Advantages of the Navien gas boiler - characteristics

If you are choosing a heating system for your home, then you should take a closer 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 easy to use. Only Korean materials are used in production. 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 if there is the slightest malfunction you will always receive quick and qualified help. The Korean brand Navien is considered a leader in the manufacture of heating systems in Asian countries. The quality control mechanism used in the factory where Navien double-circuit gas heating systems are manufactured meets the most stringent quality standards.

Peculiarities

The Navien Deluxe gas double-circuit boiler has been extremely popular among Russian consumers recently. A pleasant price-quality ratio combined with excellent technical parameters fully explain this preference. It is not at all necessary to choose exactly the 24 kW model in the table of the South Korean manufacturer. But at the same time, it is quite suitable to illustrate the features of devices of this brand.

Navien Deluxe comes with:

• a pair of stainless heat exchangers (for heating and water circuits, respectively);
• expansion tank;
• pump for pumping;
• gas valve;
• another valve equipped with three strokes (switching operating modes);
• security group;
• a number of other parts that support the uninterrupted operation of the heating unit.

The boiler monitors not only the temperature in the heating circuit, but also the flow of liquid through it. The expansion tank is made in the form of a flat product. A device is provided for air release; a differentiating relay is always installed. The system has a fan, electric ignition is organized using a transformer. Separate electrodes provide ionization and ignition itself.

Navien Ace gas boiler series

Navien boilers of the Ice (Ace) series are a family of gas double-circuit units manufactured by the South Korean company KyungDong NAVIEN.

They provide heating to the home and at the same time supply it with hot water. A special feature of Navien equipment is its specialization in Russian conditions, climatic and technological.

It is possible to work at low pressure of gas and water, resistance to changes and sudden surges in pressure.

In addition, there is a protective system that compensates for voltage drops in the power supply network up to 30%.

In addition, the company’s pricing policy is such that the cost of Navien boilers is approximately 2 times lower than European equipment of the same power. Such advantages are highly appreciated by users; the demand for Navien units is stable and gradually growing .

Basic errors and their elimination

Gas boiler units are equipped with a good diagnostic system, which scans the boiler operating parameters every minute and, if they are violated, issues a coded signal to the operating panel to eliminate the malfunction:

Basic failure codes for Navien gas boilers:

1. E01 - overheating of the coolant in the boiler. Insufficient water circulation through the device; it is necessary to check the operation of the pump, the presence of leaks and blockages in the heat exchanger. If the latter is detected, before eliminating the error, it is recommended to flush the heat exchanger from scale using the technology specified by the manufacturer.
2. E02 - error 02, low coolant pressure in the heating circuit. Check for leaks in heating networks and, if necessary, recharge the circuit.
3. E03 - problems in the boiler electric ignition system. It is necessary to check the presence of power in the system, the presence of pressure and the electrode for the presence of a spark.
4. E04 - no flame in the boiler. Monitoring the piezo igniter for the possibility of generating a spark and checking the grounding system.
5. E05 - the temperature sensor of the return coolant at the inlet to the device does not work. Check the functionality of the primary temperature sensor and, if necessary, replace it with a similar option.
6. E06 - the temperature sensor of the supply coolant at the outlet of the boiler does not work. Check the functionality of the primary temperature sensor and, if necessary, replace it with a similar option.
7. E07/08 - the DHW temperature sensor at the inlet or outlet of the boiler does not work. Check the functionality of the primary temperature sensor and, if necessary, replace it with a similar option.
8. E09 - the centrifugal fan does not work. Check the operation of the inlet air filter for blockages.
9. E10 - error 10, problems in the chimney system, no vacuum in the boiler. Monitor the gas outlet channels for blockages.
10. E13 - error 13, problems in the circulation circuit.

What's special about ACE 24k Coaxial

The boiler of this series is a 2-circuit wall-mounted unit that can be easily installed in absolutely any room, be it an apartment, a residential building, a country cottage or an administrative facility. The device has a closed combustion chamber, due to which there is no need to equip a separate boiler room for its installation. You can install NAVIEN Coaxial even in a plumbing unit.

The equipment is well adapted to work in far from simple Russian conditions. It is quite capable of functioning fully at sub-zero temperatures outside the window. Moreover, it is not afraid of low quality coolant and insufficiently stable gas supply. This also applies to voltage drops. And, taking into account the fact that every second family in Russia faces such problems, we can summarize that NAVIEN ACE 24k is suitable for domestic buyers in all respects.

