HVAC Excellence Gas Heat Practice Questions - HVAC Excellence Master Specialist - Gas Heat (Written Examination) Exam

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A standard mid-efficiency (80% AFUE) gas furnace uses an induced-draft blower. What is the primary purpose of that inducer motor?

To circulate conditioned air through the supply ducts To pull combustion products through the heat exchanger and establish a controlled draft To cool the electronic control board To pressurize the gas manifold to firing pressure

Correct Answer:

To pull combustion products through the heat exchanger and establish a controlled draft

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