MASSACHUSETTS OIL BURNER EXAM WITH
(Q&A) 2024//25
If the oil level in the tank is 4 feet below the fuel unit in 10 feet away, the approximate
vacuum should be
- CORRECT ANSWER 5 - 6 inches
If the operating vacuum reading a significantly above the calculated vacuum, you
probably have a
- CORRECT ANSWER Clogged oil filter
If the operating vacuum reading is significantly less than the calculated vacuum, you
probably have a
- CORRECT ANSWER Suction line leak
It is best to connect your unit as a one pipe system instead of a 2 pipe system because
- CORRECT ANSWER One pipe leads to longer filter life and eliminates worries about
leaking return lines
A fuel de-aerator
: - CORRECT ANSWER Eliminates the need for a return line back to the tank
A cause of pulsating oil pump pressure and a pulsating fire is - CORRECT ANSWER Air
leaks in the suction line
Increasing the fuel pump pressure will
- CORRECT ANSWER Increase the flow rate
The purpose of an oil burner nozzle is to
- CORRECT ANSWER Atomize the oil, provide a pattern of oil spray, and meter the
amount of oil burned
When replacing nozzle
- CORRECT ANSWER Follow the manufacturer's recommendations
To reduce combustion problems caused by cold oil
- CORRECT ANSWER 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
- CORRECT ANSWER 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:
- CORRECT ANSWER 100 PSI
A proper combustion chamber:
- CORRECT ANSWER Is large enough so the fire doesn't touch (impinge on) any
surface, reflects heat back into the fire, and is made of material (like ceramic) that heats
up quickly and cools off quickly
Too much draft over the fire can occur when
- CORRECT ANSWER There are leaks between the sections of the boiler that let
basement air into the heat exchanger
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
Aqua stats are normally found on what type of heating systems?
- CORRECT ANSWER Hydronic
(Q&A) 2024//25
If the oil level in the tank is 4 feet below the fuel unit in 10 feet away, the approximate
vacuum should be
- CORRECT ANSWER 5 - 6 inches
If the operating vacuum reading a significantly above the calculated vacuum, you
probably have a
- CORRECT ANSWER Clogged oil filter
If the operating vacuum reading is significantly less than the calculated vacuum, you
probably have a
- CORRECT ANSWER Suction line leak
It is best to connect your unit as a one pipe system instead of a 2 pipe system because
- CORRECT ANSWER One pipe leads to longer filter life and eliminates worries about
leaking return lines
A fuel de-aerator
: - CORRECT ANSWER Eliminates the need for a return line back to the tank
A cause of pulsating oil pump pressure and a pulsating fire is - CORRECT ANSWER Air
leaks in the suction line
Increasing the fuel pump pressure will
- CORRECT ANSWER Increase the flow rate
The purpose of an oil burner nozzle is to
- CORRECT ANSWER Atomize the oil, provide a pattern of oil spray, and meter the
amount of oil burned
When replacing nozzle
- CORRECT ANSWER Follow the manufacturer's recommendations
To reduce combustion problems caused by cold oil
- CORRECT ANSWER 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
- CORRECT ANSWER 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:
- CORRECT ANSWER 100 PSI
A proper combustion chamber:
- CORRECT ANSWER Is large enough so the fire doesn't touch (impinge on) any
surface, reflects heat back into the fire, and is made of material (like ceramic) that heats
up quickly and cools off quickly
Too much draft over the fire can occur when
- CORRECT ANSWER There are leaks between the sections of the boiler that let
basement air into the heat exchanger
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
Aqua stats are normally found on what type of heating systems?
- CORRECT ANSWER Hydronic
