Basics of Gas Heating
What is natural gas?
This fuel is most commonly used in residential gas furnaces.
What is a heat exchanger?
This part transfers heat from combustion gases to the air.
What is combustion?
This process requires fuel, oxygen, and heat.
What is a thermostat?
This device controls temperature by turning the furnace on/off
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Zach
What is a burner?
This component mixes gas with air before combustion.
What is a fan (blower motor)?
This blower component moves air through the duct system.
This term refers to the correct air-to-fuel ratio.
What is the ignition sequence?
This sequence begins when the thermostat calls for heat.
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∞
What is a hot surface igniter?
This type of ignition system uses a glowing element instead of a pilot light.
What is a limit switch?
This safety switch shuts down the furnace if it overheats.
What is a condensing furnace?
This type of furnace has efficiency rating above 90%
What is the inducer motor?
This motor start before ignition to clear gases from the chamber.
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What is a flame sensor?
This device proves that the flame is present for safe operation.
What is a gas valve?
This valve controls the flow of gas the burner.
What is carnbox monoxide?
Byproduct of incomplete combustion is dangerous and odorless.
What is a lockout control?
This safety feature shuts off gas if ignition fails.
Yea
What is propane?
This is gas is heavier than air and often stored in tanks.
What is a draft inducer or pressure switch?
This device ensures proper venting detecting.
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chris
What is a fan delay control?
This timing device delays blower startup until the heat exchanger warms up.
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