GTS-310U-I State 190K BTU 15 Year Low NOx Tankless Natural Gas Water Heater

• Ultra-Low NOx emissions
• 190,000 BTU/hr max
• 15,000 BTU/hr min
• 0.81 UEF
• 15 Year limited heat exchanger warranty
• 5 year limited parts warranty
• Bottom water connection
• 3/4" water connection size
• Copper heat exchanger
• 120 V
• Digital Display
• Non-Condensing

Install Instructions
Specification Sheet

The 310U Series is great for two bath homes in cold climates. The 310U features a max flow rate of 8.0 gallons per minute providing enough hot water to run three showers at the same time. The design allows for a variety of installation options. Complies with Ultra-Low NOx regulations and meets energy efficiency requirements of ASHRAE 90.1b-1992. The GTS-310U-I tankless water heater uses up to 190,000 BTU/h of natural gas/liquid propane to deliver an endless supply of hot water for a 2.5 bath home in northern climates and up to a 3.5 bath home in southern climates (one shower head per bath). The GTS-310U-I is ENERGY STAR qualified with a Uniform Energy Factor of 0.81. With an industry leading 15-year limited warranty, the GTS-310U-I tankless water heater provides years of hot water through innovation and quality.