Gas heating boilers, wall-mounted double-circuit Navien. We study the Navien wall-mounted double-circuit gas boiler - design features, advantages and disadvantages. Floor standing boilers Navien

If you choose a heating system for your home, then you should look at the Korean Navien Deluxe gas systems at a very attractive price. The Navien gas boiler is a reliable and durable device that is unpretentious in use. Only Korean materials are used in the manufacture. The Navien gas boiler has proven itself and is considered an ideal example of good quality and low price.

The country has developed service centers that service Navien double-circuit gas boilers, so with the slightest malfunction, you will always receive fast and qualified assistance. The Korean brand Navien is considered the leader in the manufacture of heating systems in Asia. The quality control mechanism, which is used at the plant where Navien double-circuit gas heating systems are manufactured, meets the most stringent quality standards.

Heating boiler Navien: sales leader

Navien gas boilers are leaders in the field of heating and water heating devices. Navien offers only high-tech solutions for any premises. In the heating systems market, you will always find a device that will serve you for a long time at a very low price. Navien wall mounted gas systems are designed for heating apartments and small private houses.

Deluxe brand Navien are household double-circuit boilers with open and closed combustion sections. They heat and heat water for domestic and technical purposes. All automation is in Russian, which allows not only to correctly read the instructions, but also save on heating and constantly maintain the optimum temperature in the room. Reliable and safe operation of the boiler performs its functions even with regular power failures. If the mains voltage fluctuates, the SMPS protective function is activated in the systems and then the mechanism works smoothly. That is why such wall-mounted double-circuit boilers have a long service life and protect the owners from breakdowns and further repairs.

Even with minimal gas pressure, you can use heating and hot water. A strong protection system prevents the owners from freezing. If the media temperature drops, the frost protection mechanism is automatically activated and the circulation pump starts to operate. The system provides reliable and uninterrupted circulation of the heat carrier. You can use hot water even at low pressure.

Wall-mounted double-circuit boiler Navien works great with low water pressure up to 0.1 bar, so it is widely used in residential areas with minimal water pressure in the water supply, as well as with constant power failures. The buyer receives a long service life of a wall-mounted double-circuit boiler, thanks to a heat exchanger made of reliable steel, which prevents rust and corrosion.

The Navien wall-mounted double-circuit boiler works on the basis of the APS mechanism, which guarantees stable combustion and reduces costs for gas. The mechanism controls the amount of gas that enters the burner, ensuring total combustion of the fuel, reducing its consumption. The fan with control of speed of rotation promotes safe burning. Therefore, the Navien wall-mounted double-circuit boiler can be used in apartment buildings. The convenient location of the APS mechanism prevents condensation.

Features of the Navien boiler design:

• circulation pump;
• universal separate heat exchanger;
• automatic control system;
• the ability to operate the boiler on natural and liquid gas;
• convenient choice of heating mode. You can choose any temperature that will be present in the house;
• timer function. You can set any time to stop the boiler. The Navien boiler will work for half an hour during the set time with a further shutdown. If you set the time to 4, then heating will be performed for four hours for half an hour;
• with one function can save fuel and, at the same time, to maintain the temperature at the moment when you are not at home.

Advantages and disadvantages of Navien gas systems

Navien gas boilers have a number of advantages, namely:

• frost protection device. When the room temperature drops, the system automatically activates the anti-freeze protection mechanism. If the water temperature drops to 10 degrees or below, circulation pump starts automatically, which ensures uninterrupted circulation of the heat carrier in the heating device. If the water temperature drops below 5 degrees, the burner automatically starts to work and the heat carrier warms up to 22 degrees;
• control of the turbocharging system. The turbocharging fan, which is located in the Navien Ice Turbo boilers under the combustion chamber, changes the speed of the counter. It moves from the APS air pressure mechanism. Thus, air enters the combustion chamber of the system in an amount proportional to the amount of gas supplied. Only such a device for the operation of the Navien Ice Turbo system with an installed fan under the combustion chamber and the use of the APS mechanism allows for total combustion of gas and minimal heat loss;
• stainless steel heat exchanger. Compared to copper, it is highly resistant to rust and corrosion. And this greatly extends the service life. Despite being resistant to rust, the stainless steel heat exchanger not widely used in boilers, since the heat conductivity is much less than that of a copper heat exchanger. And only in Navien Ice Turbo boilers can a modulated turbocharging system be used to increase the efficiency of the system;
• durable and safe operation of the system in case of constant failures. The SMPS mechanism installed in the microprocessor protects the system from power failures. Only the Navien boiler works without significant drops. That's why the service life of the Navien system is much longer than other devices;
• an amazing opportunity to use heating and hot water at low pressure;
• the device works great with low water pressure;
• amazing heating technology.

