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3.2 Temperature sensor
Depending on the heat pump type used, the following temper-
ature sensors are already installed or must be additionally
mounted:
NTC-2 sensor:
Outside temperature sensor (R1)
NTC-10 sensor:
1st, 2nd and 3rd heating circuit temperature sensors (R35,
R5 and R21)
Demand sensor (R2.2)
Domestic hot water temperature sensor (R3)
Renewable cylinder temperature sensor (R13)
3.2.1 Sensor characteristic curves
Temperature in °C
-20
-15
NTC-2 in k
14.6 11.4
NTC-10 in k
67.7 53.4 42.3 33.9 27.3 22.1 18.0
15
20
25
30
2.9
2.4
2.0
1.7
1.4
14.9 12.1 10.0
8.4
7.0
The temperature sensors to be connected to the heat pump
manager must correspond to the sensor characteristic curve il-
lustrated in Fig. 3.3 on page 4. The only exception is the outside
temperature sensor included in the scope of supply of the heat
pump (see Fig. 3.4 on page 4)
70
60
50
40
30
20
10
0
-20 -15 -10 -5
0
5
10
Fig. 3.3:Sensor characteristic curve NTC-10 for connecting to the heating
controller
20
18
16
14
12
10
8
6
4
2
0
-20 -15 -10 -5
0
5
10
Fig. 3.4:Sensor characteristic curve NTC-2 according to DIN 44574
4
-10
-5
0
5
8.9
7.1
5.6
4.5
35
40
45
50
55
1.1
1.0
0.8
0.7
5.9
5.0
4.2
3.6
15
20
25
30
35
40
45
50 55
Temperature [°C]
15
20
25
30
35
40
45
50 55
Temperature °C
452117.66.36-EN · FD 0301
3.2.2 Installing the strap-on sensor
It is only necessary to mount the strap-on sensors if they are in-
cluded in the scope of supply of the heat pump but have not yet
been installed.
The strap-on sensors can be fitted as pipe-mounted sensors or
installed in the immersion sleeve of the compact manifold.
Mounting as a pipe-mounted sensor
Remove paint, rust and scale from heating pipe
Coat the cleaned surface with heat transfer compound (ap-
ply sparingly)
Attach the sensor with a hose clip (tighten firmly, as loose
sensors can cause malfunctions) and thermally insulate
10
3.7
Thermal insulation
60
0.6
3.1
60
60
WPM Touch +2 Box
Hose clip
Strap-on sensor
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