本标准适用于新生产的燃气低强度红外加热器和红外辐射管加热器（见第3条，定义），以下简称加热器或装置，完全由新的、未使用的零件和材料制成，每个燃烧器的输入功率不超过40万Btu/hr（117.23 kW）:a）用于天然气；b） 用于人造气体；c） 用于混合气体；d） 用于丙烷气体；e） 用于液化石油气-空气混合物；andf）可转换，用于天然气和丙烷气，前提是提供了从一种气体到另一种气体的简单转换。本标准涵盖的加热器适用于室外空间或非住宅室内空间的安装和加热，适用于通常不存在易燃气体或蒸汽的位置。虽然本标准涵盖的加热器在某些情况下可能适用于工业过程，但本标准不包括工业过程燃烧器。

This Standard applies to newly produced, gas-fired low-intensity infrared heaters and infrared radiant tube heaters (see Clause 3, Definitions), hereinafter referred to as heaters or appliances, constructed entirely of new, unused parts and materials with inputs up to and including 400 000 Btu/hr (117.23 kW) per burner:a) for use with natural gas;b) for use with manufactured gas;c) for use with mixed gas;d) for use with propane gas;e) for use with LP gas-air mixtures; andf) convertible for use with natural gas and propane gas, when provision is made for the simple conversion from one gas to the other.The heaters covered by this Standard are intended for installation in and heating of outdoor spaces or nonresidential indoor spaces and are intended for location where flammable gases or vapors are not generally present. Although heaters covered by this Standard may, in certain instances, be suitable for application in industrial processes, this Standard does not cover industrial process burners.