Type And Characteristics Of The Pipe Connecting The Appliance To The Smoke Flue; Walls In The Vicinity Of The Appliance; Installation Advice - deville C07922 Instrucciones Para La Instalación Y El Uso

- 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).
5.3 – 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 draught
characteristics, it is advisable to systematically
install a damper.
depending on flue
•
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 - Ventilation of the local 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).
A : FAVOURABLE
Face in prevailing wind , favour the flow of fresh
air and smokes:
B : UNFAVOURABLE
Face opposite prevailing wind.
•
The air intake outlet should be located directly in
the fireplace and come out as near as possible to
the appliance.The user should be able to close it off
when it comes out directly into the room.
•
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 with the door closed only
2
- 200 cm for use with the door open or closed (For
certain appliances only : see user's manual).
•
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.
5.6 – Walls in the vicinity of the appliance
5.6.1 - Installation advices
Remove all materials that are either combustible or
affected by temperature from walls and inside elements
(doors, walls and ceilings) near the chimney and the
fireplace.
•
The appliance should be encased in MO-rated
incombustible materials.
•
The floor should be of incombustible material from
under the appliance to at least 400 mm in front of
the appliance.
•
If the mantelpiece is made of a combustible
material (a wooden beam, for example), it must be
protected by some sort of incombustible material,
by a deflector or by the fascia (see DTU 24-2-2 and
Fig. 14).
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