You accept the use of cookies as described in our Privacy Policy by clicking 'OK'.
BMS connectivity (Modbus, BACnet and LonWorks).
High altitude installations up to 10,100 ft.
Click here to see what the NFB-C comes with
Human innovation meets robotic precision
Navien’s ASME-certified, “H” stamped stainless steel fire tube heat exchangers are in-house designed and built by the latest in robotic and automated technology, reducing high stress point weld failures common on other boilers.
Navien’s advanced patented stainless steel heat exchanger design is ASME‑Certified, “H” Stamped, and reduces high stress point weld failures common on other boilers. This compact, in‑house designed and manufactured heat exchanger uses the latest automated laser welding technology to deliver superior product quality.
15:1 industry leading
turndown ratio
The sophisticated gas flow control system provides a high turndown ratio which reduces energy waste and excessive boiler cycling while also enhancing temperature control for DHW.
Multiple venting options
Low exhaust gas temperatures allow use of PVC, CPVC, polypropylene (rigid and flexible) and stainless steel venting reducing installation time and costs. System can use 3" venting for up to 60', or up to 150' with 4" venting.
Space saving
The sleek wall - hung design uses much less space than traditional floor standing boilers, making installations a lot easier.
Dual Venturi and field gas convertibility
Dual Venturi system creates better combustion control and turndown ratio. Orifice conversion kit for easy gas convertibility from NG to LP is included with every NFB-C boiler.
Air intake filter
This heavy duty inlet air filter has easy access for cleaning and filter media replacement
Low gas pressure operation
Negative pressure regulating gas valve ensures maximum performance all the way down to 3.5" of water column on natural gas and 8" of water column on propane gas.
Easy intuitive navigation for setup,
troubleshooting and operation.
Download boiler data and settings.
Upload software updates and boiler settings.
All integrated into the NFB-C circuit board. Also includes a DHW priority zone.
With Navien cascading technology, when a boiler gets up to 80% of its capacity the next unit will start to help meet the heating system requirements.
This boiler sequencing will continue until the heating load is fully satisfied. The Navien cascading system also balances out the run hours of each boiler for longer life.
NaviLink & NaviLink Lite make it easy to communicate with your Navien systems anywhere internet service is accessible. The NaviLink system attaches easily to any new or existing* Navien tankless water heater, combi‐boiler and boiler. NaviLink Lite is great for single residential units and magnetically mounts to the side of the unit or can easily be mounted on the wall. Also, NaviLink Lite does not require external power.
* Existing installations may require the purchase of a new main PCB and front control panel.
Available for Download
on IOS or Android
