Preface 

This is the harmonized CSA Group and UL Standard for Electric Clothes Dryers . It is the twelfth edition of CSA C22.2 No. 112 and the sixth edition of UL 2158. This edition of CSA C22.2 No. 112 supersedes the previous edition published in 2018. This edition of UL 2158 supersedes the previous edition published in 2018. The major differences between this edition and the previous edition include the addition of requirements for entrapment, stability test and anti-tip devices, heating test and surface temperature, dryers provided with a water inlet valve, UL 510A insulting tape, acoustic insulation and heat pump clothes dryers and motor controls for commercial appliances. 

This edition also includes the clarifications and revisions to risk of fire definition, thermocouples, mean value of input current, change-of-resistance method, leakage current, cool down period, base fire containment test, nichrome wire test, protective controls, metal enclosure thickness, cord-connected appliance requirements, airflow for base fire containment and endurance cycles for control devices. 

Scope 

1.1 This Standard applies to electric clothes dryers intended to be used in nonhazardous locations in accordance with CSA C22.1, Canadian Electrical Code, Part I (CE Code, Part I) and the (U.S.) National Electrical Code (NEC), on circuits having a nominal voltage not exceeding 600 V. Note: Wherever practical, for convenience, the term "appliance" has been used in lieu of "clothes dryer" or "machine". 

1.2 This Standard applies to both cord-connected and permanently connected appliances. The appliances covered by this Standard are intended for use by the general public not specifically trained in the use of the appliance, regardless of the mode by which its operation is initiated. They are for use in households and for commercial purposes, including appliances provided with coin-, ticket-, or card-operated mechanisms, laundry centers and combination washer-dryers. 

1.3 This Standard applies to tumbling clothes dryers and non-tumbling clothes dryers, such as drying cabinets, as well as both vented clothes dryers and non-vented clothes dryers, such as condensation-type and heat pump clothes dryers. Additional requirements for heat pump clothes dryers are given in Supplement SD. 

1.4 This Standard does not apply to industrial and institutional type appliances. Industrial or institutional appliances are covered under the scope of Electric Commercial Clothes-Drying Equipment, UL 1240. Note: Industrial and institutional type appliances are not intended for use by the general public, but only by trained or supervised personnel.