Specification History

SWS Version Created Specification ID Title Specification Objective Supporting Materials Rationale Status
Version 2020 14/08/2020 - 14:27 6.0304.1c Backdraft prevention

System must contain a backdraft damper between all exterior terminations/intakes that only allows air flow in the desired direction

A system of one or more backdraft dampers shall be installed to isolate each dwelling unit from the common duct when the system is not operating

Prevent unwanted air movement

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Version 2020 14/08/2020 - 14:27 6.0304.1c Backdraft prevention

System must contain a backdraft damper between all exterior terminations/intakes that only allows air flow in the desired direction

A system of one or more backdraft dampers shall be installed to isolate each dwelling unit from the common duct when the system is not operating

Prevent unwanted air movement

Black Line