the heating curve on WPMi,
the calculated set return or flow temperature,
which is subject to the outside temperature
and the set room temperature, will be shown
at the top of the display.
As soon as a temperature has been pre-
selected via the fixed temperature parameter
at control level 3, heating circuit 1 will be hid-
den, and the display will show FIXED TEMP
with the relevant temperature.
Heating Circuit 1, HP Return temperature [°C]
Heating Circuit 2, HP Flow temperature [°C]
HP Return temp. / Flow temp. [°C]
Day operation
Set-back operation
Outdoor temperature [°C]
HP Return temp. / Flow temp. [°C]
modified Heating curve
Outdoor temperature [°C]
Outdoor temperature [°C]
Based on 20 °C
Outdoor temp
Based on 0 °C Out-
door temp
Based on - 20 °C
Outdoor temp
Based on 20 °C
Outdoor temp
Based on 0 °C Out-
door temp
Based on - 20 °C
Outdoor temp
Day operation
Heating Circuit 1
Set-Back operation
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