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G2 Gas Technician Module 12 Revised Exam Questions and answers with 100% Complete Solutions | verified &updated 2024 $13.00   Add to cart

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G2 Gas Technician Module 12 Revised Exam Questions and answers with 100% Complete Solutions | verified &updated 2024

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  • G2 Gas Technician

G2 Gas Technician Module 12 Revised Exam Questions and answers with 100% Complete Solutions | verified &updated 2024

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  • October 24, 2024
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G2 Gas Technician Module 12 Revised Exam
Questions and answers with 100% Complete
Solutions | verified &updated 2024

What is the flame failure response test time for a thermocouple/thermopile

residential system. - ✔✔90 seconds




Closed circuit test(thermostat OPEN) on a thermopile system. - ✔✔600 milivolts




Pilot flame installation rules. - ✔✔Must no impinge on main burner or heat

exchanger, away from drafts and within the pilot flame about 3/8" to 1/2"




What is flame ionization? - ✔✔The process of heating air molecules to allow for

separation of electrons allowing a flame to conduct an electrical current. When

an AC signal is directed through the flame it will conduct an electrical charge

across the flame to the ground.

, What is flame rectification? - ✔✔When you over size your ground to prevent

a flame detector from getting a false positive and thinking there is still flame

present due to carbon build up.




Closed circuit test(thermostat CLOSED) on a thermopile system. - ✔✔400-

450 milivolts




What does a flame rod do? - ✔✔Senses a pulsating dc current that signals flame

is present.




How should you size a flame rod? Why? - ✔✔Must have 4 times less surface

area then the ground. Normal practice is 10 times smaller. This causes the signal

to flow easier from the flame rod to ground.




Pilot flame rectification-

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