www. exodraft. co. uk |
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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