Bilberry Stoves 8kW Stove Manual de instrucciones de instalación y funcionamiento - Página 9
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FLUES
Flues should be vertical wherever possible and where a bend is necessary, it should not make an angle of more
than 45
with the vertical. Horizontal flue runs should be avoided except in the case of a back outlet from the
o
appliance, when the length of the horizontal section should not exceed 150mm.
In order to minimise flue resistance and to make sweeping easier it is recommended to use 2 x 45
than a 90
o
bend.
The flue termination point must be located to minimise any wind effects. Wind effects of suction, pressure zones
and turbulence can be created by the roof and adjacent objects. Wind effects can also be created by natural
land contours.
To minimise the wind effects, the flue termination point should be located a minimum of 1000mm from the roof
measured vertically and 2300mm measured horizontally. Where this termination point does not suffice it may
be necessary to extend the flue pipe so that the termination point is above the apex. See Fig.4.
FLUE PIPES
A flue pipe should only be used to connect an appliance to a chimney and should not pass through any roof
space.
Flue pipes may be of any of the following materials:
(a) Cast iron as described in BS 41: 1973 (1981), or
(b) Stainless steel with a wall thickness of at least 1mm and as described in BS EN 10095:1999 Specification
for stainless and heat resisting steel plate, sheet and strip, for Grade 316 S11, 316 S13, 316 S16, 316 S31,
316 S33, or the equivalent Euronorm 88-71 designation, or
(c) Vitreous enamelled steel complying with BS 6999: 1989.
Fig.4
9
o
bends rather