A portable system control distance with a built-in temperature mechanism helps not only save on gas consumption, but also significantly reduce heating costs. Therefore, your home will always have the optimum temperature.

The disadvantages of Navien gas boilers include a permanent connection to the network and, despite protection, the high sensitivity of sensors to voltage failures. To solve this problem, different stabilizers and batteries are used.

ATMO model

Navien ATMO gas boilers have a system for removing emerging vapors through a simple chimney. This design adapted to work in extreme conditions with strong changes in the voltage and pressure of the gas pipeline.

HSN model

This is Navien's most modern gas boiler, which has high performance through the use of steam temperatures. The heated condensate is collected in a heat exchanger, which heats the water flow. Thus, the costs of sources and energy carriers for heating the heat and water exchanger are reduced.

How to install a wall hung boiler?

So, you have purchased a gas boiler, installed a gas pipeline, installed heating, and now it remains to assemble everything into one system. Connecting any gas boiler is not a very easy task. And it's not even that such the system is a high-tech device, the problem is a little different - each device has its own connection method. Therefore, the installation of the boiler must be carried out by qualified specialists.

Before installing the boiler, if it does not have the necessary equipment, you must buy:

• temperature emergency mechanism;
• power device;
• thermometer;
• pressure mechanism;
• fuse.

Usually all boilers are equipped with such a complete set.

When installing heating systems with an open combustion chamber, you must have a separate room. Its area should be 4m2 or more, and the ceiling height should be 2.5 m. There should also be a ventilation system. When installing heating systems with a closed combustion chamber, such requirements do not apply. If you are installing a system need to have an outlet with automatic safety switch. It is important to connect the stabilizer. The boiler is grounded. If the wall on which the boiler is installed is not resistant to fire, then it must be sheathed with protective material. After getting holes between the pipe and the wall, they need to be sealed with cement mortar. Before connecting the thermoblock, check that there is no debris in the slots.

Connecting the heating system is a complex process that must be carried out by specialists. If you want to buy a Navien gas boiler, then everyone will be satisfied with its low cost, and even free installation will pleasantly surprise you.

The company "Kyung Dong NAVIEN" presents under the brand name "NAVIEN" a double-circuit wall-mounted gas boiler with a closed combustion chamber, adapted to Ukrainian operating conditions and having a good price-quality ratio. Boilers NAVIEN work without problems in our conditions. They are not afraid of the low pressure of gas and water, they can easily cope with voltage drops in the network. The operation of NAVIEN boilers is characterized by a long service life and economical gas consumption. NAVIEN boilers comply with all norms and standards adopted on the territory of Ukraine, and have the appropriate certificates.

Freeze protection system.

When the room temperature drops, the boiler automatically activates the frost protection system. If the temperature of the heating water drops below 10°C, the circulation pump automatically starts, ensuring constant circulation of the coolant in the heating system. When the heating water temperature drops below 6°C, the burner automatically turns on and heats the coolant to 21°C.

Modulated turbocharging system.

The turbocharging fan installed in the NAVIEN Ace TURBO boilers under the combustion chamber changes the rotation speed according to the signal from the APS (Air Pressure System) air pressure sensor. Thus, air is supplied to the combustion chamber of the boiler in an amount proportional to the amount of gas supplied. It is this system of operation of the NAVIEN Ace TURBO boiler, with the installation of a fan under the combustion chamber and the use of an APS sensor, that made it possible to ensure the most complete combustion of gas and minimize heat losses associated with smoke removal. The performance of NAVIEN Ace TURBO boilers has increased without increasing the amount of gas consumed, and the efficiency of NAVIEN Ace TURBO boilers with a stainless steel heat exchanger has become the same as for boilers with a copper heat exchanger.

