Oil Fired Heating Systems Exam Questions and Answers 100% Pass

Pour point - ANSWER-The maximum temperature at which oil can be stored, retrieved and used Complete Combustion flames - ANSWER-mainly yellow Incomplete combustion flame - ANSWER-dull reddish orange The Range of CO2 content indicating proper combustion in an oil fired furnace - ANSWER-8% to 12% For accurate readings for a CO2 test, the analyzer probe should be placed - ANSWER-near the hottest part of the flue The most common reason an oil-fired furnace is over firing - ANSWER-original nozzle was replaced with a higher capacity nozzle Stack temperature - ANSWER-is the temperature of flue gas in the flue pipe minus the temperature of the return air For combustion analysis a low CO2 reading indicates - ANSWER-incomplete combustion For combustion analysis a high CO2 reading indicates - ANSWER-average operation draft regulator - ANSWER-A device installed in the flue pipe that controls the amount of air drawn into the flue if the reading on a draft gauge is high, the weight on the draft regulator, - ANSWER-should be moved to reduce draft Measuring draft in the combustion chamber - ANSWER-part of over-fire draft test incomplete combustion causes fuel oil that is not fully consumed to turn into - ANSWER-Smoke and soot The major benefits of a two pipe fuel delivery system over a one pipe system is - ANSWER-two pipe systems are self-priming The best place for a oil furnace to have a fuel line filter installed is - ANSWER-between fuel tank and deaerator Gun burner - ANSWER-the type of oil burner that uses a motor to operate a fan and a pump