ANSI Z21.5.1-2017/CSA 7.1-2017 PDF Download

A standard that specifies rules and standards for gas clothes dryers is ANSI Z21.5.1-2017 and CSA 7.1-2017. It concentrates particularly on Type 1 dryers, which are made entirely of brand-new, unused components and materials. The standard applies to dryers built expressly for mobile home installations and intended for use with a variety of gases, including natural gas, manufactured gas, mixed gas, propane gas, and LP gas-air mixes.

The standard is broken down into various clauses, each of which deals with a different part of the dryer. Clause 4 discusses the dryers' construction specifications, taking into account the various gases that they are intended to utilize. The effectiveness of the dryers is covered in clause 5. The electrical equipment, wiring, and accessories included with or provided for use with the dryers are covered by Clauses 7 and 8, the former of which contains provisions specific to the United States and the latter of which contains provisions specific to Canada.

In Clause 2, which offers instructions on how to obtain certain standards, the standard also includes a list of standards that are referenced. Additionally, there are unique building requirements mentioned in Annex A that only apply to dryers made for use with the listed conversion kits that are optional. To support the usage of metric units, the standard also includes SI (Metric) equivalents.