Oil Furnace Heating Practice Tests Quizzes & Answ..

Oil Furnace Heating Practice Tests Questions And Answers
1. Question 1 points
Fuel Pump fail to prime when Suction inlet vacuum is greater than _______ of
vacuum

20 inches
30 inches
15 inches
25 inches
15 inches
Which of the following is used to ignite the fuel oil in the heating system:

Step down transformer
Step up transformer
Step up transformer
Air enters the heating system in following order:

from combustion chamber, to turbulator, to draft tube

from draft tube, to turbulator, to combustion chamber

from turbulator, to turbulator, to combustion chamber
from draft tube, to turbulator, to combustion chamber
Malfunctions in the heating system cause primary safety control to _______
electrical resistance across the cell until the burner is automatically shut off.

reduce
increase
increase
A ______ carbon dioxide content is usually caused by insufficient draft or an
overfired burner

low
high
high
A _______ stack thermometer is generally used to measure the flue gas
temperature in oil heating system:

200/2000°F
100/1000°F
200/1000°F
100/2000°F
200/1000°F
Delayed ignition is mainly traced to a problem with which of the following: