190,000 BTU ATO-310 Non-Condensing Outdoor Tankless Water Heater (NG/LP)

This unit is NOT approved for installation in Manufacture Homes and is not suitable for space heating applications only.

The 310U Series is great for two bath homes in cold climates. The 310U features a max flow rate of 8.0 gallons per minute providing enough hot water to run three showers at the same time. The design allows for a variety of installation options. Complies with Ultra-Low NOx regulations and meets energy efficiency requirements of ASHRAE 90.1b-1992. The ATO-310U tankless water heater uses up to 190,000 BTU/h of natural gas/liquid propane to deliver an endless supply of hot water for a 2.5 bath home in northern climates and up to a 3.5 bath home in southern climates (one shower head per bath). The ATO-310U has a Uniform Energy Factor of 0.81. With an industry leading 15-year limited warranty, the ATO-310U tankless water heater provides years of hot water through innovation and quality. 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.

Features:

Continuous flow rate up to 8.0 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 integrated temperature controls 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