The type of refrigerant in refrigeration systems having a refrigerant circuit containing more than 220 pounds (99.8 kg) of Group A1 or 30 pounds (13.6 kg) of any other group refrigerant shall not be changed without obtaining a permit from the Building Commissioner and compliance with the applicable provisions of this article for the new refrigerant type.
(Added Coun. J. 9-14-21, p. 35949, Art. XI, § 5)