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3004.5.2 Mechanical Ventilation of the Hoistway Enclosure
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Hoistway enclosures may be mechanically vented. The system of mechanical ventilation shall be of sufficient capacity to exhaust at least 12 air changes per hour of the volume of such hoistways through a roof or an approved location on an exterior wall other than the lot line wall. Such system shall comply with the following requirements:
- The smoke detector shall be placed at the top of the hoistway and shall activate the mechanical ventilation system.
- Such mechanical ventilation system shall not pass through the overnight sleeping areas of a hotel, multiple dwelling, hospital or similar buildings.
- Such mechanical ventilation system shall be equipped with a manual shut-off in or near the elevator control panel at the designated level.
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