Scope 1.1 This Standard applies to oil burners of the atomizing type, irrespective of size, firing rate, or grade of fuel oil, that are designed primarily for installation in warm-air, hot-water, and steam-heating equipment as classified in CSA B140.0. 1.2 This Standard may also be applied to atomizing-type oil burners intended for installation in appliances such as ovens, heaters, ranges, and special furnaces. 1.3 This Standard applies to certain components and accessories (e.g., fuel units and combustion safety controls) for atomizing-type oil burners. 1.4 This Standard does not apply to complete oil-fired units, except where atomizing-type burners are integral to the units. 1.5 In CSA standards, "shall" is used to express a requirement, i.e., a provision that the user is obliged to satisfy in order to comply with the standard; "should" is used to express a recommendation or that which is advised but not required; and "may" is used to express an option or that which is permissible within the limits of the standard. Notes accompanying clauses do not include requirements or alternative requirements; the purpose of a note accompanying a clause is to separate from the text explanatory or informative material. Notes to tables and figures are considered part of the table or figure and may be written as requirements. Annexes are designated normative (mandatory) or informative (nonmandatory) to define their application. 1.6 The values given in SI units are the units of record for the purposes of this Standard. The values given in parentheses are for information and comparison only.