gas tech II Exam 2026 Questions and
Answers
1) What is the minimum diameter of a pressure gauge needed to perform leak test
on gas piping? - Correct Answer -3"
2) Amp meter can read what? - Correct Answer -Conductor magnetic field.
3) What would be the primary voltage of a furnace? - Correct Answer -120/1/60.
4) What is the function of an intermittent pilot? - Correct Answer -Stay on during
the main burner operation.
5) What is the millivolts power output on a thermocouple closed circuit test? -
Correct Answer -10 to 15 millivolts.
6) A pilot with a lazy yellow flame would indicate? - Correct Answer -Orifice size
too large.
7) For flame rectification one of the most important things should be? - Correct
Answer -Proper grounding plane.
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,8) What makes a flame capillary sensor tube prove pilot to main gas valve? -
Correct Answer -Pilot flame.
9) Since 1996 the most common type of home construction? - Correct Answer -
Platform.
10) Can a new installation of a fin type pool heater less than 250,000 btu be
installed in a house? - Correct Answer -Yes, if pool heater is direct vented.
11) When converting oil furnace to gas what type of atmospheric burner can be
use? - Correct Answer -Inshot.
12) If the flue gases are remove from the front of the appliance we could assume
that it's a? - Correct Answer -2 to 4 flue pasts boiler.
13) Can a gas log set be installed in sleeping quarters? - Correct Answer -Yes, if
approved by the manufacturer. See clause 7.24.4(c).
14) What is the minimum distance that a vent from an appliance with an input of
110,000 btuh can be from a non-mechanical air supply? - Correct Answer -3ft
15) If the boiler flue gases are remove from the front of the appliance we could
assume that it's a? - Correct Answer -2 to 4 flue pass boiler.
16) Can a gas log fire place be installed in a sleeping quarter? - Correct Answer -
No, even if new venting is installed.
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, 17) What is the minimum distance that a vent from an appliance with an input of
101,000 btuh be from a non-mechanical air supply? - Correct Answer -3ft
18) On a presssuretol, the main burner starts on? - Correct Answer -Pressure
differential.
19) On a hydronic heater system what control respond to a load change? - Correct
Answer -Aquastat.
20) Installation of a propane tank under 1000 USWG what would be the minimum
distance from a regulator to a building opening? - Correct Answer -3'
21) If an appliance is less than 85% efficient and non positive it would be
considered a? - Correct Answer -Category 2.
22) For a steam boiler what would be the most important safety control? - Correct
Answer -Low water cut off.
23) For a low pressure steam boiler what would be the maximum steam pressure
setting? - Correct Answer -15psi
24) What would be the minimum distance from a gas meter a dryer vent should
terminate? - Correct Answer -3'
25) A appliance draft hood ensures? - Correct Answer -Zero over fire draft.
©COPYRIGHT 2025 ALL RIGHTS RESERVED 3
Answers
1) What is the minimum diameter of a pressure gauge needed to perform leak test
on gas piping? - Correct Answer -3"
2) Amp meter can read what? - Correct Answer -Conductor magnetic field.
3) What would be the primary voltage of a furnace? - Correct Answer -120/1/60.
4) What is the function of an intermittent pilot? - Correct Answer -Stay on during
the main burner operation.
5) What is the millivolts power output on a thermocouple closed circuit test? -
Correct Answer -10 to 15 millivolts.
6) A pilot with a lazy yellow flame would indicate? - Correct Answer -Orifice size
too large.
7) For flame rectification one of the most important things should be? - Correct
Answer -Proper grounding plane.
©COPYRIGHT 2025 ALL RIGHTS RESERVED 1
,8) What makes a flame capillary sensor tube prove pilot to main gas valve? -
Correct Answer -Pilot flame.
9) Since 1996 the most common type of home construction? - Correct Answer -
Platform.
10) Can a new installation of a fin type pool heater less than 250,000 btu be
installed in a house? - Correct Answer -Yes, if pool heater is direct vented.
11) When converting oil furnace to gas what type of atmospheric burner can be
use? - Correct Answer -Inshot.
12) If the flue gases are remove from the front of the appliance we could assume
that it's a? - Correct Answer -2 to 4 flue pasts boiler.
13) Can a gas log set be installed in sleeping quarters? - Correct Answer -Yes, if
approved by the manufacturer. See clause 7.24.4(c).
14) What is the minimum distance that a vent from an appliance with an input of
110,000 btuh can be from a non-mechanical air supply? - Correct Answer -3ft
15) If the boiler flue gases are remove from the front of the appliance we could
assume that it's a? - Correct Answer -2 to 4 flue pass boiler.
16) Can a gas log fire place be installed in a sleeping quarter? - Correct Answer -
No, even if new venting is installed.
©COPYRIGHT 2025 ALL RIGHTS RESERVED 2
, 17) What is the minimum distance that a vent from an appliance with an input of
101,000 btuh be from a non-mechanical air supply? - Correct Answer -3ft
18) On a presssuretol, the main burner starts on? - Correct Answer -Pressure
differential.
19) On a hydronic heater system what control respond to a load change? - Correct
Answer -Aquastat.
20) Installation of a propane tank under 1000 USWG what would be the minimum
distance from a regulator to a building opening? - Correct Answer -3'
21) If an appliance is less than 85% efficient and non positive it would be
considered a? - Correct Answer -Category 2.
22) For a steam boiler what would be the most important safety control? - Correct
Answer -Low water cut off.
23) For a low pressure steam boiler what would be the maximum steam pressure
setting? - Correct Answer -15psi
24) What would be the minimum distance from a gas meter a dryer vent should
terminate? - Correct Answer -3'
25) A appliance draft hood ensures? - Correct Answer -Zero over fire draft.
©COPYRIGHT 2025 ALL RIGHTS RESERVED 3
