The Ontario Building Code | Installation and Conformance to Standards
6.2.12.3. installation and Conformance to Standards
(1) The carbon monoxide alarms required by Article 6.2.12.2. shall,
(a) except as permitted in Sentence (2), be permanently connected to an electrical circuit and shall have no disconnect switch between the overcurrent device and the carbon monoxide alarm,
(b) be wireref ="http://thehandyforce.com/electrical/" title ="Electricians in East York">wired so that its activation will activate all carbon monoxide alarms within the suite, where located within a suite of residential occupancy,
(c) be equipped with an alarm that is audible within bedrooms when the intervening doors are closed, where located in a suite of residential occupancy, and
(d) conform to,
(i) CAN/CSA-6.19, "residential Carbon Monoxide Alarming Devices", or
(ii) UL 2034, "Single and Multiple Station Carbon Monoxide Alarms".
(2) Where the building is not supplied with electrical power, carbon monoxide alarms are permitted to be battery operated.
6.2.13. ventilation for Laboratories
In Plain Language
Carbon monoxide alarms required under this Subsection must be installed and must conform to recognized product standards, ensuring the devices actually provide reliable detection when properly installed.
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.