Oil burner's test questions 1-200- Questions and
Answers
The following conditions or elements affect choosing the correct nozzle spray pattern
Correct Ans-•Air-oil mixing design of burner
•. Shape of the chamber
Which condition affects nozzle spray droplet size? Correct Ans-Fuel Pump Pressure
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
, Oil burner's test questions 1-200- Questions and
Answers
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's test questions 1-200- Questions and
Answers
Oil burner ignition transformers operate at what secondary voltage range Correct Ans-
10,000 to 14,000
In which type of system does the ignition transformer stay on for the full time the burner is
running? Correct Ans-•Intermittent
•b. Constant
A typical ignition transformer is of what type? Correct Ans-step up
During a normal start-up, when current is applied to a split phase burner motor with an open
centrifugal switch Correct Ans-•The motor will not start
The switch opens when the motor has almost reached full speed. Correct Ans-•Centrifugal
The most speed(s) used in American made burners have been: Correct Ans-3450 rpm
Because burner fans have beveled blades any dirt or lint in the blade will Correct Ans-•a.
Reduce the amount of air for combustion
The fan-limit control on a warm air unit is used to: Correct Ans-•Shut off the burner at a
predetermined temperature
•Start the blower at a predetermined temperature Stop the blower at a predetermined
temperature
In all residential oil heating systems, the high limit control must be Correct Ans-Line
voltage and wired in series with the primary control
Low voltage thermostats are more widely used than line voltage thermostats because
Correct Ans-They are more sensitive to ambient temperature
Answers
The following conditions or elements affect choosing the correct nozzle spray pattern
Correct Ans-•Air-oil mixing design of burner
•. Shape of the chamber
Which condition affects nozzle spray droplet size? Correct Ans-Fuel Pump Pressure
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
, Oil burner's test questions 1-200- Questions and
Answers
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's test questions 1-200- Questions and
Answers
Oil burner ignition transformers operate at what secondary voltage range Correct Ans-
10,000 to 14,000
In which type of system does the ignition transformer stay on for the full time the burner is
running? Correct Ans-•Intermittent
•b. Constant
A typical ignition transformer is of what type? Correct Ans-step up
During a normal start-up, when current is applied to a split phase burner motor with an open
centrifugal switch Correct Ans-•The motor will not start
The switch opens when the motor has almost reached full speed. Correct Ans-•Centrifugal
The most speed(s) used in American made burners have been: Correct Ans-3450 rpm
Because burner fans have beveled blades any dirt or lint in the blade will Correct Ans-•a.
Reduce the amount of air for combustion
The fan-limit control on a warm air unit is used to: Correct Ans-•Shut off the burner at a
predetermined temperature
•Start the blower at a predetermined temperature Stop the blower at a predetermined
temperature
In all residential oil heating systems, the high limit control must be Correct Ans-Line
voltage and wired in series with the primary control
Low voltage thermostats are more widely used than line voltage thermostats because
Correct Ans-They are more sensitive to ambient temperature
