Burner Removal - Viessmann VITODENS 200-W Service Instructions Manual

Further details regarding the individual steps
For balanced flue systems tested
together with the wall mounted gas
fired boiler, the requirement for a
tightness test during commissioning
by the flue gas inspector is not applic-
able.
We recommend that your heating
engineer carries out a simple leak/
tightness test during the commission-
ing of your system. For this, it would
be sufficient to check the CO
concentration in the combustion air at
the annular gap of the balanced flue
pipe.

Burner removal

Commissioning, inspection, maintenance
The flue pipe is deemed to be gas-
tight if the CO
combustion air is no higher than 0.2 %
or the O
2
20.6 %.
If actual CO
values are lower, then pressure test
the flue pipe with a static pressure of
200 Pa.
or O
2 2
(cont.)
concentration in the
2
concentration is at least
values are higher or O
2 2
17