Preface This is the second edition of CSA/ANSI Z21.1 - CSA 1.1, Household cooking gas appliances. It supersedes the previous edition published in 2016. 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.