204.0 – B –

Backflow. The flow of water or other liquids, mixtures, or substances into the distributing pipes of a potable supply of water from sources other than its intended source.

Baffle Plate. An object placed in or near an appliance to change the direction or retard the flow of air, air-fuel mixtures, or flue gases. [NFPA 96:3.3.8]

Boiler. A closed vessel used for heating water or liquid, or for generating steam or vapor by direct application of heat from combustible fuels or electricity.

Boiler, Automatic. A boiler equipped with certain controls and limit devices.

Boiler, High-Pressure. A boiler for generating steam at gauge pressures in excess of 15 psig (103 kPa), or for heating water to a temperature in excess of 250°F (121°C) or at a gauge pressure in excess of 160 psig (gauge pressure of 1103 kPa). [NFPA 211:3.3.14.2]

Boiler, Hot-Water-Heating. A boiler having a volume exceeding 120 gallons (454 L), a heat input exceeding

DEFINITIONS

Building . [HCD 1 & HCD 2] Any structure used or intended for supporting or sheltering any use or occupancy.

Exceptions: “Building” shall not include the following:

(1) Any mobilehome as defined in Health and Safety Code Sec- tion 18008.

(2) Any manufactured home as defined in Health and Safety Code Section 18007.

(3) Any commercial modular as defined in Health and Safety Code Section 18001.8 or any special purpose commercial modular as defined in Health and Safety Code Section 18012.5.

(4) Any recreational vehicle as defined in Health and Safety Code Section 18010.

(5) Any multifamily manufactured home, as defined in Health and Safety Code Section 18008.7.

For additional information, see Health and Safety Code Sec- tion 18908.

Building Code. The building code that is adopted by this jurisdiction. [HCD 1, HCD 2, OSHPD 1, 1R, 2, 3, 4, 5, 6 & SFM] “Building Code” shall mean the California Build- ing Code, Title 24, Part 2. Building Official. See Authority Having Jurisdiction. For applications listed in Section 1.11.0 regulated by the Office of the State Fire Marshal “Building Official” is the officer charged with the administration and enforcement of this code, or a reg- ular deputy. See “Enforcing Agency.” For the State of Califor- nia, “Building Official” shall be the “Enforcing Agency” as specified in Section 1.11.0.

Burner, Automatic Boiler. A device to convey fuel into the combustion chamber in proximity to its combustion air supply so as to permit a stable, controlled heat release compatible with the burner design and that is equipped with an ignition system to reliably ignite the entire heat release surface of the burner assembly.