1|Page
MASSACHUSETTS OIL BURNER EXAM AND
STUDY GUIDE ALL QUESTIONS AND CORRECT
DETAILED ANSWERS TOP RATED VERSION
FOR 2025-2025 ALREADY A GRADED AND
EXPERT APPROVED | NEW AND REVISED
Low boiler water temperature in a hydronic hot water system may be
caused by? - ANSWER- Undersized oil burner nozzles
Delayed opening oil valves are used to? - ANSWER- Allow oil pump to
come up to speed
If a steam boiler is to be installed with an automatic feeder it must also
have: - ANSWER- A backflow prevention device
How can a damaged heat exchanger be detected on a forced warm air
system? - ANSWER- With a smoke trace candle
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If a high limit is installed to prevent high boiler water temperature, what
is the function of the low limit? - ANSWER- To maintain temperature
for domestic hot water
On a steam system, a plugged siphon loop can have what affect on the
heating system? - ANSWER- Insufficient heat in the living space
On a triple acting aquastat a minimum of 20 degrees is recommend
between the high and low limit, this will prevent? - ANSWER- The
boiler going off on high limit before reaching the minimum circulator
temperature
An advantage of flame retention burner is - ANSWER- Their high static
pressure enables boilers and furnaces with tighter more efficient heat
exchange passages
The key final adjustment for most oil burners is - ANSWER-
Combustion air
Dirt or lint buildup in the bevel of the burner fan blades will -
ANSWER- Reduce the amount of combustion air
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To change the air ratio for different firing rates with an adjustable head
burner you - ANSWER- Adjust the position of the drawer assembly in
the Air tube
All petroleum products are chemical compounds of - ANSWER-
Hydrogen and carbon
1 gallon of #2 oil contains approximately how many BTU's? -
ANSWER- 140,000 BTU's
Flashpoint of a fuel is an indication of - ANSWER- The lowest
temperature at which the fuel will flash but not continue to burn
The pour point of #2 oil - ANSWER- Can be lowered by blending with
kerosene, can be lowered with fuel additives, and is the lowest
temperature at which it will flow
Maximum fuel allowed without a license - ANSWER- 10,000 gallons
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Is heating oil gets colder its viscosity (thickness): - ANSWER- Increases
Sulfuric acid in combustion gases can: - ANSWER- Damon's the flue
lines, it holds in the flue pipe, and create a scale buildup in the heat
exchanger
The home for bacterial growth and sludge in the bottom of the oil tank is
- ANSWER- Water
To ensure clean, uncontaminated fuel reaches the oil burner you must -
ANSWER- Install tanks properly, regularly inspect and fix minor
defects before they lead to major problems, and install a quality oil filter
Water in oil tanks come from - ANSWER- Condensation, loose or
missing fill and vent caps, and failing to drain water from a tank before
installation
When installing an oil tank be sure: - ANSWER- The fill and vent lines
are pitched towards the tank, to install a vent alarm and a tank gauge,
and to install an oil filter
MASSACHUSETTS OIL BURNER EXAM AND
STUDY GUIDE ALL QUESTIONS AND CORRECT
DETAILED ANSWERS TOP RATED VERSION
FOR 2025-2025 ALREADY A GRADED AND
EXPERT APPROVED | NEW AND REVISED
Low boiler water temperature in a hydronic hot water system may be
caused by? - ANSWER- Undersized oil burner nozzles
Delayed opening oil valves are used to? - ANSWER- Allow oil pump to
come up to speed
If a steam boiler is to be installed with an automatic feeder it must also
have: - ANSWER- A backflow prevention device
How can a damaged heat exchanger be detected on a forced warm air
system? - ANSWER- With a smoke trace candle
,2|Page
If a high limit is installed to prevent high boiler water temperature, what
is the function of the low limit? - ANSWER- To maintain temperature
for domestic hot water
On a steam system, a plugged siphon loop can have what affect on the
heating system? - ANSWER- Insufficient heat in the living space
On a triple acting aquastat a minimum of 20 degrees is recommend
between the high and low limit, this will prevent? - ANSWER- The
boiler going off on high limit before reaching the minimum circulator
temperature
An advantage of flame retention burner is - ANSWER- Their high static
pressure enables boilers and furnaces with tighter more efficient heat
exchange passages
The key final adjustment for most oil burners is - ANSWER-
Combustion air
Dirt or lint buildup in the bevel of the burner fan blades will -
ANSWER- Reduce the amount of combustion air
,3|Page
To change the air ratio for different firing rates with an adjustable head
burner you - ANSWER- Adjust the position of the drawer assembly in
the Air tube
All petroleum products are chemical compounds of - ANSWER-
Hydrogen and carbon
1 gallon of #2 oil contains approximately how many BTU's? -
ANSWER- 140,000 BTU's
Flashpoint of a fuel is an indication of - ANSWER- The lowest
temperature at which the fuel will flash but not continue to burn
The pour point of #2 oil - ANSWER- Can be lowered by blending with
kerosene, can be lowered with fuel additives, and is the lowest
temperature at which it will flow
Maximum fuel allowed without a license - ANSWER- 10,000 gallons
, 4|Page
Is heating oil gets colder its viscosity (thickness): - ANSWER- Increases
Sulfuric acid in combustion gases can: - ANSWER- Damon's the flue
lines, it holds in the flue pipe, and create a scale buildup in the heat
exchanger
The home for bacterial growth and sludge in the bottom of the oil tank is
- ANSWER- Water
To ensure clean, uncontaminated fuel reaches the oil burner you must -
ANSWER- Install tanks properly, regularly inspect and fix minor
defects before they lead to major problems, and install a quality oil filter
Water in oil tanks come from - ANSWER- Condensation, loose or
missing fill and vent caps, and failing to drain water from a tank before
installation
When installing an oil tank be sure: - ANSWER- The fill and vent lines
are pitched towards the tank, to install a vent alarm and a tank gauge,
and to install an oil filter
