N.Y.C. Admin. Code § 27-997: § 27-997 Acceptance tests.

No new, relocated or altered equipment shall be placed in operation until it has been tested and an equipment use permit has been issued by the commissioner. Such tests shall be made as required in section 27-999 of this article and shall be conducted by the person or firm installing, relocating or altering the equipment and shall be witnessed by a representative of the commissioner.