Idiomas disponibles
Idiomas disponibles
5.2.3 - General Recommendations
•
A good flue will be built of materials with low heat
conducting properties so that it stays hot.
•
Flue casing should be such as to limit the external
surface temperature to the following :
- 50° C in living areas
- 80° C in non-living or inaccessible areas
•
lt should be completely smoke-tight, stable and
have no rough spots.
•
There should be no sudden changes in section
(slope in relation to the vertical less than 45° ).
•
It should extend at least 0,4 m above the ridge of
the roof and of adjacent roofs.
•
Two appliances should not be connected to the
same flue.
•
It should come out into the room containing the
appliance at a height of at least 50 mm.
•
The interior face should be at least 16 cm away
from any wood or combustible materials.
•
Flue blocks should be placed with the male part
towards the bottom so as to avoid any leaks to the
outside.
•
The flue should include no more than two changes
of direction, i.e. no more than one non-vertical
section.
- If the flue is in masonry :
The bend angle should not exceed 45° over a total
flue height limited to 5 m. For any greater height,
this angle should not exceed 20° .
- If it is an insulated metal flue :
The bend angle should not exceed 45° with the
height limited to 5 m between the top and bottom
of the bend. There is no limitation as to total flue
height.
•
Smoke-tightness, insolation, openings in walls or
floors and sale fire distances should all strictly
comply with the provisions of DTU 24-2-2.
5.3 – Type and characteristics of the pipe
connecting the appliance to the smoke
flue
•
A connecting pipe must be installed between the
appliance and the smoke flue outlet.
•
The pipe should consist of an "Avis Technique"
approved rigid or flexible multi-fuel tube designed to
be used directly with a closed fireplace. lt should be
noted that the following are forbidden : aluminium,
aluminium steel and galvanized steel ;
•
The following are approved : black plate (min.
thickness 2 mm), enamelled plate (min. thickness
0,6 mm) and stainless steel (min. thickness 0,4
mm).
•
The flue must be visible over its whole length
through a grille or inspection flap and be able to be
swept by mechanical means (Fig. 5). Any
expansion should not adversely affect the smoke-
tightness of the joins at either end or its mechanical
performance or that of the smoke flue. lts design,
and more especially the connection between it and
the smoke flue, should be such as to prevent the
accumulation of soot, particularly when it is being
swept.
•
Connections to the appliance and the flue should
strictly comply with DTU 24.2.2 and with the
specifications of the pipe ; they should include all
the recommended parts (end pieces and all other
fittings).
5.4 – Draught conditions:
•
Draught is measured on the connecting pipe at a
point approximately 50 cm above the outlet on the
appliance.
•
The following draught is required for proper working
with the door closed :
- 6 Pa at reduced speed (0,6 mm WG)
-12 Pa at normal speed (1,2 mm WG)
As there is always some doubt as to any evaluation
of
the
possible
characteristics, it is advisable to systematically
install a damper.
•
The damper ensures that the appliance works
properly, even when the draught is considerable
(high flue, piping). It should be readily visible and
accessible (Fig. 6).
•
The damper does not affect stove performance
when the door is open.
5.5 - Contribution of the necessary air for the
proper working of the appliance
Important :
- If your appliance is placed on a flagstone, you should
dismantle the Ø 100 nozzle (see Fig. 1 Ref. 18) which
is attached by three screws.
- If you would like to use the Ø 100 nozzle for an
external air intake, envisage the accessibility of its
connection.
5.5.1 – Ventilation of the area in which the
appliance is to be installed
•
The appliance needs air in addition to the air
required by the statutory air change rate. This is
obligatory when the dwelling includes mechanical
ventilation.
•
The air intake should give directly to the outside or
should be located in an area ventilated to the
outside ; it should also be protected by a grille (see
advised layout Fig. 7).
17
draught
depending
on
flue
