HVAC Oil Burner Exam - Questions and Answers Insulated with ceramic material to prevent electrical ground Electrodes 8 gallons of oil how many BTUs
... [Show More] would you have 1,020,000 What color is #2 fuel oil? Red What material is in a cad cell that allows it to respond to light? Camum sulfide What is the response that a cad cell makes to change in light? Produces more resistance less light, less resistance more light What would the symptoms be of a dirty cad cell? Burner wouldn't start What would the result of access oil in the combustion chamber be if it were ignited Overfiring What would the symptoms of an open cad cell be? Burner would not start What would cause a cad cell to become dirty? Soot What is the pressure at which oil burner nozzles are rated? 100 psi Why should fuel oil not be spilled? Odor and could start a fire What was the size of the pressure tap in the oil pump for the high-pressure gauge? 1/4, 1/8 depending on the unit What was the size of the pressure tap in an oil pump for the low pressure gauge? Same as three, 1/4 or 1/8 On average, how many BTUs are there in a gallon of fuel oil 140,000 What is the typical Efficiency conventual oil fired furnace 80% When is a two pipe oil delivery system recommended for an oil burner? Fuel tank is below the burner How far can and oil burner pump vertically without an auxiliary pump 15 ft Name the two places that oil is filtered before it is burned Fuel pump and nozzle What is the heat content of a gallon of No.2 fuel oil? 140,000 BTUs In what unit of heat is an oil furnace capacity expressed BTU/H Are oil furnace capacities expressed in output or input? Output What is the purpose of a two pipe oil supply system? Eliminates air and no bleeding How is the blower motor started in a typical oil fired furnace Temperature What is the typical voltage for an oil fired furnace 115 What is the typical control voltage for an oil fired furnace 24 volts What is the function of the limit control for an oil fired furnace Shut off burner from overheating What is the function of the stack switch on and oil fired furnace? Makes sure combustion is taking place What is the function of a cad cell on an oil fired furnace Senses light from the flame Why should you be sure that no oil is left on any part, in addition to its being a possible fire hazard? Odor [Show Less]