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

Model ATO-510U
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 standard 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
5.00
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
15 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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