Code Library › Volume 1 › Section 3.6 — Service Facilities
PART 3 — FIRE PROTECTION, OCCUPANT SAFETY AND ACCESSIBILITYUpdated for the 2024 Ontario Building Code

3.6.1.5.Appliances Installed Outside a Building

(1) A fuel-fired appliance installed on the roof of a building or in another location outside the building shall be installed not less than (a) 1.2 m from a property line, measured horizontally, and (b) 3 m from an adjacent wall of the same building if that wall contains any opening within 3 storeys above and 5 m horizontally from the appliance, unless every opening within these limits is protected by (i) a closure having a fire-protection rating not less than 45 min determined in accordance with Article 3.1.8.4., or (ii) a wired glass assembly permitted for use in a vertical fire separation and described in Article 2.3.15. of MMAH Supplementary Standard SB-2, “Fire Performance Ratings.”
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Code text is reproduced for reference from the Ontario Building Code (O. Reg. 163/24, 2024 Building Code Compendium). This page is provided for general information and is not an official copy. Always verify requirements against the official Ontario Building Code and confirm with your local building department.