A.O. Smith ATI-310U 190,000 BTU Non-Condensing Ultra-Low NOx Indoor Tankless Water Heater (NG/LP)

Product Description

The A.O. SMITH ATI-310U tankless water heater uses up to 190,000 BTU/h of natural gas/liquid propane to deliver an endless supply of hot water. Features a max flow rate of 8.0 gallons per minute. Complies with Ultra-Low NOx regulations and meets energy efficiency requirements of ASHRAE 90.1b-1992. A great choice for two bath homes in cold climates.

• 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

Product Highlights

The ATI-310U tankless water heater provides years of hot water through innovation and quality. It is easily convertible from natural gas to propane with supplied kit.

Product Information

Standard Information

• Brand: A.O. SMITH
• Manufacturer Part Number: ATI-310U
• Country of Origin: US

Technical Specifications

• Product Type: Tankless Heater
• Fuel Type: Propane, Natural Gas
• Inlet Gas Pressure: 4.0-10.5"W.C
• Installation Type: Indoor Only
• Gas Connection: 3/4 in NPT
• Water Connection: 3/4 in NPT
• Gas Input: 15000 to 190000 BTU/h
• Voltage: 120v
• Energy Factor: 0.82
• Max Flow (GPM): 8
• Depth (Inches): 10"
• Width (Inches): 13-3/4"
• Height (Inches): 20.5"
• BTU (Max): 190000
• BTU (Min): 15000
• Type: Non-Condensing
• Application: Residential
• Vent Type: Direct/Power
• Includes: Gas Conversion Kit
• Flow Rate at 40F Temp Rise (GPM): 7.9
• Flow Rate at 50F Temp Rise (GPM): 6.2
• Flow Rate at 60F Temp Rise (GPM): 5.3
• Flow Rate at 70F Temp Rise (GPM): 4.5
• UEF: 0.81
• Maximum BTUs: 190,000
• Power Source: GAS
• Water Connection Location: BOTTOM
• Emissions: Ultra-Low NOx
• ASME Certified: No
• Digital Display: Yes
• Fuel Source: NATURAL
• GPM (@67 F Temp Rise): 4.7 GPM
• Minimum BTUs: 15,000
• Side Loop: No
• Brand: AO Smith
• Commercial/Residential/Dual: Commercial/Residential
• Condensing/Non Condensing: Non-Condensing
• Flow Rate: 8 gpm
• Heating Capacity: 190000 Btu/hr
• Ignition Type: Electronic Spark
• Indoor/Outdoor: Indoor
• Pressure Rating: 15 to 150 psi
• Ultra Low NOx: Yes
• Vent Size: 3 or 4 in
• Volts: 120 V
• Model: ATI-310U
• Connection Size: 3/4"
• Display Type: LCD
• Product Variation: Whole House Water Heater
• Depth: 9-1/2"