A.O. Smith 100123498 ATI-140H Tankless Water Heater 120,000 BTU/hr (6.6 GPM)

Product Description

The A.O. Smith 100123498 (ATI-140H) is an indoor liquid propane condensing tankless water heater delivering 120,000 BTU/hr and up to 6.6 gallons per minute. It features ultra-low NOx condensing technology, a copper primary heat exchanger with a 316L stainless steel secondary, electronic ignition, air-fuel ratio sensing, exhaust and water temperature safety controls, built-in temperature controller and advanced diagnostics, and supports power direct venting for 3 in or 4 in systems.

• Condensing design with ultra-low NOx (0.93) and copper primary plus 316L stainless steel secondary heat exchangers
• Delivers up to 6.6 GPM (rated 3.3 GPM at 67°F temp rise) and 120,000 BTU/hr with electronic ignition
• Power direct vent compatible with 3 in or 4 in venting, AFR sensor, exhaust/water temperature safety controls and overheat cut-off fuse

Product Highlights

Indoor liquid propane condensing tankless water heater; 120,000 BTU/hr; up to 6.6 GPM; ultra-low NOx; compatible with 3" or 4" power direct venting; approved to 10,100 ft elevation.

Product Information

Standard Information

• Brand: AO SMITH
• Manufacturer Part Number: 100123498
• Country of Origin: US

Technical Specifications

• Brand: A.O. Smith
• Manufacturer Part Number: 100123498
• Model / Series: ATI-140H
• Fuel Type: Liquid Propane
• Heating Capacity: 120,000 BTU/hr
• Maximum Flow Rate: Up to 6.6 GPM
• Rated Flow (67°F temp rise): 3.3 GPM
• Uniform Energy Factor (UEF): 0.9
• Condensing: Yes
• Ultra-Low NOx: Yes (0.93)
• Primary Heat Exchanger: Copper
• Secondary Heat Exchanger: 316L stainless steel
• Ignition Type: Electronic ignition
• Safety Controls: AFR sensor; exhaust and water temperature safety control; overheat cut-off fuse
• Vent Type: Power direct vent
• Vent Size: 3 in or 4 in (3" PVC up to 70 ft; 4" PVC up to 100 ft)
• Vent Compatibility: PVC, CPVC, ABS (solid core only), Category IV stainless steel
• Installation Type: Indoor
• Operating Altitude: Approved up to 10,100 ft
• Gas Connection: 1/2 in NPT
• Water Connection: 3/4 in NPT (bottom location)
• Pressure Rating: 15 to 150 psi
• Dimensions: 13-7/8 in W x 10-13/16 in D x 22-7/8 in H
• Weight: 53 lbs
• Minimum BTUs: 15,000
• Power Source: Gas
• Applications: Commercial / Residential
• Certifications / Compliance: Complies with California SCAQMD Rule 1146.2 (low NOx)
• ASME Certified: No
• UPC: 671657177324