Massachusetts Oil Burner Practice Exam Questions With 100% Correct Answers 2025/2026

Massachusetts Oil Burner Practice Exam Questions With 100% Correct Answers 2025/2026 The cross connection between two supply tanks shall not exceed? - answer-660 gallons When is an automatic draft control not required? - answer-When the equipment is designed to control the draft. Combustion performance testing can indicate: - 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: - answer-Sufficient draft is available for safe operation of all connected equipment. Delayed ignition can be caused by: - answer-Weak ignition transformer You should replace the oil burner nozzle with: - answer-The manufacturers recommended nozzle spray pattern and spray angle. Viscosity problems can be corrected by: - answer-Decreasing the nozzle size and increasing the pump pressure accordingly The minimum operating pressure of an oil pump is: - answer-100 PSI If a stack relay fails you, must? - answer-Replace it with an approved type controller Aquastats are normally found on what type of heating systems? - answer-HydronicAirstats are found on what type of heating systems? - answer-Forced warm air systems Under sized returns on a warm air system can result in what? - 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? - answer-Some radiators not heating quickly enough Low boiler water temperature in a hydronic hot water system may be caused by? - answer-Undersized oil burner nozzles Delayed opening oil valves are used to? - 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: - answer-A backflow prevention device How can a damaged heat exchanger be detected on a forced warm air system? - answer-With a smoke trace candle