NORA REVIEW (QUESTIONS WELL
ANSWERED)
In a typical oil burner, the motor drives: - correct answer ✔✔ Both the fuel unit and the fan
The key final adjustment for most oil burners is: - correct answer ✔✔ Combustion air
High static air pressure burners: - correct answer ✔✔ Enable boilers and furnaces to have
tighter more efficient heat exchanger passages
Dirt or lint build-up on the burnerfan blades will: - correct answer ✔✔ Reduce the amount of
combustion air
One gallon of #2 oil contains approximately: - correct answer ✔✔ 140,000 BTU's
All petroleum products are chemical compounds of: - correct answer ✔✔ Hydrogen and Carbon
The pour point of #2 oil is: - correct answer ✔✔ The lowest temperature at which oil will flow
Flash point of a fuel is an indication of: - correct answer ✔✔ The maximum temperature at
which it can be safely stored and handled without serious fire hazard
The pour point of #2 oil can be reduced by: - correct answer ✔✔ Blending it with kerosene
As heating oil gets colder its viscosity (thickness): - correct answer ✔✔ Increases
,A tank without a vent alarm: - correct answer ✔✔ Should not be filled
Oil lines that contact concrete or dirt should be: - correct answer ✔✔ Coated or sleeved in
plastic pipe with no fittings below the floor
What is the most common source of water in oil tanks? - correct answer ✔✔ Condensation
The home for bacterial growth and sludge in the bottom of the oil tank is: - correct answer ✔✔
Water
Pumping the old oil from a tank being replaced into the new tank: - correct answer ✔✔ Must be
avoided because it can lead to premature tank failure
Fuel units perform the following functions: - correct answer ✔✔ Move oil from the tank to the
burner and deliver it at a constant regulated pressure to the nozzle
The best way to clear a clogged oil line is to: - correct answer ✔✔ Use a hand pump to suck the
blockage out
If the oil level in the tank is 4 feet below and 10 feet away from the fuel unit and the oil filter is
clean the vacuum reading should be approximately: - correct answer ✔✔ 4 to 7 inches
If the operating vacuum is significantly less than the calculated vacuum you probably have: -
correct answer ✔✔ A suction line leak
If the operating vacuum reading is significantly above the calculated vacuum you probably have:
- correct answer ✔✔ A clogged oil filter
, It is best to connect fuel units as a one-pipe system instead of two-pipe because: - correct
answer ✔✔ One pipe leads to longer filter life and eliminates worries about leaking return lines
If a nozzle is dirty or plugged it should be: - correct answer ✔✔ Replaced
What keeps a nozzle from overheating while the burner is running? - correct answer ✔✔ The
amount of air and oil traveling past it
The flow rate stamped on the nozzle is based on: - correct answer ✔✔ 100 psi
The purpose of an oil burner nozzle is to: - correct answer ✔✔ Atomize and meter the oil
Nozzle after-drip can be caused by: - correct answer ✔✔ Thermal expansion of the oil in the
drawer assembly after shut down
To reduce combustion problems caused by cold oil: - correct answer ✔✔ Increase the pump
pressure and reduce the nozzle size
Increasing the fuel pump pressure will: - correct answer ✔✔ Increase the flow rate
Generally, the end of the burner air tube should be: - correct answer ✔✔ Be flush with the face
of the chamber or recessed approximately ¼"
The draft regulator can: - correct answer ✔✔ Decrease the draft
A draft regulator is required because: - correct answer ✔✔ The draft produced by the chimney
needs to be controlled
ANSWERED)
In a typical oil burner, the motor drives: - correct answer ✔✔ Both the fuel unit and the fan
The key final adjustment for most oil burners is: - correct answer ✔✔ Combustion air
High static air pressure burners: - correct answer ✔✔ Enable boilers and furnaces to have
tighter more efficient heat exchanger passages
Dirt or lint build-up on the burnerfan blades will: - correct answer ✔✔ Reduce the amount of
combustion air
One gallon of #2 oil contains approximately: - correct answer ✔✔ 140,000 BTU's
All petroleum products are chemical compounds of: - correct answer ✔✔ Hydrogen and Carbon
The pour point of #2 oil is: - correct answer ✔✔ The lowest temperature at which oil will flow
Flash point of a fuel is an indication of: - correct answer ✔✔ The maximum temperature at
which it can be safely stored and handled without serious fire hazard
The pour point of #2 oil can be reduced by: - correct answer ✔✔ Blending it with kerosene
As heating oil gets colder its viscosity (thickness): - correct answer ✔✔ Increases
,A tank without a vent alarm: - correct answer ✔✔ Should not be filled
Oil lines that contact concrete or dirt should be: - correct answer ✔✔ Coated or sleeved in
plastic pipe with no fittings below the floor
What is the most common source of water in oil tanks? - correct answer ✔✔ Condensation
The home for bacterial growth and sludge in the bottom of the oil tank is: - correct answer ✔✔
Water
Pumping the old oil from a tank being replaced into the new tank: - correct answer ✔✔ Must be
avoided because it can lead to premature tank failure
Fuel units perform the following functions: - correct answer ✔✔ Move oil from the tank to the
burner and deliver it at a constant regulated pressure to the nozzle
The best way to clear a clogged oil line is to: - correct answer ✔✔ Use a hand pump to suck the
blockage out
If the oil level in the tank is 4 feet below and 10 feet away from the fuel unit and the oil filter is
clean the vacuum reading should be approximately: - correct answer ✔✔ 4 to 7 inches
If the operating vacuum is significantly less than the calculated vacuum you probably have: -
correct answer ✔✔ A suction line leak
If the operating vacuum reading is significantly above the calculated vacuum you probably have:
- correct answer ✔✔ A clogged oil filter
, It is best to connect fuel units as a one-pipe system instead of two-pipe because: - correct
answer ✔✔ One pipe leads to longer filter life and eliminates worries about leaking return lines
If a nozzle is dirty or plugged it should be: - correct answer ✔✔ Replaced
What keeps a nozzle from overheating while the burner is running? - correct answer ✔✔ The
amount of air and oil traveling past it
The flow rate stamped on the nozzle is based on: - correct answer ✔✔ 100 psi
The purpose of an oil burner nozzle is to: - correct answer ✔✔ Atomize and meter the oil
Nozzle after-drip can be caused by: - correct answer ✔✔ Thermal expansion of the oil in the
drawer assembly after shut down
To reduce combustion problems caused by cold oil: - correct answer ✔✔ Increase the pump
pressure and reduce the nozzle size
Increasing the fuel pump pressure will: - correct answer ✔✔ Increase the flow rate
Generally, the end of the burner air tube should be: - correct answer ✔✔ Be flush with the face
of the chamber or recessed approximately ¼"
The draft regulator can: - correct answer ✔✔ Decrease the draft
A draft regulator is required because: - correct answer ✔✔ The draft produced by the chimney
needs to be controlled
