CAD cellĪnswer : E What changes its resistance depending on the amount of light it senses a. CAD cellĪnswer : F What creates turbulence in the air-oil mixture to increase efficiency a. CAD cellĪnswer : D What devices that will shut burner down in case the burner doesn't fire a. CAD cellĪnswer : B What generates approximately 10,000 volts needed for spark a. What is the first thing the service technician should do? Answer :Make sure the cad cell is clean, check for alignment, adjust for correct fire What meters flow of fuel oil into the chamber a. Relay will ignite, run for about ninety seconds, and cut off. What would happen if the narrow sprayĪngle nozzle were used in a round combustion chamber? Answer :Not efficient, not enough heat. Answer :Using Pressure to change liquid to small particles of Vapor. What tests can a technician perform on an oilįurnace that will check the combustion efficiency? Answer :Draft,Smoke,Net Temperature (flue stack),Carbon Dioxide. Answer :Orifice,Orifice Disc,Body,Retainer,Filter & Distributor. Name the six parts of an oil burner nozzle. Up-flow air is drawn in at the bottom & forced out across the heat exchanger & out the Top. Answer :Screens How can a technician tell the differenceīetween an up-flow furnace and a down-flow furnace? Answer :Down-flow air is drawn in from the top & forced out at the bottom duct work is located below theįurnace. The inlet to prevent particulate matter fromĮntering the pump. On gun-type burners, _ and _ Answer :Single Stage,Two Stage_ Fuel pumps are equipped with _ at Answer :100 There are two main types of oil pumps used Pressure burners, as the oil is delivered through the burner at a pressure of about _ psi. Answer :Carbon Monoxide Modern oil burners are referred as high Answer :Oil DE-aerator _ is a colorless and odorless gas. That allows a one-pipe system to function as a two-pipe system. Answer : Fill ,Vent The _ is an oil piping component Answer :Copper,Wrought Iron or Steel _ and _ pipes should be pitched toward the tank opening to prevent the formation of oil traps. _,_ pipe connected with malleable fittings. Answer :Carbon Residue In a two _- configuration one pipe is the In a sample of oil after it is vaporized,Ĭhanged from a liquid to a vapor, by boiling it. Answer : Atomization When any product containing hydrogenĪnd/or carbon reacts with oxygen to release heat energy, the process is called ? Answer : Combustion_ The portion of a nozzle assembly that produces rotation of the oil spray is called the Answer : True The process of breaking up a liquid into fineĭroplets is called ?_. Answer : True Tank piping should be inspected regularly for Answer : True Tanks that are to be installed underground After several seasons, buried oil tanks are Answer : True The tangential slots in an oil burner nozzleĪre to control the volume of oil flow through the nozzle. Answer : False Oil burner nozzles are designed and rated atġ00 psig nozzle pressure. Answer : False For complete combustion and higherĮfficiency, the oil spray and the air flow off the blast tube both turn counter-clockwise. Answer : False Nozzles can be cleaned to remove anyĬarbonization by using a very fine wire brush. in the flue pipe before the draft controlĪnswer : B In a single-stage fuel oil pump, the oil is fed to in the flue pipe after the draft controlī. To make combustion efficiency tests, a hole
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