Outside Temperature Sensor - Viessmann VITOLIGNO 300-P Service Instructions Manual

Repairs
(cont.)
Checking the sensor
760
740
720
700
680
660
640
620
600
580
560
540
0 20 40 60 80 100 120 140
Temperature in °C
Specification
Sensor type
IP rating
Permiss. ambient
temperature
■ During operation
■ During storage
and transport

Outside temperature sensor

Connection
See chapter "Connection and wiring dia-
gram" from page 133.
Boiler water tem-
perature sensor
Pt500
IP 32
0 to + 130 °C
−20 to + 70 °C
1. Pull corresponding plug.
2. Check the sensor resistance at the
plug.
3. Compare the measurement with the
actual temperature displayed (for
scanning, see chapter "Tempera-
tures, boiler coding card and brief
scans").
In the case of severe deviation, check
the installation and replace the sen-
sor if required.
Cylinder and buf-
fer temperature
sensors
Pt500
IP 32
0 to + 90 °C
−20 to + 70 °C
Troubleshooting
Collector tempera-
ture sensor
Pt500
IP 53
0 to + 200 °C
−20 to + 70 °C
97