序言这是ANSI Z21的第六版。86/CSA 2.32，通风燃气空间供暖设备。它取代了2008年、2004年、2000年和1998年出版的之前版本。范围1。1本标准适用于新生产的通风燃气空间供暖设备（见第3条，定义），以下简称设备，完全由新的、未使用的零件和材料制成，输入额定值高达400000 Btu/hr（117 228 W）。这些设备用于:a）天然气；b） 人工煤气；c） 混合气体；d） 丙烷气[另见第5.2（e）条]；和e）液化石油气-空气混合物。与上述设备一起使用的通风燃气空间供暖设备的建造- 上述气体包含在第4条中。第5条涵盖了与上述气体一起使用的通风燃气空间供暖设备的性能。1.2本标准仅适用于第3条定义中定义的以下设备类型:a）重力通风壁炉；b） 扇形通风壁炉；c） 带冷却装置的风扇式通风壁炉；d） 通风式房间加热器；e） 重力式直接通风壁炉；f） 风机式直接通风壁炉；和g）地板炉。1.3本标准仅适用于美国1975年《能源政策和节约法案》和1978年《国家能源节约政策法案》*未对其进行规定，或加拿大第18条《加拿大独有项目》未对其进行规定的电器的热效率和相关标记。 *在本次印刷时，上述法案规定了通风设备的热效率（加热能力）。有关信息，请联系美国能源、节能和太阳能应用部消费品效率处，地址:华盛顿特区西北马萨诸塞大道20号，邮编20545。1.4如果本标准中所示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值。1.5除非另有规定，否则本标准中提及的所有psi均应视为表压。1.6所有通风式燃气空间供暖设备均符合第4条和第5条的适用要求。 此外，有关产品类型的具体要求，请参见:a）第6条，通风房间加热器结构，第7条，通风房间加热器性能；b） 第8条，重力式和风扇式直接通风壁炉施工，第9条，重力式和风扇式直接通风壁炉性能；c） 第10条，重力式和风扇式壁炉施工，第11条，重力式和风扇式壁炉性能；d） 第12条，重力式和风扇式地板炉施工（仅限美国），第13条，重力式和风扇式地板炉性能（仅限美国）；和e）第14条，通风冷凝式燃气空间供暖设备施工，第15条，通风冷凝式燃气- 燃烧式空间供暖设备的性能。1.7第17条美国独有的条款包含美国独有的条款。1.8第18条加拿大独有的条款包含加拿大独有的条款。1.9适用于设计用于可选设计认证转换套件的通风式空间供暖设备的特殊构造条款在附录H“列出的燃气设备转换套件（可选）”中概述。1.10第2条包含本标准中具体引用的标准清单，以及这些引用标准的来源。1.11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 sixth edition of ANSI Z21.86/CSA 2.32, Vented Gas-Fired Space Heating Appliances. It supersedes the previous editions published in 2008, 2004, 2000, and 1998.Scope1.1 This Standard applies to newly produced vented gas-fired space heating appliances (see Clause 3, Definitions), hereinafter referred to as appliance(s), constructed entirely of new, unused parts and materials, and having input ratings up to and including 400,000 Btu/hr (117 228 W). These appliances are for use with: a) natural gas; b) manufactured gas; c) mixed gas; d) propane gas [also see Clause 5.2(e)]; and e) LP gas-air mixtures. The construction of vented gas-fired space heating appliances for use with the above-mentioned gases is covered in Clause 4. The performance of vented gas-fired space heating appliances for use with the above-mentioned gases is covered in Clause 5. 1.2 This Standard applies only to the following appliance types, as defined in Clause 3, Definitions: a) gravity vented wall furnace; b) fan-type vented wall furnace; c) fan-type vented wall furnace with cooling unit; d) vented room heater; e) gravity direct vent wall furnace; f) fan-type direct vent wall furnace; and g) floor furnace. 1.3 This Standard covers thermal efficiency and related markings of only those appliances whose efficiencies are not regulated in the U.S.A. by the Energy Policy and Conservation Act of 1975 and the National Energy Conservation Policy Act of 1978,* or covered in Canada by Clause 18, Items unique to Canada. * At the time of this printing, the above acts regulate the thermal efficiency (heating capacity) of vented appliances. For information, contact the U.S. Department of Energy, Conservation and Solar Applications, Consumer Products Efficiency Branch, 20 Massachusetts Avenue, N.W., Washington, DC 20545. 1.4 If a value of measurement as shown in this Standard is followed by an equivalent value in other units, the first stated value is to be regarded as the specification. 1.5 All references to psi throughout this Standard are to be considered gauge pressures unless otherwise specified. 1.6 All vented gas-fired space heating appliances conform to the applicable requirements under Clauses 4 and 5. In addition, for requirements specific to product type also see: a) Clause 6, Vented room heaters construction, Clause 7, Vented room heaters performance; b) Clause 8, Gravity and fan-type direct vent wall furnaces construction, Clause 9, Gravity and fan-type direct vent wall furnaces performance; c) Clause 10, Gravity and fan-type wall furnaces construction, Clause 11, Gravity and fan-type wall furnaces performance; d) Clause 12, Gravity and fan-type floor furnaces construction (United States only), Clause 13, Gravity and fan-type floor furnaces performance (United States only); and e) Clause 14, Vented condensing gas-fired space heating appliances construction, Clause 15, Vented condensing gas-fired space heating appliances performance. 1.7 Clause 17, Items unique to the United States, contains clauses that are unique to the United States. 1.8 Clause 18, Items unique to Canada, contains clauses that are unique to Canada. 1.9 Special construction clauses applicable to vented space heating appliances designed for use with an optional design-certified conversion kit are outlined under Annex H, Provisions for listed gas appliance conversion kits (optional). 1.10 Clause 2 contains a list of standards specifically referenced in this Standard, and sources from which these referenced standards may be obtained. 1.11 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.