Unit 32 Oil Heat Exam | Actual Questions and Answers Latest Updated
2024/2025 (Graded A+)
If a technician inspects the interior of a
combustion chamber and finds large quantities of unburned oil, he would correctly conclude that ____.
- ✔✔The stack switch may be defective and the primary control unit may be defective
A special tool has been designed to help
remove and install nozzles from the burner. It is called a nozzle wrench and it ____. - ✔✔Has an outer
wrench that holds the burner in place, while the inner wrench holds the nozzle and minimize the chance
of cracking the porcelain
The number engraved on the nozzle indicates
____. - ✔✔How many gallons of oil per hour the nozzle will deliver at a given input pressure
Improper combustion can lead to ____. - ✔✔Excessive carbon monoxide production, smoke condition
around furnace, and wasted oil
The grade of fuel usually used in residential
and light commercial units is ____. - ✔✔No. 2
When the oil supply is above the oil burner
pump, the pump and supply would normally be a ____. - ✔✔Single-stage pump, one pipe system
An auxiliary tank and booster pump system is
required if the oil supply is ____ below the oil burner pump. - ✔✔15 feet or more
The CAD cell is a safety device that uses
which of the following to prove ignition? - ✔✔Light in the combustion chamber
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