Appendix
120 Installation instructions geoTHERM 0020051574_04
17
17 Appendix
Sensor characteristics
External heat pump temperature sensors VR 10
Temperature (°C) Resistance (ohms)
-40 87879
-35 63774
-30 46747
-25 34599
-20 25848
-15 19484
-10 14814
-5 11358
08778
56836
10 5363
15 4238
20 3372
25 2700
30 2176
35 1764
40 1439
45 1180
50 973
55 807
60 672
65 562
70 473
75 400
80 339
85 289
90 247
95 212
100 183
105 158
110 137
115 120
120 104
125 92
130 81
135 71
140 63
145 56
150 50
155 44
17.1 Appendix, VR 10 sensor characteristics
Internal heat pump temperature sensors VR 11
Temperature (°C) Resistance (ohms)
-40 327344
-35 237193
-30 173657
-25 128410
-20 95862
-15 72222
-10 54892
-5 42073
0 32510
525316
10 19862
15 15694
20 12486
25 10000
30 8060
35 6535
40 5330
45 4372
50 3605
55 2989
60 2490
65 2084
70 1753
75 1481
80 1256
85 1070
90 916
95 786
100 678
105 586
110 509
115 443
120 387
125 339
130 298
135 263
140 232
145 206
150 183
155 163
17.2 Appendix, VR 11 sensor characteristics