Many manufacturers claim that their unit has the optimal price-quality ratio. However, it is the NAVIEN ACE 24k Turbo model that excels in this parameter better than anyone else. Its cost is truly affordable, and its performance characteristics are surprising. The equipment consumes very little fuel during operation, which will have a positive effect on the family budget, especially in the cold season. And if the slightest malfunction is detected, it can be repaired for relatively little money in one of the service centers.

Model range of Navien boilers with characteristics

Navien gas boilers are designed for organizing heating and hot water supply to private houses with an area of ​​30 to 300 m2. The maximum water temperature is 80°, which meets the requirements of most plumbing fixtures. Navien devices compare favorably with similar samples from other manufacturers. Main advantages:

• Ability to work at low gas pressure.
• Undemanding to the pressure in water pipes.
• Increased circulation when the temperature drops to +5°, protecting the system from freezing.
• Built-in voltage stabilizer capable of correcting deviations up to 30%.
• Prices for Navien equipment are lower than for similar products from European companies.

There are boilers with wall-mounted and floor-mounted installations, designed respectively for smaller or larger areas. The design of different models provides for combustion with supercharging (turbocharged) or with natural air draft (atmospheric), which is ensured by a closed or open type of combustion chamber. They are represented by the Navien Turbo and Navien Atmo series.

In addition, there are two- and single-circuit models designed to provide heating and hot water supply or only for heating rooms.

The Navien equipment line includes the following models:

• Prime. This model range has the maximum configuration; the equipment fully complies with modern ideas about high technology in any industry. Prime double-circuit boilers have all the innovative developments of today. The power range is between 13–35 kW. In total, the line includes 5 standard sizes, differing in power and, accordingly, in size. The devices have a full range of functions; operating parameters are displayed on a liquid crystal display. The price range is between 35–45 thousand rubles.
• Deluxe. Devices in this series have almost the same parameters as the Prime line. The only difference is the absence of an LCD display, but the circuit uses an air pressure sensor (denoted APS in the diagrams). The presence of this device allows you to accurately dose the air stream, ensuring an optimal and economical combustion mode. There is a wide selection of models, ranging from 10 to 40 kW. Prices for devices are in the range of 23–35 thousand rubles.
• Ace. The most common and preferred line of heating devices is Navien. It has an optimal price-functionality ratio. Reliable and high-quality devices have several operating modes (manual, automatic, timer). All installations are fully adapted to Russian conditions and have proven themselves in operation. There are boilers with open and closed combustion chambers (Ace Ftmo and Ace Turbo), connecting the boilers is simple and does not require significant labor costs. You can buy devices from this line for 20–30 thousand rubles.

Please note that Navien recently announced the discontinuation of the Ace range of boilers.

• Steel (GA/GST). The line provides only room heating (single-circuit devices). There is a wide choice of power - from 11 to 40 kW, narrow functionality allows you to get a device that is most specialized for performing its tasks. Reliability increases, reducing the number of structural elements makes it possible to increase strength and resistance to temperature and pressure changes. The design uses durable materials, in particular stainless steel. Devices from the GA or GST lines can have a dual-circuit design and are mainly manufactured in a floor-standing design with high power. The price range depends on the configuration and power of the device and is in the range of 20–56 thousand rubles.
• SmartTok. A device that can be controlled remotely using a smartphone. This method of temperature control allows you to change the microclimate in the rooms as comfortably as possible without leaving them, and optimally adjust the operating mode according to your own feelings. There are three operating modes; an outside temperature sensor is used to adjust the heating depending on weather changes. There is a voice control mode. The price of devices in this line ranges from 30 to 50 thousand rubles.

Adviсe

Even the exceptional skill of South Korean manufacturers does not allow 100% to eliminate the occurrence of violations and problems during operation. Poor water heating is mostly due to the filling of the heating system with air pockets. The problem is solved by removing accumulated air or changing the automatic vent. It is also possible that the filter in the heating circuit is dirty.

This situation can be corrected either by adding water or eliminating the leak. Code 3 indicates that gas is not supplied to the burner. It is necessary to check what position the valve is in, whether the fuel in the cylinder has run out, and whether there are any accidents on the line. Judging by the reviews of the owners, South Korean boilers are more compact than many other versions and are characterized by rapid achievement of the set temperature. But it is noted that there are no control elements on the boilers themselves and that occasionally turning on two hot taps on the water supply reveals insufficient heating power.

