The Ontario Building Code | System Monitoring
220.127.116.11. System Monitoring
(1) An automatic sprinkler system shall be equipped with waterflow detecting devices and, if an annunciator is required by Article 18.104.22.168., shall be installed so that each device serves,
(a) not more than 1 storey, and
(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.