Which of the following systems requires an FDNY permit?

The requirement for an FDNY permit is specifically tied to the refrigerating system. This is due to the potential hazards associated with refrigerants and the complexity involved in the installation and maintenance of these systems. The FDNY regulates refrigerating systems because they can contain materials that are flammable, toxic, or otherwise dangerous in case of leakage or improper handling. The permit ensures that safety protocols are followed, and the system is installed correctly to prevent accidents or hazards in the building.

While electrical, plumbing, and heating systems may also require permits from various departments or agencies, the specific requirement from the FDNY pertains to refrigerating systems due to the unique safety concerns they pose. Understanding these distinctions is crucial for fire and life safety directors to ensure compliance with regulations and maintain safety in their facilities.