(A) Listings. Carbon monoxide alarms shall be listed in accordance with UL 2034. Combination carbon monoxide and smoke alarms shall be listed in accordance with UL 2034 and UL 217.
(B) Where required. Carbon monoxide alarms shall be provided as follows.
(1) New construction. For new construction, carbon monoxide alarms shall be provided in dwelling units where either or both of the following conditions exist:
(a) The dwelling unit contains a fuel-fired appliance or fireplace; and/or
(b) The dwelling unit has an attached garage with an opening that communicates with the dwelling unit.
(2) Alterations, repairs and additions.
(a) General requirement. Where alterations, repairs or additions requiring a building permit occur, or where one or more sleeping rooms are added or created in existing dwellings, or where fuel-fired appliances or fireplaces are added or replaced, the individual dwelling unit shall be equipped with carbon monoxide alarms located as required for new dwellings.
(b) Exception. Work involving the exterior surfaces of dwellings, such as the replacement of roofing or siding, or the addition or replacement of windows or doors, or the addition of a porch or deck, or the installation of a fuel-fired appliance that cannot introduce carbon monoxide to the interior of the dwelling, is exempt from the requirements of this section.
(3) Location. Carbon monoxide alarms in dwelling units shall be installed outside of each separate sleeping area in the immediate vicinity of the bedrooms. Where a fuel-burning appliance is located within a bedroom or its attached bathroom, a carbon monoxide alarm shall be installed within the bedroom.
(C) Combination alarms. Combination carbon monoxide and smoke alarms shall be permitted to be used in lieu of carbon monoxide alarms.
(D) Power source.
(1) General requirements. Carbon monoxide alarms shall receive their primary power from the building wiring where such wiring is served from a commercial source and, where primary power is interrupted, shall receive power from a battery. Wiring shall be permanent and without a disconnecting switch other than that required for overcurrent protection.
(2) Exceptions.
(a) Carbon monoxide alarms shall be permitted to be battery-operated where installed in buildings without commercial power.
(b) Carbon monoxide alarms installed in accordance with § 150.17(B)(2) shall be permitted to be battery-powered.
(E) Carbon monoxide detection systems. Carbon monoxide detection systems shall be permitted to be used in lieu of carbon monoxide alarms as follows.
(1) General. Household carbon monoxide detection systems shall comply with NFPA 720. Carbon monoxide detectors shall be listed in accordance with UL 2075.
(2) Location. Carbon monoxide detectors shall be installed in the locations specified. These locations supersede the locations specified in NFPA 720.
(3) Permanent fixture. Where a household carbon monoxide detection system is installed, it shall become a permanent fixture of the occupancy and owned by the homeowner.
(4) Combination detectors. Combination carbon monoxide and smoke detectors shall be permitted to be installed in carbon monoxide detection systems in lieu of carbon monoxide detectors, provided that they are listed in accordance with UL 2075 and UL 268.
(Ord. 2019-08-01, passed 9-9-19)