The
Anti-Downdraught Cowl elimin- ates down draughts in all weather
conditions. Even if the wind is blowing vertically down, the cowl
will convert that energy into a positive up draught. Pilot lights
that extinguish themselves, due to down draught will keep alight.
The Cowl is non-directional and therefore does not have to be fitted
facing in any particular direction, and it has no moving parts that
can seize up. Rain, snow and birds are prevented from entering the
chimney.
The design, which has been proven over many years, ensures that
the cowl will continue to ventilate the chimney when the fire or
appliance is unlit.
The Anti-Downdraught Cowl is manufactured in 0.5mm 430 grade stainless
steel for use with Gas, or in .8mm 316 grade stainless steel for
the greater corrosion resistance required with solid fuel and oil,
it is available in 100mm to 300mm diameters.
Fitting is simple, the stem of the cowl is slightly undersize so
that it can slide down inside the bore of most prefabricated metal
chimneys, liners or conventional brick chimneys. This joint should
be sealed.
Please ensure that the fire/appliance has enough combustion air
to operate correctly. Many combustion air problems are caused by
excessive draught proofing which can deprive the fire of the oxygen
it requires to burn efficiently.
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