3
Installation
G
B
NO
YES
Pict. 2: characteristics of the chimney cap
• Every device must have its own flue with a
diameter equal to or larger than the stove’s
smoke clearing tube and a height not less
than that declared.
• Never use two stoves, a chimney and a
stove, a stove and a wood kitchen, etc in
the same environment, since the draught of
one could damage the draught of the other.
• Collective type ventilation ducts that can
lower the atmospheric pressure in the
installation environment are not permitted,
even if installed in environments that are
adjacent to and communicating with the
locale of the installation.
• It is forbidden to make fixed or mobile ope-
nings in the flue to connect devices diffe-
rent from that for which it is originally inten-
ded.
• It is forbidden to pass other air feeding
channels or tubes for electrical system
usage through the flue, even if oversized.
• It is advisable that the flue be furnished with
a chamber which collects solid material
and eventual condensation situated below
the vertical entrance to the flue so that it is
easily opened and inspected through the
air-tight door.
• Whenever flues with parallel exits are used
it is advisable to raise the upwind chamber
by one element.
• The chimney tube must never pass across a
combustible surface.
The Chimney Cap
The chimney cap must respect the following
requirements:
• It must have the equivalent diameter and
internal form of the flue.
• It must have a useful outlet diameter of not
less than double that of the flue.
• The chimney cap on the roof or that remains
in contact with the outside (for example, in
case of open lofts or attics), must be cove-
red with elements in brick or tile and must,
in any case, be well insulated.
• It must be constructed to prevent rain,
snow, and extraneous bodies from entering
the flue and so that the discharge of the
products of combustion is not inhibited by
wind from any quarter or strength (wind-
proof chimney cap).
• The chimney cap must be positioned in
such a way as to guarantee the adequate
dispersion and dilution of the products of
combustion and in any case, must be out
of the reflux zone. This zone has different
dimensions and forms according to the
angle of inclination of the roof so it is
necessary to adopt minimum heights
(Pict. 2).
• The chimney cap must be a wind-proof
type and must be above the ridge.
• Eventual structures or other obstacles
that are higher than the chimney cap
must not be too close to the chimney cap
itself.
