NCB 351
A condensing boiler upgraded with KD Navien's technology
World’s best heat efficiency of 98.8%
KD Navien’s green technology takes care of people and nature for a better future.
Unlike regular boilers, the condensing boiler is a high-efficiency and high-tech boiler that does not discharge heat from primary combustion.
Instead, it recycles the heat, using it once more.
Saving gas charges by 28.4% at maximum
The condensing boiler not only helps to reduce fine dust by lowering nitrogen oxide emissions, but also restrains the greenhouse effect by reducing CO2 by 479kg per year. This amount of CO2 reduction is equivalent to planting 208 pine trees.
Slim and compact size for easy installation anywhere!
The size is smaller by up to 29% compared to existing boilers.
※ In comparison to KD Navien’s boilers with the same specification
A neat design with a delicate touch that looks good in any home interior!
The product adopts a high-quality integral stainless heat exchanger.
-Lifespan is 3.8 - 4.5 times longer than other heat exchangers, thanks to its resistance to corrosion and erosion
- KD Navien's condensing technology leads condensing history in Korea with its first development in Asia!
- Slim-type boiler technology reduces the length of flame
- Eco-friendly power combustion system with NOx emissions reduced by 25% compared to existing boilers
- Combustion is vastly improved by controlling the amount of blast based on the optimal combustion condition.
The optimized design allows fast, one-step service.
The bypass that promotes more stable heating is applied.
The fine temperature control solves the problem of temperature fluctuation.
ASA control uses new technology to control the size of the flame and heating speed for each housing environment and temperature change based on multi-sensors.
Dual sensing control is the secret behind comfortable floor-type heating.
As the temperature of water after heating a room is checked once more, this product not only realizes more comfortable heating than existing boilers, but also saves more gas charges.
The product uses Navien’s technology and knowhow to swiftly supply hot water. It maintains a constant amount of hot water at a certain temperature, even when hot water is used simultaneously in several places.
-30 - 60℃ at 1℃ intervals
Every detail is handled for your family's happiness and safety!
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Korea’s only APS (Air Pressure Sensor) is safe, even when there's heavy wind.Combustion is ensured, even in heavy wind as fast as 55m a second. The boiler can be safely used in a high-rise apartment, residential building, or waterfront with heavy wind without worrying about headwind.
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State-of-the-art digital gas & air proportional controlPrecise digital combustion method! Optimal combustion is realized by controlling the amount of gas and air with an advanced digital method.
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Dual CPU for dual detectionThe Double Safety System uses 2 CPUs to monitor the boiler 24 hours a day.
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Smart freeze prevention systemThe design effectively prevents the freezing of hot water pipes.
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Part failure notificationsA/S can be swiftly provided in response to part failure notifications.
Harmony of sophisticated style and convenient function
- Slim design matches well with any home interior
- Reservation heating available 24/7, based on your lifestyle
- Backlight for visibility in the dark
- Touch type that anyone can use
* The indoor thermostat may differ, depending on on-site requirements.
