ISO 7240-22:2007 Fire detection and alarm systems - Part 22: Smoke-detection equipment for ducts

ISO, 2007. — 48 p. First edition 2007-05-15.
ISO 7240 (all parts) specifies components of fire detection and alarm systems, requirements for their interconnection and installation and the performance, testing, and servicing of parts or of complete systems. It provides
- local and/or remote signals to organizations having authority to respond to fire alarms, and
- signals to initiate the operation of fire protection equipment and other systems.
This part of ISO 7240 specifies requirements, test methods and performance criteria for smoke-detection equipment for ducts (s.d.e.d.) for use in fire-detection and fire alarm systems installed in buildings; see ISO 7240-1.
The s.d.e.d. samples the air from a duct and detects smoke in the sample.
NOTE 1 A common method of operation is to use differential pressure arising from airflow in the duct.
The s.d.e.d. can use smoke detectors complying with ISO 7240-7 or other detectors complying with tests specified in this part of ISO 7240.