ORR Partners Detection Systems with DDA measures for the hearing impaired

This document seeks to consider the design changes necessary for additional facilities to provide occupant warning for the deaf and hearing impaired. It looks at the typical system designs used in residential applications, both within sole occupancy units as well as the common usage areas within the building. The design considerations are based on the Deemed-to-Satisfy provisions contained in the NCC, Volume One Part E2 Smoke Hazard Management.

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