Clean the flue gas temperature sensor [~2500 Bh/yearly]
1. Remove the insulating cover and thermal insulation
2. Release the retaining screw and remove the flue gas temperature sensor from the
flue gas pipe
3. Wipe the flue gas temperature sensor with a clean cloth
4. Push in the flue gas temperature sensor until about 20 mm of the sensor remains
protruding from the bushing and secure with fixing screw
Clean the flue gas pipe [~2500 Bh /yearly]
❒ Unplug the connection cable of the induced draught fan
➥ This prevents damage to the fan from the cleaning brush
❒ Remove the inspection cover on the connecting pipe
❒ Clean the connecting pipe between the boiler and chimney with a chimney
sweeping brush
➥ Depending on the layout of the flue gas pipes and the chimney draught,
cleaning once a year may not be enough!
❒ Plug in the connection cable of the induced draught fan
Check the draught regulation damper [~2500 Bh/yearly]
❒ Check that the draught controller flap moves freely
Servicing the system
5
Maintenance work by the operator
Operating Instructions T4e | B1560520_en
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