GTS-540-NIH State 199K BTU 15 Year Indoor Tankless Natural Gas Water Heater

• Ultra-Low NOx emissions
• 199,000 BTU/hr max
• 15,000 BTU/hr min
• 0.93 UEF
• 15 Year limited heat exchanger warranty
• 5 year limited parts warranty
• Bottom water connection
• 3/4" water connection size
• Commercial-grade copper heat exchanger
• Stainless Steel secondary heat exchanger
• 120 V
• Energy Star certified
• 1.5 LEED points
• Digital display
• Condensing

Install Instructions
Specification Sheet

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 GTS-540-NIH 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 GTS-540-PIH tankless water heater provides years of hot water through innovation and quality.