The Clearfire, model CFC, satisfies economic and environmental demands for today. It features a combustion system with pre-mix down firing burner, which is fundamental to achieve efficiencies up to 99% and NOx levels to less than 20 ppm. Using natural gas and propane the Clearfire CFC is suitable for central heating and indirect hot water supply for working pressures up to 3 bar or 5bar depending on output required.

• Rugged stainless steel construction with 20 year thermal shock guarantee
• Ultra-high performance (full condensing) with efficiencies to 98%
• Fully modulating burner with variable speed fan
• "Whisper" quiet operation with a decibel rating of <70 dB at high fire
• Low emissions; NOx levels to sub-20 ppm
• Sealed combustion capability
• No minimum flow or water temperature requirements
• Low waterside pressure drop

The Clearfire-H's high efficiency is achieved by employing an advanced Fecralloy burner designed to premix air and fuel for optimal combustion. This boiler utilizes Cleaver-Brooks' patented Alufer finned firetubes resulting in unmatched heat transfer and superior fuel-to-steam efficiency. Efficiency is 85% on low pressure steam. With optional economizer efficiency is 85% on high pressure steam.

• Fully-modulating with High-turndown with variable speed blower
• Easily tuned, zero-governor, premix burner - no dampers or linkages
• Low emission (<30 ppm and ,10 ppm CO) - advanced combustion design eliminates need for flue gas recirculation
• High efficiency for greenhouse gas reduction
• Direct spark ignition
• Low gas pressure <14" W.C.
• Quiet operation < 70 DBA
• Single phase power - 115V or 230V
• Natural gas (UL) or propane
• Controls are CSD-1 compliant
• 15# or 150# steam

• Capacities from 400,000 Btu/hr input through 2,400,000 Btu/hr.
• Vertical down fired non-condensing firetube design suitable for central heating for working pressures up to 125 psig.
• Great for hybrid applications.
• Compact footprint.
• UL Certified and Labeled.
• carbon steel tubes, tube sheets, and furnace.
• Patented Alufer Tubes with extended heating surface ensures highest operating efficiency regardless of firing rate.
• Premix Burner for gas firing.
• Linkageless modulation and fuel air ratio control.
• Standard Low NOx emissions < 20 PPM.
• Full and part load efficiencies up to 88% with 5:1 turndown.
• Top hinged burner for easy access to burner and fireside surfaces.
• Extremely quiet operation < 70 dBA at full fire, <50 dBA at low fire.
• CB Falcon control seamlessly integrate up to 8 boilers.
• Easy to maintain.