NHB
CONDENSING HEATING BOILER
The integrated control provides industry leading options and features in the boiler operation parameters, including:
- Adjustable heat capacity.
- A timed hydronic supply water boost feature.
- Adjustable anti-cycle timer.
- Freeze protection.
- Pressure LWCO with manual reset.
- Adjustable minimum burner time setting.
- Adjustable turndown ratio timing.
- Outdoor reset and domestic hot water priority.
- Adjustable outdoor temperature reset curves.
- Field gas convertible.

NHB-55Max HTG Input: 55,000 BTU/HIndoor wall-hungResidential/CommercialSee this model

NHB-80Max HTG Input: 80,000 BTU/HIndoor wall-hungResidential/CommercialSee this model

NHB-110Max HTG Input: 110,000 BTU/HIndoor wall-hungResidential/CommercialSee this model

NHB-150Max HTG Input: 150,000 BTU/HIndoor wall-hungResidential/CommercialSee this model
NFB Series
HIGH-EFFICIENCY CONDENSING HEATING BOILER
- Patented stainless steel heat exchanger —eliminates high-stress point welds.
- Advanced user interface and controls with intuitive text display, simplifies boiler setup.
- Built-in hardware to connect a boiler system pump, 3 zone pumps or 3 zone valves.
- Optional NaviLink Wi-Fi remote control.
- Cascading and common venting capable.
- 10:1 Turn Down Ratio.
- AFUE 95.0% — Energy Star 2018 most efficient rating.

NFB-175Max HTG Input: 175,000 BTU/HIndoor wall-hungResidential/CommercialSee this model

NFB-200Max HTG Input: 199,900 BTU/HIndoor wall-hungResidential/CommercialSee this model
NFB-C Series
COMMERCIAL FIRE TUBE BOILERS
- Robotic and automated manufacturing technology for unmatched quality control.
- In-house designed and built components, for system matched compatibility…unlike most competitors who use the same out-sourced parts to build their boilers.
- Lower installation costs with our innovative engineered compact wall hung design, intuitive controls, top or bottom piping connections and fexible venting options.
- Lower operating costs with the industry’s leading thermal effciency at TE 97.5%…
2019 Energy Star most effcient - Cascading and common venting capable.
- Best-in-class training and technical support.
- One of the industry’s best warranties.
- Top and bottom piping connections for either floor or wall installations.
- BMS connectivity (Modbus, BACnet and LonWorks).
- High altitude installations up to 10,100 ft.

NFB-301CMax HTG Input: 301,000 BTU/HIndoor wall-hungResidential/CommercialSee this model

NFB-399CMax HTG Input: 399,000 BTU/HIndoor wall-hungResidential/CommercialSee this model