Fire detection and fire alarm devices for dwellings - Specification for multi-sensor fire alarms using any combination of smoke, heat and carbon monoxide sensors

Fire detection and fire alarm devices for dwellings - Specification for multi-sensor fire alarms using any combination of smoke, heat and carbon monoxide sensors

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1   Scope

This part of BS 5446 specifies requirements and type test methods for multi-sensor fire alarms, using one of the following combinations of sensors:
  1. a) smoke and heat;
  2. b) smoke and carbon monoxide;
  3. c) carbon monoxide and heat; and
  4. d) smoke, carbon monoxide and heat.
It is applicable to multi-sensor fire alarms intended solely for permanent installation on ceilings or walls of dwellings, and to multi-sensor fire alarms suitable for use in leisure accommodation vehicles (LAVs).
It is not applicable to multi-sensor fire alarms incorporating ionization smoke sensors.

NOTE 1 Equipment conforming to this part of BS 5446 might not be suitable for use in boats used as a means of accommodation on inland waterways, due to the corrosive atmosphere.

NOTE 2 Although not covered by this part of BS 5446, equipment is available for use with multi-sensor fire alarms to provide a suitable warning system for use by deaf and hard of hearing people (see BS 5446‑3).

NOTE 3 This part of BS 5446 does not cover the requirements for devices intended for incorporation in fire detection and alarm systems (see BS EN 54‑1).

NOTE 4 This part of BS 5446 does not include detection of carbon monoxide as a toxic gas (see BS EN 50291‑1).

NOTE 5 This part of BS 5446 does not include detection of fire using heat only (see BS 5446‑2).