LIGHT series
ENGLISH
2.3.7
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For the connection of the unit to the chimney
fl
ue, use only
non-combustible elements suitable to resist to the combustion
products and to the condensate (creosote) build-up.
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The appliance works with negative pressure; to prevent
creosote from building up and be conveyed to the appliance
it is important that the connection to the chimney
fl
ue be
sealed and airtight.
The connection to the chimney
fl
ue should ensure easy
removal of soot and routine cleaning by means of a metal
brush.
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After having placed the appliance in the exact position as
indicated under section 2.3.3, use rigid steel pipes with the
same section as the “
fl
ue exit pipe” (see technical sheet,
section 1.3) to carry out the connection to the chimney
fl
ue,
and perfectly seal the connection. (Use UL certi
fi
ed products
according to the standard UL-127
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2.3.8
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The passageway for conveying
fl
ue gases from the appliance
to the “chimney
fl
ue” (technically, chimney) is called “
fl
ue
conduit”. The
fl
ue conduit must be built in compliance with
the standard UL-127
The chimney
fl
ue or the vertical exhaust vent for the
fl
ue
gases from a natural draught appliance must therefore meet
the following requirements:
t
be
fl
ue gas- and water-tight, and properly insulated from
combustible or
fl
ammable materials according to the usage
conditions.
t
be made of materials resistant to usual mechanical shocks,
heat,
fl
ue gases and possible condensate;
t
have all connections to the di
ff
erent elements of which the
fl
ue conduit is made of properly sealed and airtight;
t
be as much as possible vertical; any angle from its axis must
not exceed 45°;
t
be installed at an adequate distance away from any
combustible or
fl
ammable materials by means of an air
fl
ow
or of an insulating material;
t
have an inner section preferably circular; we therefore
recommend piping installed within square or rectangular
chimneys (which otherwise must have a 1-to-1.5 internal sizes
max. ratio and a radius of curvature of the interior angles of at
least 20 mm);
t
the interior section must be invariable, free from constrictions
and independent.
A cleanout opening with a tight
fi
tting lid under the
connection betweeen the exhaust pipe an the appliance
should be provided for allowing access to the chimney
fl
ue
for purposes of inspecting and removing solid materials and
possible condensate.
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