N.Y.C. Admin. Code § 27-835: § 27-835 Permitted types of incinerators.

When permitted by sections 24-118 and 24-119 of title twenty-four of the administrative code, incinerators shall conform to the following:

(a) Semiautomatic incinerators. Semiautomatic incinerators shall be limited to capacities not exceeding one million seven hundred thousand Btu/hr. in other buildings. Semiautomatic incinerators may have manually operated grates, but shall have automatically operated flue gates, gas or oil burners with temperature controls, overfire air fans and nozzle system, emission control devices, and clock controlled cycles.

(b) Automatic incinerators. Automatic incinerators shall be required for capacities exceeding one million seven hundred thousand. They are optional for smaller capacities. Automatic incinerators shall have power operated grates, and automatically operated flue gates, gas or oil burners with temperature controls, overfire and underfire air fans and nozzle system, emission control devices and clock controlled cycles.