A.O. Smith® 100123440 ATI-540H Tankless Water Heater, Liquid Propane

  • Commercial / Residential / Dual: Dual
  • Energy Factor: 0.95
  • Flow Rate: 10 gpm
  • Fuel Type: Liquid Propane
  • Heating Capacity: 199,000 BTU/hr
  • Indoor / Outdoor: Indoor
  • Ultra Low NOx: Yes
  • Vent Size: 3 in, 4 in
  • Vent Type: Power Direct
  • Condensing / Non-Condensing: Condensing
  • Dimensions: 23-5/8 in H x 17-3/4 in W x 11-1/4 in D
  • Gas Connection: 3/4 in NPT
  • Ignition Type: Electronic Spark
  • Manufacturer: A.O. Smith
  • Manufacturer #: ATI-540H-P
  • Material: 316L Stainless Steel/Copper
  • Pressure Rating: 8 to 14 psi
  • Series: 540
  • Type: High-Efficiency
  • Water Connection: 3/4 in NPT
Ultra-Low NOx gas tankless water heaters with condensing technology featuring an unprecedented 0.95 Energy Factor which lowers operating costs and is environmentally friendly.

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A.O. Smith® Tankless Water Heater, Series: ATI-540H, 199000 Btu/hr Heating, Liquid Propane, 3/4 in NPT Gas Connection, Electronic Spark Ignition, Power Direct Vent, 3 in, 4 in Vent, Condensing/Non Condensing: Condensing, 10 gpm, 0.95, 3/4 in NPT Water Connection, 15 to 150 psi, Ultra Low NOx: Yes, Indoor/Outdoor: Indoor, 17-3/4 in W x 11-1/4 in D x 23-5/8 in H, Dual
  • Features
  • Includes
  • The ATI-540H-P tankless water heater uses up to 199000 Btu/hr of liquid propane to deliver an endless supply of hot water for a 3 bath home in northern climates and up to a 4 bath home in southern climates (one shower head per bath)
  • Easy link up to 4 heaters
  • Multi-link up to 20 heaters
  • Air fuel ratio (AFR) sensor
  • Exhaust and water temperature safety control
  • Overheat cut-off fuse
  • Provides flexible venting with PVC, CPVC or ABS pipe for intake and exhaust (solid core only)
  • Category III or IV venting can be used
  • Certified from sea level to 10100 ft elevation
  • Indoor model - Built-in temperature controller and advanced diagnostics to simplify troubleshooting
Integrated Temperature Controls and Advanced Diagnostics to Simplify Troubleshooting