What key component of a natural gas burner is used to automatically ignite the flammable air and fuel mixture at the tip of the burner?
A. Spiders
B. Impellers
C. Igniters
D. Knockout pots
A. Incorrect. Spiders are devices with a spiderlike shape that are used to inject fuel into the boiler.
B. Incorrect. Impellers are fixed, vaned devices that cause the air/fuel mixture to swirl above the burner.
C. Correct. Igniters are devices used to automatically ignite the flammable air and fuel mixture at the tip of the burner.
D. Incorrect. Knockout pots remove liquids and condensate from the fuel before it is sent to the burners.
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