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Navien Introduces NFB-C Commercial Fire Tube Boilers

Navien’s new NFB-C is available in two sizes: NFB-301C (301 MBH) and NFB-399C (399 MBH). The in-house designed and manufactured heat exchanger is form-pressed and robotic laser-welded to minimize the number of weak points that could be prone to thermal stress and corrosion.

The industry-leading 97.5% thermal efficiency NFB-C series includes a 15:1 turndown ratio, top and bottom piping connections for installation flexibility and an advanced 7-inch color touch-screen display with easy intuitive navigation for setup, troubleshooting and operation. Additional features are low NOx levels, 3-inch venting up to 60 feet or 4-inch venting up to 150 feet with PVC/CPVC/PP/SS-approved materials and Modbus/BACnet and LonWorks to BMS communication capability.

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