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Navien's NFB Condensing Fire Tube Boiler
At 95% AFUE, NFB boilers have been awarded the ENERGY STAR 2019 Most Efficient rating. Such high boiler efficiency results in low operating costs, saving homeowners money. The patented in-house designed and manufactured heat exchanger takes the fire tube technology to a completely new and higher level benefitting design engineers, contractors, and homeowners by offering exceptional efficiency and years of reliable performance. The NFB’s sleek design offers significant space savings, and its light weight makes installations an easy task.
The sophisticated gas flow control system provides 10 to 1 turn down ratio resulting in energy savings while minimizing unnecessary boiler cycling. Every boiler comes with the field conversion kit from natural to propane gas, adding to flexibility of applications. Built-in hardware allows connection to a boiler pump, 3 zone pumps, or 3 zone valves.
The advanced user interface and controls have intuitive display that saves installers time by providing quick, easy boiler set up, diagnostics, and troubleshooting.
Remote access via NaviLinkTM provides control of the water heaters, ability to view operation status and historical performance data, and receive diagnostic notifications.
The extremely low NOx levels, certified by SCAQMD to meet the most stringent code requirements, offer an environmentally friendly solution.
Multiple venting options and materials along with exceptionally long vent lines, up to 150 ft., simplifies the jobs for engineers and installations. NFB boilers can also be common vented up to 8 units and cascaded up to 16 units which makes them a perfect solution for any heating application.