N.Y.C. Admin. Code § 27-771: § 27-771 Scope.

This subchapter shall establish the minimum safety requirements for, and control the design, construction, installation, alteration and use of, systems for providing mechanical ventilation, air conditioning, air cooling, air heating and refrigeration. In addition, within special flood hazard areas, and below the regulatory flood datum, as described in article ten of subchapter four of this chapter, mechanical ventilation, air conditioning and refrigeration systems and related equipment shall meet the requirements of the applicable provisions of reference standard RS 4-5.