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Gas Fitter 2 Exam Practice Test 2026 – Test Bank &
Study Guide | Verified Questions and Answers |
Instant Download | Graded A+
A room heater installed in either a sleeping area or public area shall be:
A. direct vent only
B. equipped with a regulator
C. equipped with a fan
D. equipped with an on / off switch on the wall ......ANSWER......B
What type of vent must be used when the vent of a wall furnace will be
concealed in a partition wall?
A. B vent
B. L vent
C. BH vent
D. BW vent ......ANSWER......D
Single wall vent connectors:
A. may pass through floors, ceilings or roofs provided a metal thimble is
used
pg. 1
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B. may pass through floors, ceilings or roofs provided the required
minimum distance from combustible material is maintained
C. may pass through floors, ceilings or roofs provided they are insulated
D. shall not pass through floors, ceilings or roofs ......ANSWER......D
BW vent shall be used only with an approved:
A. decorative appliance
B. down flow furnace
C. revertible flue boiler
D. recessed wall furnace ......ANSWER......D
What must be done during the installation of a gas log fireplace?
A. Make sure there is a metal mesh screen in front of the fireplace
B. Secure the chimney damper in the open position
C. Install a pressure regulator
D. Install a metal chimney liner ......ANSWER......B
When can a certified hose be used to connect a construction heater to
temporary piping?
A. Only if a lever handle shut off valve is installed upstream of the
hose
B. Only if the hose is 15 feet long
C. Never ......ANSWER......A
pg. 2
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Which of the following is acceptable when a fireplace insert is installed?
A. A metal chimney linear
B. The existing fireplace flue
C. BW vent
D. A tile lined fireplace flue? ......ANSWER......A
An unvented infra-red heater can be installed in ________ application
A. A warehouse
B. A commercial building
C. An industrial building
D. All of the above ......ANSWER......D
Dirt pockets are required on:
A. Decorative appliances
B. Gas logs
C. Room heaters
D. None of the available choices ......ANSWER......D
What diameter and length of a dirt pocket is required when a drop line
is 3-inch diameter?
A. 3 inch diameter by 3 inches long
pg. 3
, 4|Page
B. 1 inch diameter by 3 inches long
C. 3/4 inch diameter by 3 inches long
D. 2 inch diameter by 3 inches long ......ANSWER......D
What type of room heater maybe installed in a bathroom?
A. Natural draft
B. Direct fired
C. Forced draft
D. Direct vent ......ANSWER......D
What safety control protects a steam boiler if the condensate pump
fails to return water to the boiler?
A. High pressure limit control
B. Low pressure limit control
C. Flame safeguard control
D. Low water cut off ......ANSWER......D
The relief valve for a residential low-pressure hot water boiler system
should be?
A. 14.7 psia
B. 15 psia
C. 30 psig
D. 30 psia ......ANSWER......C
pg. 4
Gas Fitter 2 Exam Practice Test 2026 – Test Bank &
Study Guide | Verified Questions and Answers |
Instant Download | Graded A+
A room heater installed in either a sleeping area or public area shall be:
A. direct vent only
B. equipped with a regulator
C. equipped with a fan
D. equipped with an on / off switch on the wall ......ANSWER......B
What type of vent must be used when the vent of a wall furnace will be
concealed in a partition wall?
A. B vent
B. L vent
C. BH vent
D. BW vent ......ANSWER......D
Single wall vent connectors:
A. may pass through floors, ceilings or roofs provided a metal thimble is
used
pg. 1
,2|Page
B. may pass through floors, ceilings or roofs provided the required
minimum distance from combustible material is maintained
C. may pass through floors, ceilings or roofs provided they are insulated
D. shall not pass through floors, ceilings or roofs ......ANSWER......D
BW vent shall be used only with an approved:
A. decorative appliance
B. down flow furnace
C. revertible flue boiler
D. recessed wall furnace ......ANSWER......D
What must be done during the installation of a gas log fireplace?
A. Make sure there is a metal mesh screen in front of the fireplace
B. Secure the chimney damper in the open position
C. Install a pressure regulator
D. Install a metal chimney liner ......ANSWER......B
When can a certified hose be used to connect a construction heater to
temporary piping?
A. Only if a lever handle shut off valve is installed upstream of the
hose
B. Only if the hose is 15 feet long
C. Never ......ANSWER......A
pg. 2
,3|Page
Which of the following is acceptable when a fireplace insert is installed?
A. A metal chimney linear
B. The existing fireplace flue
C. BW vent
D. A tile lined fireplace flue? ......ANSWER......A
An unvented infra-red heater can be installed in ________ application
A. A warehouse
B. A commercial building
C. An industrial building
D. All of the above ......ANSWER......D
Dirt pockets are required on:
A. Decorative appliances
B. Gas logs
C. Room heaters
D. None of the available choices ......ANSWER......D
What diameter and length of a dirt pocket is required when a drop line
is 3-inch diameter?
A. 3 inch diameter by 3 inches long
pg. 3
, 4|Page
B. 1 inch diameter by 3 inches long
C. 3/4 inch diameter by 3 inches long
D. 2 inch diameter by 3 inches long ......ANSWER......D
What type of room heater maybe installed in a bathroom?
A. Natural draft
B. Direct fired
C. Forced draft
D. Direct vent ......ANSWER......D
What safety control protects a steam boiler if the condensate pump
fails to return water to the boiler?
A. High pressure limit control
B. Low pressure limit control
C. Flame safeguard control
D. Low water cut off ......ANSWER......D
The relief valve for a residential low-pressure hot water boiler system
should be?
A. 14.7 psia
B. 15 psia
C. 30 psig
D. 30 psia ......ANSWER......C
pg. 4
