The Ontario Building Code | System Monitoring
3.2.4.17. System Monitoring
(1) An automatic sprinkler system shall be equipped with waterflow detecting devices and, if an annunciator is required by Article 3.2.4.9., shall be installed so that each device serves,
(a) not more than 1 storey, and
(b) an area on each storey that is not more than the system area limits as specified in nfpa 13, "installation of Sprinkler Systems".
(2) If a fire alarm system is provided, waterflow indicating devices required by Sentence (1) shall be connected to the fire alarm system so that on actuation an alert signal or an alarm signal is initiated.
In Plain Language
This clause sets fire alarm and voice communication requirements for high buildings, generally requiring a voice communication system so instructions (like directing a phased evacuation) can be given directly rather than relying on a simple alarm tone alone.
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.