Updated Standard for Decorative Gas Appliances
Standard for Decorative Gas Appliances
The updated standard for Decorative Gas Appliances, Vented, ANSI Z21.50 / CSA 2.22, has been revised, and the 9th Edition was published in June 2019. Within this 9th Edition is the inclusion of a newly defined ignition source: the on-demand system.
The on-demand system is an ignition system that is placed into operation for a predetermined amount of time, once the main burner gas valve is operated, and extinguishes the pilot if the main burner flame has not been proven or the main burner gas valve does not open during this predetermined amount of time.
With the revised requirements, the updated standard for Decorative Gas Appliances now specifies maximum safety control timings for pilot flame-establishing, flame failure response, and flame failure re-ignition. Instruction manuals and product markings must also be updated to account for the integration of the on-demand system, reflecting a clear move towards stronger safety protocols in decorative gas appliance design.
