• ENERGY STAR ® Qualified—these models qualify for the minimum ENERGY STAR ® EF requirement, as well as most utility rebate programs.
  • Interior and Exterior Models—Eight units (Natural Gas and Propane Gas) with self-regulating maximum BTU/hr. inputs ranging from 157,000-199,000.
  • Digital Main Controller—Interior models have a digital controller integrated into the front panel of the water heater with a default temperature range of 98°F-120°F (140°F maximum). Exterior models are shipped with a primary remote controller with a default temperature range of 98°F-120°F (140°F maximum). An optional Main Controller/Residential (p/n 239-48788-00) can be wired remotely and provides a default temperature range of 98°F-120°F (140°F maximum).
  • Commercial Conversion Capability—For application flexibility, all models can be converted to  commercial model with the use of a commercial controller.
  • Commercial / Hydronic Controller—An optional Main Controller/Commercial (239-48789-00) is available for commercial and hydronic applications. (Maximum temperature setting for each model on reverse side).
  • Continuous Flow—Supplies hot water continuously at the temperature set point (up to 9.8 GPM).
  • Dual Heat Exchanger— Maximizes heat transfer and efficiency.
  • Direct Electronic Ignition—No standing pilot.
  • Fully Automatic Controls—Outgoing water temperature is monitored by a built-in sensor. Burner and combustion blower modulate between minimum and maximum input to maintain set point temperature.
  • Frost Protection—Frost protection is automatic as long as gas and power are supplied to the unit.
  • Diagnostic Capabilities—Error messages in numerical codes are displayed on primary control.
  • Space Saving Installation— Compact size for tight installations (mounts on the wall).
  • Lime Accumulation Sensor—Built into the heat exchanger to alert of build-up.
  • Co-Axial Venting—Interior models can be vented horizontally through a wall or vertically through the roof. Maximum equivalent vent length is 41ft. Interior models have dedicated venting system components that must be ordered separately (see I&O manual for specific venting components).
  • Model Number- THE-199I-N
  • Installation- Indoor
  • Nat. BTU/ HR. Input- 9,500-199,000
  • LP BTU/ HR. Input- 10,300-199,000
  • EF Rating Nat. and LP- .94
  • GPM Flow Rate- Min. 0.4 – Max. 9.8
  • Commercial Control Maximum Temperature Setting- 185°F
  • Measurements- 26  13/32 in. X 18 ½ in. X 10 7/64
  • Approx. Shipping Weight- 71 lbs.