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OPTIMAL DRAUGHT |
SHORT CHIMNEY = CHIMNEY FAN
Traditional chimney design required a minimum flue height of 4.5 m . In theory , this was enough to ensure sufficient natural flue draught to clear the products of combustion from a wood-burning stove .
Unfortunately , the chimney draught was never guaranteed and the provision often resulted in unsightly tall chimneys when appliances were installed in single-storey buildings and orangeries .
A recent change in chimney design ( see source ) states that a chimney can be designed using the calculation method in BS EN 13384-2005 which allows for the installation of shorter chimneys , provided sufficient chimney draught can be proved . A chimney fan will guarantee this chimney draught even on a shorter flue design .
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TRADITIONALLY
RECOMMENDED
HEIGHT
WITH FAN :
• SHORTER CHIMNEY
• BETTER DRAUGHT
• MORE CONTROL
• FEWER PARTICLES
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”[...] the calculation procedure within BS EN 13384-1 : 2005 can be used as the basis for deciding whether a chimney design will provide sufficient draught .” Source :
READ MORE AT Document J Building Control Combustion appliances and fuel storage systems page 30 - § 2.8 - ” Height of flues ” exodraft . co . uk OR CALL ( 0 ) 1494 465 166
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