A heat exchanger made of stainless steel, compared with copper, has a 5-6 times higher resistance to corrosion, which significantly increases its service life. Despite the increased resistance to corrosion, a stainless steel heat exchanger has not been widely used in boilers, since its thermal conductivity is lower than that of a copper heat exchanger. The efficient use of a stainless steel heat exchanger has become possible in NAVIEN Ace TURBO boilers, thanks to the use of a modulated turbocharging system to increase the efficiency of the boiler.

Safe and flawless operation of the boiler with frequent voltage fluctuations in the mains.

The SMPS chip (Switched-Mode Power Supply) on the microprocessor protects the boiler from power surges within ± 30% of 230V. At the same time, the boiler works without failures and stops, due to which its service life is extended and breakdowns associated with unstable voltage are prevented.

Possibility to use heating and hot water with low inlet gas pressure in the gas pipeline system.

The boiler works stably when the incoming water pressure drops to 0.1 bar, so it can be used in residential areas with low water pressure in the water supply system, as well as with frequent pressure drops in the water supply system.

Exceptional heating technology - constant adaptation to room conditions

The remote control panel for the boiler with a built-in temperature sensor allows not only to save gas and reduce heating costs, but also constantly automatically maintains the desired comfortable temperature in the heated room.

Modifications Korea and Coaxial.

NAVIEN Ace TURBO boilers are supplied to the Ukrainian market in Korea and Coaxial modifications.
Boilers NAVIEN Ace TURBO Korea and NAVIEN Ace TURBO Coaxial have the same design and specifications, but differ in the smoke exhaust system. For more information, please refer to the NAVIEN Ace TURBO Korea and NAVIEN Ace TURBO Coaxial manuals, which can be downloaded from this page.

gas boilersNavien (Navien) is a highly efficient equipment that can reduce fuel consumption, while ensuring an environmental component in production. Non-volatile equipment includes special technologies that allow you to save a lot of money on heating a private house.

For many years, South Korean-made Navien gas heating boilers have provided consumer comfort, as evidenced by the steady growth in sales of products of this line.

Types of gas boilers Navien

Gas heating equipment has a lot of features and differences. So, Navien gas boilers distinguish:

• by class: economy, standard;
• by installation method: floor, wall;
• by the number of circuits: single-circuit, double-circuit;
• according to the material of the main heat exchanger: steel, including stainless steel, cast iron, copper.

You should also consider the method of removal of combustion products. For example, turbocharged gas boilers can be equipped with a closed combustion chamber, which provides air flow using a 2-channel coaxial chimney of a vertical or horizontal type.

The catalog of goods of this group is widely presented on our website. You just have to choose those household boilers that are suitable for power, price and other technical characteristics. Our products have the appropriate certificates and meet all safety standards. The main thing is that the operation of heating systems takes place in accordance with the instructions, and our specialists will perform installation and connection at any time convenient for you.

Where to buy a gas boiler?

Our online store offers cheap wholesale and retail gas boilers Navien (Navien). All specifications and prices are listed on our website. To order a gas heating boiler for your home, you just need to call us. Both courier delivery and self-pickup from the point of issue are possible. We offer only high-quality Navien boilers, reviews of which can be read in a special section. Place an order online or by phone, which will save you time.

It is well known that South Korea is a high-tech country that supplies the widest range of modern household appliances around the world, including the states of the former USSR. And more recently, this list has been replenished with heating equipment running on natural gas. We present to your attention a product of a well-known Asian brand - the Korean gas boiler Navien, which has been sold in the Russian Federation for several years and managed to gain a certain positive reputation.