If the boiler is leaking, in many cases it is water leaking from a drain plug that is closed too loosely or is leaking for some reason. When the cause is more complex, you will have to remove the problematic unit, disassemble it and clean it. Unscrew the clamping nut and remove the air vent. Using a hexagon, unscrew the plug, then remove the rubber band (a needle or screwdriver with a thin tip will do). The piston and spring are removed, and when the float falls out, you need to wash it and then return it to its place (in the reverse order).

A more detailed overview of the Navien Deluxe boiler can be seen in the following video.

Peculiarities

The Navien boiler is produced by the company of the same name from Korea based on its personal inventions. The result is equipment that is characterized by increased efficiency, cost-effectiveness and fairly simple operation. Thus, it turns out that with the help of this technology it is possible to organize excellent individual heating.

Today on the market from Navien you can find wall heating devices that differ in draft (natural or forced). Such double-circuit units can heat housing with an area of ​​20-500 square meters.

The operation of these devices is carried out according to a completely normal scheme. The heat absorption that is produced when the gas burns heats the boiler heat exchanger. The pump, which is built into the device system itself, allows water to circulate from the heat exchanger. Air is forced into the combustion chamber using a built-in ventilation system.

To ensure a longer service life of heating devices, the manufacturer makes them from stainless steel, so they are well protected from rust and can withstand high temperatures and temperature changes for a long time.

Typically, gas-fired boilers consist of:

• boxes-cases;
• circulation pump;
• burners;
• one or two heat exchangers.

In models from Navien, the burner may have a different structure. For example, in open-type units there must be a chimney that will provide draft. The air for the burner will be taken directly from the place where the boiler is located. This means that such a model will require a constant supply of oxygen into the room.

For closed burners, a chimney is used, which is called coaxial. Through it, oxygen is supplied and products resulting from combustion come out. This device works with forced draft. The ventilation hole itself in this case will be led outside through the wall.

Heat exchangers on dual-circuit heating devices are separate. One of them provides space heating, and the other heats cold water for use. It is worth noting that for the manufacture of both heat exchangers, the Koreans use exclusively stainless steel. This allows you to significantly extend their service life, while in most boilers from other manufacturers only one of the heat exchangers is not susceptible to corrosion.

It is impossible not to note such an important point as the fact that the company independently manufactures all the elements that make up the boiler.

A built-in integrated circuit in the boiler's electronic board provides protection against voltage surges. Such protection is available only in expensive gas equipment from a German manufacturer. However, you should not rely only on the chip; it is better to additionally use a voltage stabilizer.

The most important feature of Navien boilers can be considered a control unit in the form of a small box, which is placed outside. It has a display and buttons that allow you to control the operation of the device. For example, the display shows data on malfunctions or operating errors, water, air and coolant temperatures. You can also set the time on it. The buttons allow you to independently set the boiler operating mode, temperature and turn the equipment on or off.

The power of a gas unit is a fairly important parameter, because productivity depends on it. The greater the power, the more water per minute the boiler can heat. For example, if the power of the unit is 13 kW, then it will produce about 10.5 liters of heated water per minute, and if it is 35 kW, it will produce approximately 19 liters. Practice has shown that a device with a power of 16 kW, which is capable of delivering 14 l/m, is sufficient for an average family.

Managing Navien devices is also very convenient due to the presence of voice guidance systems, which can always give a hint. Self-diagnosis of equipment is also good, as it makes it possible to obtain the necessary data about malfunctions, malfunctions or any errors in the shortest possible time.

With all this, heating equipment is durable, durable, compact and inexpensive. In terms of price-quality ratio, it is better than many German and Italian analogues.

NAVIEN – innovation in action

Navien gas heating boilers are innovative units that use only the most modern technological solutions.

1. The presence of such modern technology makes it possible to make the process of operating equipment simpler, increase productivity and eliminate the occurrence of unforeseen problems.

1. In addition, all information about the operation of the equipment is displayed on the display, and control is carried out literally at an intuitive level.

Mounted wall-mounted boiler

1. Navien boilers are universal equipment, all of which have unique and inimitable qualities. This is innovative equipment, the use of which can be organized both to heat the house and to provide it with an uninterrupted supply of hot water.
2. It is possible to use a timer to set boiler operating modes and perform high-quality preheating of water. The remote control greatly simplifies the boiler maintenance procedure and allows you to quickly set up operating modes.
3. Depending on the temperature or weather conditions, boilers from the South Korean company can operate in manual or even automatic mode. This is very convenient, because in this case you can safely exclude the occurrence of even the smallest errors during the operation of the equipment.
4. Gas heating units from NAVIEN can be safely called an excellent choice for use as the main gas heating device for a country house or any other facility.
5. This equipment is universal and can operate on mainline and even bottled liquefied gas. In order to switch the unit from one operating mode to another, you simply need to change some components in the boiler (usually the burners).

