N.Y.C. Admin. Code § 27-797: § 27-797 Certificates.

No oil burning equipment hereafter installed shall be operated until an equipment use permit has been issued by the commissioner, the requirements of the air pollution control code have been met as provided in section 27-799 of article four of this subchapter, and until approval for the storage of fuel oil has been given by the fire commissioner, except that temporary operation may be permitted as provided in section 27-188 of article eighteen of subchapter one of this chapter.

(a) Every oil burning installation that is not fully automatic or requires preheating shall be operated by, or under, the direct supervision of a person holding a certificate of fitness issued by the fire commissioner. Such person shall be in the building at all times while the burners are in operation, and shall be present in the boiler room during the starting of the operation of a boiler.