ProLine® XE Ultra-Low NOx Outdoor 199,000 BTU Non-Condensing Natural Gas/Liquid Propane Tankless Water Heater

Model ATO-510U 200
3.7 out of 5 Customer Rating
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Installation Type
Maximum BTU's

  • Continuous flow rate up to 10.0 GPM
  • Wall-mount design saves valuable space and allows for additional storage and flexibility
  • Commercial-grade copper heat exchanger is 25x better than stainless steel at heat transfer, stabilizing outgoing water temperatures quicker
  • Product Details
    • Continuous flow rate up to 10.0 GPM
    • Wall-mount design saves valuable space and allows for additional storage and flexibility
    • Commercial-grade copper heat exchanger is 25x better than stainless steel at heat transfer, stabilizing outgoing water temperatures quicker
    • Easily convertible from natural gas to propane with supplied kit
    • Highly efficient condensing Ultra-Low Nox tankless water heater delivers up to .81 Uniform Energy Factor (UEF)
    • Vents up to 60 feet using 4” Category III Stainless Steel
    • Includes a wall mount temperature remote controller and advanced diagnostics to simplify troubleshooting
    • Safety features include built-in freeze protection, overheat cut-off fuse and air-fuel ratio (AFR) sensor
    • 15-year limited warranty on heat exchanger in residential applications

    • The 510U is well suited for residential/commercial applications such as small restaurants and beauty salons. It features a commercial grade copper heat exchanger with a thicker heat exchanger drum which is suitable for commercial applications or heavier-residential usages such as space heating or domestic recirculation systems. The design allows for a variety of installation options. Complies with Ultra-Low NOx regulations and meets the energy efficiency requirements of ASHRAE 90.1-b 1992. Easy-Link System capable up to 4 units. Multi-Link system capable up to 20 units. The ATO-510U-N tankless water heater uses up to 199,000 BTUs of natural gas to deliver a max flow rate of 10 GPM. It utilizes non-condensing technology to achieve an Energy Factor of 0.82. This model meets Ultra-Low NOx emission requirements, and comes with a 15-year limited warranty. A. O. Smith’s ProLine® water heaters are residential products built to commercial-grade standards and are only available for purchase through professional wholesalers and contractors.

    Specifications
    Tech Specs
    UEF
    0.81
    Maximum BTUs
    199,000
    Power Source
    GAS
    Limited Parts Warranty
    5 Years
    Water Connection Location
    BOTTOM
    Emissions
    Ultra-Low NOx
    ASME Certified
    No
    Destination Country
    US
    Digital Display
    true
    Fuel Source
    NATURAL
    Installation Type
    OUTDOOR
    Limited Heat Exchanger Warranty 
    15 Years
    Max Flow Rate
    5 GPM
    Minimum BTUs
    15,000.00
    Application
    RESIDENTIAL
    Product Tier
    ProLine® XE
    Shipping Height 
    28"
    Shipping Length 
    16.625"
    Shipping Width 
    12.375"
    Side Loop
    No
    Dimension & Venting
    Type
    Water Heater
    Height
    20.5"
    Width
    13.75"
    Shipping Weight
    40lbs
    Vent Type
    Direct Vent
    Find a Replacement
    Current Product
    Option 2
    Option 3
    ProLine® XE Ultra-Low NOx Outdoor 199,000 BTU Non-Condensing Natural Gas/Liquid Propane Tankless Water Heater
    ProLine® XE Ultra-Low NOx Outdoor 180,000 BTU Condensing Natural Gas Tankless Water Heater
    ProLine® XE Ultra-Low NOx Outdoor 199,000 BTU Condensing Natural Gas Tankless Water Heater
    ATO-510U
    ATO-340H
    ATO-540H
    Rebates up to $300 +
    Rebates up to $300 +
    Rebates up to $300 +
    Width
    13.75"
    17.75"
    17.75"
    Depth
    9.5"
    11.25"
    11.25"
    Height
    20.5"
    23.625"
    23.63"
    Shipping Weight
    40lbs
    69lbs
    69lbs
    Power Source
    GAS
    GAS
    GAS
    Limited Tank Warranty
    0 Years
    0 Years
    0 Years
    Limited Parts Warranty
    5 Years
    5 Years
    5 Years
    Water Connection Location
    BOTTOM
    BOTTOM
    BOTTOM
    Water Connection Size
    0.75"
    Thermal Efficiency
    0%
    0%
    0%
    All Reviews for ProLine® XE Tankless Non-Condensing Ultra-Low Nox (200 series)
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