Viessmann VITOCROSSAL Service Instructions Manual page 23

Checking the burner gauze assembly and thermal...
Check the burner gauze assembly for damage and
contamination. In the event of damage or heavy con-
tamination, replace the burner gauze assembly.
A
Fig. 13 From 200 kW
Ignition and ionisation electrodes
A
Burner gauze assembly gasket
B
Insulation mat
C
D Burner door gasket
1. Remove electrodes.
4x
G
H
Commissioning, inspection, maintenance
E
D
C
B
Thermal insulation block
E
Burner gauze assembly
F
G Fan
Venturi extension, only for open flue operation
H
(cont.)
F
23