Model range of wall-mounted boilers Navien

It should be noted that the first reviews of Russian users about this product were not too enthusiastic. There are objective reasons for this, one of them is frequent leakage of connections, which was eliminated by replacing an expensive set of gaskets. Another nuisance was that the Navien Ace boiler offered at that time pestered users with a late start-up of the burner, when the coolant in the batteries had time to cool down pretty much.

The company has clearly worked on the bugs, as there are much fewer negative reviews, and the number of supporters of the South Korean manufacturer has grown significantly, primarily due to the reasonable price of decent quality products. At the moment, under the Navien brand, 3 types of suspended gas heat generators are offered:

• atmospheric;
• turbocharged;
• condensation.

The atmospheric series of units with an open combustion chamber is represented by the Navien Atmo brand boiler, which replaced the not-so-successful Ace model. The heat generator is adapted to difficult operating conditions, which is reflected in the low operating pressure of gas (from 8 mbar) and water in the centralized network (from 0.6 bar). The series includes 4 boilers with a capacity of 13, 16, 20 and 24 kW, equipped with a copper heat exchanger for heating and a separate stainless steel one for heating water for domestic hot water needs.

Note. Only double-circuit boilers Navien are supplied to Russia and the CIS countries, both in wall and floor versions. In addition, all Navien units are equipped with modulating burners, an integrated expansion tank and circulation pump, as well as an electric ignition system.

The unit is controlled automatically by means of a remote control. In addition to the minimum set of protective automation, the boiler has an additional system that prevents the coolant from freezing. At the same time, the manufacturer prohibits filling the heating system with antifreeze, the heat generator is not suitable for this. The main specifications of the Atmo series are as follows:

• water heating temperature in the heating system - 80 ° C, operating pressure up to 3 bar;
• in the DHW circuit, water is heated up to 60 ° C;
• gas pressure - from 8 to 18 mbar;
• Efficiency - 86%;
• water pressure in the network - from 0.6 to 8 bar.

Turbo models

The line of wall-mounted boilers Navien with a closed combustion chamber includes as many as 3 series of units:

• Deluxe - 7 heat generators with power from 13 to 40 kW.
• Prime - 6 products with a capacity of 13-35 kW;
• Smart TOK - 6 heaters from 13 to 35 kW.

For reference. The hanging boiler Navien Ace Turbo is a thing of the past, and its place is taken by the Deluxe and Prime brand units.

The difference between supercharged heaters is that the air supply to the closed combustion chamber is carried out forcibly by means of a fan, its performance is controlled by the controller. Air entering through the coaxial chimney from the street enters the sealed housing, where it is captured by the fan. Thanks to forced injection, all these models have an increased efficiency of 92%.

This is where the fundamental differences between turbocharged units and atmospheric ones end. Their equipment is just as rich: the Navien Deluxe wall-mounted gas boiler is equipped with an expansion tank, a pump and an additional heat exchanger for hot water. In addition, the device withstands voltage drops of ± 30 V from the nominal value, and also automatically turns on heating when the coolant temperature drops below 6 ° C, bringing it to 21 ° C.

The Prime series, as well as the Deluxe Coaxial boiler, is equipped with a closed combustion chamber and other functional elements listed above. The difference is in the additional weather-compensated automation module that controls heating depending on environmental conditions. The SmartTOK series is even more automated, these boilers can be controlled remotely via the Internet. To do this, you need to have a smartphone and download a special application to it.

Condensing heat generators

Unlike the modifications discussed earlier, the Navien NCN and NCB boiler heat exchanger is made of stainless steel and is designed to take away not only direct, but also latent heat released during gas combustion. Hence the high efficiency of the units, the manufacturer declares it at the level of 98%. The complete set of products is the same as for turbocharged boilers, only the controller has an extended number of functions, for example, programming the climate in the house for a week in advance. The NCN series consists of 4 products with a heat output range of 21-40 kW, NCB - of 4 heaters from 24 to 40 kW.

As for the technical characteristics, in condensing heat generators, hot water for the heating system can be heated up to 90 ° C, and for hot water - up to 65 ° C. The maximum water pressure in the centralized network has also been increased, the boiler can withstand up to 10 bar. The air supply is forced, it can be carried out both with the help of a coaxial and a separate chimney. That is, the homeowner can choose whether to take air from the street or from the boiler room.

