9.10.18.3.

(1) Where a fire alarm system is required, every public corridor in buildings of residential occupancy and every exit stair shaft shall be provided with smoke detectors.

(2) Except as provided in Sentence (3), buildings required to have a fire alarm system shall be equipped with heat detectors or smoke detectors in storage rooms, service rooms, elevator shafts, chutes, janitors closets and any other rooms where hazardous substances are intended to be used or stored.

(3) Except as required in Sentence (4), heat detectors and smoke detectors described in Sentence (2), are not required in dwelling units or in sprinklered buildings in which the sprinkler system is electrically supervised and equipped with a water flow alarm.

(4) Where a fire alarm system is required in a hotel, heat detectors shall be installed in every room in a suite and in every room not located in a suite in a floor area containing a hotel other than washrooms within a suite, saunas, refrigerated areas and swimming pools.