Conversion 1-50 gallon water heater conversion-Install new Rheem 50-gallon PROG50-38N-RH60 S#Q032027477 natural gas water heater in the attic. Includes heater, new flexes, and disposal of old equipment. 1-Furnace conversion -remove propane orifices and valve and replace with natural gas valve 628S and orifices 9342 . Dial in gas pressures on gas valve and check unit for proper operations. Installed customer supplied orifices for stove conversion. Run one inch gas line from attic down outside wall-left side of near pool heater.