Oil Burners Study Guide 32 Latest Update with Verified Solutions

Oil Burners Study Guide 32 Latest Update with Verified Solutions Modern oil burners are referred to as high-pressure burners, as the oil is delivered through the burner at a pressure of about _____ psi. 100 psi The process of breaking up a liquid into fine droplets is called _____. atomization _____ is the amount of carbon left in a sample of oil after it is vaporized, changed from a liquid to a vapor, by blending it. Carbon residue The portion of a nozzle assembly that produces rotation of the oil spray is called the _____. swirl chamber Oil lines can be constructed of _____, _____ or _____ pipe connected with malleable fittings. wrought iron, steel or brass If a technician inspects the interior of a combustion chamber and finds large quantities of unburned oil, he would correctly conclude that _____. incomplete combustion is taking place. The CAD cell is a safety device that uses which of the following to prove ignition? unknown A condensing oil furnace operates at a higher efficiency because part of the heat output is _____. latent heat To make combustion efficiency test, a hole must be made _____. unknown What would happen if the narrow spray angle nozzle were used in a round combustion chamber? unknown When the oil supply is above the oil burner pump, the pump and supply would normally be a _____. single stage pump An auxiliary tank and booster pump system is required if the oil supply is _____ below the oil burner pump. 15ft or more Define atomization: The process of breaking down the liquid into fine droplets An oil burner equipped with the CAD cell relay will ignite, run for about ninety seconds, and cut off. What is the first thing the service technician should do? Clean the cell. The grade of fuel used in residential and light commercial units is _____. #2 (diesel) Improper combustion can lead to _____. unknown The number engraved on the nozzle indicates _____. the amount of fuel it will deliver. The stack switch or stack relay _____. is a safety switch that shuts down the boiler if it does not sense heat in the flue box. Creates turbulence in the air-oil mixture to increase efficiency. flame retention ring insulated with ceramic to prevent electrical ground.