Smoke removal system for NAVIEN Ace boilers

Installation of NAVIEN boilers is a simple and straightforward procedure. Due to the fact that detailed instructions are included with each unit, installation work can be done independently or by contacting specialists from specialized companies.

The only point that must be remembered before starting work on installing equipment is the need for a rational choice of a gas removal system.

As a rule, for the operation of NAVIEN boilers of various modifications, an inexpensive but at the same time effective coaxial pipeline can be used. Installation of such an exhaust system can be done both vertically and horizontally over a total area of ​​up to 110 meters.

For which rooms is it best suited?

The power of the Navien Ace 24 K boiler is designed for operation in industrial, public or residential premises with an area of ​​up to 240 m2.

There are no specific requirements for premises. The units performed well in difficult conditions, with unstable gas and water supply parameters .

The only condition for high-quality operation of the equipment is the proper installation of the boiler itself and the heating system and an uninterrupted supply of electricity.

Relatively small fluctuations (up to 30) in voltage are not a problem for devices, however, judging by user reviews, the automation cannot cope with fluctuations and requires a stabilizer.

Navien presents a universal water heating system

Navien Ace gas boilers are not afraid of low pressure of gas and water, they are not afraid of voltage drops in the network. The operation of Navien gas boilers is characterized by a long service life and economical gas consumption. All Navien gas devices comply with the standards and regulations of the Russian Federation and have the appropriate certificates.

Frost protection system stability

If the room temperature drops, the automatic protection system is activated

from freezing. When the temperature of the heating water drops by more than 10 degrees Celsius, the circulation pump automatically starts, resulting in constant circulation of the coolant in the heating system. If the temperature of the heating water drops to 6 degrees Celsius, the burner is automatically turned on and the coolant warms up to 21 degrees Celsius.

Safety of operation during frequent power surges

According to the instructions, the voltage can fluctuate within ±30 percent due to the triggering of the Switched - Mode Power Supply (SMPS) protective chip on the microprocessor. At the same time, the boiler operation does not stop

, which prolongs its service life and prevents breakdowns.

Operating conditions for heating and hot water:

• provided there is low inlet pressure in the gas pipeline system, stable and safe operation of the Navien Ace gas boiler is possible at a gas pressure of four mbar (40 millimeters of water column);
• subject to low incoming water pressure in the water supply system - stable operation of the Navien Ace gas boiler is possible provided that the incoming water pressure drops to 0.3 bar, which allows this gas device to be used in homes
  where there is low water pressure in the water supply system, including where there are frequent pressure drops in the water supply system.

Rational design

Navien gas boilers are small in size and light in weight, they are convenient to transport, they are easy to install and there is the possibility of rational use of room space. For ease of installation, the connecting tubes are located on both sides of the device, which greatly simplifies the piping and installation of the Navien Ace gas boiler.

Fuel preheating (KR series)

significantly impairs the flammability of diesel fuel

Navien gas devices operate on any Russian-made diesel fuel

However, the cost of winter or arctic diesel fuel is much higher than that of summer diesel fuel, and the use of summer fuel is impossible at low temperatures without preheating it.

The heating element, which is built into the burner of the Navien gas unit, preheats it before supplying fuel to the nozzle, resulting in high-quality fuel atomization and uninterrupted ignition. Due to preheating in Navien Ace gas boilers, it is possible to use inexpensive summer diesel fuel

, which leads to significant savings.

Design

1. The heat exchanger is made of stainless steel

Stainless steel is used to produce the heat exchanger, so it is not subject to corrosion

, which significantly extends the life of the Navien Ace boiler.

2.

Thanks to a modern, efficient diesel burner, low-noise, stable operation with minimal fuel consumption is ensured. According to the instructions , the burner can work with any diesel fuel

, taking into account all types of fuel produced in the Russian Federation.

3. Fuel filter with replaceable cartridges

The fuel supply system is equipped with a filter to remove unwanted impurities, as a result of which the stable operation of the Navien Ace gas boiler is disrupted. The Navien device comes with additional replacement cartridges.

