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fLUe
systeM(Smoke
chimney pot)
This chapter has been drawn up pursuant to European
standards EN 13384, EN 1443, EN 1856 and EN 1457.
The installer must observe both these and any other
local regulations.
This manual does not in any way substitute such
regulations.
The product must be connected to a flue system which
ensures that the smoke produced by combustion is
discharged in complete safety.
Before positioning the appliance, the installer must
check that the flue is suitable.
SMOKE DUCT, FLUE
The smoke duct (which connects the smoke outlet of
the combustion chamber with the flue) and the flue
itself must, among other regulatory requirements:
• receive the smoke from a single product (outlets
from multiple appliances may not be conveyed
into a single flue)
• be routed vertically for the most part
• have no downwards sloping sections
• preferably have a circular internal cross section, or
with a ratio of the sides of less than 1.5
16
• terminate at roof level with a proper chimney pot:
the flue may not discharge directly onto the wall
or into an enclosed space, even if the space in
question is open to the sky
• be made of material with rated fire reaction class
A1 as per UNI EN 13501 or analogous national
regulations
• be certified, with a chimney plate if metal
• be of uniform cross section or vary in cross section
only immediately after the outlet, not at some mid
point of its length
InstALLAtIon
duct,
flue
and
InstALLeR
tHe sMoKe DUct
Further to the general prescriptions for the smoke duct
and flue, the smoke duct:
• may not be made of flexible metal material
• must be insulated, if routed through unheated
areas or outdoors
• must not be routed through rooms where the
installation of combustion heat generators is
prohibited, where there is risk of fire, or which
cannot be inspected
• must enable the recovery of soot and be open for
inspection
• must have at most 3 bends with a maximum angle
of 90°
• if there is a horizontal section, it must be a single
one with a maximum length of no more than 3
metres, depending on the draw. Note, in any case,
that long sections promote the accumulation of
dirt and are harder to keep clean.
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