Oil burner test 2025 Questions and
Answers
Number 2 oil has what btu's - --CORRECT ANSWER--140,000
Which fuel oil has the lowest viscosity - --CORRECT ANSWER--#1
Fuel oil is made up of mostly - --CORRECT ANSWER--Hydrogen/carbon
Flash point of #2 fuel oil is - --CORRECT ANSWER--115 degrees
Combustion triangle - --CORRECT ANSWER--oxygen, heat, fuel
vent pipes must be atleast ______ feet above or _______ feet below any window
or door. they must also be _____ get away from property line to prevent sewer gas
from drifting to neighbors house - --CORRECT ANSWER--3 feet above or 5 feet
below door or window.
3 feet from property line
To make combustion efficiency test, a whole must be made - --CORRECT
ANSWER--In the flue pipe before the draft control
What three colors does the NEC allowed to be used for ground wire? - --
CORRECT ANSWER--Green, bare of green with yellow stripe
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, Is zero smoke and low CO2 or high 02 reading at the flue pipe and over the fire is
an indication of what - --CORRECT ANSWER--Too much air
A fan attached to the flu pipe at the exit terminal from the building, to pull the
products of combustion out of the heating unit - --CORRECT ANSWER--Power
venting
Static pressure created by the burner fan, pushes the combustion gases through the
heat exchanger and out of the building - --CORRECT ANSWER--Direct venting
Expansion tanks are needed, and what type of system - --CORRECT ANSWER--
Hot water
A direct vented boiler is a positive pressure system, and no chimney is needed - --
CORRECT ANSWER--True
What are nozzles rated at? - --CORRECT ANSWER--Nozzles are rated in gallons
per hour at 100 pounds pressure
Zone control valves are controlled by - --CORRECT ANSWER--Thermostats
When a nozzle breaks fuel down into tiny droplets to create enough service area
for oxygen to better surround droplets - --CORRECT ANSWER--Atomizing
The thickness of fuel and resistance to flow - --CORRECT ANSWER--Viscosity
The temperature at which waxy Joe crystals form in the oil - --CORRECT
ANSWER--Cloud point
....COPYRIGHT ©️ 2025 ALL RIGHTS RESERVED...TRUSTED & VERIFIED 2
Answers
Number 2 oil has what btu's - --CORRECT ANSWER--140,000
Which fuel oil has the lowest viscosity - --CORRECT ANSWER--#1
Fuel oil is made up of mostly - --CORRECT ANSWER--Hydrogen/carbon
Flash point of #2 fuel oil is - --CORRECT ANSWER--115 degrees
Combustion triangle - --CORRECT ANSWER--oxygen, heat, fuel
vent pipes must be atleast ______ feet above or _______ feet below any window
or door. they must also be _____ get away from property line to prevent sewer gas
from drifting to neighbors house - --CORRECT ANSWER--3 feet above or 5 feet
below door or window.
3 feet from property line
To make combustion efficiency test, a whole must be made - --CORRECT
ANSWER--In the flue pipe before the draft control
What three colors does the NEC allowed to be used for ground wire? - --
CORRECT ANSWER--Green, bare of green with yellow stripe
....COPYRIGHT ©️ 2025 ALL RIGHTS RESERVED...TRUSTED & VERIFIED 1
, Is zero smoke and low CO2 or high 02 reading at the flue pipe and over the fire is
an indication of what - --CORRECT ANSWER--Too much air
A fan attached to the flu pipe at the exit terminal from the building, to pull the
products of combustion out of the heating unit - --CORRECT ANSWER--Power
venting
Static pressure created by the burner fan, pushes the combustion gases through the
heat exchanger and out of the building - --CORRECT ANSWER--Direct venting
Expansion tanks are needed, and what type of system - --CORRECT ANSWER--
Hot water
A direct vented boiler is a positive pressure system, and no chimney is needed - --
CORRECT ANSWER--True
What are nozzles rated at? - --CORRECT ANSWER--Nozzles are rated in gallons
per hour at 100 pounds pressure
Zone control valves are controlled by - --CORRECT ANSWER--Thermostats
When a nozzle breaks fuel down into tiny droplets to create enough service area
for oxygen to better surround droplets - --CORRECT ANSWER--Atomizing
The thickness of fuel and resistance to flow - --CORRECT ANSWER--Viscosity
The temperature at which waxy Joe crystals form in the oil - --CORRECT
ANSWER--Cloud point
....COPYRIGHT ©️ 2025 ALL RIGHTS RESERVED...TRUSTED & VERIFIED 2
