Operating instructions

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
2 or O2
concentration in the combustion air at
the annular gap of the balanced flue
pipe.
The flue pipe is deemed to be gas-
tight if the CO
2 concentration in the
combustion air is no higher than 0.2 %
or the O
2 concentration is at least
20.6 %.
If actual CO
2 values are higher or O2
values are lower, then pressure test
the flue pipe with a static pressure of
200 Pa.
Burner removal
Further details regarding the individual steps (cont.)
17
Commissioning, inspection, maintenance
5692 672 GB