3.2.6.4.

(1) The requirements of Sentences 3.2.6.2.(2) and (4), and Clause 3.2.6.2.(3)(a) are waived when a building is sprinklered and,

(a) the sprinkler system is equipped with a water flow and supervisory signal system that will,

(i) transmit automatically a waterflow signal directly to the fire department, or through an independent central station,

(ii) transmit automatically other supervisory signals to a proprietary control centre or to an independent central station, and

(iii) actuate a signal at the central alarm and control facility described in Article 3.2.6.12.,

(b) each stairway that serves storeys above the lowest exit level is vented to the outdoors at or near the bottom of the stair shaft,

(c) measures are taken to limit movement of smoke from a fire in a floor area below the lowest exit storey into upper storeys, and

(d) except for exhaust fans in kitchens, washrooms and bathrooms in dwelling units, and except for fans used for smoke venting in Article 3.2.6.10., air moving fans in a system that serves more than 2 storeys shall be designed and installed so that in the event of a fire these fans can be stopped by means of a manually operated switch at the central alarm and control facility.

(1) Manual emergency recall shall be provided for all elevators serving storeys above the first storey.

(2) Key-operated switches for emergency recall described by Sentence (1) shall be provided in a conspicuous location at,

(a) each elevator lobby on the recall level, and

(b) the central alarm and control facility required in Article 3.2.6.7.

(3) In-car emergency service switches shall be provided in all elevator cars.

(4) Keys to operate the switches required by Sentences (2) and (3) shall be,

(a) provided in a suitably identified box conspicuously located on the outside of an elevator hoistway near the central alarm and control facility required by Article 3.2.6.7., and

(b) kept at the central alarm and control facility.

(5) In a building that is not sprinklered, automatic emergency recall operation shall be provided for all elevators serving storeys above the first storey.

(6) The automatic emergency recall feature in Sentence (5) shall be actuated by,

(a) smoke detectors installed in each elevator lobby on each storey, or

(b) the building fire alarm system.

(7) Smoke detectors in Sentence (6) shall be designed as part of the building fire alarm system.