Heating Boilers

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-55

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

NHB-80

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

NHB-110

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

NHB-150

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-175

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

NFB-200

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-301C

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

NFB-399C

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