Subsection 1022.5 - Ventilation Equipment and ductwork for exitenclosure ventilation as permitted by Section 1022.4 shall comply with one of the following items:
1. Such equipment and ductwork shall be located exterior to the building and shall be directly connected to the exit enclosure by ductwork enclosed in construction as required for shafts.2. Where such equipment and ductwork is located within the exitenclosure, the intake air shall be taken directly from the outdoors and the exhaust air shall be discharged directly to the outdoors, or such air shall be conveyed through ducts enclosed in construction as required for shafts.3. Where located within the building, such equipment and ductwork shall be separated from the remainder of the building, including other mechanical equipment, with construction as required for shafts. In each case, openings into the fire-resistance-rated construction shall be limited to those needed for maintenance and operation and shall be protected by opening protectives in accordance with Section 715 for shaft enclosures.
Exitenclosure ventilation systems shall be independent of other building ventilation systems.