- 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

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’..

Field Convertible

- 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.