scope:

1.1 These requirements cover oil-fired storage-tank water-heating appliances having a fuel input of not more than 200,000 Btu / hour (60 kW). These requirements do not apply to heaters that include storage vessels having a water capacity of more than 120 US gallons (454.2 L), or that are intended for heating water to a temperature of more than 200 °F (93 °C).

1.2 The oil-burning equipment covered by these requirements are intended for installation in accordance with the National Fire Protection Association Standard for the Installation of Oil Burning Equipment, NFPA 31, the International Mechanical Code and the Uniform Mechanical Code.