Viessmann VITOCROSSAL Service Instructions Manual page 22

Commissioning, inspection, maintenance
Checking the burner gauze assembly and thermal...
A
Fig. 12 120 to 160 kW
Ignition and ionisation electrodes
A
Burner gauze assembly gasket
B
Insulation mat
C
Burner door gasket
D
1. Remove electrodes.
2. Undo 4 nuts. Remove burner gauze assembly and
insulating parts.
!
Please note
Damage to the burner gauze assembly will
impair the burner function.
Do not damage the mesh.
Never touch the mesh of the burner gauze
assembly. Place the burner horizontally onto
a suitable surface.
22
B
4x
G
(cont.)
E
D
C
Thermal insulation block
E
Burner gauze assembly
F
Fan
G
3. Replace any damaged components. Use new gas-
kets.
Note
Observe the positioning aid on the thermal insula-
tion block.
4. Reassemble in reverse order. Observe torque val-
ues, see table on page 24.
F