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LAW 9IMR - LAW 14ITR
9.4 Characteristic curve temperature sensor outdoor unit
9.5 Characteristic curve temperature sensor indoor unit
9.5.1 Sensor characteristic curves
The temperature sensors to be connected to the heat pump man-
ager must correspond to the sensor characteristic curve illus-
trated in Fig. 9.1 on page 16. The only exception is the outdoor
temperature sensor included in the scope of supply of the heat
pump (see Fig. 9.2 on page 16)
Fig. 9.1: Sensor characteristic curve NTC-10
Fig. 9.2: Sensor characteristic curve NTC-2 according to
DIN 44574
Outdoor temperature sensor
9.5.2 Mounting the outdoor 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,
external lighting or heat pumps
Not to be exposed to direct sunlight at any time of year
Sensor lead:
Max. length 40 m; min. core cross-section
0.75 mm²; external diameter of the cable 4-8 mm.
NTC - 10
Air sensor (outdoor unit)
Temperature in °C
-20
-15
-10
-5
-2
0
2
5
10
15
18
20
22
24
k
105
80,2
58,2
44,0
37,4
33,6
30,3
25,9
20,2
15,8
13,8
12,5
11,4
10,5
Temperature in °C
25
26
28
30
32
34
36
38
40
50
60
70
80
90
k
10,0
9,57
8,76
8,04
7,38
6,78
6,24
5,74
5,30
3,59
2,49
1,76
1,27
0,93
NTC - 5
Pipe-mounted sensors (outdoor unit)
Temperature in °C
-20
-15
-10
-5
-2
0
2
5
10
15
18
20
22
24
k
52,7
38,9
29,1
22,0
18,7
16,8
15,1
13,0
10,1
7,92
6,88
6,27
5,72
5,23
Temperature in °C
25
26
28
30
32
34
36
38
40
50
60
70
80
90
k
5,00
4,78
4,38
4,02
3,69
3,39
3,12
2,87
2,65
1,79
1,24
0,88
0,64
0,47
NTC - 200
Hot gas sensor (output compressor)
Temperature in °C
1
5
10
15
20
25
30
35
40
45
50
55
60
65
k
525,00
448,00
326,00
294,33
242,20
200,00
167,57
138,03
133,80
98,00
82,00
64,50
59,00
50,71
Temperature in °C
70
75
80
85
90
95
100
105
110
115
120
130
k
43,73
37,35
32,20
28,16
24,60
21,37
18,50
16,60
14,50
13,30
12,80
10,80
Temperature in °C
-20
-15
-10
-5
0
5
10
NTC-2 in k
14,6
11,4
8,9
7,1
5,6
4,5
3,7
NTC-10 in k
67,7
53,4
42,3
33,9
27,3
22,1
18,0
15
20
25
30
35
40
45
50
55
60
2,9
2,4
2,0
1,7
1,4
1,1
1,0
0,8
0,7
0,6
14,9
12,1
10,0
8,4
7,0
5,9
5,0
4,2
3,6
3,1
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Summary of Contents for LAW 14ITR
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