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7.4 Temperature sensor
The following temperature sensors are already installed or must
be installed additionally:
Outside temperature sensor (R1) supplied (NTC-2)
Return temperature secondary circuit (R2) installed
(NTC-10)
Return temperature primary circuit (R24) installed (NTC-
10)
Flow temperature secondary circuit (R9) installed (NTC-10)
Flow temperature primary circuit (R6) installed (NTC-10)
7.4.1 Sensor characteristic curves
-20
-15
Temperature in °C
NTC-2 in k
14.6
11.4
NTC-10 in k
67.7
53.4
15
20
25
30
35
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. 7.2. The only exception is the outside tempera-
ture sensor included in the scope of supply of the heat pump
(see Fig. 7.3)
70
60
50
40
30
20
10
0
-20
-15
-10
-5
0
5
10
External temperature in [°C]
Fig. 7.2:Sensor characteristic curve NTC-10
20
18
16
14
12
10
8
6
4
2
0
-20
-15
-10
-5
0
5
10
External temperature in [°C]
Fig. 7.3:Sensor characteristic curve NTC-2 according to DIN 44574 Out-
side temperature sensor
EN-6
-10
-5
0
5
8.9
7.1
5.6
4.5
42.3
33.9
27.3
22.1
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
15
20
25
30
35
40
45
50
452237.66.52a · FD 0204
7.4.2 Mounting the outside temperature
sensor
The temperature sensor must be mounted in such a way that all
weather conditions are taken into consideration and the meas-
ured value is not falsified.
On the external wall of a heated room used as living space,
if possible on the north or north-west side of the building
Do not install in a "sheltered position" (e.g. in a wall niche or
under a balcony)
Not in the vicinity of windows, doors, exhaust air vents, ex-
ternal lighting or heat pumps
Not to be exposed to direct sunlight at any time of year
-
Dimensioning parameter sensor lead
10
Conductor material
3.7
Cable-length
18.0
Ambient temperature
60
0.6
Laying system
3.1
External diameter
7.4.3 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.
55
60
Thermal insulation
55
60
SI 130TU
Cu
50 m
35 °C
B2 (DIN VDE 0298-4 /
IEC 60364-5-52)
4-8 mm
Hose clip
Strap-on sensor
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