Checking The Burner Gasket And Burner Gauze Assembly - Viessmann VITODENS 111-W Installation And Service Instructions Manual

Removing the burner
4. Undo gas supply pipe fitting

Checking the burner gasket and burner gauze assembly

A
Fig. 30
Check burner gauze assembly
mal insulation ring F and gasket
remove and replace components 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 when undoing the screw.
D
(cont.)
E .
C
B
, electrodes , ther-
D B
G for damage. Only
.
Commissioning, inspection, maintenance
5. Undo 4 screws
F and remove the burner.
Note
Cover gas connection
can fall into it.
F
G
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.
6. Insert thermal insulation ring
assembly with gasket
D
installation position. Align the tab as per the dia-
gram.
so that no small parts
E
D
E
C H
with gasket
D
F . Check components
. Observe correct
G
and burner gauze
F
. Observe correct
E
E
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