120,000 BTU ATO-140H Condensing Ultra-Low NOx Outdoor Tankless Water Heater (NG)

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

The 140H Series offers high efficiency Ultra-Low NOx condensing technology allowing for the use of 3” PVC venting and has 0” clearance to combustibles. Indoor models are certified up to 10,100 ft. altitude. Provides a variety of installation options: indoor, outdoor and direct vent. Complies with Ultra-Low NOx regulations and meets the energy efficiency requirements of ASHRAE 90.1b-1992. The ATO-140H-N tankless water heater uses up to 120,000 BTUs of natural gas to deliver a max flow rate of 6.6 GPM. It utilizes condensing technology to achieve a Uniform Energy Factor of 0.91. 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.

Features:

Continuous flow rate up to 6.6 GPM

Wall-mount design saves valuable space and allows for additional storage and flexibility

Primary commercial-grade copper heat exchanger is 25x better than stainless steel at heat transfer, stabilizing outgoing water temperatures quicker

Secondary heat exchanger is made of 316L Stainless Steel to protect against corrosion

Highly efficient condensing Ultra-Low Nox tankless water heater delivers up to .91 Uniform Energy Factor (UEF)

Vents with 3” PVC up to 70 feet or 4" PVC up to 100 feet

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