Oil Burner License Exam 2024 Questions and Correct Answers 100% Verified.What is the first thing a tech should do when arriving at a no combustion call? -Correct Answer Ask how many times the customer reset the unit.What is the best long term solution for preventing a clogged nozzle? -Correct Answer -Remove any underground storage tanks.-Install a quality oil filter.-Cut the suction line 10" above the tank outlet to prevent sludge.Hot water and steam valves are interchangeable. -Correct Answer False When in the presence of a flame, a cad cell normally reads.. -Correct Answer 300-1000 ohms If a pump is used to bring oil to a level higher than the tank, an oil safety valve is required. -Correct Answer True On a call where a hydronic heat system is putting out too much heat on the stack, the issue may be.. - Correct Answer -Too much draft.-Not enough combustion air in the equipment room.-Air leakage into chamber.A high CO2 reading is caused by.. -Correct Answer Incomplete combustion An often overlooked cause of a high CO2 reading is.. -Correct Answer Not enough combustion air in the equipment room.When multiple pumps are wired together in a heating system, they should be wired in.. -Correct Answer parallel In a series circuit.. -Correct Answer Current has one path. 1 / 3
When 2 burners are connected to the same chimney.. -Correct Answer Sufficient draft must be obtained to operate both units.The ignition transformer is located.. -Correct Answer In the primary control.When safeties are wired in series one safety will affect the operation of the others. -Correct Answer True A stack switch is no longer allowed to be installed or replaced because.. -Correct Answer It's safety cutout time is higher than what is now required.What is a power venter and what does it do? -Correct Answer An electrical device that sends fluid gases into the chimney connector.A burner in a confined space using 1 GPH of #2 fuel oil requires what size permanent opening for combustion air? -Correct Answer 140" The difference between an adjustable flame retention burner and a fixed flame retention burner is? - Correct Answer Air inlets can be adjusted Ignitor position can be adjusted Fuel can be adjusted Oil tank design, construction, installation and testing shall be in accordance with.. -Correct Answer 527
CMR 9.0
Heat is a form of.. -Correct Answer Energy If a burner is operational but the circulator pump isn't running.. -Correct Answer The pump relay is not working correctly 2 / 3
A method of dealing with low viscosity/cold temps with #2 oil? -Correct Answer Increase pump pressure/ decrease nozzle size What is needed at the outlet of an oil tank? -Correct Answer Thermal safety valve Where do you obtain an installation permit for oil burners? -Correct Answer Fire Dept How many Btu's approximately in 1 gal of #2 fuel oil? -Correct Answer 140,000 btu's Solid state ignition is superior to spark because -Correct Answer It is not affected by reduced voltage What is an installation? -Correct Answer The complete setting in place, ready for operation, of an oil burner appliance together with its accessories and equipment.How far must a power vent terminate from an opening or window? -Correct Answer 4' A pump in a one pipe system that is full of air can be self purged. -Correct Answer False List the minimum size of an oil supply line. -Correct Answer 3/8" A material with electrons so loose it allows voltage to pass with little or no resistance.. -Correct Answer Is a conductor If a high limit goes off, what does a low water switch do? -Correct Answer Maintains water temperature What is flashpoint an indicator of? -Correct Answer Minimum temperature oil will ignite but not continue to burn.What travels on the inside of the wire? -Correct Answer Volts
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