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The 540 series is well suited for residential use. Utilizing commercial grade copper alloy for the heat exchanger tubing, the 540 series is also suitable for heavier-residential usages such as domestic recirculation systems. Remote control included as a standard feature on all Outdoor models. Indoor models are certified up to 10,100 ft. altitude. Provides a variety of installation options: outdoor and direct vent. Complies with Ultra-Low NOx regulations and meets the energy efficiency requirements. Easy-Link System capable up to 4 units. The ATI-540H-N tankless water heater uses up to 199,000 BTU/hr of natural gas 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). Utilizing condensing technology, this heater is extremely efficient with a Uniform Energy Factor of 0.93. With an industry leading 15-year limited warranty, the ATI-540H-N tankless water heater provides years of hot water through innovation and quality.
- Emissions: Ultra-Low NOx
- Maximum BTUs: 199,000
- Minimum BTUs: 15,000
- UEF: 0.93
- Limited Heat Exchanger Warranty: 15 Years
- Limited Parts Warranty: 5 Years
- Water Connection Location: Bottom
- Water Connection Size: 3/4"
- Heat Exchanger: Commercial Grade Copper
- Secondary Heat Exchanger: Stainless Steel
- Voltage: 120
- ENERGY STAR®: Yes
- LEED Rating: 1.5
- Digital Display: Yes
- Remote Control: Yes
- Technology: Condensing
- Height: 23 5/8"
- Width: 17 3/4"
- Depth: 11 1/4"
- Product Weight: 59lbs/27kg
- Shipping Weight: 70.9
- Vent Type: Power Direct Vent
- Vent Length: 70 feet at 3 diameter
- 100 feet at 4 diameter
- Vent Material: PVC, CPVC, PP, ABS, SS
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