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NFB700‑C
NFB700-C
The NFB700-C Series is Navien’s first floor-standing condensing fire tube boiler, built for demanding commercial applications. With capacities from 500 to 1,000 MBH and turndown ratios up to 15:1, these boilers deliver reliable, efficient heating in a compact footprint.
By combining Navien’s innovative fire tube design with a floor-standing format, the NFB700-C delivers the high input capacity, efficiency, and certifications specified for large commercial boilers, providing engineers with a reliable solution built to the highest standards.
Low operating costs with an industry-standard thermal efficiency rating of 97.5%.
Advanced gas control system reduces energy waste and excessive boiler cycling.
Advanced stainless steel
fire tube heat exchanger.
Smart controls with 10.1" color touch display with built-in Wi-Fi connectivity.
NG to LP field convertible and dual Venturi for consistent air-to-gas ratio.
Capable of cascading
up to 8 boilers.
Proven controls and technology in boiler capacity up to 1 million BTU/h.
Low NOx at less than 20ppm.
At the core of every NFB700-C is Navien’s stainless steel fire tube heat exchanger, engineered for strength, durability, and thermal performance.
The NFB700-C is engineered with advanced onboard intelligence to simplify installation, optimize temperature control, and streamline daily operation, making it ideal for complex institutional heating systems.
Navien Startup Wizard makes navigating through the setup operations and troubleshooting simple.
Set your language, date, time, and temperature easily with a tap on the screen.
Customize your system with zone or pump settings, outdoor reset/curves, outdoor high/low temperature and WWSD functions.
Security passwords, WiFi mobile app, and QR code for registration are all built into the system.
The extensive clear text service feedback also helps troubleshoot most issues.
Whether replacing aging boilers or installing new systems, the NFB700-C is designed for fast, straightforward setup.
The Navien cascade technology provides both preset and customizable system control. This allows setup to optimize the heating demand staging, while enhancing the energy savings.
The NFB700-C is engineered with multiple layers of protection for enhanced operation safety in demanding commercial environments.
Together, NFB700-C features help prevent against common failure points, reduce downtime, and support compliance with commercial safety codes.
Designed for performance and sustainability, the NFB700-C helps facilities lower energy bills while meeting emissions requirements.
