A.O. Smith ATO-510U Tankless Water Heater 199,000 BTU

Product Description

The A.O. SMITH ATO-510U tankless water heater uses up to 199,000 BTU/h of natural gas/liquid propane to deliver an endless supply of hot water. It features a commercial grade copper heat exchanger with a thicker heat exchanger drum suitable for commercial applications. Complies with Ultra-Low NOx regulations and meets the energy efficiency requirements of ASHRAE 90.1-b 1992.

• Natural Gas
• 10 MAX GPM
• Outdoor Only

Product Highlights

The ATO-510U is well suited for residential/commercial applications such as small restaurants and beauty salons. The design allows for a variety of installation options.

Product Information

Standard Information

• Brand: A.O. SMITH
• Manufacturer Part Number: ATO-510U
• Country of Origin: US

Technical Specifications

• Emissions: Ultra-Low NOx
• Maximum BTUs: 199,000
• Minimum BTUs: 15,000
• UEF: 0.81
• Water Connection Location: Bottom
• Water Connection Size: 3/4"
• Heat Exchanger: Commercial-Grade Copper
• Voltage: 120
• Remote Control: Yes
• Technology: Non-Condensing
• Height: 20 1/2"
• Width: 13 3/4"
• Depth: 9 1/2"
• Power Source: GAS
• ASME Certified: No
• Digital Display: Yes
• Fuel Source: NATURAL
• Installation Type: Outdoor
• GPM (@67 F Temp Rise): 5 GPM
• Application: Outdoor Indoor/Outdoor
• Product Tier: ProLine XE
• Side Loop: No
• Type: Water Heater
• Vent Type: Direct Vent
• MPN: ATO-510U
• Manufacturer: AO Smith
• Series: ATO
• BTU Input: 199,000
• Material: Stainless Steel
• Water Heater Type: Residential/Commercial
• Venting: Power Direct Vent
• Venting Type: Power Direct Vent
• Energy Star: No
• Heating: 190000 Btu/hr
• Gas Connection: 3/4 in NPT
• Ignition: Electronic Spark
• Condensing/Non Condensing: Non-Condensing
• Flow Rate: 10 gpm
• Efficiency: 0.81
• Water Connection: 3/4 in NPT
• Pressure: 15 to 150 psi
• Low NOx: Yes Ultra Low NOx
• Dimensions: 13-3/4 in W x 9-1/2 in D x 20-1/2 in H
• Usage: Commercial/Residential