The following documents are incorporated by reference to the extent that they are referenced in this chapter: ASME 2019 Boiler and Pressure Vessel Code, an International Code; and National Board Inspection Code — NBIC, 2019 Edition. The following documents are incorporated by reference in their entirety: ASME B31.1 — 2018 Edition, Power Piping (American Society of Mechanical Engineers); ASME B31.3 — 2018 Edition, Process Piping (American Society of Mechanical Engineers); ASME CSD-1 — 2018 Edition, Controls and Safety Devices for Automatically Fired Boilers (American Society of Mechanical Engineers) as amended in §C of this regulation; and NFPA 85, Boiler and Combustion Systems Hazards Code — 2019 Edition (National Fire Protection Association). Controls and Safety Devices for Automatically Fired Boilers (CSD-1) (American Society of Mechanical Engineers). The requirements of ASME CSD-1 in effect at the time a boiler is installed apply to: Power boilers regardless of fuel input; Other boilers with a fuel input of greater than 2,500,000 Btu per hour and less than 12,500,000 Btu per hour; and Other boilers with a fuel input of 2,500,000 Btu per hour or less, except that Section CF of CSD-1 does not apply to these boilers. The following are exempt from the requirements of ASME CSD-1: Water heaters stamped either “H” or “HLW” and used as potable water heaters, if the water temperature is less than 210°F and the water pressure is less than 160 PSIG; Miniature boilers, except as required in Regulation .37 of this chapter; Kitchen equipment boilers, except as required in Regulation .38 of this chapter; and Historical boilers.