Flue Gas Temperature Sensor - Viessmann Vitocrossal 200 CM2 500 Service Instructions Manual

Burner Service

Flue Gas Temperature Sensor

48
Vitocrossal 200, CM2 400, 500 and 620 Service
For Boilers Equipped with Individual Temperature Sensors
Note: The flue gas temperature sensor is located on the
flue gas collector.
1. Remove the screws, the cable strap and connector
cover from the flue gas collector and set aside.
2. Disconnect the flue gas temperature sensor cable
from the flue gas sensor.
3. Gently remove the sensor with a pair of pliers and
insert the new sensor.
4. Reconnect the cable and install the cable strap and
connector cover with screws and tighten.
IMPORTANT
When inspecting or servicing the flue gas pipe coupling
inspect the coupling for leaks using a certified leak detector.
For Boilers Equipped with Combined Temperature Sensor
Note: The flue gas temperature sensor is located on the flue
gas collector.
1. Remove spring clip from the sensor well and set aside.
2. Remove the flue gas temperature sensor from the sensor
well.
3. Disconnect sensor cable plugs 15A/15B
4. Connect new sensor to sensor cable plugs 15A/15B and
install into the sensor well
5. Reinstall spring clip
IMPORTANT
When inspecting or servicing the flue gas pipe coupling
inspect the coupling for leaks using a certified leak detector.