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: GCBL-30, 35500 Btu/hr Heating, Natural Gas, 1/2 in Gas Connection, 30 gal Tank, Piezo Pushbutton Ignition, Atmospheric Vent, 3 in, 4 in Vent, 37 gph at 90 deg F Recovery, Energy Factor: 0.58, 3/4 in Water Connection, 150 psi, Tall or Short: Short, Ultra Low Nox: No, 18 in Dia x 50 in H

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  Catalog-1 https://www.auersteel.com//ASSETS/DOCUMENTS/ITEMS/EN/AO_Smith_100051462_Catalog.pdf
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  Data/Spec Sheet-1 https://www.auersteel.com//ASSETS/DOCUMENTS/ITEMS/EN/A_O_Smith_GCB3000L010000_Data_Sheet.pdf
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  Instruction/Installation Sheet https://www.auersteel.com//ASSETS/DOCUMENTS/ITEMS/EN/A_O_Smith_GCB3000L010000_Instruction_Installation.pdf
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  Warranty https://www.auersteel.com//ASSETS/DOCUMENTS/ITEMS/EN/A_O_Smith_GCB3000L010000_Warranty.pdf

• Intelligent control logic - The internal microprocessor provides enhanced operating parameters and tighter differentials for precise sensing and faster heating response to optimize performance
• Uses a thermopile to generate the power needed to operates the electronic gas control without requiring an external power source
• The electronic gas control incorporates an LED status indicator that monitors system operation and service diagnostics
• Green Choice® gas burner - Patented "Eco-Friendly" design reduces NOx emissions by up to 33% and complies with low- NOx emission requirements of less than 40 ng/J
• Dynaclean™ diffuser dip tube - Reduces lime and sediment build up and maximizes hot water output, made from long-lasting PEX cross-linked polymer
• Coregard™ anode rod - Our anode rods have a stainless steel core that extends the life of the anode rod allowing superior tank protection for longer than standard anode rods
• Pushbutton piezo ignitor - Makes lighting the pilot fast and easy with one-hand pushbutton spark ignition
• Heat trap nipples Factory installed for faster installation
• Blue Diamond® glass coating - Provides superior corrosion resistance compared to industry standard glass lining
• Enhanced-flow brass drain valve - Our residential water heaters have a solid brass, tamper resistant, enhanced-flow, ball type, drain valve
• Uses a standard female hose fitting that allows for fast and easy draining during maintenance
• Designed for easy operation, this valve includes an integral screwdriver slot that features a 1/4 turn (open/close) radius, which not only permits full straight-through water flow but also a quick and positive shut off
• High energy factors - Eco-Friendly Non-CFC foam insulation, external heat traps and specially designed combustion chamber combine to produce a high Energy Factor for maximum savings on operating costs
• Approved for installation from sea level to 10100 ft elevation