4. Russified control panel

Using a fully Russified remote control panel equipped with a liquid crystal digital display, it is possible to save fuel consumption and reduce heating costs

, as well as constant maintenance of a comfortable room temperature thanks to the room temperature sensor built into the control panel.

Gas boiler Navien Korean model, adapted to Russian operating conditions

The South Korean corporation Kyung Dong Navien Co has been present on the Russian market for a long time. Its main products are gas boilers under the same name. The company has long and firmly held its niche, because the Navien gas boiler is adapted to Russian operating conditions, it has a reasonable price, plus good technical characteristics. What the corporation offers today:

• Heating units for wall and floor design.
• Single-circuit and double-circuit models.
• With open and closed combustion chambers.
• Quite a wide selection of power positions.

If we consider Navien gas boilers in terms of the right choice, then it is necessary to divide them based on power, and accordingly, according to the size of the heated building. And the lower the performance of the gas unit, the smaller the area it heats. Hence the main division into wall and floor structures.

Model Navien Ace

Wall models

They became the main position that has taken root well in Russia. Entering the domestic market, Korean engineers encountered specific problems that made it impossible to operate Navien wall-mounted gas boilers. And this:

• Low pressure in gas pipelines, especially in pipelines built on the principle of cooperation. Such systems are found mainly in suburban villages, where heating boilers are in great demand.
• Unstable pressure in the water supply system.
• Changes in the power supply system occur all the time.
• A small number of technically trained workers to whom maintenance and repair services could be delegated.

Therefore, the Koreans decided to first enter the Russian market with a Navien Ace gas boiler leveled for Russian operating conditions. By the way, this model is still one of the most popular and in demand.

Turbocharging diagram

Boiler Navien Ace

What are the advantages of this model, why is it still so popular?

• Firstly, the manufacturer installed a unique unit in the design of the unit, which monitors the voltage in the AC network. Without the help of a stabilizer, this unit can easily withstand a voltage drop of up to 30%. It can operate at a standard voltage of 220 volts, and at 155 V, and at 280 V. By the way, such jumps will disable any other model.
• Secondly, there is a certain minimum pressure in the gas line, which is considered critical. Below it, the heating boilers no longer work. So for many this figure is 13 millibars, and for a Navien gas boiler this figure is 4 millibars. Imagine what a big difference it is. Many boilers are already refusing to work, and the “Korean” doesn’t care about even lower pressure.
• Thirdly, low water pressure in the heating system. In this model the limit is 0.1 bar. Accordingly, boilers of this brand can be used both in private housing construction and in city apartments.
• Fourthly, this model has one very important function, which is responsible for freezing the coolant. If the coolant temperature drops below +5°C, the circulation pump, which is located inside the body of the heater, begins to operate in constant mode. It circulates water through the heating system, preventing it from freezing. This is a very interesting solution to this problem.

If we consider this model from a purely technical point of view, it should be noted that the design of the Navien gas boiler is quite complex. The figure below shows what components and parts it consists of.

Boiler structure

Essentially, this is a miniature boiler room with everything: a circulation pump, an expansion tank, an automation unit and all kinds of shut-off valves. By the way, experts complain about the inadequate operation of the automatic system. Unfortunately, this is one of the weak points of the heating unit, to which you can also add poor performance of the temperature controller. It often jams, so in the latest models the wheel was replaced with a button panel.

The power of this type of boiler varies in the range of 7-40 kW. But there is a peculiar division here that defines a specific model. For example, a gas boiler Navien Ace 16k, whose power varies from 9 to 16 kW, or Navien Ace 40k with a power from 14 to 40 kW. But what’s surprising is that all the main technical characteristics of wall-mounted Navien gas boilers are almost the same, except, of course, for fuel consumption and the area of ​​the heated building.

Let's list some common technical specifications.

Consumer characteristics

Modern high-tech equipment will relieve the user of many problems overnight

It is especially important that boilers can operate even with low-quality electrical energy. They do not respond to voltage fluctuations, even if it changes by 30%

This is very important for all consumers in the post-Soviet space. After all, in domestic networks it is not so rare that various interferences arise.

This is not the only reason why the product works flawlessly. The high quality of all components and professional assembly of systems determine the reliability of the equipment. It can fail only if the pressure in the system decreases. But this is more of a plus than a minus - if there is a liquid leak, the boiler will stop working, which will protect you from more serious problems.

