OIL BURNER LICENSE EXAM WITH GUARANTEED ACCURATE ANSWERS

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. 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.