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7.3.2 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
2.9
2.4
2.0
1.7
14.9
12.1
10.0
8.4
The temperature sensors to be connected to the heat pump
manager must correspond to the sensor characteristic curve il-
lustrated in Fig. 7.1 on page 6. The only exception is the exter-
nal temperature sensor included in the scope of supply of the
heat pump (see Fig. 7.2 on page 6)
70
60
50
40
30
20
10
0
-20 -15 -10 -5
0
5
10
Fig. 7.1:Sensor characteristic curve NTC-10
20
18
16
14
12
10
8
6
4
2
0
-20 -15 -10 -5
0
5
10
Fig. 7.2:Sensor characteristic curve, NTC-2 according to DIN 44574 Ex-
ternal temperature sensor
EN-6
-10
-5
0
5
8.9
7.1
5.6
4.5
42.3
33.9
27.3
22.1
35
40
45
50
55
1.4
1.1
1.0
0.8
0.7
7.0
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
452162.66.25-EN · FD 0402
7.3.3 Mounting the external temperature
sensor
10
The temperature sensor must be mounted in such a way that all
3.7
weather conditions are taken into consideration and the meas-
18.0
ured value is not falsified.
60
Mount on the external wall on the north or north-west side
0.6
where possible
3.1
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
Conductor material
Cable-length
Ambient temperature
Laying system
External diameter
7.3.4 Installing the strap-on sensor
It is only necessary to mount the strap-on sensors if they are in-
60
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
HWK 332HC
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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