The boiler adopts an environmentally friendly combustion method - full premixed combustion, and the gas and air are precisely adjusted and premixed in advance to ensure more complete combustion.
The boiler adopts a double-drum longitudinal "D" type arrangement structure; water, steam or steam-water mixture flows in the pipe; flame burns and flue gas flows outside the pipe, forming extremely fast steam-water.
Navien Tankless Gas Water Heaters & Combi Boilers. Navien manufactures condensing tankless gas water heaters and condensing combi boilers. Navien's products possess state-of-the-art technology, high efficiency and reliable quality, making it the leader in the marketplace for tankless technology.
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