序言这是CSA C22的第九版。2第46号，电空气加热器，CSA集团根据《加拿大电气规范》第二部分发布的一系列标准之一。它取代了1988年、1981年、1980年、1971年、1966年、1959年、1942年和1938年出版的以前版本。本版本主要用于纳入1988年版的更新1至4，修改范围以澄清本标准未涵盖的产品，并更新参考出版物。有关《加拿大电气规范》第二部分标准的一般信息，请参见CAN/CSA-C22的前言。2号，0号。本标准适用于本标准规定范围内的合格评定。范围1。1本标准适用于额定系统电压为600 V或以下的空气加热器，其设计应符合加拿大电气规范第一部分的要求。 1.2本标准适用于非危险场所的家用、商用和工业用永久连接和线连接空气加热器。1.3术语“空气加热器”包括以下类型:（a）对流；（b） 强制通风；（c） 辐射；（d） 天花板类型，单独或与照明或通风组件组合，或两者兼有；（e） 充液散热器；和（f）（a）、（b）或（c）的组合。注:为方便起见，除非有必要进行区分，本标准中的便携式和固定式空气加热器均称为“加热器”。1.4本标准不适用于（a）仅涉及使用电动空气循环器进行蒸汽或热水加热的单元加热器；（b） CSA C22中所述的电气管道加热器。2第155号；（c） 中央电暖风炉，如CSA C22所述。2第236号；（d）辐射空间- 安装在底层地板下方的加热板（i）；（ii）安装在干墙后面或石膏天花板上方；（iii）安装在吊顶格栅系统上方；（iv）构成完工天花板系统的全部或部分；（v）以最终完成的形式落入天花板系统。本标准第8条规定了电线连接双绝缘电空气加热器的要求。1.5在本标准中，“应”用于表示要求，即用户为遵守本标准而有义务满足的规定；“应该”用于表示建议或建议但不需要的建议；“可”用于表示一个选项或在标准范围内允许的选项。注释随附条款不包括要求或替代要求；随附条款的注释的目的是将解释性或信息性材料与文本分开。 表和图的注释被视为表或图的一部分，可以作为要求编写。附件被指定为规范性（强制性）或信息性（非强制性）来定义其应用。

PrefaceThis is the ninth edition of CSA C22.2 No. 46, Electric air heaters, one of a series of Standards issued by CSA Group under Part II of the Canadian Electrical Code. It supersedes previous editions published in 1988, 1981, 1980, 1971, 1966, 1959, 1942, and 1938. This edition mainly serves to incorporate Updates 1 through 4 of the 1988 edition, modify the scope to clarify the products not covered by this Standard, and to update the reference publications. For general information on the Standards of the Canadian Electrical Code, Part II, see the preface of CAN/CSA-C22.2 No. 0. This Standard is considered suitable for use for conformity assessment within the stated scope of the Standard.Scope1.1 This Standard applies to air heaters intended for use on nominal system voltages of 600 V or less and designed to be used in accordance with the Canadian Electrical Code, Part I. 1.2 This Standard applies to permanently connected and cord-connected air heaters for household, commercial, and industrial use in non-hazardous locations. 1.3 The term "air heater" includes the following types: (a) convection; (b) forced air; (c) radiation; (d) ceiling types, alone or in combination with lighting or ventilating components, or both; (e) liquid-filled radiator; and (f) combinations of (a), (b), or (c). Note: For convenience, except where distinctions are necessary, portable and stationary air heaters are referred to throughout this Standard as "heaters". 1.4 This Standard does not apply to (a) unit heaters involving only steam or hot-water heating with an electric air circulator; (b) electric duct heaters, as covered in CSA C22.2 No. 155; (c) central electric warm-air furnaces, as covered in CSA C22.2 No. 236; and (d) radiant space-heating panels    (i) installed below the subfloor;    (ii) mounted behind drywall or above plaster ceilings;    (iii) mounted above a suspended ceiling grid system;    (iv) forming all or part of a finished ceiling system; and    (v) dropped into a ceiling system in its final finished form. Requirements for cord-connected double-insulated electric air heaters are specified in Clause 8 of this Standard. 1.5 In this Standard, "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.