Preface This is the harmonized CSA Group and UL Standard for Household Dishwashers. It is the seventh edition of CSA C22.2 No. 167, and the tenth edition of UL 749. This edition of CSA C22.2 No. 167 supersedes the previous edition published in 2013. This edition of UL 749 supersedes the previous edition published in 2013. The major differences between this edition and the previous edition include the addition of requirements for DC Electric Test Voltages, Smart Enabled Appliances, Dishwasher Ignition Containment, Ozone Generating Dishwashers, Dishwasher Rinse Agent Exposure, Plumbing for Household Dishwashers, Dishwasher Heating Element Test and Nichrome Wire Test. Scope 1.1 This Standard applies to electric household dishwashers intended to be used in nonhazardous locations in accordance with the Canadian Electrical Code (CEC), Part I, C22.1, General Requirements %u2013 Canadian Electrical Code (CEC), Part II, C22.2, and the National Electrical Code (NEC), NFPA 70, on circuits having a nominal voltage not exceeding 250 V. 1.2 This Standard applies to both cord-connected appliances and permanently-connected appliances. 1.3 This Standard applies to smart-enabled household dishwashers that are intended to receive and respond to communication signals or data relating to power billing rate or demand response, or communication signals from a remote user interface such as a smart phone or computer. See Supplement SB. 1.4 This Standard applies to household dishwashers generating ozone during normal operation. See Supplement SC. 1.5 This Standard does not apply to commercial appliances. Commercial appliances are covered under the scope of the Standard for Commercial Dishwashing Machines, CSA C22.2 No. 168, or the Standard for Commercial Dishwashers, UL 921.