N.Y.C. Admin. Code § 27-826: § 27-826 General requirements.

The construction and installation of gas burning equipment shall comply with the applicable requirements of article five of this subchapter and reference standards RS 14-2 and RS 14-6. The installation of gas piping shall be in accordance with the provisions of subchapter sixteen of this chapter, and for the installation of chimneys and gas vents, the provisions of subchapter fifteen of this chapter.