Oil Burners license test Exam Questions and Answers Rated A+

Minimum net stack temperature of above 350°F must be maintained - ANSWER-To avoid condensation and maintain draft The primary control must be capable of reacting to - ANSWER-The presence or absence of flame The two principal combustible elements in number two fuel oil are nitrogen and carbon - ANSWER-False If a stack type controller fails you must - ANSWER-Replace it with an approved type controller When wiring multiple circulators they should be wired in - ANSWER-Parallel Oil viscosity problems can be solved by installing a ———— nozzle and increasing oil pressure - ANSWER-Smaller Residential burner ignition systems normally operate at what primary voltage - ANSWER-120 A Call for too much heat on a hot water heating job may be caused by - ANSWER-Thermostat wire is shorted out High viscosity problems brought on by cold oil may be minimized by - ANSWER-All of the above From whom must you obtain a permit for removal of a fuel oil storage tank - ANSWER-The head of the local fire department If a high limit is installed to prevent high boiler water temperature what is the function of the low limit - ANSWER-To maintain temperature for domestic hot water It is best to connect flue units as a one pipe system instead of a two pipe system because - ANSWER-One pipe leads to longer filter life and eliminates leaking retur