Viessmann VITOCAL 222-S Installation And Service Instructions Manual page 104

Troubleshooting
Repairs
(cont.)
Temperature sensors in the internal unit (with marking)
Viessmann NTC 10 kΩ (blue marking)
Outside temperature sensor
200
100
80
60
40
20
10
8
6
-20 -10 0
Temperature in °C
Further sensors
20
10
8
6
4
2
1
0.8
0.6
0.4
10 30 50 70 90 110
Temperature in °C
104
10 20 30
Viessmann Pt 500A (green marking)
860
780
700
620
540
460
-20 20 60
Temperature in °C
100 140 180