deville C07706 Notice D'installation page 7

1.2.1.1 New flue
The following materials must be used :
. Fireclay flue liners compliant with French Standard NF P 51-311.
. Concrete flue liners compliant with NF P 51-321.
. Composite metal ducts compliant with NF D 35-304 and NF D 35-303.
. Fireclay bricks compliant with NF P 51-301.
. Refractory bricks compliant with NF P 51-302.
Using already insulated materials avoids having to insulate during installation, which is especially useful where stacks
linings are concerned.
1.2.1.2 Existing flue
Whoever is doing the installation is responsible for existing work, and therefore should check the flue and carry out any
work required to ensure it is in proper working order and that it complies with current regulations.
Sweep the flue and then thoroughly inspect it to check the following :
. the flue's suitability for its intented use
. stability
. lack of any obstruction and absence of leaks (DTU 24-1, Appendix II).
If the flue is not compatible with the stove, install the required tubing using an approved and certificated method (in
France, a method that has an "Avis Technique" certificate), or else put in a new flue.
1.2.2 Minimum flue section
Square or oblong liners : minimum section 2,5 dm
Circular ducts : mimimum diameter 153 mm.
1.2.3 General recommendations
A good flue should be built using materials that do not conduct much heat so that it stays hot. The casing should be such
as to limit the external surface temperature as follows :
. 50° C in living areas
. 80° C in non-living.
The flue should be completely smoketight, smooth and stable.
There should be no sudden variations in section : angle in relation to the vertical should be less than 45° .
The stake should extend at least 0,4 m from the ridge of the roof and adjacent roofs.
Two stoves should not be connected to the same flue.
Where the stove itself is installed, the flue should come down to at least 50 mm above floor level.
The inside face should be at least 16 cm away from any wood or combustible material.
The flue liners should be placed the male part down, in order to avoid runs to the outer surface.
The flue should include no more than two changes in alignment (i.e. not more than one non-vertical section).
Flue cased in brickwork :
. No angle of change of alignment should exceed 45° over a total flue height not exceeding 5 metres. For any greater
flue height, the angle of any change of alignment is limited to 20° .
Insulated metal flue :
. No angle of change of alignment should exceed 45° and height form top to bottom of any such angled section should
not exceed 5 metres. Total flue height is unrestricted.
Smoketightness, insulation, runs through ceilings and floors and safe distances to flue should be in strict compliance with
DTU 24-2-2.
1.3 - CHARACTERISTICS OF CONNECTOR FITTING BETWEEN STOVE AND FLUE
First, it is essential to install a connector between the stove and the flue. The connector should use rigid or flexible
multifuel conduit approved for direct connection to a closed source of heat.
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