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Nora Certification Questions And Answers With Verified Solutions Already Passed!!!
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Nora Certification Questions And Answers With Verified Solutions Already Passed!!!
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Nora Certification Questions AndAnswers With Verified Solutions Already
Passed!!!
The final adjustment for most oil burners is? - ANSWER✔✔Combustion air
Dirt or lint build-up in the bevel of the fan blades will: - ANSWER✔✔Reduce the
amount of combustion air.
To change the air ratio for different firing rates with an adjustable head burner you:
- ANSWER✔✔Adjust the position of the draw assembly in the air tube.
One advantage of a high pressure burner is: - ANSWER✔✔They enable boiler
manufacturers to design tighter more efficient heat exchangers.
One gallon of #2 oil contains approximately: - ANSWER✔✔140,000 British
Thermal Unit's (BTU's)
All petroleum products are chemical compounds of what two atom's? -
ANSWER✔✔Carbon and Hydrogen
Flash point of a fuel is an indication of: - ANSWER✔✔The lowest temperature at
which the fuel will flash but not continue to burn.
The ignition point is: - ANSWER✔✔The lowest temperature at which rapid
combustion of the fuel takes place in air.
, The pour point of #2 oil: - 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): - ANSWER✔✔Increases
(Thicker consistency)
Sulfuric acid in combustion gasses can: - 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: -
ANSWER✔✔Water.
To insure clean uncontaminated fuel reaches the oil burner: - ANSWER✔✔Install
a quality filter.
Water in oil tanks come from: - 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: - 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.
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