NORA Study Guide accurate Questions & Answers

The key final adjustment for most oil burners is? - ANSWER Combustion Air Dirt or lint build-up in the bevel of the burner fan blades will? - ANSWER Reduce the blade bevel and reduce the amount of air delivered To change the air ratio for different firing rates with an adjustable head burner you? - ANSWER Move the head forward or backward, against or away from the ring closing or opening the tertiary slot One advantage of high static pressure burners is? - ANSWER Allows manufacturers to create tighter more efficient heat exchangers One gallon of #2 fuel oil contains approximately? - ANSWER 140,000 BTU'S All petroleum products are chemical compounds of? - ANSWER Carbon & Hydrogen The flash point of a fuel is an indication of? - ANSWER The maximum temperature at which fuel can be stored safely and handled without a serious fire hazard. 100 degrees The ignition point of fuel is? - ANSWER The lowest temperature at which rapid combustion of a fuel will take place. The point at which all fuel has been heated and vaporized. 500 degrees The pour point of #2 oil is? - ANSWER The lowest point at which fuel will flow. 17 degrees As heating oil gets colder it's viscosity? - ANSWER Increases Sulfuric acid in combustion gases can? - ANSWER Create Sulfuric Trioxide which can react with the water vapor in the combustion gases to create a sulfuric acid aerosol which will scale up the heat exchanger The home for bacterial growth and sludge in the bottom of the oil tank is? - ANSWER Water To insure clean, uncontaminated fuel reaches the oil burner? - ANSWER Make sure to use a clean oil filter at the tank Water in oil tanks comes from? - ANSWER Condensation, broken tank gauge, loose vent or fill fittings or missing caps, pumping old oil into new tank When installing an oil tank be sure? - ANSWER Fill and vent are pitched downwards, install oil filter Oil lines buried in concrete should be? - ANSWER Covered copper oil line Fuel units (oil pumps) perform the following function - ANSWER Draw oil from the tank to the burner and pressuriz