On Demand Tankless Hot Water Systems – Navien NPE-240A

Ultra Condensing Efficiency. Navien’s Condensing Technology offers the high efficiency. Money and energy savings over tank type water heaters and traditional water heaters.Two Stainless Steel Heat ExchangersProvides longer life expectancy as they are highly resistant to corrosion and erosion compared to copper heat exchangers.Reduces minerals deposits.Low NOx Emissions (≤ 20ppm). The new metal fiber burner is designed to deliver a consistent air/gas mixture improving combustion efficiency. Result in less acid rain and less green house effect. Comply with SCAQMD 1146.2 strict NOx emissions standard.2” PVC, CPVC, Polyprophylene Venting Up To 60’2” venting option allows for a flue to be pulled through the existing vent.3” vents can be used up to 150’ with standard 2” x 3” adapters.Utilizes Existing 1/2″ Gas Line. The negative pressure gas valve and fan with dual venturi operation allows for better adaptability to low gas pressure applications. Makes it possible for the NPE to be installed ½” gas lines up to 24’.Field ConvertibleNPE models allow for easy convertibility from NG to LP. Less Water Pressure DropSimple modular for water path minimizes water pressure drop. Modular design for water path make maintenance easier and service can be performed easily in the field. Intelligent Preheating TechnologyRecognizes hot water usage patterns to intelligently provide hot water when needed. Data FieldNPE-240AHeat Capacity (Input)Natural Gas19,900-199,900 BTU/HPropane Gas19,900-199,900 BTU/HEnergy Factor NG / LPG (DOE)0.97 / 0.97Flow Rate (DHW)35⁰F(19⁰C) Temp Rise11.2 GPM (42 L/m)45⁰F(25⁰C) Temp Rise8.7 GPM (33 L/m)77⁰F(43⁰C) Temp Rise5.1 GPM (19 L/m)Dimensions17.3″(W) x 27.4″(H) x 13.2″(D)Weight82 lbs (37 kg)Installation TypeIndoor or Outdoor Wall-HungVenting TypeForced Draft Direct VentIgnitionElectronic IgnitionWater Pressure15-150 PSINatural Gas Supply Pressure (from source)3.5″-10.5″ WCPropane Gas Supply Pressure (from source)8″-13″ WCNatural Gas Manifold Pressure (min to max)-0.04″ WC to -0.36″ WCPropane Gas Manifold Pressure(min to max)-0.02″ WC to -0.66″ WCMinimum Flow Rate0 GPM (0 L/m)Connection SizesCold Water Inlet3/4″ NPTHot Water Outlet3/4″ NPTRecirculation Inlet3/4″ NPTGas Inlet3/4″ NPT (Suitable for use with 1/2″ rigid gas pipe; refer to installationmanual for sizing criteria)Power SupplyMain Supply120 V AC, 60HzMaximum Power Consumption200W (max 2A), 350W (max 4A) with external pump connectedMaterialsCasingCold rolled carbon steelHeat ExchangersPrimary Heat Exchanger: Stainless Steel Secondary Heat Exchanger:Stainless SteelVentingExhaust2″ or 3″ PVC, CPVC, Polypropylene 2″ or 3″ Special Gas Vent Type BH (ClassII, A/B/C)Intake2″ or 3″ PVC, CPVC, Polypropylene 2″ or 3″ Special Gas Vent Type BH (ClassII, A/B/C)Vent Clearances0″ to CombustiblesSafety DevicesAPS, Ignition Operation Detector, Water Temperature High Limit Switch,Exhaust Temperature High Limit Sensor, Power Surge Fuse