CSA 2-15-16:2021 pdf download.Gas-fired domestic lighting appliances
4.1.1 The general construction of a gas-fired illuminating appliance shall be such that parts are well fitted and that it will not show signs of becoming warped, bent, broken, or otherwise damaged during the initial test installation or during any of the tests specified so as to prevent its compliance with this Standard,and whether specifically covered in this Standard or not, shall be in accordance with reasonable concepts of safety, substantiality, and durability.
All specifications as to construction set forth herein may be satisfied by the construction actually prescribed or such other construction as will provide at least equivalent performance.
4.1.2 Every part of an appliance shall be designed to be secure against displacement and constructed to maintain a fixed relationship between essential parts under normal and reasonable conditions of handling and usage.
Parts not permanently secured shall be designed so that they cannot be incorrectly assembled or improperly located when removed and replaced during cleaning or other servicing.
In submitting an appliance for test, the manufacturer may furnish a list of manufacturing tolerances applicable thereto and may have the appliance tested for compliance with this Standard in both extremes of tolerances specified.
4.1.7 Slotted and recessed head screws shall conform to the applicable requirements of the Standard for Cap Screws, ASME B33.2; the Standard for Set Screws, ASME B33.3; the Standard for Machine Screws and Associated Nuts, ASME B35.1; and the Standard for Tapping and Drive Screws, ASME B35.3.
4.1.8 Wrench head bolts and nuts shall conform to the current Standard for Square and Hexagon Bolts and Nuts, Studs and Wrench Openings, ASME B33.1.
4.1.9 Controls shall be accessible for normal servicing and functional adjustment of position and shall be replaceable during normal servicing. Manifold assemblies that permit removal of control(s) intact shall be considered to meet this provision for servicing. Removal of an access panel or door to secure access to a control compartment shall be considered acceptable.
4.3.3 A burner shall not sag, distort, melt, exhibit appreciable corrosion or damage to any protective coating sufficient to expose the base metal, show leakage of gas during any of the tests specified herein, or when the burner is operated with the flame burning within the mixer tube or burner head.
The gas rate shall be adjusted at normal test pressure to within plus or minus 5 percent of the manufacturer's hourly Btu input rating.
The gas shall be ignited in such a manner that it will burn within the mixer tube and shall continue to burn there for 30 minutes. If the flame cannot be maintained within the mixer tube, the gas rate shall be reduced to a point where it can be so maintained.
At the end of this test, as well as the conclusion of all performance tests specified herein, the burner shall be carefully examined for evidence of sagging, distortion, melting, appreciable corrosion, damage to protective coating sufficient to expose the base metal, or leakage of gas.CSA 2-15-16 pdf download.