User ManualTable of ContentsUnit Dimensions2G50UH(X) Parts Arrangement3G50UH(X) Gas Furnace4Shipping and Packing List4Safety Information4General5Combustion, Dilution & Ventilation Air6Setting Equipment8Filters12Duct System12Venting12Gas Piping20Electrical21Unit Start-Up25Gas Pressure Adjustment26High Altitude Information27Other Unit Adjustments27Service28Repair Parts List30Ignition Control Board Diagnostic Codes30Troubleshooting31Start-Up & Performance Check List35LIMIT COMBUSTION AIR _ 24A-045 fELLOW RED3Size: 3.22 MBPages: 35Language: EnglishOpen manual