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- NHW-A is designed with the patented ComfortFlow® recirculation pump and buffer tank within the unit. This Navien exclusive innovation resolves the need for an external pump and controls because all the components and recirculation system controls are built-in. The ComfortFlow system also promotes consistent outlet temperature to minimize the “cold-water sandwich effect”. All NHW-A models are available with built-in internal and external recirculation* technology to program Always-On, Weekly** or an Intelligent mode that learns hot water usage patterns. Selecting any of these options will save water by reducing wait time for hot water at a fixture.
- Built-in recirculation pump & buffer tank
- NaviTech stainless steel heat exchanger and burner
- Cascading capable
- Low NOx emissions (20ppm)
- Flow Rate7.4 gpmFuel TypeLiquid Propane / Natural GasHeating Capacity199,900 BTU/hrIndoor / OutdoorIndoorVent Size3 in, 5 inVent TypeForced Draft DirectBody Shell MaterialCold Rolled Carbon SteelDimensions17.3 in W x 26.5 in H x 10.3 in DFrequency Rating60 HzIgnitionElectricManufacturer #NHW700-199AI-LPMaterialStainless SteelMounting TypeWallNatural Gas Supply Pressure3.5 to 10.5 WCPressure Rating150 psiPropane Gas Supply Pressure8 to 13 WCSeriesNHW-ATemperature Rating98 to 140 deg FUniform Energy Factor0.81 UEFVoltage Rating120 VWATTS115 WWeight72 lbs