Fully modulating, natural gas tankless water heater with sealed combustion and power vented flue. Supplies hot water to domestic hot water systems (directly or indirectly) and can be used with water storage tanks, recirculation systems, and/or combined domestic and heating applications.
The GTS-510C-NI tankless water heater uses up to 199,000 BTUs of Natural Gas or Liquid Propane to deliver a max flow rate of 10.0 GPM. It utilizes condensing technology to achieve a Uniform Energy Factor of 0.81. This model meets Ultra-Low NOx requirements, and has a 15-year limited warranty on the heat exchanger in residential applications.