Heatflam FN Series Ultra Low NOx Burners

High-temperature nozzle-mix burners engineered for strict emission compliance in continuous and non-continuous industrial furnaces. The FN Series delivers ultra-low NOx performance (<30 ppm) while maintaining high efficiency and stability, making it ideal for galvanizing, forging, and heat treatment applications.

FN Series (High Temperature & Low Emissions)
Versatile combustion systems available in five sizes from 0.25 to 2 MBtu/h (66–530 kW), designed for heavy-duty industrial heating.

• Ultra-Low Emissions: Achieves <30 ppm NOx at 3% O₂ in most high-temperature furnace environments (operating below 2000°F).

• High Temperature Capability: Rated for maximum process temperatures up to 2800°F (1540°C).

• Preheated Air Tolerance: Standard models accept up to 300°F (150°C) combustion air; insulated body versions handle up to 1100°F (600°C).

• Multi-Fuel Versatility: Seamlessly burns natural gas, propane, or butane without requiring nozzle changes.

• Operational Flexibility: Features a 10:1 turndown ratio and independently adjustable air/gas inlets (90° increments) for easy piping integration.

• Direct Ignition: Reliable operation with no pilot required; utilizes direct spark ignition.