Check Burner Gasket And Cylinder Assembly For Damage; Check And Adjust Ignition And Ionization Electrodes - Viessmann VITODENS 100-W WB1B Series Installation And Service Instructions Manual

Steps
(continued)
Maintenance
Fig. 59
Maintenance
Start-up and Maintenance
Fig. 60
Initial Start-up, Inspection and Maintenance

14. Check burner gasket and cylinder assembly for damage

Check the burner gasket A and burner cylinder assembly D for damage and
replace if necessay. Replace the cylinder burner assembly if damaged.

15. Check and adjust ignition and ionization electrodes

1. Check ignition and ionization
electrode for wear, contamination
or warping.
2. Clean electrodes with a small
brush or emery paper.
3. Check clearances. If clearances
are not satisfactory or the
electrodes are damaged, replace
electrode block and gasket and
align. Tighten fastening screws
for the electrodes to a torque of
2.6 lb.ft. / 3.5 Nm using a
calibrated torque wrench.
4. Reinstall grounding wire.
Legend
A Ignition ionization electrode
B Ground
1. Remove electrode block B.
2. Loosen the three Torx screws and
remove the thermal insulation ring
C.
3. Loosen the four Torx screws and
remove burner cylinder assembly
D and assembly gasket E.
4. Fit and secure new burner cylinder
assembly D and new assembly
gasket E.
Tighten to a torque of 2.6 lb.ft. /
3.5 Nm using a calibrated torque
wrench.
5. Reinstall thermal insulation ring C.
6. Reinstall electrode block B.
Tighten to a torque of 2.6 lb.ft. /
3.5 Nm using a calibrated torque
wrench.
57