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THE INSTALLATION OF THIS APPLIANCE MUST
COMPLY WITH CURRENT D.T.U.
(French Code of Practice) SPECIFICATIONS.
INSTALLATION BY A QUALIFIED TRADESMAN IS
RECOMMENDED.
ALL LOCAL, NATIONAL, AND EUROPEAN
REGULATIONS MUST BE RESPECTED WHEN
SETTING UP THE APPLIANCE.
The user should not in any way modify the appliance or
its installation.
Installation
should
recommandations given below. However, these cannot
under any circumstances replace strict application of
any of the provisions of DTU 24-2-2.
Power
Draft
Mass
rating
smoke
8 kW
12 Pa
6g/s
1 - DEFINITION OF COMPONENTS
INCLUDED IN THE SMOKE EVACUATION
SYSTEM (Fig. 1)
2 - CHARACTERISTICS AND SIZE OF THE
SMOKE FLUE, TO WHICH THE
APPLIANCE MUST BE CONNECTED
2.1 - Type of Smoke Flue
2.1.1 - New Smoke Flue
The following materials must be used :
•
Fireclay flue blocks compliant with French Standard
NF EN 1806
•
Concrete flue blocks compliant with NF EN 1858
•
Composite metal pipes compliant with NF EN
1856-1 and NF EN 1856-2 or which have received
"Avis Technique" approval (*) for this use
•
Fireclay bricks compliant with NF P 51-301
•
Refractory bricks compliant with NF P 51-302
The use of certified insulating materials means that on-
the-spot insulating work can be avoided, particularly
where the chimney stack is concerned (minimum
thermal resistance 0.43 m
2.1.2 - Existing Smoke Flue
The installer is responsible for existing parts. He should
check the condition of the flue and carry out any work
required in order to ensure that it is in proper working
order and compliant with the regulations in force.
He should sweep the flue and then check the following
very thoroughly :
•
Compatibility of the flue with the intended use ;
•
Stability ;
•
That the flue is empty and smoke-tight (DTU 24-1,
Appendix II).
comply
with
the
discharge
of
Temperature
of smoke
310°C
2
k/W).
If the flue is not compatible, make a casing using an
approved method ("Avis Technique" certificats (*) or
install a new flue.
(*) French assessment and certification system
2.2 - Minimum Flue Section
Sizing according to standard EN13384-1. In all cases
the cross section of the connecting flue must be at least
equal to the cross section of the nozzle of the
appliance.
2.3 - General Recommendations
•
basic
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.
•
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.
•
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) :
T° C class of the
flue
T450
-11-
Composite metal smoke flues
0.4 < Ru
Ru ≤ 0.4
≤ 0.6
forbidden
8 cm
Ru > 0.6
5 cm
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