To burn one pound of fuel oil, it takes how many pounds of air? - CORRECT ANS✔✔ •14.4 lbs.
A layer of soot 1/16" thick will increase fuel consumption by (Fuel consumption increase by 2 % for each
1/32 of soot) - CORRECT ANS✔✔ 8%
When sizing a combustion chamber for a firing rate of 1.00 gph you should provide a minimum floor
space of (•20 square inches per 0.25 of GPH) - CORRECT ANS✔✔ •Between 80 to 100 square inches
The most common type of burner design in use today is the - CORRECT ANS✔✔ High pressure atomizing
Poor draft due to a faulty chimney may be improved by installing a good - CORRECT ANS✔✔ •Draft
inducer
The pressure differential produced by chimneys is best measured with a draft gauge in - CORRECT
ANS✔✔ Inches of water column
The most important draft measurement to be taken on any oil-fired unit is - CORRECT ANS✔✔ The
draft at the breech
, The draft over the fire
The proper location to install a draft inducer is - CORRECT ANS✔✔ •In the flue pipe between the draft
regulator and the chimney
Using combustion test instruments to measure the composition and temperature of the flue gas as they
leave the heating unit will indicate the - CORRECT ANS✔✔ Steady state efficiency
The holes that are provided in the flue pipe for combustion testing must be - CORRECT ANS✔✔
•Between the heating unit and the draft regulator
When using a pump type smoke tester, ten full strokes are necessary to - CORRECT ANS✔✔ •Draw the
proper amount of flue gas past the paper
The fluid in a CO2 tester is good for about how many tests? - CORRECT ANS✔✔ For about 400 tests
When applying current through a conductor that is wound in coil, the magnetic lines of force created are
used in - CORRECT ANS✔✔ •Solenoid valve
. Relay
.Electric Motor
If in an average 15-amp residential heating circuit, the fuse occasionally blows, you should - CORRECT
ANS✔✔ Install a 15-amp breaker
To determine the "electrical potential" available at any given point in a circuit you should use a: -
CORRECT ANS✔✔ Voltmeter
Oil burner ignition systems normally operate at what primary voltage - CORRECT ANS✔✔ 120 volts
Oil burner ignition transformers operate at what secondary voltage range - CORRECT ANS✔✔ 10,000 to
14,000
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