Oil Burner License Exam Questions and Answers (Graded A)

Oil Burner License Exam Questions and Answers (Graded A) 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 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 adju