Type And Characteristics Of The Pipe Connecting The Appliance To The Smoke Flue; Ventilation Of The Area In Which The Appliance Is To Be Installed; Connection To Primary Air Supply - deville C07931 Instrucciones De Instalacion Y Uso

- 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.
•
The airtightness, the insulation, openings in the
ceiling and floor, and safety distances must be
strictly compliant with DTU 24-2-2 and DTU 24-1.
•
The safety distance between the smoke extraction
flue and all combustible materials is determined
depending on the heat resistance of the flue (Ru
expressed in m² K/W) :
Composite metal smoke flues
T° C class of the
Ru ≤ 0.4
flue
T450 forbidden
Single or multiple concrete and fireclay smoke flues
T° C class of the 0.05 < Ru
flue ≤ 0.38
T450 10 cm
6.3 – 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. 7). 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).
6.4 – Draught conditions:
•
Draught is measured on the connecting pipe at a
point approximately 50 cm above the outlet on the
appliance.
0.4 < Ru
Ru > 0.6
≤ 0.6
8 cm 5 cm
0.38 < Ru
Ru > 0.65
≤ 0.65
5 cm 2 cm
•
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. 8).
•
The damper does not affect stove performance
when the door is open.
6.5 – 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. 9).
A : FAVOURABLE
Face in prevailing wind, favour the flow of fresh
air and smokes.
B : UNFAVOURABLE
Face opposite prevailing wind.
•
The air supply exit must be located as close to the
appliance as possible. It must be able to be capped
when it emerges directly into the room. While the
appliance is working, make sure that it is free of
any obstruction.
•
The air intake section should be at least equal to
one-quarter of the section of the smoke flue with a
minimum of :
2
- 70 cm for use only with the doors closed.
•
It may be necessary to stop the extractor of the
mechanical ventilation so as to avoid smoke
coming back into the room when the door is
opened.
6.6 – Connection to primary air supply
•
The appliance is fitted with an air intake located
under the appliance, providing air from the exterior
via a Ø 100 aluminium duct (Fig. 14).
•
The length of the duct should not be in excess of 3
metres.
NB: The ventilation of the room must never be
removed.
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draught depending on flue