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 - (answers)18 inches
A good description of how a bi-metal fan switch operates the blower motor on a gas furnace is -
(answers)Temperature on- temperature off
Redundant gas valves used on gas furnaces have - (answers)Dual gas shut off seats
Burning one cubic foot of liquefied petroleum gas completely will produce approximately
______ BTUs - (answers)2000 - 2500
LP gas has a specific gravity of - (answers)1.5 - 2.0
What is the purpose of a spoiler screw located on a burner, or adjustable-shutters? -
(answers)Mix primary air and gas
Furnace limit switches are wired in series with the - (answers)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 - (answers)3 feet
A technician determines that a natural gas furnace has a defective heat exchanger. The technician
should - (answers)Inform the homeowner and turn the gas off
, A natural gas furnace usually requires _____ gas pressure at the manifold and burners -
(answers)3.5 in. W.C.
The vent system for a condensing furnace is classified as ____ by the National Field Gas Code. -
(answers)Category IV
Type B vent pipe must be kept at least _____ from combustible materials - (answers)One inch
Typical condensing furnaces have an AFUE rating of at least - (answers)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 - (answers)Point it
down
The reason heating thermostat have anticipated is to - (answers)Reduce lag
The typical flue gas temperature of a Category III furnace is - (answers)280°F - 300°F
Natural gas primary consists of - (answers)Methane
Burning one cubic foot of natural gas will produce approximately _____ BTU's -
(answers)900~1,100
A furnace nameplate specifies a temperature rise of 40 to 70 degrees. Temperature measurements
indicate a rise of 80 degrees. The most appropriate action is to - (answers)Increase fan speed
A BTU is the amount of heat required to raise the temperature of one pound of water -
(answers)One degree Fahrenheit
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 - (answers)18 inches
A good description of how a bi-metal fan switch operates the blower motor on a gas furnace is -
(answers)Temperature on- temperature off
Redundant gas valves used on gas furnaces have - (answers)Dual gas shut off seats
Burning one cubic foot of liquefied petroleum gas completely will produce approximately
______ BTUs - (answers)2000 - 2500
LP gas has a specific gravity of - (answers)1.5 - 2.0
What is the purpose of a spoiler screw located on a burner, or adjustable-shutters? -
(answers)Mix primary air and gas
Furnace limit switches are wired in series with the - (answers)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 - (answers)3 feet
A technician determines that a natural gas furnace has a defective heat exchanger. The technician
should - (answers)Inform the homeowner and turn the gas off
, A natural gas furnace usually requires _____ gas pressure at the manifold and burners -
(answers)3.5 in. W.C.
The vent system for a condensing furnace is classified as ____ by the National Field Gas Code. -
(answers)Category IV
Type B vent pipe must be kept at least _____ from combustible materials - (answers)One inch
Typical condensing furnaces have an AFUE rating of at least - (answers)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 - (answers)Point it
down
The reason heating thermostat have anticipated is to - (answers)Reduce lag
The typical flue gas temperature of a Category III furnace is - (answers)280°F - 300°F
Natural gas primary consists of - (answers)Methane
Burning one cubic foot of natural gas will produce approximately _____ BTU's -
(answers)900~1,100
A furnace nameplate specifies a temperature rise of 40 to 70 degrees. Temperature measurements
indicate a rise of 80 degrees. The most appropriate action is to - (answers)Increase fan speed
A BTU is the amount of heat required to raise the temperature of one pound of water -
(answers)One degree Fahrenheit
