Fuel Oil
What is the difference between a distillate oil and a residual oil?
A distillate is produced by vaporizing during the refining process; a residual is what is left after all the distillates have been vaporized.
How are nozzles rated?
By the spray angle, the cone shape - solid or hollow, and the gallons per hour that will pass through the nozzle.
How does a cad cell sense the flames?
By the light.
What is oil viscosity?
Viscosity is a measure of the thickness of the oil
List the available warm air oil fired furnace configurations.
Upflow, downflow, horizontal, low-boy, muti-position
What does the primary control do?
The primary control operates the burner motor and ignition transformer and provides flame safety.
The grade of fuel oil most commonly used in residential oil-fired furnaces is:
Number 2
How is an oil furnace heat exchanger shaped?
Like a drum
Which part of the nozzle produces the correct firing rate?
Orifice
The heating capacity of number 2 fuel oil is approximately:
140,000 BTU per gallon
What is the typical output pressure of an oil-fired furnace oil pump?
100 psi
What is the purpose of the second line on a two-pipe oil delivery system?
To send the oil that was pumped but not burned back to the tank
Which grade of fuel oil has the highest viscosity?
Number 6
Sealed combustion oil furnaces use:
High static oil burners
The output pressure of a high-pressure oil pump used in residential oil-fired furnaces is:
100 to 200 psi