Ontario Gas G1 Practice Exam Prep B149.3-10 Questions And Answers Fully Solved 100%

A low gas pressure switch should be set to open at? {Ans: 50% below operating pressure}A combustion air-proving switch is an example of? {Ans: A running interlock}What is the first thing you must do when using flame simulator on an industrial gas burner? {Ans: Close test firing valve}If an industrial gas burner employs a flame rectification system, the area of the ground plate must be? {Ans: 4x the area of the flame rod}What provides the opening force on a diaphragm valve? {Ans: Upstream gas pressure}A high gas pressure switch should be set to open at? {Ans: 25% above operating pressure}