A. O. Smith ProLine(R) XE Concentric Vent Indoor 199,000 BTU Non-Condensing Natural Gas Tankless Water Heater

 •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
 •Highly efficiency tankless water heater delivers up to a 0.81 Uniform Energy Factor (UEF)
 •Direct vent APNC35 concentric vent system, vertical or horizontal termination
 •Easy-Link up to 4 units (no additional parts or accessories needed) and Multi-link up to 20 units
 •Includes integrated temperature controls and advanced diagnostics to simplify troubleshooting
 •Safety features include exhaust & water temperature safety control, overheat cut-off fuse and air-fuel ratio (AFR) sensor
 •15-year limited warranty on heat exchanger in residential applications

Fully modulating, gas fired, tankless water heater with sealed combustion and power vented flue. Supplies hot water to domestic hot water systems (directly or indirectly) and can be used with water storage tanks, re-circulation systems, and/or combined domestic and heating applications. The ATI-510C-N tankless water heater uses up to 199,000 BTUs of Natural Gas or Liquid Propane to deliver a max flow rate of 10.0 GPM. It utilizes condensing technology to achieve a Uniform Energy Factor of 0.81. This model meets Ultra-Low NOx requirements, and has a 15-year limited warranty on the heat exchanger in residential applications. A. O. Smith s ProLine(R) water heaters are residential products built to commercial-grade standards and are only available for purchase through professional wholesalers and contractors.