MASSACHUSETTS OIL BURNER EXAM QUESTIONS WITH CORRECT ANSWERS | UPDATED 2024/2025 | GRADED A+

The cross connection between two supply tanks shall not exceed? - correct answer 660 gallons When is an automatic draft control not required? - correct answer When the equipment is designed to control the draft. Combustion performance testing can indicate: - correct answer Improper air oil mixture, too much combustion air, and low pump pressure. If a second oil-burning appliance is installed in a single chimney, you must insure: - correct answer Sufficient draft is available for safe operation of all connected equipment. Delayed ignition can be caused by: - correct answer Weak ignition transformer You should replace the oil burner nozzle with: - correct answer The manufacturers recommended nozzle spray pattern and spray angle. Viscosity problems can be corrected by: - correct answer Decreasing the nozzle size and increasing the pump pressure accordingly The minimum operating pressure of an oil pump is: - correct answer 100 PSI If a stack relay fails you, must? - correct answer Replace it with an approved type controller Aquastats are normally found on what type of heating systems? - correct answer Hydronic MASSACHUSETTS OIL BURNER EXAM QUESTIONS WITH CORRECT ANSWERS | UPDATED 2024/2025 | GRADED A+ Airstats are found on what type of heating systems? - correct answer Forced warm air systems Under sized returns on a warm air system can result in what? - correct answer Short cycling of the oil burner Incorrect nozzle selection in regards to gallon per hour, can result in what problems in a steam system? - correct answer Some radiators not heating quickly enough Low boiler water temperature in a hydronic hot water system may be caused by? - correct answer Undersized oil burner nozzles Delayed opening oil valves are used to? - correct answer Allow oil pump to come up to speed If a steam boiler is to be installed with an automatic feeder it must also have: - correct answer A backflow prevention device How can a damaged heat exchanger be detected on a forced warm air system? - correct answer With a smoke trace candle If a high limit is installed to prevent high boiler water temperature, what is the function of the low limit? - correct answer To maintain temperature for domestic hot water On a steam system, a plugged siphon loop can have what affect on the heating system? - correct answer Insufficient heat in the living spacE