OPEraTION
Settings
www.stiebel-eltron.com
WPL 15 IKS | WPL 25 IK |
15
Heating curve diagram
One heating curve each can be adjusted for heating circuit 1 and
heating circuit 2.
At the factory, heating curve 0.6 is set 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.
1,5
2
1,2
1
0,6
0,4
0,2
2,5
3
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
0,8
26
�0
3�
01
�1
30
0�
Y Heating circuit 1, heat pump return temperature [°C]
Heating circuit 2, heat pump flow temperature [°C]
X Outside temperature [°C]
Adjusting the programmed changeover between day mode and
setback mode
The following figure shows a standard heating curve with a slope
of 0.8, relative to a set room temperature 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. As a result
the heating curve shifts in parallel.
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
1
2
26
�0
3�
01
�1
30
1�
Y Return/flow temperature [°C]
X Outside temperature [°C]
1 Day mode
2 Setback mode
Adapting a heating curve
Example:
During spring and autumn, it can occur that the temperature in a
building is too low at an outside temperature between 5 °C and
15 °C, despite open radiator valves, but is OK at outside tempera-
tures of ≤ 0 °C. This problem can be remedied with a parallel shift
and a simultaneous reduction of the heating curve.
Initially, the heating curve was set to 1.0, relative to a set room
temperature of 20 °C. The dotted line indicates the modified hea-
ting curve at 0.83 and a modified set room temperature at 23.2 °C.
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
26
�0
3�
01
�1
30
2�
Y Return/flow temperature [°C]
X Outside temperature [°C]
