- ½” gas pipe capable up to 24’
- Field convertible gas system
- Ultra condensing efficiency
- Dual stainless steel heat exchangers
- Low NOx emissions (≤ 20ppm)
- SCH 40, 2” venting up to 60’
- Cascading capable
Front Panel Command Center
- Displays temperature and water flow rate
- Displays status of cascade operation
- Convertible display from °F to °C
- User Friendly Interface
- Easy setup
Remote Control (Optional)
- Hot water temperature control
- Recirculation timer setting
- Function to set the number of initial activating water heaters for cascade system
- Temperature set-up for cascade system with external tanks.
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 Exchangers
Provides longer life expectancy as they are highly resistant to corrosion and erosion compared to copper heat exchangers.
Reduces minerals deposits.
Low NOx Emissions (≤ 20ppm)
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’.
NPE models allow for easy convertibility from NG to LP.
Less Water Pressure Drop
Simple 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 Technology
Recognizes hot water usage patterns to intelligently provide hot water when needed.
|Heat Capacity (Input)||Natural Gas||19,900-180,000 BTU/H|
|Propane Gas||19,900-180,000 BTU/H|
|Energy Factor NG / LPG (DOE)||0.97 / 0.97|
|Flow Rate (DHW)||35⁰F(19⁰C) Temp Rise||10.1 GPM (38 L/m)|
|45⁰F(25⁰C) Temp Rise||7.8 GPM (30 L/m)|
|77⁰F(43⁰C) Temp Rise||4.6 GPM (17 L/m)|
|Dimensions||17.3″(W) x 27.4″(H) x 13.2″(D)|
|Weight||82 lbs (37 kg)|
|Installation Type||Indoor or Outdoor Wall-Hung|
|Venting Type||Forced Draft Direct Vent|
|Water Pressure||15-150 PSI|
|Natural Gas Supply Pressure (from source)||3.5″-10.5″ WC|
|Propane Gas Supply Pressure (from source)||8″-13″ WC|
|Natural Gas Manifold Pressure (min to max)||-0.04″ WC to -0.36″ WC|
|Propane Gas Manifold Pressure(min to max)||-0.02″ WC to -0.66″ WC|
|Minimum Flow Rate||0 GPM (0 L/m)|
|Connection Sizes||Cold Water Inlet||3/4″ NPT|
|Hot Water Outlet||3/4″ NPT|
|Recirculation Inlet||3/4″ NPT|
|Gas Inlet||3/4″ NPT (Suitable for use with 1/2″ rigid gas pipe; refer to installation
manual for sizing criteria)
|Power Supply||Main Supply||120 V AC, 60Hz|
|Maximum Power Consumption||200W (max 2A), 350W (max 4A) with external pump connected|
|Materials||Casing||Cold rolled carbon steel|
|Heat Exchangers||Primary Heat Exchanger: Stainless Steel Secondary Heat Exchanger:
|Venting||Exhaust||2″ or 3″ PVC, CPVC, Polypropylene 2″ or 3″ Special Gas Vent Type BH (Class
|Intake||2″ or 3″ PVC, CPVC, Polypropylene 2″ or 3″ Special Gas Vent Type BH (Class
|Vent Clearances||0″ to Combustibles|
|Safety Devices||APS, Ignition Operation Detector, Water Temperature High Limit Switch,
Exhaust Temperature High Limit Sensor, Power Surge Fuse