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HVAC GAS HEAT CERTIFICATION EXAM LATEST
WITH ACTUAL QUESTIONS AND CORRECT
VERIFIED ANSWERS ALREADY GRADED A+
100% GUARANTEED PASS!
A gas furnace is to be installed in a garage. The
national standards require that the burners and ignition
sources must be located ______ above the floor -
.....ANSWER ...✔✔ 18 inches
A good description of how a bi-metal fan switch
operates the blower motor on a gas furnace is -
.....ANSWER ...✔✔ Temperature on- temperature off
Redundant gas valves used on gas furnaces have -
.....ANSWER ...✔✔ Dual gas shut off seats
Burning one cubic foot of liquefied petroleum gas
completely will produce approximately ______ BTUs -
.....ANSWER ...✔✔ 2000 - 2500
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LP gas has a specific gravity of - .....ANSWER ...✔✔
1.5 - 2.0
What is the purpose of a spoiler screw located on a
burner, or adjustable-shutters? - .....ANSWER ...✔✔
Mix primary air and gas
Furnace limit switches are wired in series with the -
.....ANSWER ...✔✔ Gas valve
A technician is using an extension ladder to work on roof
top unit. The top of the ladder should extend _____
beyond the support point - .....ANSWER ...✔✔ 3 feet
A technician determines that a natural gas furnace has a
defective heat exchanger. The technician should -
.....ANSWER ...✔✔ Inform the homeowner and turn
the gas off
A natural gas furnace usually requires _____ gas
pressure at the manifold and burners - .....ANSWER
...✔✔ 3.5 in. W.C.
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The vent system for a condensing furnace is classified as
____ by the National Field Gas Code. - .....ANSWER
...✔✔ Category IV
Type B vent pipe must be kept at least _____ from
combustible materials - .....ANSWER ...✔✔ One inch
Typical condensing furnaces have an AFUE rating of at
least - .....ANSWER ...✔✔ 90%
You have installed a Category IV two-pipe vent system
that terminates through the roof of the residence. The
elbow for the combustion air intake, above the roof,
should - .....ANSWER ...✔✔ Point it down
The reason heating thermostat have anticipated is to -
.....ANSWER ...✔✔ Reduce lag
The typical flue gas temperature of a Category III
furnace is - .....ANSWER ...✔✔ 280°F - 300°F
Natural gas primary consists of - .....ANSWER ...✔✔
Methane
HVAC GAS HEAT CERTIFICATION EXAM LATEST
WITH ACTUAL QUESTIONS AND CORRECT
VERIFIED ANSWERS ALREADY GRADED A+
100% GUARANTEED PASS!
A gas furnace is to be installed in a garage. The
national standards require that the burners and ignition
sources must be located ______ above the floor -
.....ANSWER ...✔✔ 18 inches
A good description of how a bi-metal fan switch
operates the blower motor on a gas furnace is -
.....ANSWER ...✔✔ Temperature on- temperature off
Redundant gas valves used on gas furnaces have -
.....ANSWER ...✔✔ Dual gas shut off seats
Burning one cubic foot of liquefied petroleum gas
completely will produce approximately ______ BTUs -
.....ANSWER ...✔✔ 2000 - 2500
,2|Page
LP gas has a specific gravity of - .....ANSWER ...✔✔
1.5 - 2.0
What is the purpose of a spoiler screw located on a
burner, or adjustable-shutters? - .....ANSWER ...✔✔
Mix primary air and gas
Furnace limit switches are wired in series with the -
.....ANSWER ...✔✔ Gas valve
A technician is using an extension ladder to work on roof
top unit. The top of the ladder should extend _____
beyond the support point - .....ANSWER ...✔✔ 3 feet
A technician determines that a natural gas furnace has a
defective heat exchanger. The technician should -
.....ANSWER ...✔✔ Inform the homeowner and turn
the gas off
A natural gas furnace usually requires _____ gas
pressure at the manifold and burners - .....ANSWER
...✔✔ 3.5 in. W.C.
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The vent system for a condensing furnace is classified as
____ by the National Field Gas Code. - .....ANSWER
...✔✔ Category IV
Type B vent pipe must be kept at least _____ from
combustible materials - .....ANSWER ...✔✔ One inch
Typical condensing furnaces have an AFUE rating of at
least - .....ANSWER ...✔✔ 90%
You have installed a Category IV two-pipe vent system
that terminates through the roof of the residence. The
elbow for the combustion air intake, above the roof,
should - .....ANSWER ...✔✔ Point it down
The reason heating thermostat have anticipated is to -
.....ANSWER ...✔✔ Reduce lag
The typical flue gas temperature of a Category III
furnace is - .....ANSWER ...✔✔ 280°F - 300°F
Natural gas primary consists of - .....ANSWER ...✔✔
Methane
