Checking The Burner Gasket And Burner Gauze Assembly - Viessmann VITODENS 222-F Installation And Service Instructions Manual

Commissioning, inspection, maintenance

Checking the burner gasket and burner gauze assembly

A
Fig. 34
Check burner gauze assembly
gasket for damage. Only remove and replace com-
G
ponents if they are damaged or worn.
Note
If replacing the burner gauze assembly, also replace
the gauze assembly gasket and the fixing screw.
1. Disconnect plug with ignition electrode leads from
ignition unit A .
2. Remove electrodes
B
3. Undo Torx screw . Hold onto burner gauze
C
assembly D when undoing the screw.
4. Remove burner gauze assembly
and thermal insulation ring
for damage.
5. Install new burner gasket
installation position. Align the tab as per the dia-
gram.
42
C
B
, electrodes and
D B
.
with gasket
D
. Check components
F
. Observe correct
G
G
6. Insert thermal insulation ring
assembly with gasket
D
installation position. Align the tab as per the dia-
gram.
7. Align the hole in burner gauze assembly
the burner door pin.
Secure burner gauze assembly
screw C .
Torque: 3.0 Nm.
8. Check thermal insulation ring
9. Fit electrodes B
chapter.
Torque: 4.5 Nm.
E
D
E
F
and burner gauze
F
. Observe correct
E
D
with Torx
D
for firm seating.
F
. Check clearances, see following
with