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Return Air Detector ("RAD")

Return Air Detector ("RAD")

A return-air detector ("RAD") or return-air smoke detector is a smoke detector mounted in the path of return air, either within a duct or plenum (including a ceiling cavity) forming part of the zone smoke control system in fire mode. The location of a return-air detector shall be mounted taking into consideration the flow of smoke and dilution. The requirements and use of a return air detector is covered by Australian Standards AS 1668 and AS 1670.

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    In preparing this definition, we have drawn from various sources including Legislation, Codes, Standards and industry information, research and knowledge.  Like the english language, these definitions may subtly change from time to time. As such these definitions are provided solely on the basis that users will be responsible for making their own assessment of the definition and and are advised to verify all relevant representations, statements and information.