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- Navien’s high efficiency fire tube condensing technology make NFB-C hard to beat and the easy choice for today’s commercial boiler applications
NFB-399C 97.5% COND COMM FIRE TUBE BOILER
- 97.5% TE Industry Leading Thermal Efficiency
- Patented stainless steel fire tube heat exchanger
- 161 PSI maximum operating pressure
- Advanced controls with intuitive 7" color display
- Up to 15:1 TDR (turndown ratio)
- BAS communication capability
- Common vent up to 4 and cascade up to 32 units
- Top and bottom piping
- (2) 3" Vent termination caps, (4) 3" in wall flanges, Air vent, Wall mounting bracket, (4) Tapping screws & anchors, 50 psi Pressure relief valve heating, NG/LP Conversion kit, Outdoor temperature sensor & cable, PRV-Air vent adapter (including clip), Condensate trap, System temperature sensor, Air vent bushing (1-1/4 to 3/4"), Caps with gaskets and Double nipple (3/4 to 3/4")
- AFUE Rating97.5%Boiler Weight With Water371 lbConnection TypeNPTDimensions21.5 in W x 22.3 in D x 32.8 in HFuel TypeLiquid Propane / Natural GasHousing MaterialCold Rolled Carbon SteelIgnition TypeElectronicInput Capacity399,000 BTU/hrManufacturerNAVIEN INCManufacturer #NFB-399CMounting TypeWallSeriesNFB-CTypeHigh-EfficiencyVent Size3 or 4 inVent TypeForced Draft Direct and Non-Direct (single pipe)