MASSACHUSETTS OIL BURNER PRACTICE
EXAM WITH CORRECT ACTUAL
QUESTIONS AND CORRECTLY WELL
DEFINED ANSWERS LATEST ALREADY
GRADED A+ 2025 – 2026
It is best to connect your unit as a one pipe system instead of a 2 pipe system
because - ANSWERS-One pipe leads to longer filter life and eliminates worries
about leaking return lines
A fuel de-aerator: - ANSWERS-Eliminates the need for a return line back to
the tank
A cause of pulsating oil pump pressure and a pulsating fire is - ANSWERS-Air
leaks in the suction line
Increasing the fuel pump pressure will - ANSWERS-Increase the flow rate
, The purpose of an oil burner nozzle is to - ANSWERS-Automize the oil,
provide a pattern of oil spray, and meter the amount of oil burned
When replacing nozzle - ANSWERS-Follow the manufacturer's
recommendations
To reduce combustion problems caused by cold oil - ANSWERS-Increase the
pump pressure, install a nozzle line pre-heater, and use additives or kerosene
to lower viscosity
Nozzle after trip can be caused by - ANSWERS-a defective pressure regulating
valve, air in the nozzle line, and oil expansion in the nozzle after shut down
The flow rate stamped on the nozzle is based on: - ANSWERS-100 PSI
Viscosity problems can be corrected by: - ANSWERS-Decreasing the nozzle
size and increasing the pump pressure accordingly
The minimum operating pressure of an oil pump is: - ANSWERS-100 PSI
If a stack relay fails you, must? - ANSWERS-Replace it with an approved type
controller
Aquastats are normally found on what type of heating systems? - ANSWERS-
Hydronic
Airstats are found on what type of heating systems? - ANSWERS-Forced warm
air systems
EXAM WITH CORRECT ACTUAL
QUESTIONS AND CORRECTLY WELL
DEFINED ANSWERS LATEST ALREADY
GRADED A+ 2025 – 2026
It is best to connect your unit as a one pipe system instead of a 2 pipe system
because - ANSWERS-One pipe leads to longer filter life and eliminates worries
about leaking return lines
A fuel de-aerator: - ANSWERS-Eliminates the need for a return line back to
the tank
A cause of pulsating oil pump pressure and a pulsating fire is - ANSWERS-Air
leaks in the suction line
Increasing the fuel pump pressure will - ANSWERS-Increase the flow rate
, The purpose of an oil burner nozzle is to - ANSWERS-Automize the oil,
provide a pattern of oil spray, and meter the amount of oil burned
When replacing nozzle - ANSWERS-Follow the manufacturer's
recommendations
To reduce combustion problems caused by cold oil - ANSWERS-Increase the
pump pressure, install a nozzle line pre-heater, and use additives or kerosene
to lower viscosity
Nozzle after trip can be caused by - ANSWERS-a defective pressure regulating
valve, air in the nozzle line, and oil expansion in the nozzle after shut down
The flow rate stamped on the nozzle is based on: - ANSWERS-100 PSI
Viscosity problems can be corrected by: - ANSWERS-Decreasing the nozzle
size and increasing the pump pressure accordingly
The minimum operating pressure of an oil pump is: - ANSWERS-100 PSI
If a stack relay fails you, must? - ANSWERS-Replace it with an approved type
controller
Aquastats are normally found on what type of heating systems? - ANSWERS-
Hydronic
Airstats are found on what type of heating systems? - ANSWERS-Forced warm
air systems
