N.Y.C. Admin. Code § 28-315.8.3: § 28-315.8.3 Connections for temporary external boilers and chillers.

For buildings whose main use or dominant occupancy is group I-2 hospital and that are located in a flood hazard area, as such term is defined in appendix G of the New York city building code, the provision of connections for temporary external boilers and chillers in accordance with the retroactive requirements of section G312.3 of appendix G of the New York city building code shall be completed by January 1, 2033, and a report detailing compliance with such requirements shall be filed with the department in accordance with section G312.3.2 of such appendix by such date.