Oil Furnace Troubleshooting Study Guide Questions And Correct Answers

What is the common operating pressure of a high pressure oil boiler? {Ans: 100 PSIG}How is a delayed oil valve wired in a heating circuit? {Ans: it is connected across terminals 2 and 3 on a stack mount relay}Technician B says that the size of an air vent on an oil storage tank is 1 1/2". Which tech is right? {Ans: Technician B}A tech is servicing an oil-fired furnace that uses a cad-cell primary control. He notices that the control locks out after approximately 45s. Which of the following can cause this to happen? {Ans: The cad-cell is reading more than 1,600 ohms of resistance in the light}A tech servicing an oil furnace that uses a stack mount relay notices that the burner motor is not operating. What two terminals must he place his voltmeter across to test for output voltage from the control to the burner motor? {Ans: terminals 2 and 3}when troubleshooting an oil-fired furnace that has an oil delivery problem, what are three tests that can be performed? {Ans: Test oil pump pressure, burner motor operation, and the nozzle assembly}