Nora Certification QUESTIONS WITH
CORRECT ANSWERS
The final adjustment for most oil burners is? - correct answer ✔✔ Combustion air
Dirt or lint build-up in the bevel of the fan blades will: - correct answer ✔✔ Reduce the amount
of combustion air.
To change the air ratio for different firing rates with an adjustable head burner you: - correct
answer ✔✔ Adjust the position of the draw assembly in the air tube.
One advantage of a high pressure burner is: - correct answer ✔✔ They enable boiler
manufacturers to design tighter more efficient heat exchangers.
One gallon of #2 oil contains approximately: - correct answer ✔✔ 140,000 British Thermal Unit's
(BTU's)
All petroleum products are chemical compounds of what two atom's? - correct answer ✔✔
Carbon and Hydrogen
Flash point of a fuel is an indication of: - correct answer ✔✔ The lowest temperature at which
the fuel will flash but not continue to burn.
The ignition point is: - correct answer ✔✔ The lowest temperature at which rapid combustion
of the fuel takes place in air.
The pour point of #2 oil: - correct answer ✔✔ 1. Can be lowered by blending with kerosene,
, 2. Can be lowered with fuel additives,
3. Is the lowest temperature at which oil will flow.
As heating oil gets colder its viscosity (thickness): - correct answer ✔✔ Increases (Thicker
consistency)
Sulfuric acid in combustion gasses can: - correct answer ✔✔ 1. Damage the flue liner,
2. Eat holes in the flue pipe,
3. Create scale buildup in the heat exchanger.
The home for bacteria growth and sludge in the bottom of the oil tank is: - correct answer ✔✔
Water.
To insure clean uncontaminated fuel reaches the oil burner: - correct answer ✔✔ Install a
quality filter.
Water in oil tanks come from: - correct answer ✔✔ 1. Condensation,
2. loose or missing fill vent cap,
3. failing to drain water from tank before install.
When installing an oil tank be sure: - correct answer ✔✔ 1. Fill vents are pitched downwards
forward the tank,
2. To install a vent alarm and tank gauge,
3. To install an oil filter.
Oil lines buried in concrete should be: - correct answer ✔✔ Sleeved in plastic or PVC pipe with
no fittings below the floor.
CORRECT ANSWERS
The final adjustment for most oil burners is? - correct answer ✔✔ Combustion air
Dirt or lint build-up in the bevel of the fan blades will: - correct answer ✔✔ Reduce the amount
of combustion air.
To change the air ratio for different firing rates with an adjustable head burner you: - correct
answer ✔✔ Adjust the position of the draw assembly in the air tube.
One advantage of a high pressure burner is: - correct answer ✔✔ They enable boiler
manufacturers to design tighter more efficient heat exchangers.
One gallon of #2 oil contains approximately: - correct answer ✔✔ 140,000 British Thermal Unit's
(BTU's)
All petroleum products are chemical compounds of what two atom's? - correct answer ✔✔
Carbon and Hydrogen
Flash point of a fuel is an indication of: - correct answer ✔✔ The lowest temperature at which
the fuel will flash but not continue to burn.
The ignition point is: - correct answer ✔✔ The lowest temperature at which rapid combustion
of the fuel takes place in air.
The pour point of #2 oil: - correct answer ✔✔ 1. Can be lowered by blending with kerosene,
, 2. Can be lowered with fuel additives,
3. Is the lowest temperature at which oil will flow.
As heating oil gets colder its viscosity (thickness): - correct answer ✔✔ Increases (Thicker
consistency)
Sulfuric acid in combustion gasses can: - correct answer ✔✔ 1. Damage the flue liner,
2. Eat holes in the flue pipe,
3. Create scale buildup in the heat exchanger.
The home for bacteria growth and sludge in the bottom of the oil tank is: - correct answer ✔✔
Water.
To insure clean uncontaminated fuel reaches the oil burner: - correct answer ✔✔ Install a
quality filter.
Water in oil tanks come from: - correct answer ✔✔ 1. Condensation,
2. loose or missing fill vent cap,
3. failing to drain water from tank before install.
When installing an oil tank be sure: - correct answer ✔✔ 1. Fill vents are pitched downwards
forward the tank,
2. To install a vent alarm and tank gauge,
3. To install an oil filter.
Oil lines buried in concrete should be: - correct answer ✔✔ Sleeved in plastic or PVC pipe with
no fittings below the floor.
