Notice: This site currently shows the 2012/2017 edition of the Ontario Building Code. The current legally effective code is the 2024 edition (O.Reg. 163/24), in effect since January 1, 2025. Confirm current requirements at ontario.ca.
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The Ontario Building Code | Design and Installation Requirements

9.10.18.3. design and installation Requirements

(1) Except as provided in Sentence (2), fire alarm, fire detection and smoke detection devices and systems, and their installation, shall conform to Subsection 3.2.4. and Articles 3.2.7.8. and 3.2.7.10.

(2) Articles 3.2.4.1., 3.2.4.11., 3.2.4.12., 3.2.4.13., 3.2.4.14., 3.2.4.22. and 3.2.4.23. do not apply to Part 9 buildings.

In Plain Language

Fire alarm systems must be designed and installed per the requirements set out in this article, ensuring the system reliably detects and signals a fire.

This is a plain-language summary of the 2012/2017 Ontario Building Code text above, for general understanding only and not a substitute for the Code. Always confirm current requirements against the 2024 edition (O.Reg. 163/24) or a qualified professional before construction.