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7.4 Temperature sensor
The following temperature sensors are already installed or must
be installed additionally:
External temperature sensor (R1) supplied (NTC-2)
Return temperature heating circuit (R2) installed (NTC-10)
Return temperature primary circuit (R24) installed (NTC-
10)
Flow temperature heating circuit (R9) installed (NTC-10)
Flow temperature primary circuit (R6) installed) (NTC-10)
7.4.1 Sensor characteristic curves
Temperature in °C
-20
-15
NTC-2 in k
14.6
11.4
NTC-10 in k
67.7
53.4
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 on pag. 6. The only exception is the external
temperature sensor included in the scope of supply of the heat
pump (see Fig.7.3 on pag. 6)
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, standardised NTC-2 according to
DIN 44574 External 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
55
15
20
25
30
35
40
45
50
55
452235.66.22a · FD 0106
7.4.2 Mounting the external 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.
Mount on the external wall on the north or north-west side
where possible
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
10
-
Dimensioning parameter sensor lead
3.7
Conductor material
18.0
Cable-length
60
Ambient temperature
0.6
3.1
Laying system
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
(apply sparingly).
Attach the sensor with a hose clip (tighten firmly, as loose
sensors can cause malfunctions) and thermally insulate.
60
Thermal insulation
60
SI 6TU - SI 18TU
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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