Navien Inc. virtually launched three new products: the NCB-H condensing combi-boiler, NFC-H condensing fire tube combi-boiler and NFB-H condensing fire tube boiler.
Navien’s new NCB-H condensing combi-boiler series includes five models ranging from 160,000 Btu per hour for DHW and 60,000 Btu/h for heating, to an industry first 210,000 Btu/h DHW and 150,000 Btu/h heating. The NCB-H uses durable dual stainless steel heat exchangers for heating and a separate flat plate stainless steel heat exchanger for DHW.
Advanced features on the NCB-H include 15:1 TDR for DHW and up to 11:1 TDR for heating, advanced controls with intuitive display, built-in advanced DHW recirculation controls, 2-inch venting up to 65 feet and 3-inch venting up to 150 feet, common venting capability with up to 7 NPE tankless water heaters, cascade capability with up to 15 NPE tankless water heaters, field gas convertibility to NG high altitude (5,400 feet to 10,100 feet) or LP (up to 10,000 feet) and a new DHW module with mixing valve and flow adjustment valve.
NCB-H is available to ship from Navien immediately.
Navien also revealed updates to its fire tube lines with the NFC-H fire tube combi-boilers and NFB-H fire tube boilers. Both the NFC-H and NFB-H now offer turndown ratios up to 15:1, powered connections for three zone pumps or three zone valves, easy to use Setup Wizard for improved installation, 2-inch venting up to 65 feet and 3-inch venting up to 150 feet. The NFC-H also includes increased DHW performance with up to 210,000 Btu/h for DHW, offering up to 5.4 GPM at a 70-degree temperature rise. Both the NFC-H and NFB-H will begin shipping from Navien in April 2021.