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What should be ordered to have a certified system for natural smoke and heat exhaust ventilation?

April 26, 2017certified exhaust heat natural ordered smoke system Ventilation

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What should be ordered to have a certified system for natural smoke and heat exhaust ventilation?

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• A VELUX smoke ventilation window including wind deflector which should be used when there are requirements for an aerodynamic free area OR: • A VELUX smoke ventilation window (excluding wind deflector), which should be used when there are requirements for a geometric area of ventilation AND: A VELUX control system package for simultaneous operation of up to two smoke ventilation windows