1.1这些要求包括额定电压为600 V或以下的加湿器，以及 拟按照国家电气规范使用 （NEC）、ANSI/NFPA 70和加拿大电气规范的规则 （CEC），第1部分，C22。1.1.2这些要求包括用于住宅和公共场所的加湿器 商业用途。这包括离心雾化的加湿器 类型、蒸发介质类型、注水类型、蒸汽类型和 喜欢加湿器可安装在房间内，安装在 墙壁或天花板，或用于管道或通风系统安装。 1.3这些要求适用于包括电气系统的设备 加热空气或水或两者的加热元件。1.4这些要求不适用于以下蒸发冷却器: 也用于冷却。1.5这些要求不适用于便携式电极类型 本标准涵盖的产品，如蒸发器 电加热设备，UL 499和CSA标准 家用烹饪和液体加热设备，CAN/CSA-C22。2. 64号。

1.1 These requirements cover humidifiers rated 600 V or less, and intended to be used in accordance with the National Electrical Code (NEC), ANSI/NFPA 70, and the Rules of the Canadian Electrical Code (CEC), Part 1, C22.1.1.2 These requirements cover humidifiers intended for residential and commercial use. This includes humidifiers of the centrifugal atomizing type, evaporative-media type, water-injection type, steam type, and the like. The humidifiers may be for installation in a room, mounted on a wall or a ceiling, or for duct or plenum mounting.1.3 These requirements apply to equipment that includes an electric heating element to heat air or water, or both.1.4 These requirements do not apply to evaporative coolers that are also intended to be used for cooling.1.5 These requirements do not apply to portable, electrode-type products, such as vaporizers, which are covered by the Standard for Electric Heating Appliances, UL 499, and the CSA Standard for Household Cooking and Liquid-Heating Appliances, CAN/CSA-C22.2 No. 64.