Checking Gaskets And Thermal Insulation Components On The Boiler - Viessmann VITOCROSSAL 300 Service Instructions Manual

Further details regarding the individual steps
Checking gaskets and thermal insulation components on the
boiler
A
B
C
D
1. Check flue gas collector seal A
between flue gas collector C and
boiler body B for tightness.
2. Check lip seal D on the boiler flue
connection for tightness.
Note
■ The seals/gaskets can also be
checked under full load with an
inspection mirror. If required,
remove the thermal insulation com-
ponents.
■ Traces of condensate on the out-
side of flue gas collector C indi-
cate a leak.
E
Commissioning, inspection, maintenance
(cont.)
3. If required, retighten flue gas collec-
tor seal A at tensioning toggles E
or replace. Replace lip seal D if it
leaks.
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