QUESTIONS AND ANSWERS GUARANTEE A+
✔✔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