ITAZ RQ: Gas Furnaces Flashcards
List five of the components of a gas furnace.
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One-half-inch diameter black steel piping should be supported ______ feet when it runs horizontally and _______ when it runs vertically.
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List six gas piping problems you should watch for.
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Describe briefly how the pilot light and thermocouple work to ensure safety.
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A heating thermostat located in a kitchen will tend to
a. keep the rest of the house cooler than you want it.
b. keep the rest of the house warmer than you want it.
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Should the smaller appliance vent connect into the chimney above or below the vent from the larger appliance?
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If there is a chimney clean-out below the vent connection to the chimney, you should look up it to see ____________.
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List five problems that could be found with mechanical filters in furnaces.
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Starting at the supply plenum, list the components of the duct system the air travels through to deliver heat to the room, and to re-enter the furnace at the return site.
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The vapor barrier on an insulated duct iin a heating-only climate should be
a. on the side of the insulation lost to the duct.
b. on the side of the insulation furthest away from the duct.
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List six components that would be found inside the cabinet of a conventional gas-fired forced air furnace.
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Do the Standards require that we report on the life expectancy of furnaces?
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What is the purpose of a differential pressure switch in a condensing gas furnace?
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What is the average temperature of the exhaust gas from a high-efficiency furnace?
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What is the purpose of the copper wire running across the front of the heat shield in a condensing gas furnace?
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