Viessmann Vitotwin 300-W Installation And Service Instructions For Contractors page 72

Commissioning, inspection, maintenance
Further details regarding the individual steps
B
1. Remove electrodes B.
2. Undo three retaining clips C on ther-
mal insulation ring D and then
remove thermal insulation ring D.
3. Undo four Torx screws and remove
burner gauze assembly E with gas-
ket F.
72
F E
4. Insert new burner gauze assembly
E with new gasket F and secure.
Torque: 3.5 Nm.
5. Fit thermal insulation ring D.
6. Fit electrodes B.
Torque: 4.5 Nm.
(cont.)
3x
D A C