Floor standing boilers Navien

This type of heat generators is positioned by the manufacturer as universal, they can operate on diesel fuel and natural gas. In fact, Korean floor-mounted gas boilers are just as well stuffed with automation as their wall-mounted counterparts. The difference is in the installation method and the maximum power of some models. The line includes 4 series:

• LST, 8 products from 13 to 60 kW.
• LFA, 6 heaters from 13 to 40 kW.
• GA, 7 boilers with a capacity of 11-35 kW.
• GST, 5 units from 35 to 60 kW of power.

In terms of technical characteristics, they are also close to suspended ones, the maximum operating temperature is 80 ° C, pressure - 3 bar. Efficiency index - 91%, air supply method - forced injection.

How to turn on the Navien boiler

A feature of South Korean heaters is the presence of remote control panels, which are supplied with all products. The attached instruction manual states that the boiler can be turned on either using the remote control or using the buttons on the front panel of the unit. This operation is simple: you need to press the "power" button, its location is shown in the diagram:

After starting, the boiler will automatically start working in the mode that was last set on the remote control. To change the settings, you need to take the manual and use it to correctly set all modes. Before starting a new heat generator, you need to install it, connect it to all engineering networks and fill the heating system with water, focusing on the boiler pressure gauge. The location and purpose of the nozzles is shown in the figure:

Navien boiler errors

During start-up and operation, various error codes may appear on the display of the device, indicating a malfunction of the boiler or malfunctions in the heating system. The decoding of all codes is given at the end of the instruction manual, but not always in an understandable language. We will give an explanation of frequently occurring errors.

If the boiler stops and error 02 appears on the display, this indicates that the flow sensor has been triggered in the heating system. The reasons may be:

• the circulation pump is out of order or disconnected from the power supply;
• there is air in the system;
• the filter at the coolant inlet to the boiler is clogged;
• there was a leak, and make-up does not work;
• the sensor itself or its electrical circuit is faulty.

When the unit does not start, and error 03 is on the screen, the cause is in the flame sensor. It works if it “does not see” the fire, which means that there may be problems with the gas supply or its pressure is too low. Also, the cause may be contamination of the ignition electrodes or the surface of the sensor. The failure of the sensor itself or the absence of a signal due to an open circuit cannot be ruled out.

Conclusion

South Korean Navien boilers using natural gas have become familiar to many users, although they have appeared relatively recently. In general, their work is characterized positively, but there are significant shortcomings. For example, a ban on the use of antifreeze in the system, which is very important in harsh winter conditions.

Updated:

The Navien gas boiler is far from the last choice of our domestic consumers when buying heating equipment. During its presence in the Russian market, this Korean manufacturer managed to gain confidence. Therefore, we will get acquainted with Navien gas boilers in more detail.

Navien boiler range

The company Navien specializes in the production of various heating equipment. But the basis of the entire range is gas boilers.

The main feature of the company's products is that the Navien gas boiler is perfectly adapted to Russian operating conditions. Here we are talking about problems with centralized water supply, gas pressure surges and unstable voltage in the power grid. Many foreign models are able to function normally only under ideal conditions. With jumps of the same voltage, malfunctions can immediately occur. Customer reviews of Navien boilers show that malfunctions for them are quite rare.

What gas boilers is Navien ready to offer today to its Russian consumers:

• Wall and floor heating devices;
• Double-circuit and single-circuit models;
• Boilers with closed and open chambers;
• Boilers of a wide range of capacities.

Navien gas heaters are usually distinguished by their performance. The higher the performance, the larger the heated area. Therefore, when choosing a Korean-made boiler, you should focus on floor or wall models. Condensing boilers deserve special attention.

wall models

Navien wall-mounted gas boilers feel great among competitors in the domestic market. Their prices start from 30 thousand rubles, which allows the average buyer to become the owner of high-quality boiler equipment.

