GAS CFESA EXAM QUESTIONS AND
CORRECT ANSWERS LATEST 2025–2026
The two primary functions of the flue are ?
A) The remove combustion byproducts and heat from the equipment
B) To create a draft to pull in secondary air and remove the byproducts
form the combustion chamber
C) To create a draft to keep the burners cool and remove byproducts from the
cooking area
D) To remove the excessive heat to keep the burners, and cooking
surface from overheating - answer>>>B
To solve unusual venting problems like negative pressure, high
winds, long vents, the installe should use ?
A) A larger size vent pipe
B) Vent outlets
C) Vent top turbines
D) A draft hood - answer>>>D
What is a bypass flame?
A) The smallest flame that will keep the burners lit after the gas
thermostat has reached the temperature set point
B) A flame that is 3/8" tall after the thermostat shuts off
C) A flame left on the burner to keep the pilot form going out
D) A flame to a special part of the burner after the main burner goes off -
, answer>>>A
The primary purpose of a vent on a regulator is to:
A) Vent leaking gas
B) Allow diaphragm movement
C) Allow high pressure
D) Monitor flow - answer>>>B
A properly burning infrared ceramic burner will look ?
A) Blue
B) Bright reddish orange
C) Dull red
D) Blue with a tint of orange - answer>>>B
Vent lines are required on regulators above 1" and must be vented:
A) A pilot flame
B) An open flame within 2 feet
C) A working flue or exhaust system
D) The outside atmosphere, above the snow line - answer>>>D
The purpose of a draft hood/draft diverter is ?
A) To prevent drafts from entering the burner compartment that comes
from the power cent hoods.
B) To prevent the combustion chamber from overheating, and allowing
air to come down the vent pipe into the room.
C) To allow the flue to control the amount of secondary air drawn in
,instead of the vent pipe, and to prevent air from coming back down
the vent into the combustion chamber
D) To allow the vent pipe to control the amount of secondary air
drawn into the combustion chamber as designed by its height above
the hood. - answer>>>C
What is the proper flame current for an ignition module?
A) Always 3 or more microamps
B) Always ¼ or more microamps
C) It depends on the module manufacturer
D) Always 2 or more microamps - answer>>>C
Primary air is the air ?
A) That surrounds the burner
B) That enters the burner though the venture
C) Is the air that is vented through the exhaust system
D) That must always have a pressure greater than the incoming gas pressure -
answer>>>B
Every time a gas fired convection oven shuts off the gas flow to the
burners there is a loud pop. The oven is rated for and using LP gas. The
noise is called , and can be reduced by the burner air shutters more.
A) Extinction pop, opening
B) Delayed ignition, closing
C) Delayed ignition, opening
D) Extinction pop and by closing - answer>>>D
, If a leak develops in an LP gas line, where is the gas likely to go?
A) Out the exhaust system
B) To the lowest level in the room
C) Up to the ceiling area
D) Out of the kitchen under the door - answer>>>B
The approximate amount of BTU's produced by burning one cubic foot of
natural gas is?
A) 10,000
B) 2500
C) 750
D) 1000 - answer>>>D
The normal operating pressure of LP gas is ?
A) 10-15 psi
B) 3-7 psi
C) 10-11 in WC"
D) 3-7 in WC" - answer>>>C
The normal operating pressure of a typical natural gas type burner is
approximately:
A) 15-25 psi
B) 3-4 psi
C) 10-11 in WC"
D) 3.5-7 in WC" - answer>>>D
CORRECT ANSWERS LATEST 2025–2026
The two primary functions of the flue are ?
A) The remove combustion byproducts and heat from the equipment
B) To create a draft to pull in secondary air and remove the byproducts
form the combustion chamber
C) To create a draft to keep the burners cool and remove byproducts from the
cooking area
D) To remove the excessive heat to keep the burners, and cooking
surface from overheating - answer>>>B
To solve unusual venting problems like negative pressure, high
winds, long vents, the installe should use ?
A) A larger size vent pipe
B) Vent outlets
C) Vent top turbines
D) A draft hood - answer>>>D
What is a bypass flame?
A) The smallest flame that will keep the burners lit after the gas
thermostat has reached the temperature set point
B) A flame that is 3/8" tall after the thermostat shuts off
C) A flame left on the burner to keep the pilot form going out
D) A flame to a special part of the burner after the main burner goes off -
, answer>>>A
The primary purpose of a vent on a regulator is to:
A) Vent leaking gas
B) Allow diaphragm movement
C) Allow high pressure
D) Monitor flow - answer>>>B
A properly burning infrared ceramic burner will look ?
A) Blue
B) Bright reddish orange
C) Dull red
D) Blue with a tint of orange - answer>>>B
Vent lines are required on regulators above 1" and must be vented:
A) A pilot flame
B) An open flame within 2 feet
C) A working flue or exhaust system
D) The outside atmosphere, above the snow line - answer>>>D
The purpose of a draft hood/draft diverter is ?
A) To prevent drafts from entering the burner compartment that comes
from the power cent hoods.
B) To prevent the combustion chamber from overheating, and allowing
air to come down the vent pipe into the room.
C) To allow the flue to control the amount of secondary air drawn in
,instead of the vent pipe, and to prevent air from coming back down
the vent into the combustion chamber
D) To allow the vent pipe to control the amount of secondary air
drawn into the combustion chamber as designed by its height above
the hood. - answer>>>C
What is the proper flame current for an ignition module?
A) Always 3 or more microamps
B) Always ¼ or more microamps
C) It depends on the module manufacturer
D) Always 2 or more microamps - answer>>>C
Primary air is the air ?
A) That surrounds the burner
B) That enters the burner though the venture
C) Is the air that is vented through the exhaust system
D) That must always have a pressure greater than the incoming gas pressure -
answer>>>B
Every time a gas fired convection oven shuts off the gas flow to the
burners there is a loud pop. The oven is rated for and using LP gas. The
noise is called , and can be reduced by the burner air shutters more.
A) Extinction pop, opening
B) Delayed ignition, closing
C) Delayed ignition, opening
D) Extinction pop and by closing - answer>>>D
, If a leak develops in an LP gas line, where is the gas likely to go?
A) Out the exhaust system
B) To the lowest level in the room
C) Up to the ceiling area
D) Out of the kitchen under the door - answer>>>B
The approximate amount of BTU's produced by burning one cubic foot of
natural gas is?
A) 10,000
B) 2500
C) 750
D) 1000 - answer>>>D
The normal operating pressure of LP gas is ?
A) 10-15 psi
B) 3-7 psi
C) 10-11 in WC"
D) 3-7 in WC" - answer>>>C
The normal operating pressure of a typical natural gas type burner is
approximately:
A) 15-25 psi
B) 3-4 psi
C) 10-11 in WC"
D) 3.5-7 in WC" - answer>>>D
