Checking The Burner Gauze Assembly; Checking And Adjusting The Ignition And Ionisation Electrodes - Viessmann Vitodens 300 Service Instructions Manual

Further details regarding the individual steps

Checking the burner gauze assembly

Replace the burner gauze assembly if the wire mesh is damaged.
Checking and adjusting the ignition and ionisation electro-
des
A Ionisation electrode
Initial start-up, inspection, maintenance
(cont.)
1. Remove electrodes A.
2. Turn thermal insulation ring B
clockwise and remove.
3. Release the eight Torx screws C
and remove the burner gauze
assembly D.
4. Remove the old gauze assembly
gasket E.
5. Insert a new burner gauze assem-
bly with a new gasket, and secure
with eight Torx screws.
Note
Torque: 4.5 Nm
6. Refit the thermal insulation ring B.
B Ignition electrodes
19