N.Y. Comp. Codes R. & Regs. tit. 12, § 4-1.8
(a) Defective boiler.
No person shall suffer or permit a defective boiler to be operated.
(b) Excessive pressure or temperature.
No person shall suffer or permit a boiler to be operated at a pressure exceeding the maximum allowable working pressure or at a temperature exceeding the maximum allowable working temperature stated in the latest certificate of inspection.