GU62-40S40 - ProLine® 40-Gallon Short Ultra-Low NOx Natural Gas Water Heater - 6 Year Warranty

Model GU6240S40 450
Capacity (Gallons)
Height Classification
UEF
Advanced Options
Limited Tank Warranty
Diameter

  • LED status indicator for monitoring system operation and simplifying service diagnostics
  • Intelligent control logic for enhanced operating parameters and faster heating response
  • Eco-friendly insulation, heat traps, and combustion chamber for maximum energy efficiency and cost savings
  • GU62-40S40 - ProLine® 40-Gallon Short Ultra-Low NOx Natural Gas Water Heater - 6 Year Warranty
    Model GU6240S40 450
    Product Details
    • LED status indicator for monitoring system operation and simplifying service diagnostics
    • Intelligent control logic for enhanced operating parameters and faster heating response
    • Eco-friendly insulation, heat traps, and combustion chamber for maximum energy efficiency and cost savings
    • Green Choice® gas burner complies with strict NOx emission standards for improved air quality
    • Self-cleaning dip tube reduces sediment buildup and maximizes hot water output
    • Thermopile system generates power for electronic gas control without external power source
    • CoreGard™ anode rod extends tank protection and durability
    • Blue Diamond® glass coating provides superior corrosion resistance for long-lasting performance
    • 6-year limited tank and parts warranty

    • Proline® Ultra-Low NOx water heaters deliver exceptional performance and eco-friendly features, making them a reliable choice for residential use. These water heaters utilize intelligent control logic with an internal microprocessor to enhance operations, provide precise sensing, and a faster heating response. The thermopile system generates the necessary power for the electronic gas control, eliminating the need for an external power source. The LED status indicator on the electronic gas control provides service diagnostics, simplifying maintenance and ensuring optimal functionality.

      Designed with energy efficiency and environmental responsibility in mind, Proline® Ultra-Low NOx water heaters feature a Green Choice® gas burner that complies with Ultra-Low NOx emission standards, including SCAQMD Rule 1121. The eco-friendly non-CFC foam insulation, heat traps, and specially designed combustion chamber work together to achieve high energy factors, reducing operating costs. These water heaters also incorporate advanced features such as a self-cleaning dip tube to minimize sediment buildup, a CoreGard™ anode rod for superior tank protection, and a Blue Diamond® glass coating for enhanced corrosion resistance, ensuring long-lasting durability and performance.

    Specifications
    Tech Specs
    Nominal Gallon Capacity
    40 Gallons
    Rated Storage Volume
    38 Gallons
    UEF
    0.57
    Maximum BTUs
    40,000
    Power Source
    GAS
    Limited Tank Warranty
    6 Years
    Limited Parts Warranty
    6 Years
    T&P Relief Valve
    Yes
    Water Connection Location
    TOP
    Water Connection Size
    0.75"
    Emissions
    Ultra-Low NOx
    First Hour Rating
    72 Gallons
    ASME Certified
    No
    Blanket Included
    No
    Destination Country
    US
    Flue Diameter
    4.00
    Fuel Source
    NATURAL
    Height to T&P
    41.25
    Ignition Type
    Pilot with Piezo Igniter
    Installation Type
    INDOOR
    Application
    RESIDENTIAL
    Shipping Height 
    51.31
    Shipping Length 
    24.13
    Shipping Width 
    21.13
    Side Loop
    No
    Dimension & Venting
    Type
    Water Heater
    Height
    47.75"
    Diameter
    22"
    Shipping Weight
    138 lbs
    Vent Type
    Atmospheric Vent
    Height to Gas Valve
    11"
    Maintenance & Troubleshooting
    Maintenance

    Residential Series Atmospheric Vent Lighting the Pilot

    Troubleshooting

    Residential Series Atmospheric Vent Draft Test

    Residential Series Atmospheric Vent No Hot Water

    Residential Series Atmospheric Vent Status Code 1 Flash

    Residential Series Atmospheric Vent Status Code 2 Flash

    Residential Series Atmospheric Vent Status Code 4 Flash

    Residential Series Atmospheric Vent Status Code 5 Flash

    Residential Series Atmospheric Vent Status Code 7 Flash

    Residential Series Atmospheric Vent Status Code 8 Flash

    Residential Series Atmospheric Vent Status Code Light Continuous

    Marketing Videos
    Residential Series Atmospheric Vent Application and Installation
    Residential Series Atmospheric Vent Features and Benefits
    Residential Series Atmospheric Vent How It Works