A.O. Smith ATI-240HX3-N Tankless Water Heater 160,000 BTU

Product Description

The A.O. Smith ATI-240HX3-N condensing gas tankless water heater features X3 Scale Prevention Technology, lasting three times longer than other tankless models. It delivers continuous hot water while protecting against scale build-up. This heater complies with Ultra-Low NOx regulations and utilizes commercial-grade copper alloy for the heat exchanger tubing.

• Maintains like-new performance for the life of the product vs. tankless models without X3 that show 10% efficiency reduction in the first 1.5 years
• 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

Product Highlights

The tankless water heaters are approved to work with an external recirculation pump and cross-over valve. It is certified up to 10,100 ft. altitude.

Product Information

Standard Information

• Brand: A.O. SMITH
• Manufacturer Part Number: ATI-240HX3-N
• Country of Origin: USA

Technical Specifications

• Product Type: Tankless Heater
• Type: Condensing
• Fuel Type: Natural Gas
• Inlet Gas Pressure: 4.0-10.5"W.C
• Installation Type: Indoor Only
• Gas Connection: 3/4"
• Water Connection: 3/4"
• Energy Factor: 0.94
• Gas Input: 15000 to 160000 BTU/h
• Voltage: 120V
• Max Flow (GPM): 6.6
• Depth (Inches): 11.25"
• Height (Inches): 23.625"
• Width (Inches): 17.75"
• BTU (Max): 160000
• BTU (Min): 15000
• Vent Type: Direct Vent
• Application: Residential
• Flow Rate at 40F Temp Rise (GPM): 6.7
• Flow Rate at 50F Temp Rise (GPM): 6.1
• Flow Rate at 60F Temp Rise (GPM): 5
• Flow Rate at 70F Temp Rise (GPM): 4.3
• UEF: 0.94
• Maximum BTUs: 160,000
• Power Source: GAS
• Emissions: Ultra-Low NOx
• ASME Certified: No
• Digital Display: Yes
• Flue Diameter: 4.00
• Fuel Source: NATURAL
• Indoor Installation: Yes
• GPM (@67 F Temp Rise): 4.7 GPM
• Minimum BTUs: 15,000
• Heating Technology: Condensing
• Altitude Certification: 10100 ft.
• Condensing: Yes
• Frequency: 60 Hertz
• Ignition Type: Electric
• Max BTU Input: 160000
• Uniform Energy Factor: 0.94
• Approved for Commercial Use: No
• Energy Star: Yes
• Outdoor Approved: No
• Product Variation: Whole House Water Heater
• SCAQMD Compliant: Yes
• Title 20 Compliant: No
• Brand: A. O. Smith
• Special Feature: X3 Scale Prevention Technology
• Flow Rate: 4.7 Gallons Per Minute
• Heat Output: 160000 British Thermal Units
• Efficiency: 0.94 UEF
• Mount Type: Wall
• Is Electric: No
• Style: Indoor NG 240HX3
• Material Type: Copper, Stainless Steel
• Gas Type: NG Natural Gas
• Maximum Gas Input: 160000
• Minimum Gas Input: 15000
• Display Type: LCD
• Connection Size: 3/4"
• Duct Size: 3" Round, 4" Round
• Maximum Flow Rate: 6.7 GPM
• Minimum Flow Rate: 3.8 GPM