8
CS.ECO-TFT.IST-1-EN / Rev 1.0
ENGLISH
-
It must preferably have a round internal cross-section: square or rectangular cross-sections must have rounded corners with radius not inferior to
20 mm;
-
It must have a constant, free and independent internal cross section;
-
Rectangular cross-sections must have a maximum ratio of 1.5 between the sides;
-
It must be insulated
to prevent the fumes from cooling and condensate from forming;
-
Flue gas pipes (for the section from the appliance to the flue inlet) must be mounted using parts made from non-combustible materials capable
of withstanding combustion by-products and their potential condensate
(it is strictly forbidden to use aluminium flues)
;
-
It is forbidden to use fibre-cement pipes to connect the appliance to the flue;
-
Flue gas pipes must not pass through rooms in which the installation of combustion devices is prohibited;
-
The flue gas pipes must be assembled in such a way as to guarantee adequate sealing of flue gases when the appliance works in negative-
pressure conditions;
-
It is forbidden to install horizontal sections
;
-
It is forbidden to use counter-sloping elements
;
-
The flue gas pipe must allow for the recovery of soot or be cleanable, and must have a constant cross-section;
-
It is forbidden to allow other air intake pipes and system pipes to transit inside the flue gas pipes, even if they are over-sized.
FURTHER SPECIFICATIONS TO BE CONSIDERED
-
The appliance works with the combustion chamber in negative pressure and the flue pipe under pressure;
it is essential that the flue gas
outlet is hermetically sealed.
-
The flue pipes inside the installation room must be made of a suitable material
(see applicable regulations)
and equipped with sealing gaskets
with a minimum diameter of 120 mm.
-
The pipes must have a double wall (thermally insulated) or be suitably insulated with rock wool. The maximum temperature of the flue
pipe inside the room must not exceed 70°C.
-
IT IS MANDATORY TO HAVE AN INITIAL VERTICAL SECTION OF AT LEAST 0.5 M IN ORDER TO GUARANTEE CORRECT FLUE GAS
DISCHARGE.
-
Every direction change must be carried out with a T-shaped fitting and inspection cap. The pipes must be smoketight by means of special seals
capable of withstanding temperatures of up to 250°C. Attach the pipes to the wall with special collars to prevent possible vibrations.
-
IT IS STRICTLY FORBIDDEN TO INSTALL DRAUGHT REGULATION VALVES (BUTTERFLY VALVES).
If the flue is old or too large (internal diameter greater than 15 cm), it must be ducted using a stainless steel pipe that is suitably insulated (with rock
wool or vermiculite) and sized according to the route. The connection to the flue must be appropriately sealed.
When assembling the flue, there must be no more than 4 direction changes.
100 mm
120 mm
INSPECTION
MI
N
IMUM
0
.5
m
INSPECTION
