Preface This is the first edition of ANSI Z21.1/CSA 1.1, Household cooking gas appliances. Scope 1.1 This Standard applies to newly produced household cooking gas appliances (see Clause 3, Definitions), hereinafter referred to as units or appliances, constructed entirely of new, unused parts and materials. These appliances may be floor supported or built-in. 1.2 This Standard applies to household cooking gas appliances: 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; f) for use with either natural, manufactured, or mixed gas and convertible for use with propane gas (see Clause 3, Definitions); g) for manufactured (mobile) home installation for use with propane gas only (see Clause 4.1.29); h) for manufactured (mobile) home installation for use with either natural, manufactured, or mixed gas and convertible for use with propane gas (see Clause 4.1.29 and Clause 3, Definitions); i) for recreational park trailer installation for use with natural, manufactured, or mixed gases and convertible for use with propane gas (see Clause 4.1.29 and Clause 3, Definitions); and j) provided with pyrolytic self-cleaning oven features or self-cleaning broiler features, or both (see Clause 4.1.30). The construction of floor-supported units and built-in units for use with the above-mentioned gases is covered under Clause 4, Construction. The performance of floor-supported units and built-in units for use with the above-mentioned gases is covered under Clause 5, Performance. 1.3 The electrical sections of this Standard are unique to the United States and cover all electrical equipment, wiring, and accessories built-in or supplied for use with an appliance. This Standard covers only appliances having current limitations of 20 amperes and whose electrical equipment, wiring, and accessories are installed in accordance with the National Electrical Code, NFPA 70. For Canada, the electrical portions of the electrical equipment, wiring, and accessories built-in or supplied for use with an appliance are covered under the Standard for Electrical Components of Fuel Burning Equipment, CAN C22.2 No. 3. This Standard covers: a) appliances that use only gas for cooking and that are designed for connection to nominal 120-volt electrical supplies; or b) appliances that also use electrical energy for cooking and that are designed for connection to either nominal 120-volt or 240-volt electrical supplies. 1.4 Outdoor cooking gas appliances are covered in the Standard for Outdoor Cooking Gas Appliances, ANSI Z21.58/CSA 1.6. 1.5 Compact cooking gas appliances (See Clause 3, Definitions) for installation in recreational vehicles, including recreational park trailers, are covered in the Standard for Recreational Vehicle Cooking Gas Appliances, ANSI Z21.57 or the Standard for Propane Fired Cooking Appliances for Recreational Vehicles, CAN1.1.16. 1.6 If 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. 1.7 All references to "psi" throughout this Standard are to be considered gauge pressures unless otherwise specified. 1.8 Annex A contains Items Unique to Canada. 1.9 Clause 2 contains a list of standards specifically referenced in this Standard and sources from which these reference standards may be obtained. It is the responsibility of the user of this Standard to determine which referenced standard applies based on the requirements of the authority having jurisdiction at the location of the installation. 1.10 Special construction provisions applicable to an appliance designed for use with an optional listed conversion kit are outlined under Annex B (Optional) Provisions for Listed Gas Appliance Conversion Kits. 1.11 This Standard contains SI (Metric) equivalents to the yard/pound quantities, the purpose being to allow the Standard to be used in SI (Metric) units. (IEEE/ASTM SI 10, American National Standard for Metric Practice, or ISO 80000-1:2009, Quantities and units--Part 1: General is used as a guide in making metric conversion from yard/pound quantities.) If a value for a measurement and a corresponding value in other units are stated, the first stated value is to be regarded as the requirement. The given corresponding value may be approximate. If a value for a measurement and a corresponding value in other units are both specified as a quoted marking requirement, the first stated unit, or both are to be provided. 1.12 In this Standard, "shall" is used to express a requirement, i.e., a provision that the user shall 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 (non-mandatory) to define their application.