Oil Furnace Troubleshooting Exam Questions and Answer

What is the heating value of number 2 heating oil? - ANSWER-140,000 Btu/gallon What is the common operating pressure of a high pressure oil boiler? - ANSWER-100 PSIG What is the secondary voltage of the ignition transformer used on a high pressure oil burner? - ANSWER-10,000 volts What is the purpose of an electrode in a high-pressure gun burner? - ANSWER-It is used to carry the spark to the point of ignition what is the measurement of the spark gap on an electrode assembly? - ANSWER-1/8" The capacity of a high pressure oil burner nozzle is rated in? - ANSWER-gallons per hour What are the three different spray patterns that are used in a nozzle? - ANSWER-hollow, semihollow, and solid The spray angle of an oil nozzle ranges from? - ANSWER-30 degrees to 90 degrees What type of motor is used on a residential high pressure oil burner? - ANSWER-shaded pole What is the speed of the burner motor on a high pressure gun burner? - ANSWER-1,725 rpm