Fire Tube Boiler

The NFB-C boiler from Navien is available with maximum heating inputs of 301,000 or 399,000 BTUH. It offers a 15:1 turndown ratio and a thermal efficiency of up to 97.5%. The units are built with form-pressed and robotic laser welded heat exchangers and feature top and bottom piping connections, as well as a 7” colour touchscreen display.