Installation, use and maintenance guide
PIDRA 18
Page
43
ENG
9.3 SMOKE OUTLET
The smoke channel, the exhaust pipe, chimney and flue outlet (defined as the system for the evacuation of
combustion products), are parts of the heating system and they must comply with the legislative requirements of the
Ministerial Decree DM 37/08 (ex Italian Law 46/90) and to the applicable specific installation regulations, according to
the type of fuel. Fireplaces, stoves and barbecues must not be installed in locations where gas appliances type A and
type B are present and operating (for the classification see UNI 10642 and UNI 719). The connection between the
appliance and the flue outlet must only receive exhaust from one heat generator.
The installer must provide one or more access points on the flue outlet to check the emissions once the appliance
has been installed; these access points must be made in such a way as to be air-tight sealable to prevent exhaust
gas leaks.
The appliance is equipped with a smoke exhaust motor, it works in low pressure and with very low smoke
temperatures, consequently it is recommended to insulate it and to ensure that the flue outlet is sized appropriately in
order to avoid the possible risk of creating condensation.
9.3.1 CHIMNEY TYPES
The following types of chimneys, constructed as described, are possible:
• System: Chimney installed using a combination of compatible components (flue liner, insulation, outer casing etc…), constructed
or specified by a single manufacturer and CE certified in accordance with the applicable standard;
• Composite chimney: Chimney installed or constructed on site using a combination of compatible components such as flue liner
(wall directly in contact with the smoke), and possibly also insulation and outer casing (wall) that may be supplied by different
manufacturers or by the same manufacturer.
• Relining: operation involving the installation of a specific pipe in an existing shaft (even if newly constructed) made of non-
combustible materials, free from obstructions and for single use.
9.3.1 CHIMNEY TYPES
The following types of chimneys, constructed as
described, are possible:
• System: Chimney installed using a combination of
compatible components (flue liner, insulation, outer
casing etc…), constructed or specified by a single
manufacturer and CE certified in accordance with the
applicable standard;
• Composite chimney: Chimney installed or constructed
on site using a combination of compatible components
such as flue liner (wall directly in contact with the
smoke), and possibly also insulation and outer casing
(wall) that may be supplied by different manufacturers or
by the same manufacturer.
• Relining: operation involving the installation of a
specific pipe in an existing shaft (even if newly
constructed) made of non-combustible materials, free
from obstructions and for single use.
9.3.2 FLUE OUTLET / FLUE SYSTEM COMPONENTS
Every chimney must have minimum number of
components as laid down by standard UNI EN 1443 which are also indicated in the figure below:
ATTENTION: Wall outlets, that is outlets installed on the outer front wall without the use of a chimney/flue outlet /flue
pipe to convey the combustion products to the roof, are strictly prohibited.
Components and accessories of a
chimney
Key
1 Chimney
2 Flow path
3 Smoke discharge tube
4 Thermal insulation
5 External wall
6 Outer lining
7 Flue outlet section
8 Multiwall chimney
9 Connector
10 Flue pipe
11 Heat generator
