SC Air Conditioning Practice Questions - South Carolina Air Conditioning Contractor Examination Exam

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A typical two-stage LP-gas regulator serving a building reduces tank pressure so that the appliance manifold sees a listed LP pressure, commonly about:

7 inches water column measured at the tank vapor valve 3.5 inches water column, the same as most natural-gas furnaces without conversion 10 to 11 inches water column at the appliance, after the second-stage regulator 2 psig at the burner orifices

Correct Answer:

10 to 11 inches water column at the appliance, after the second-stage regulator

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