This revision of CAN/ULC 589 dated January 14, 2025 includes alignment of Maximum Ambient Temperature of Heat Alarms with NFPA 72: Table 7.1 and 7.2A.
1.1 These requirements cover heat-actuated, single and multiple station heat alarms intended for indoor installation in accordance with:
a) In Canada:
1) The National Building Code of Canada,
2) The National Fire Code of Canada,
b) In the United States:
3) The National Fire Alarm and Signaling Code, NFPA 72
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