这是一个可搜索的PDF。1.1范围1。1.1本标准适用于输入额定值超过75000 Btu/h（21 980 W）的新生产大型自动储水式热水器、瞬时热水器和循环热水器（见第四部分，定义），以下简称热水器或器具，完全由新的、未使用的部件和材料制成:（a）用于天然气；（b） 用于人造气体；（c） 用于混合气体；（d） 用于液化石油气；和（e）用于液化石油气-空气混合物。（f） 仅用于液化石油气的休闲车安装（见1.2.26）；（g） 对于可转换为天然气和液化石油气的人造住宅（移动式住宅）安装，如果规定了从一种气体到另一种气体的简单转换（见1）。 2.25); 以及（h）对于可转换为天然气和液化石油气的休闲车安装，如果规定了从一种气体到另一种气体的简单转换（见1.2.26）。这些要求也适用于与饮用水/空间供暖应用组合使用的自动存储式热水器。第一卷第1.1.1.2节涵盖了输入额定值为75000 Btu/h（21 980 W）或以下的自动储水式热水器。本标准预期的直接排气式热水器基本上是平衡的烟道装置，进气口和排气口非常接近。其他设计应接受测试机构认为必要的附加测试。1.1.3安装在休闲车上的热水器应为直接通风式。 1.1.4本标准还适用于带通风罩的热水器，该热水器在工厂配备了自动通风挡板装置（见第四部分，定义），以下简称通风挡板装置。1.1.5本标准也适用于除直接通风型以外的热水器，该热水器在工厂配备了电动或机械驱动的自动烟道挡板装置（见第四部分，定义），以下简称烟道挡板装置。1.1.6如果本标准中给出的测量值之后是其他单位的等效值，则第一个规定值应视为规范，除非1.30.1和1.31.1.1.7中另有说明，否则本标准中提及的所有psi均应视为表压，除非另有规定。 1.1.8附件D包含美国独有的条款。1.1.9附件E包含加拿大独有的条款。1.1.10附件F（列出的电器转换套件的可选规定）概述了适用于设计用于可选列出的转换套件的热水器的特殊构造规定。1.1.11附件G包含本标准中特别引用的标准列表，以及这些引用标准的来源。

This is a searchable PDF.1.1Scope1.1.1This standard applies to newly produced, large automatic storage water heaters having input ratings above 75,000 Btu per hour (21 980 W), instantaneous water heaters and circulating water heaters (see Part IV, Definitions), hereinafter referred to as water heaters or appliances, constructed entirely of new, unused parts and materials:(a) For use with natural gas; (b) For use with manufactured gas; (c) For use with mixed gas; (d) For use with liquefied petroleum gases; and (e) For use with LP gas-air mixtures. (f) For recreational vehicle installation for use with liquefied petroleum gases only (see 1.2.26); (g) For manufactured home (mobile home) installation convertible for use with natural gas and liquefied petroleum gases when provision is made for the simple conversion from one gas to the other (see 1.2.25); and (h) For recreational vehicle installation convertible for use with natural gas and liquefied petroleum gases when provision is made fo r the simple conversion from one gas to the other (see 1.2.26).These requirements also apply to automatic storage type water heaters for use with combination potable water/space heating applications.Automatic storage water heaters having input ratings of 75,000 Btu per hour (21 980 W) or less are covered in Volume I.1.1.2Direct vent water heaters anticipated by this standard are essentially balanced flue appliances with the air intake and vent outlet in close proximity. Other designs shall be subjected to such additional tests as believed necessary at the discretion of the testing agency.1.1.3Water heaters for installation in recreational vehicles shall be of the direct vent type.1.1.4This standard also applies to water heaters with draft hoods which are factory equipped with automatic vent damper devices (see Part IV, Definitions), hereinafter referred to as vent damper devices.1.1.5This standard also applies to water heaters of other than the direct vent type which are factory equipped with electrically operated or mechanically actuated automatic flue damper devices (see Part IV, Definitions), hereinafter referred to as flue damper devices.1.1.6If a value for measurement as given in this standard is followed by an equivalent value in other units, the first stated value is to be regarded as the specification, except as noted in 1.30.1 and 1.31.1.1.1.7All references to psi throughout this standard are to be considered gauge pressures unless otherwise specified.1.1.8Exhibit D contains provisions that are unique to the United States.1.1.9Exhibit E contains provisions that are unique to Canada.1.1.10Special construction provisions applicable to a water heater designed for use with an optional listed conversion kit are outlined under Exhibit F (Optional Provisions of Listed Appliance Conversion Kits).1.1.11Exhibit G contains a list of standards specifically referenced in this standard, and sources from which these refere nce standards may be obtained.