7.3.6.6.Final Tests

(1)   Where a final test is made,
     (a)   every trap shall be filled with water,
     (b)   the bottom of the system being tested shall terminate at the building trap, test plug or cap,
     (c)   except as provided in Sentence (2), smoke from smoke-generating machines shall be forced into the system,
     (d)   when the smoke appears from all roof terminals they shall be closed, and
     (e)   a pressure equivalent to a 25 mm water column shall be maintained for 15 min without the addition of more smoke.

     (2) The smoke referred to in Clauses (1)(c) and (d) is permitted to be omitted provided the roof terminals are closed and
     the system is subjected to an air pressure equivalent to a 25 mm water column maintained for 15 min without the addition
     of more air.

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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.