Instructions for installation and use. Reproduction prohibited. 07/ 2010 version 2.0 TAM
5
2.1.2 Dimensioning
The flue must be dimensioned in compliance with the EN 13384-1
standard, using:
-
the abacuses issued by the CSTB,
-
or calculation software
-
or manufacturer’s instructions, if necessary.
2.1.3 Flue cross-section
The inside cross-section must be constant and of the same shape
throughout the height of the flue. The cross-section of the evacuation
flue must be adapted to the appliance’s power.
2.1.4 Layout
2.1.4.1 Bricked flue
The bricked flue attached must not include more than two changes in
direction, i.e. more than one non-vertical part. The angle of direction
change is normally restricted to 20°.
2.1.4.2 Metal flue
An insulated metal flue must not include more than two changes in
direction, i.e. more than one non-vertical part. The angle of direction
change is restricted to 45°. The height between the two direction
changes is restricted to five metres.
2.1.5 Flue discharge end
2.1.5.1 Stack outlet on roofing
The stack outlet must be located 0.4 metres above any part of the
building less than eight metres distant.
2.1.5.2 Stack outlet on terrace
In the case of a terrace roof or roof with a slope less than 15°, the discharge
end must be located at least 1.2 metres from the outlet on the roof covering
and 1 metre above the acroterion if this latter is more than 0.2 metres.
Note: Flues are not designed as fixing points for aerals, satellite dishes, or
any apparatus upon which wind action might destabilise the flue.
2.1.6 Crossing through floors
In all cases, it is necessary to remove any combustible materials or
materials liable to degradation under the action of temperature located at
ceiling level in the fireplace area.
In the case of bricked flues, their crossing through the ceiling above the
hood must be carried out in such a way as to ensure airtightness (shaft,
firestop plate, etc.).
In the case of metal flues, their crossing of the ceiling above the hood must
be carried out using the safety-distance plate supplied by the flue
manufacturer.
No join must be located within the floor structure. The whole outside section
of the first part of the flue must emerge in the room in which the fireplace is
located.
For the safety distance to be complied with for bricked flues, see § 2.2
For the safety distance to be complied with for metal flues, see § 2.2
