Ontario Gas G1 Practice Exam Prep
B149.3-10 Questions and answers with
100% Complete Solutions | verified
&updated 2024
The maximum flame failure response time allowed on a gas appliance firing
2000000 - ✔✔4 seconds
A combustion air-proving switch is an example of? - ✔✔A running interlock
The minimum required pre-purge on an industrial gas-fired appliance? - ✔✔4x
the volume of the combustion zone&flue passages
A proven low-fire start is required on burners in excess of? - ✔✔1000000
How many times should you press the reset button on the flame safeguard
control of an industrial gas burner? - ✔✔Once
, If the combustion air switch opens during the start-up of an industrial gas burner
you should? - ✔✔Check the air supply delivery system
If an industrial gas burner employs a flame rectification system, the area of the
ground plate must be? - ✔✔4x the area of the flame rod
A flame rod? - ✔✔Transmits a DC signal
A lead sulphide cell is used to detect? - ✔✔Infrared radiation
A cracked flame rod insulator will cause? - ✔✔A high resistance AC short
to ground
An UV scanner should be sighted to view? - ✔✔The base of the flame
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