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Fire Systems & Velux Windows
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<blockquote data-quote="Chewbacca" data-source="post: 329659" data-attributes="member: 22630"><p>ventilating smoke on stairwells prevents flashbacks from fire, but more importantly keeps stairwell clear of smoke aiding escape and fire brigade entry. If stairwell is designed properly, then it will have fire doors at every entry point, ergo chimney effect is actually used to improve safety not propogate fire, which is the whole point of these vent systems.</p><p></p><p>In answer to the question the window will need an opening system, sometimes this is a motorised chain, sometimes a spring held by an eletro-magnet, either way it needs a controlled electric supply</p></blockquote><p></p>
[QUOTE="Chewbacca, post: 329659, member: 22630"] ventilating smoke on stairwells prevents flashbacks from fire, but more importantly keeps stairwell clear of smoke aiding escape and fire brigade entry. If stairwell is designed properly, then it will have fire doors at every entry point, ergo chimney effect is actually used to improve safety not propogate fire, which is the whole point of these vent systems. In answer to the question the window will need an opening system, sometimes this is a motorised chain, sometimes a spring held by an eletro-magnet, either way it needs a controlled electric supply [/QUOTE]
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