Massachusetts Oil burner Practice Questions and Answers correct

Massachusetts Oil burner Practice Questions and Answers correct The cross connection between two supply tanks shall not exceed? 660 gallons When is an automatic draft control not required? When the equipment is designed to control the draft. Combustion performance testing can indicate: Improper air oil mixture, too much combustion air, and low pump pressure. If a second oil-burning appliance is installed in a single chimney, you must insure: Sufficient draft is available for safe operation of all connected equipment. Delayed ignition can be caused by: Weak ignition transformer You should replace the oil burner nozzle with: The manufacturers recommended nozzle spray pattern and spray angle. Viscosity problems can be corrected by: Decreasing the nozzle size and increasing the pump pressure accordingly The minimum operating pressure of an oil pump is: 100 PSI If a stack relay fails you, must? Replace it with an approved type controller Aquastats are normally found on what type of heating systems? Hydronic Airstats are found on what type of heating systems? Forced warm air systems Under sized returns on a warm air system can result in what? Short cycling of the oil burner Incorrect nozzle selection in regards to gallon per hour, can result in what problems in a steam system? Some radiators not heating quickly enough Low boiler water temperature in a hydronic hot water system may be caused by? Undersized oil burner nozzles Delayed opening oil valves are used to? Allow oil pump to come up to speed If a steam boiler is to be installed with an automatic feeder it must also have: A backflow prevention device How can a damaged heat exchanger be detected on a forced warm air system? With a smoke trace candle If a high limit is installed to prevent high boiler water temperature, what is the function of the low limit? To maintain temperature for domestic hot water On a steam system, a plugged siphon loop can have what affect on the heating system? Insufficient heat in the living space On a triple acting aquastat a minimum of 20 degrees is recommend between the high and low limit, this will prevent? The boiler going off on high limit before reaching the minimum circulator temperature An advantage of flame retention burner is Their high static pressure enables boilers and furnaces with tighter more efficient heat exchange passages The key final adjustment for most oil burners is Combustion air Dirt or lint buildup in the bevel of the burner fan blades will Reduce the amount of combustion air To change the air ratio for different firing rates with an adjustable head burner you Adjust the position of the drawer assembly in the Air tube All petroleum products are chemical compounds of Hydrogen and carbon 1 gallon of #2 oil contains approximately how many BTU's? 140,000 BTU's Flashpoint of a fuel is an indication of The lowest temperature at which the fuel will flash but not continue to burn The pour point of #2 oil Can be lowered by blending with kerosene, can be lowered with fuel additives, and is the lowest temperature at which it will flow Maximum fuel allowed without a license 10,000 gallons Is heating oil gets colder its viscosity (thickness): Increases Sulfuric acid in combustion gases can: Damon's the flue lines, it holds in the flue pipe, and create a scale buildup in the heat exchanger The home for bacterial growth and sludge in the bottom of the oil tank is Water To ensure clean, uncontaminated fuel reaches the oil burner you must Install tanks properly, regularly inspect and fix minor defects before they lead to major problems, and install a quality oil filter Water in oil tanks come from Condensation, loose or missing fill and vent caps, and failing to drain water from a tank before installation When installing an oil tank be sure: The fill and vent lines are pitched towards the tank, to install a vent alarm and a tank gauge, and to install an oil filter Oil lines buried in concrete should be Sleeved in plastic or PVC pipe with no fittings below the floor Fuel units (oil pumps) preform the following functions Move oil from the tank to the burner and deliver oil at a constant regulated pressure to the nozzle The best way to clear a clogged oil line is to Use a hand pump to pull the blockage out If the oil level in the tank is 4 feet below the fuel unit in 10 feet away, the approximate vacuum should be 5 - 6 inches