Oil Burners license test Questions and Answers

The main function of the primary control is: - Answer- Locking out on safety in the event of flame failure Power must be provided to an electric blower control board on terminals: - Answer- L1 and L2 Once a PSC motor starts - Answer- The centrifugal switch turns off the electricity to the capacitor and the start windings Materials who's electrons are so loosely bound that they can be persuaded to move with very little pressure allowing electricity to flow are called - Answer- Conductors Oil burners can make CO even when no smoke is present - Answer- True Corrosion in the flu pipe may occur if - Answer- Flue gas temperature is below the dewpoint and sulfur oxide's combine with water To avoid condensing and the flu pipe and oil fired appliance should have a minimum growth stock temperature of - Answer- 350°F All persons assisting and working under the supervision of a person holding a certificate as an oil burner technician must hold current apprentice certificates issued by Department of fire services - Answer- True What size pipe is used to cross connect tank outlets piping - Answer- 1/2 inch Fuel return piping from an appliance shall - Answer- Enter the top of the tank Delayed ignition may be caused by - Answer- Unvented pressure regulator Installation of oil safety valves and oil pressure reducing valve - Answer- Reduces the chance of a return line leak What is an installation - Answer- Complete and ready for operation of any oil burning appliance Energizing the ignition circuit during the entire burn cycle reduces - Answer- Ignition component life Fuel can be transferred from a tank to an appliance by pressurizing the tank - Answer- False What device must be equipped with an air proving switch - Answer- Both, draft inducers and power-venters What is a safety control - Answer- Any control used to prevent unsafe operation of the controlled equipment A non-resident steam or hot water boiler having a minimum safety relief valve capacity over 200,000 BTU/hr requires certificate of inspection from the department of fire services - Answer- Prior to the initial firing, every 3 years after What is the closest distance a supply tank can be to the burner - Answer- 5 feet Doing a combustion pretest on and oil burning appliance will not tell you anything this is why they generally are performed - Answer- False What is the minimum oil supply line size for a residential system - Answer- 3/8 inch A cad cell primary control can lock out safety because - Answer- All of the above- dirty, faulty, not sensing flame As heating oil gets colder it's viscosity thickens: - Answer- Increase The purpose of the oil burner nozzle is to: - Answer- Atomize, pattern and meter the oil The primary control must be capable of - Answer- All of the above A decrease in CO2 with an increase in excess air will give a drop in stack temperature - Answer- True 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