前言:这是ANSI Z83.8/CSA 2.6《气体单元加热器、气体封装加热器、气体公用事业加热器和燃气管道炉》的第六版。它取代了2013年、2009年、2006年、2002年和1996年出版的先前版本。范围:1.1本标准适用于新生产的燃气管道炉、成套加热器和输入速率高达10000000 Btu/h（2931 kW）的单元加热器，以及输入功率高达400000 Btu/h（117.2 kW）的公用事业加热器，这些加热器全部由新材料制成，未使用的零件和材料:a）用于进气压力高达5.0 psi（34.5 kPa）的天然气；输入速率超过400000 Btu/hr（117 228 kW）的单元加热器、成套加热器和带燃烧器的管道炉可能具有更高的入口压力；b） 用于液化石油气； andc）当规定从一种气体转换为另一种气体时，可转换为与天然气和液化石油气一起使用。1.2本协议中使用的术语“设备”适用于燃气管道炉、成套加热器、公用事业加热器和单元加热器。管道炉、单元加热器和机组加热器可在工厂制造为单个装置或机组系统，用于拆卸运输和重新组装以进行安装，并可与冷却装置组合。（见第3条）。1.3成品炉、单元加热器和成套加热器可在工厂制造为单个装置或成套系统，用于拆卸运输和重新组装安装，并可与冷却装置组合。（见第3条）。1.4与上述设备一起使用的器具的构造- 上述气体包含在第4.1.5条中。与上述气体一起使用的器具的性能包含在第5.1.6条中。本标准适用于第一类、第二类、第三类和第四类器具。（见第3条）。1.7本标准涵盖独立、自动控制、通风装置加热器、成套加热器、公用事业加热器和管道炉。这些设备拟安装在通常不存在易燃气体或蒸汽的位置。单元加热器、成套加热器和公用事业加热器具有完整的空气循环方式。除非用于室外安装的单元加热器拟安装在被加热的空间内。单元加热器可以是悬挂式或落地式，也可以是第3条中定义的低静压或高静压类型。 公用事业加热器可以是悬挂式或落地式，并且是第3条中定义的低静态类型。成套加热器可以是悬挂式、落地式或屋顶式，并且可以位于第3条中定义的加热空间内或外部。根据ANSI/NFPA 409《飞机库标准》进行标记和安装（如适用），这些设备适用于飞机库、停车场和修理库；b） 《停车场结构标准》，ANSI/NFPA 88A；c） 维修车库标准，ANSI/NFPA 88B；和d）天然气和丙烷安装规范CSA B149.1.1.8本标准也适用于工厂配备自动排气挡板装置（见第3条）的通风罩装置，以下简称排气挡板装置。 1.9A本标准预期的独立燃烧系统装置基本上是一种平衡烟道装置，进气口和排气口非常接近。其他设计需接受测试机构认为必要的附加测试。1.10Clause 2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。1.11如果本标准中给出的测量值后跟其他单位的等效值，则第一个规定值应视为规范。（温标和转换见附录M）。1.12附录C概述了适用于与可选列出的气体转换套件一起使用的设备的特殊构造规定。 1.13本标准还适用于新生产的自动间歇引燃点火系统（见第3条），该系统完全由新的、未使用的零件和材料制成，在现场适用于配备现有连续引燃燃烧器的单元加热器或管道炉，并且在安装在设备上时已检查和测试是否符合本标准。（见附件D）。1.14除非另有规定，否则本标准中提及的所有psi（kPa）均应视为“表压”。

Preface:This is the sixth edition of ANSI Z83.8 / CSA 2.6,Gas unit heaters, gas packaged heaters, gas utility heaters, and gas-fired duct furnaces. It supersedes the previous editions published in 2013, 2009, 2006, 2002, and 1996.Scope:1.1This Standard applies to newly produced gas fired-duct furnaces, packaged heaters, and unit heaters with input rates up to and including 10,000,000 Btu/h (2 931 kW) and utility heaters with inputs up to and including 400,000 Btu/hr (117.2 kW) constructed entirely of new, unused parts and materials:a) for use with natural gas with inlet gas pressures up to and including 5.0 psi (34.5 kPa); unit heaters, packaged heaters, and duct furnace with burners having inputs rates over 400,000 Btu/hr (117 228 kW) may have higher inlet pressures;b) for use with liquefied petroleum gases; andc) convertible for use with natural gas and liquefied petroleum gases, when provision is made for the conversion from one gas to the other.1.2The term "appliance", when used herein, applies to gas-fired duct furnaces, packaged heaters, utility heaters, and unit heaters. Duct furnaces, unit heaters, and package heaters may be factory-built as a single unit or as a package system intended to be disassembled for shipping and reassembled for installation and may be combined with a cooling unit. (See Clause 3).1.3Duct furnaces, unit heaters, and packaged heaters may be factory-built as a single unit or as a package system intended to be disassembled for shipping and reassembled for installation, and may be combined with a cooling unit. (See Clause 3).1.4The construction of appliances for use with the above-mentioned gases is covered under Clause 4.1.5The performance of appliances for use with the above-mentioned gases is covered under Clause 5.1.6This Standard applies to Category I, Category II, Category III, and Category IV Appliances. (See Clause 3).1.7This Standard covers self-contained, automatically controlled, vented unit heaters, packaged heaters, utility heaters, and duct furnaces. These appliances are intended for installation in locations where flammable gases or vapors are not generally present.Unit heaters, packaged heaters, and utility heaters have an integral means for circulation of air. Unit heaters, unless for outdoor installation are intended for installation in the space being heated. Unit heaters may be either suspended or floor-mounted and of either the low-or high-static pressure type as defined in Clause 3. Utility heaters may be suspended or floor-mounted and of the low static type as defined in Clause 3. Packaged heaters may be either suspended, floor-mounted, or roof mounted and may be located within or external to the heated space as defined in Clause 3.These appliances are suitable for use in aircraft hangars, parking structures, and repair garages when marked and installed, as applicable, in accordance with:a)Standard on Aircraft Hangars, ANSI/NFPA 409;b)Standard for Parking Structures, ANSI/NFPA 88A;c)Standard for Repair Garages, ANSI/NFPA 88B; andd)Installation Code for Natural Gas and Propane Installation Code, CSA B149.1.1.8This Standard also applies to appliances with draft hoods which are factory equipped with automatic vent damper devices (see Clause 3), hereinafter referred to as vent damper devices.1.9A separated combustion system appliance anticipated by this Standard is essentially a balanced flue appliance with the air intake and vent outlet in close proximity. Other designs are subject to such additional tests as believed necessary at the discretion of the testing agency.1.10Clause 2 contains a list of standards specifically referenced in this Standard, and sources from which these referenced standards may be obtained.1.11If 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. (See Annex M for Temperature Scales and Conversions).1.12Special construction provisions applicable to an appliance designed for use with an optional listed gas conversion kit are outlined under Annex C.1.13This Standard also applies to newly produced automatic intermittent-pilot ignition systems (see Clause 3), constructed entirely of new, unused parts and materials, to be adapted in the field to a unit heater or duct furnace equipped with an existing continuous pilot burner and which has been examined and tested for compliance with this Standard when installed on the appliance. (See Annex D).1.14All references to psi (kPa) throughout this Standard are to be considered "gauge" pressures unless otherwise specified.