Oil Burner License exam 2024 with 100% correct answers

What is the first thing a tech should do when arriving at a no combustion call? correct answersAsk how many times the customer reset the unit. What is the best long term solution for preventing a clogged nozzle? correct answers-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 answersFalse When in the presence of a flame, a cad cell normally reads.. correct answers300-1000 ohms If a pump is used to bring oil to a level higher than the tank, an oil safety valve is required. correct answersTrue On a call where a hydronic heat system is putting out too much heat on the stack, the issue may be.. correct answers-Too much draft. -Not enough combustion air in the equipment room. -Air leakage into chamber. A high CO2 reading is caused by.. correct answersIncomplete combustion An often overlooked cause of a high CO2 reading is.. correct answersNot enough combustion air in the equipment room. When multiple pumps are wired together in a heating system, they should be wired in.. correct answersparallel