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Condensing combi-boiler series enables water, space heating

March 10, 2021 By    

Navien’s NCB-H condensing combi-boiler series includes five models, ranging from 160,000 Btu per hour for domestic hot water (DHW) and 60,000 Btu per hour for heating, to 210,000 Btu per hour DHW and 150,000 Btu per hour heating. The NCB-H uses dual stainless steel heat exchangers for heating and a separate flat plate stainless steel heat exchanger for DHW. Features include 15:1 TDR for DHW and up to 11:1 TDR for heating, advanced controls with intuitive display, built-in DHW recirculation controls, 2-in. venting up to 65 ft. and 3-in. venting up to 150 ft., common venting capability with up to seven NPE tankless water heaters, cascade capability with up to 15 NPE tankless water heaters, field gas convertibility to LP high altitude (up to 10,000 ft.) and a new DHW module with mixing valve and flow adjustment valve.

Photo courtesy of Navien

Photo courtesy of Navien

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