CSA ANSI Z21.84:2017 pdf download.Manually lighted, natural gas, decorative gas appliances for installation in solid-fuel burning appliances
4.7.2 Manual gas valves shall comply with the applicable provisions of the Standard for Manually Operated Gas Valves for Appliances, Appliance Connector Valves and Hose End Valves, ANSI Z21.15●CSA 9.1, or the Standard for Combination Gas Controls for Gas Appliances, ANSI Z21.78●CSA 6.20.
4.7.3 When the valve is exposed to view, lever or tee handles shall be at 90 degrees (1.57 rad) to the line of flow when in the“off" position and parallel when in the "on”position. If this cannot be done, if the valve handle only is exposed to view, or if a knob-type handle is used, the“on”and“off”positions or directions of rotation to open and close shall be clearly indicated by means of a Class IIA or IIB marking.
4.7.7 Latching type valves, if provided, shall be positive in their action, shall not require for their operation an axial displacement of the plug in contact with the barrel or application of undue pressure on the plug that might cause the valve to stick, and shall permit ready operation with one hand, and accessibility to all parts for repair and replacement.
4.8.3 Series 300 stainless steel corrugated tubing used as part of a manifold assembly shall not be exposed to
temperatures in excess of 900°F (482 °C) when the appliance is operated as specified in Clause 5.9,Handle temperatures. The tubing shall demonstrate compliance with the Tubing Structure, Bending Test, and Bursting Test requirements specified in the Standard for Connectors for Gas Appliances, ANSI Z21.24●CSA 6.10.
4.8.9 Gas supply piping to which connections are made for burners, lighters, or other branch supply lines shall be readily removable, yet rigidly supported, to prevent turning or lateral displacement in making connection to the building piping, or during the ordinary handling of the appliance.
4.8.12 A test gauge connection shall be furnished downstream from the last main line gas control for measuring gas pressure at the burner. The connection shall be a minimum 1/8-inch NPT or cap with cleanly cut taper pipe threads in accordance with the Standard for Pipe Threads, General Purpose (Inch),ANSI/ASME B1.20.1.
When the pressure tap is provided as part of the control, this pressure test gage connection shall be:
a) a tapping sealed by a 1/8-inch NPT plug or cap with cleanly cut taper pipe threads in accordance with the Standard for Pipe Threads, General Purpose (Inch), ANSI/ASME B1.20.1. If the plug is of the slotted type, it shall also incorporate square or hex flats; or
b) a hose fitting with a minimum length of 0.355 in (9.02 mm) and a 0.355 in (9.02 mm) maximum/0.335 in (8.05 mm) minimum outside diameter and which incorporates a sealing means.CSA ANSI Z21.84 pdf download.