40
A
Fig. 28
A
Combustion air aperture (ventilation air)
For balanced flue systems tested together with the
heat source, there is no requirement for a tightness
test (overpressure test) during commissioning by the
flue gas inspector.
In this case, we recommend that your heating contrac-
tor carries out a simple tightness test during the com-
missioning of your system. For this it would be suffi-
cient to check the CO
2
or O
2
concentration in the com-
bustion air at the annular gap of the balanced flue
pipe.
If the CO
2
concentration is less than 0.2 % or the O
2
concentration is greater than 20.6 %, the flue pipe is
deemed to be sufficiently gas tight.
If actual CO
2
values are higher or actual O
2
values are
lower, a pressure test with a static pressure of 200 Pa
will need to be carried out on the flue pipe.
Commissioning, inspection, maintenance
Tightness test on balanced flue system (annular gap check)
5789 302 GB
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Страница 6: ...6 15 Keyword index 152 Index Index cont 5789 302 GB ...
Страница 12: ...12 1 4 2x 3 2 5 Fig 5 Installing the boiler Removing the front panels 5789 302 GB Installation ...
Страница 26: ...26 2 2x 4 1 5 3 Fig 19 Installing the boiler Fitting the front panels 5789 302 GB Installation ...
Страница 117: ...117 Parts lists Hydraulics 5789 302 GB Components ...
Страница 128: ...128 0008 0009 0004 0005 0006 0003 0002 0001 0007 Fig 75 Parts lists Miscellaneous 5789 302 GB Components ...
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