Oil Burner License Exam – 250 Practice Questions with Verified Correct Answers (Rated A+)

Oil Burner License Exam – 250 Practice Questions with Verified Correct Answers (Rated A+) What is the first thing a tech should do when arriving at a no combustion call? - RIGHT CHOICE Ask how many times the customer reset the unit. What is the best long-term solution for preventing a clogged nozzle? - RIGHT CHOICE -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. - RIGHT CHOICE False When in the presence of a flame, a cad cell normally reads. - RIGHT CHOICE 300-1000 ohms If a pump is used to bring oil to a level higher than the tank, an oil safety valve is required. - RIGHT CHOICE True On a call where a hydronic heat system is putting out too much heat on the stack, the issue may be. - RIGHT CHOICE -Too much draft. -Not enough combustion air in the equipment room. -Air leakage into chamber. A high CO2 reading is caused by.. - RIGHT CHOICE Incomplete combustion An often overlooked cause of a high CO2 reading is.. - RIGHT CHOICE Not enough combustion air in the equipment room. When multiple pumps are wired together in a heating system, they should be wired in.. - RIGHT CHOICE parallel In a series circuit.. - RIGHT CHOICE Current has one path. When 2 burners are connected to the same chimney.. - RIGHT CHOICE Sufficient draft must be obtained to operate both units. The ignition transformer is located.. - RIGHT CHOICE In the primary control. When safeties are wired in series one safety will affect the operation of the others. - RIGHT CHOICE True A stack switch is no longer allowed to be installed or replaced because.. - RIGHT CHOICE It's safety cutout time is higher than what is now required. What is a power venter and what does it do? - RIGHT CHOICE 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? - RIGHT CHOICE 140" The difference between an adjustable flame retention burner and a fixed flame retention burner is? - RIGHT CHOICE 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.. - RIGHT CHOICE 527 CMR 9.0 Heat is a form of.. - RIGHT CHOICE Energy If a burner is operational but the circulator pump isn't running.. - RIGHT CHOICE The pump relay is not working correctly A method of dealing with low viscosity/cold temps with #2 oil? - RIGHT CHOICE Increase pump pressure/ decrease nozzle size What is needed at the outlet of an oil tank? - RIGHT CHOICE Thermal safety valve Where do you obtain an installation permit for oil burners? - RIGHT CHOICE Fire Dept How many Btu's approximately in 1 gal of #2 fuel oil? - RIGHT CHOICE 140,000 btu's Solid state ignition is superior to spark because - RIGHT CHOICE It is not affected by reduced voltage What is an installation? - RIGHT CHOICE 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? - RIGHT CHOICE 4' A pump in a one pipe system that is full of air can be self purged. - RIGHT CHOICE False List the minimum size of an oil supply line. - RIGHT CHOICE 3/8" A material with electrons so loose it allows voltage to pass with little or no resistance.. - RIGHT CHOICE Is a conductor If a high limit goes off, what does a low water switch do? - RIGHT CHOICE Maintains water temperature What is flashpoint an indicator of? - RIGHT CHOICE Minimum temperature oil will ignite but not continue to burn. What travels on the inside of the wire? - RIGHT CHOICE Volts What does readily accessible mean pertaining to oil burning equipment? - RIGHT CHOICE Capable of being reached easily and quickly for operation, maintenance or inspection. What is the minimum vent pipe on an oil tank? - RIGHT CHOICE 1 1/4" What causes corrosion on a flue pipe? - RIGHT CHOICE When the flue pipe is operating below the dew point temperature. What are the methods to prevent oil waxing? - RIGHT CHOICE Put additives in the fuel. Add an oil line heater. Cut with #1 fuel or kerosene. What is the maximum tank size allowed inside unenclosed? - RIGHT CHOICE 660 gal What is the purpose of a delayed oil valve? - RIGHT CHOICE Allows time for the oil pump to get up to speed. Delays oil flow to the nozzle. On a call where a hydronic heat system is putting out too much heat, the issue could be? - RIGHT CHOICE A shorted out thermostat. When measuring a cad cell with the burner running and the ff terminals jumped out, what should the cad cell reading be? - RIGHT CHOICE 1600 ohms What are the possible causes of soot at or near the power venter? - RIGHT CHOICE Incomplete combustion What is a possible side effect of air in a nozzle line? - RIGHT CHOICE Soot What is the cause if the cad cell is tripped on safety? - RIGHT CHOICE Dirty cad cell