As the leader in condensing technology, Navien has already reinvented the water heating industry with the award-winning NPE tankless water heaters and the NCB combi-boilers
The new NHB boiler series is the next in line of innovations from Navien
All NHB boilers have Naviens advanced burner system, an industry-leading AFUE of 95.0% and turn down ratios up to 15:1
Super condensing efficiency
Dual stainless steel heat exchangers
1/2 in gas pipe upto 24 ft
TDR up to 11:1
Integrated controls
Condensing technology offers the high efficiency
Money and energy savings over other boilers and traditional water heater
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 in PVC, CPVC, polypropylene venting up to 60 ft
3 in vents can be used up to 150 ft with standard 2 x 3 in adapters
Utilizes existing 1/2 in gas line
Specificationsarrow_drop_down
Application: Commercial/Residential/Dual
Connection Type: 3/4 in NPT
Dimensions: 17 in W x 12 in D x 24 in H
DOE Heating Capacity: 51 MBtu/hr
Domestic/Import: Import
Efficiency Rating AFUE: 95%
Flue Outlet Size: 1/2 in
Fuel Type: Natural/Liquid Propane Gas
Gas Type: Natural/Liquid Propane
Housing Material: Cold Rolled Carbon Steel
Ignition Type: Electronic
Includes: Illuminated Front Panel with Advanced Hydronic
Input Capacity: 8000 to 55000 Btu/hr
Mfg Standards/Approvals: ASME Specified, AHRI® Certified, CSA Certified, Certified to NSF/ANSI 372, Comply with SCAQMD 1146.2 Low NOx Emissions Standard, Design® Certified, Energy Star® Qualified
Mounting Type: Wall
Package Weight: 73 lb
Series: NHB
Type: Hot Water
Vent Size: 2 in
Vent Type: Forced Draft Direct
Voltage Rating: 120 VAC
Warranty: 1 Year on Labor/5 Years on Parts/15 Years on Heat Exchanger