Directory: Catalog > Water Heaters > A.O. Smith > Parts Parts List: A.O. Smith FCG-50, Series 246/247. Links are included to the parts that are available to be purchased. Parts that are not listed in the chart are either discontinued by AO Smith or are not available for purchase. AOS50NT ProLine® GCG-50 Gas Water Heater, 40 Kbtu/hr, 50 gal, Natural Gas, Tall. AO Smith® 100191291 ProLine® Gas Water Heater, Series: GCG-50, 40000 Btu/hr Heating, Natural Gas, 1/2 in Gas Connection, 50 gal Tank, Piezo Pushbutton Ignition, Atmospheric Vent, 3 in, 4 in Vent, 41 gph at 90 deg F Recovery, Energy Factor: 0.62, 3/4 in Water AO Smith XCG50 Overview. The ProLine® 400/401 Series gas water heater is designed to deliver an economical performance that can lower your energy bills and also provide long-lasting value.It features a 50-gallon tank and a 40,000 BTU gas burner, the XCG-50 Standard Vent delivers a first hour rating of 88 gallons and a recovery rate of 41 Featuring a 50-gallon tank and a 40,000 BTU gas burner, the GCG-50 Standard Vent delivers a first hour rating of 88 gallons and a recovery rate of 41 gallons per hour. With an 0.60 Energy Factor, this water heater is not ENERGY STAR qualified. It carries a 6-year limited tank warranty, and meets Low NOx emission requirements. A.O. Smith is a trendsetter in the field of advanced water heating products and technologies. A good example developed entirely in-house, is our patented PermaGlas Ultra Coat enameling: a glass protective layer on the interior surface of the steel tank, ensuring maximum corrosion resistance and a long lifetime of the appliance. A. O. Smith FVIR design meets the American National Standards Institute standards (ANSIZ21.10.1-CSA 4.1) that deal with the accidental or unintended ignition of flammable vapors, such as those emitted by gasoline. Features a sealed combustion chamber with intake air filter and a flame arrestor built into the water heater base. DESCRIPTION. The ProLine® 400/401 Series gas water heater is designed to deliver an economical performance that can lower your energy bills and also provide long-lasting value. AO Smith® ProLine® Gas Water Heater, Series: GCG-50, 40000 Btu/hr Heating, Natural Gas, 1/2 in Gas Connection, 50 gal Tank, Piezo Pushbutton Ignition, Atmospheric A.O. Smith Gas-Fired Closed Water Heater Installation User and Service Manual 30, 50, 80, 100, 120. Pages: 68. See Prices; A.O. Smith Water Heater 100 Power Vent DV Series 120. A.O. Smith Residential Gas Water Heater Instruction Manual Need a manual for AO Smith ProMax water heater i have a a o smith tank less water heater X T 194 Buy AO Smith GCR-50 for the lowest price available online! Shop SupplyHouse.com for fast shipping and great service. [pool0] Compare. Add to List. Manuals. Manuals (4) Brochure. Product Overview. Install Instructions. Warranty Info. Specs. Specs. Intended Household: 3-4 Person Application: Plumbing Enter the unit's serial number into the AO Smith Parts Finder. AO Smith® ProLine® Gas Water Heater, Series: GCG-50, 37000 Btu/hr Heating, Liquid Propane, 1/2 in Gas Connection, 50 gal Tank, Piezo Pushbutton Ignition, Atmospheric Vent, 3 in, 4 in Vent, 41 gph at 90 deg F Recovery, Energy Factor: 0.62, 3/4 in Water Connection, 150 psi, Tall AO Smith XCG-50 Residential Natural Gas Water Heater, 50 Gallons, 40000 BTU, Atmospheric, 10 Yr Tank / 6 Pts Warranty. Old Models = SMIPCV50, PCV-50, SMIXVR50, XVR-50, SMIXGV50, XGV-50, SMIXCV50, XCV-50, SMIPGXH50, PGXH-50, SM