Description | New standard
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Where CAV or VAV
systems are present, the existing ductwork can be used to contain
the smoke outside while smoke dampers close to prevent the
contamination of other zones. Air
handling unit fans are shut off and the smoke dampers can be opened
or closed to channel the smoke-filled air to the outside.
smoke extract systems use separate dedicated fans and a damper
system to remove smoke from the building. The smoke extraction fans
are dedicated for smoke removal and are activated once the fire
alarm system detects the presence of smoke or fire in the building.
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