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1 Oil Burner License Exam 2023 Questions and Answers complete What is the first thing a tech should do when arriving at a no combustion call? - ANSWER>>Ask how many times the customer reset the unit.What is the best long term solution for preventing a clogged nozzle? - 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. - ANSWER>>False When in the presence of a flame, a cad cell normally reads.. - 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. - ANSWER>>True On a call where a hydronic heat system is putting out too much heat on the stack, the issue may be.. - ANSWER>>-Too much draft.-Not enough combustion air in the equipment room.-Air leakage into chamber.A high CO2 reading is caused by.. - ANSWER>>Incomplete combustion An often overlooked cause of a high CO2 reading is.. - ANSWER>>Not enough combustion air in the equipment room.When multiple pumps are wired together in a heating system, they should be wired in.. - ANSWER>>parallel 1 / 3
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2 In a series circuit.. - ANSWER>>Current has one path.When 2 burners are connected to the same chimney.. - ANSWER>>Sufficient draft must be obtained to operate both units.The ignition transformer is located.. - ANSWER>>In the primary control.When safeties are wired in series one safety will affect the operation of the others. - ANSWER>>True A stack switch is no longer allowed to be installed or replaced because.. - ANSWER>>It's safety cutout time is higher than what is now required.What is a power venter and what does it do? - 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? - ANSWER>>140" The difference between an adjustable flame retention burner and a fixed flame retention burner is? - 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.. - ANSWER>>527 CMR 9.0 Heat is a form of.. - ANSWER>>Energy 2 / 3
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3 If a burner is operational but the circulator pump isn't running.. - ANSWER>>The pump relay is not working correctly A method of dealing with low viscosity/cold temps with #2 oil? - ANSWER>>Increase pump pressure/ decrease nozzle size What is needed at the outlet of an oil tank? - ANSWER>>Thermal safety valve Where do you obtain an installation permit for oil burners? - ANSWER>>Fire Dept How many Btu's approximately in 1 gal of #2 fuel oil? - ANSWER>>140,000 btu's Solid state ignition is superior to spark because - ANSWER>>It is not affected by reduced voltage What is an installation? - 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? - ANSWER>>4' A pump in a one pipe system that is full of air can be self purged. - ANSWER>>False List the minimum size of an oil supply line. - ANSWER>>3/8" A material with electrons so loose it allows voltage to pass with little or no resistance.. - ANSWER>>Is a conductor If a high limit goes off, what does a low water switch do? - ANSWER>>Maintains water temperature What is flashpoint an indicator of? - ANSWER>>Minimum temperature oil will ignite but not continue to burn.What travels on the inside of the wire? - ANSWER>>Volts
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