3.2.8.7. Mechanical Exhaust System

(1)

A mechanical exhaust system shall be provided to remove air from an interconnected floor space at a rate of 4 air changes per hour.

(See Note A-3.2.8.7.(1))

(2)

The mechanical exhaust system required by Sentence (1) shall be actuated by a switch located on the storey containing the entrance for firefighter access referred to in Articles 3.2.5.4. and 3.2.5.5. near the annunciator for the fire alarm system.