The NCB-H series of High Performance Condensing Combi-Boilers offers industry-leading domestic hot water features including the highest maximum BTU/h for domestic hot water at 210,000 BTUs, the highest flow rate of 5.4 GPM at a 70° rise, and a domestic hot water turndown ratio of 15:1. These state-of-the-art combi-boilers come equipped with the following features:

• Dual stainless steel heat exchangers for heating resist corrosion resulting in longer life and increased efficiency
• The separate stainless steel flat plate heat exchanger for domestic hot water creates the lightest flow rates for any combi-boiler in the industry
• The built-in domestic hot water module generates enough hot water to run up to 3 showers and a dishwasher at the same time
• For increased hot water flow demand, the NCB-H can be cascaded and common vented with up to 15 NPE series tankless water heaters
• The dual venturi system creates better combustion control and turndown ratio
• All units include an orifice conversion kit for field conversion to propane gas
• Easy accessibility to all parts, for faster, streamlined service
• Low noise levels allow for installation near living areas and media rooms without disruption