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Oil-fired boilers and their control systems shall be listed and labeled in accordance with UL 726. Electric boilers and their control systems shall be listed and labeled in accordance with UL 834. Boilers shall be designed, constructed and installed in accordance with the requirements of the ASME Code Sections I, II, IV, V and IX of the ASME Code.
Boiler external piping falls within the jurisdiction of the ASME Code and shall be ASME Code certified.