Minimum height of the
outlet from the roof
Reflux area height
β A H min = Z + 50 cm Z
[°] [m] [m] [m]
15 1.85 1.00 0.50
30 1.50 1.30 0.80
45 1.30 2.00 1.50
60 1.20 2.60 2.10
5.2.5 Connection to external air intakes
To ensure correct operation, the appliance must have sufficient air available by means of external
air intakes, which must meet the following requirements:
a) They must have a total free section of at least 80 cm².
b) They must be protected by a grate, metal mesh, or other suitable protection provided that it
does not reduce the minimum section as per point a) and that it is positioned in such a way as to
prevent the intakes from being obstructed.
If the combustion air is collected directly from the outside by means of a pipe, it is necessary to fit
a downward bend or a wind hood on the outside. In addition, no grating or similar device should
be positioned. (Extraflame S.p.A. suggests creating an air intake directly communicating with the
installation room, even if air is collected from outside by means of a pipe).
Air inflow can also be obtained from a room adjacent to the installation room, provided that the
flow can occur freely through permanent openings communicating with the outside.
The adjacent room must not be subject to depression with respect to the outside as a result of the
opposing draught caused by the presence of another utility device or suction device in this room.
In the adjacent room, the permanent openings must meet the requirements described above.
The adjacent room cannot be used as a garage, storage area for combustible material, or for
activities involving fire hazards.
5.2.6 Insulation, trims, facings, and safety precautions
The facings, no matter what type of material they are made of, must constitute a self-bearing
structure with reference to the heating assembly and not in contact with it.
The beam and the trims in wood or combustible materials must be positioned outside of the
radiant area of the hearth or be properly insulated.
If the space above the heat generator has coverings made of combustible or heat-sensitive
material, a protective membrane made of non-combustible insulating material must be placed
between it and the generator.
All elements made of combustible or flammable material, such as wooden furnishings, curtains,
etc., that are directly exposed to the radiance of the hearth must be placed at a safe distance.
5.2.7 National, regional, provincial and municipal laws
All the national, regional, provincial ad municipal laws of the country where the appliance has been
installed must be taken into consideration.
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