Oil Furnace Heating Practice Tests Questions and Answers Already Passed

Oil Furnace Heating Practice Tests Questions and Answers Already Passed 1. Question 1 points Fuel Pump fail to prime when Suction inlet vacuum is greater than _______ of vacuum 20 inches 30 inches 15 inches 25 inches 15 inches Which of the following is used to ignite the fuel oil in the heating system: Step down transformer Step up transformer Step up transformer Air enters the heating system in following order: from combustion chamber, to turbulator, to draft tube from draft tube, to turbulator, to combustion chamber from turbulator, to turbulator, to combustion chamber from draft tube, to turbulator, to combustion chamber Malfunctions in the heating system cause primary safety control to _______ electrical resistance across the cell until the burner is automatically shut off. reduce increase increase A ______ carbon dioxide content is usually caused by insufficient draft or an overfired burner low high high A _______ stack thermometer is generally used to measure the flue gas temperature in oil heating system: 200/2000°F 100/1000°F 200/1000°F 100/2000°F 200/1000°F Delayed ignition is mainly traced to a problem with which of the following: Stoker Electrodes Burner Nozzle Oil pump Electrodes The advantage of the _______ of oil spray pattern is more stable operating under the same conditions and at the same flow rate.