13
3-FLUE
Technical Dept. - All rights reserved - Reproduction prohibited
TYPICAL DIAGRAM OF A CORRECTLY LAID CHIMNEY
FLUE WITH, AT THE FOOT OF THE EXTERNAL UPDRAFT
SECTION, THE POSITIONING OF A CHAMBER WITH A SEALED
HATCH TO COLLECT AND REMOVE THE SOLID MATERIALS
PRODUCED DURING COMBUSTION.
EXAMPLE OF CLOSED FIREPLACE FITTING
A. CERAMIC FIBRE INSULATION
B. SMOKE FITTING
C. CHIMNEY FLUE
D. HOOD GRID
For closed fireplaces installed in studio flats, bedrooms and bathrooms (where allowed), it is mandatory to connect the combustion air to
the outside. In particular for sealed products the connection must be sealed in order not to compromise the overall sealed characteristic
of the system.
DISTANCE (metres)
The air inlet must be at a distance of:
1.5 m
BELOW
Windows, doors, smoke outlets, cavities, ....
1.5 m
HORIZONTALLY
Windows, doors, smoke outlets, cavities, ....
0.3 m
ABOVE
Windows, doors, smoke outlets, cavities, ....
1.5 m
AT A DISTANCE
from smoke outlet
CONNECTION TO THE FLUE
The connection between the flue and the appliance must be via a smoke duct that complies with EN 1856-2. To connect the fireplace to
the chimney flue or to a ceiling connection that is not coaxial to the unit’s smoke outlet, changes of direction must be made using open
bends no greater than 45° with respect to the vertical. The same solution needs to be used to connect the fireplace to the chimney (see
figure below)
The diameter of the smoke duct must be equal to or greater than that of the appliance outlet. Any increase in the cross-section is only
allowed at the connection to the chimney
