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G2 Gas Technician Module 22 Revised 100% Pass
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G2 Gas Technician Module 22 Revised 100% Pass What pressure does atmospheric pressure exert on the earth at sea level? 14.74 psia What two things mean you must bring in combustion air. 1. Total BTU of appliance if greater than 400000 you must bring in combustion air. 2. If house is tight construct...
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