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Installation information
Prior to installation, the local flue gas
inspector should check that the shaft to
be used is suitable and permissible
[where applicable].
Shafts that were previously connected
to oil or solid fuel boilers must be thor-
oughly cleaned by a chimney sweep.
Loose deposits comprising sulphur and
soot must not remain on the inside of
the chimney. Running a balanced flue
pipe through the shaft is then not
required. If thorough cleaning is impos-
sible, if chloride deposits are present or
if the shaft is silted up, a separate bal-
anced flue pipe must be used inside the
shaft. Alternatively, separate (on site)
routing for the ventilation air and the
flue gas may be used.
In the installation room, at least one
inspection port must be provided in the
flue system for inspection, cleaning and
for testing the pressure (if required). If
the flue is not accessible from the roof,
a second inspection port must be provi-
ded behind the chimney cleaning hatch
in the attic.
Provide an inspection port at the base
of the shaft for inspecting the secon-
dary ventilation. Safeguard condensate
drainage from the flue to the boiler with
a fall of at least 3° (approx. 50 mm/m).
The flue system must protrude above
the roof line. Observe 400 mm protru-
sion from the roof parallel to the roof
slope according to FeuVo [or local reg-
ulations].
Routing through a shaft
5780 223 GB
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