NFB-175H & NFB-200H

• 95% AFUE – Energy Star certified

• DHW 15:1 TDR and heating 13:1 TDR

• 2” venting up to 65’, 3” venting up to 150'

• Advanced controls with intuitive user interface and Setup Wizard

• NEW DHW module with mixing and water adjustment valves

• Built-in powered connections for 3 zone valves or 3 zone pumps

• Common venting with up to 7 NPE units and cascading up to 15 NPE units

• Approved for high altitudes up to 10,100 ft. (NG and LP), conversion kits included

• Patented stainless steel fire tube heat exchanger with non-metallic condensate base