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In a typical oil burner, the oil is ignited by ______. Correct answer: Electrodes In a furnace equipped with a solenoid oil flow valve, the valve will close when _______. Correct answer: Power is removed The component that turns the oil burner and blower on and off in response to external commands is the ________. Correct answer: Primary control
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In a typical oil burner, the oil is ignited by ______. Correct answer: Electrodes In a furnace equipped with a solenoid oil flow valve, the valve will close when _______. Correct answer: Power is removed The component that turns the oil burner and blower on and off in response to external commands is the ________. Correct answer: Primary control The cad cell in an oil furnace performs the same function as which device in a gas furnace? Correct answer: Flame detector A two-line oil piping system is used when the oil supply level is below the burner because it _______.
Correct answer: Eliminates the need to bleed air from the lines If a furnace is found with a puddle of oil in the combustion chamber, ________. Correct answer: Pump out or soak up the excess oil from the chamber A pulsating sound coming from an oil furnace indicates ________. Correct answer: The flame is touching the combustion chamber The highest AFUE-rated oil furnace that a technician is likely to encounter is _______. Correct answer: 86.5 percent When a flame retention head burner is used, the smoke level should be adjusted for _______. Correct answer: Zero smoke An uncovered cad cell tested with an ohmmeter produces a reading of 800 Ω. The next step is to ________. Correct answer: Do nothing; The cell is working properly A faulty nozzle should be ________. Correct answer: Replaced