But at the first appearance of Korean-made wall models, the manufacturer faced some problems:

• The gas pressure was low. This was especially true for suburban areas;
• Instability in the operation of the water supply, where the pressure kept jumping;
• Fluctuations in the power grid, which are normal for many regions of Russia;
• There were very few workers capable of servicing and repairing Navien boilers.

Therefore, a number of models had to be abandoned, and concentrated on the implementation of the Ace series. Ace boilers are distinguished by the fact that they are completely unpretentious to operating conditions, they perfectly cope with the problems that the Korean manufacturer had to face when entering the Russian market.

The Ace series of gas boilers has a wide list of advantages, among which we highlight the main ones.

1. Unique control and monitoring unit. It monitors the voltage readings, ensures the normal operation of gas equipment even under conditions of a voltage drop of 30 percent below the nominal value. Plus, the heating unit can withstand power surges up to 30 percent of the nominal. For them, it is not necessary to buy a UPS with stabilizers. Although an uninterruptible power supply will not become superfluous for any electrically dependent boiler.
2. Steel heat exchanger. Navien use a stainless steel heat exchanger, which has excellent heat capacity. This heat exchanger generates thermal energy better, ahead of the copper counterpart. Plus, such a heat exchanger significantly reduces the cost of construction, which has a positive effect on the final cost of the boiler.
3. Frequent malfunctions of boiler plants are caused by a drop in gas pressure in the pipeline. To prevent malfunctions, many manufacturers set a critical pressure threshold at which the boiler turns off. Usually it is 13 millibars. But for Navien, this limit is 4 millibars. This allows the equipment to work even at low pressure.
4. Plumbing problems are not uncommon. Because the pressure can change during the day many times. This was provided for in Navien Asa gas boilers. The design allows the boiler to operate at a pressure of 0.1 bar.
5. Frost protection. So that the coolant does not freeze when the heat exchanger is not working, and there are no malfunctions, the boilers are equipped with an interesting function. When the coolant temperature drops below 5 degrees Celsius, the circulation pump starts. He drives the coolant through the system, preventing it from freezing.

Floor boilers

Navien has recently introduced floor models in Russia. But already now we can say about a wide list of advantages of this gas heating equipment. The series is called GA/GST.

• Although this is a floor-standing boiler, the dimensions have been kept compact, without forgetting to equip the body with a combustion chamber, a hot water tank and a heat exchanger. The heat exchanger here is also steel with a stainless coating. This heat exchanger is distinguished by excellent performance, and is not much inferior to copper elements;
• Branch pipes for hot water supply and heating are located on both sides of the boiler. So the installation process was much easier;
• Attractive design. Most floor-standing boilers are installed in separate rooms, so manufacturers do not think much about design. Navien did not make this mistake, making the unit attractive;
• The burner of the gas boiler works without any noise. So you can rest easy while the boiler is working;
• It is not necessary to build a special chimney if you have an old one. Flue gas can be removed through old systems or through a wall;
• Frost protection works effectively. When the coolant temperature drops to 10 degrees, the circulation pump turns on. And if the temperature reaches 5 degrees, the burner is activated. The heat exchanger heats the coolant, no malfunctions occur;
• A special electronic chip controls power surges. At a rated voltage of 230 V, the boiler can easily withstand surges of 30 percent of the nominal parameters in both directions;
• Floor models of gas boilers from Navien are equipped with remote controls equipped with backlit digital screens. This will allow you in the middle of the night to easily determine how the boiler is currently working and make any changes;
• Additionally, the Navien gas outdoor equipment control panel is located on the body;
• As is the case with Korean-made wall-mounted units, floor-standing units work with mains and liquefied gas.

Condensation models

The NCN line from Navien is the newest. It represents a series of condensing gas heaters, which are characterized by an increased efficiency.

The efficiency of the units reaches 110 percent, which is an impressive figure compared to more experienced competitors.

This is not to say that condensation models have superiority over competitors. But Navien definitely keeps up with the times, is not inferior to more eminent manufacturers. At the same time, the main advantage is attractive prices.

The Korean company Navien demonstrates that high-quality heating equipment does not have to be expensive. Therefore, one can easily explain the high demand for the products of this company among domestic consumers.