1. SCOPE 1.1 This Standard sets forth requirements for ionization-type and
photoelectric-type detectors, rated at 300 V or less, to be employed in
ordinary indoor locations in accordance with the following: A Standard for the Installation of Fire Alarm Systems, CAN/ULC-S524M; B Standards of the National Fire Protection Association: No. 71, Central Station Signaling Systems;
No. 72B, Auxiliary Protective Signaling Systems;
No. 72C, Remote Station Protective Signaling Systems;
No. 72D, Proprietary Protective Signaling Systems;
No. 74 Household Fire Warning Equipment. 1.2 A smoke detector (e.g. ionization-type, photoelectric-type and the like) as
covered by this Standard consists of an assembly of electrical components
arranged to detect one or more products of combustion. The products of
combustion may consist of gases, water vapor, and visible as well as invisible
smoke particles. The detector includes provision for the connection to a
source of power, signalling, and optional remote control circuits. 1.3 This Standard covers the following types of detectors: A Detectors intended for open area protection, for connection to
compatible control unit for operation as part of a fire alarm system; B Detectors intended solely for control of releasing devices such as
electromagnetic door holders, fire dampers, etc; C Detectors suitable for the uses in Items A and B above; and D Duct detectors. 1.4 This Standard does not cover the following: A Detectors for monitoring the smoke density within flues or stacks; B Power supplies and control units to which the detectors are intended
to be connected. These are covered under the Standard for Control
Units for Fire Alarm Systems, CAN/ULC-S527M. 1.5 The manufacture, importation, distribution, and disposal of smoke
detectors containing radioactive material are subject to the safety
requirements of the Atomic Energy Control Board of Canada. 1.6 Verification of the acceptance of such detectors by the regulating agency
involved is required prior to the investigation of the detector to establish
compliance with the requirements of this Standard.