The minimum possible pressure of the secondary circuit (0.1 bar) allows you to obtain hot water for household needs almost uninterruptedly.

Two heat exchangers

The main feature inherent in all Navien gas boilers without exception is the presence of two heat exchangers. This makes it possible to more efficiently use the heat produced during combustion of the energy carrier. The devices are resistant to corrosion. Their metal components are made of stainless steel, which guarantees a long service life.

It is also very important for consumers that the Navien gas boiler is relatively inexpensive. So it is available to almost all categories of the country’s population

Both heat exchange circuits in heating devices are resistant to various types of contamination. They do not collect small particles and resist scale formation well. This ensures consistently high performance. The units are accessible and easy to maintain.

Turbocharging system

Turbocharger fan installed in NAVIEN Ace TURBO boilers

Each product from Korean manufacturers is equipped with a device that provides air under pressure. Due to this, the gas combustion coefficient is very high, which has a beneficial effect on the efficiency indicator. Air supply control is performed by automatic systems equipped with APS pressure sensors.

It is very important to note that turbocharging significantly increases the performance of the equipment. In terms of heat transfer, such installations are comparable to gas boilers equipped with copper heat exchangers

At the same time, the strength of convection units remains consistently high, and the cost is significantly lower.

Balancing the working mixture

The company's engineering staff pays a lot of attention to the design of its models. Production processes are no less carefully controlled. The tandem of these two components explains why Navien gas boilers are of such high quality.

Careful elaboration of even small nuances made it possible to achieve the supply of a perfectly balanced working mixture to the combustion chamber. As a result, the amount of heat produced increased significantly.

Boilers of the South Korean brand have undeniable advantages:

• High power of fans installed in the equipment.
• Optimal ratio of atmospheric air and natural gas.
• Reduced emissions of harmful substances due to almost complete combustion of the working mixture.
• Insignificant levels of residual oxygen.

All of these advantages make it possible to obtain the required amount of heat at relatively low energy costs.

Boiler technical characteristics

Let's look at the parameters of the Navien Ace 24 K boiler:

Advantages and disadvantages of Navien Deluxe

Boilers have been sold on the world market for more than 30 years. They have gained popularity due to their reliability and functionality. The high level of safety of gas equipment is ensured by several protection systems:

1. From freezing of the heating system, during prolonged shutdown of equipment in the cold season.
2. From destructive operating modes of the electrical network, during power surges.
3. From low operating conditions of the gas network.
4. From emergency operating conditions of the water supply system, when the coolant pressure decreases to 0.1 bar.

The safety group of the Navien boiler contains primary sensors for temperature and pressure, a control pressure gauge and a safety relief valve against excess pressure in the heating circuit. To protect the internal surfaces of water heating from scale, a filter is installed to purify water from hardness salts.

An SMPS chip is built into the electronic board of the boiler control system, which protects the boiler equipment from fluctuations in the network +/- 30% of the normal voltage of 220V.

Advantages and disadvantages

The Navien Deluxe boiler has the following advantages:

1. Automated operation of the system. By installing a separate thermostat and a built-in microprocessor, the device will independently regulate the temperature in the heated room when it is significantly reduced.
2. Regulation of gas and air supply. A modulating burner is a mandatory part of all heating elements from the company. It significantly reduces heating costs and increases efficiency.
3. High level of efficiency. All gas boilers have high efficiency. However, the use of new technologies in the production of Navien Deluxe boilers made it possible to achieve truly high efficiency.
4. By using a cheaper stainless steel heat exchanger, the cost of the boiler itself is reduced. Moreover, the heating level remains approximately the same.
5. Durability of work. The device is protected both from voltage surges and from insufficient water pressure and will work under all these difficult conditions.

The disadvantages of the Navien Deluxe gas boiler include the demanding nature of the automation and possible malfunctions of both temperature and pressure sensors. However, they are rare.

Characteristics of the Navien Ace line of wall heating devices

A wall-mounted, double-circuit gas heating device from the manufacturer Navien, belonging to the Ace line, is represented by the following models: Navien Ace ATMO, Navien Ace TURBO. Moreover, the latest model is presented on the market in two modifications – Korea and Coaxial.

The Navien Ace wall-mounted boiler, regardless of modification, has a power from 13 kW to 40 kW, which allows the equipment of this manufacturer to be placed in rooms of various sizes.

Features and characteristics of Navien Ace TURBO

The Navien Ace gas wall-mounted boiler can be placed in rooms of any size.

The manufacturer claims that Navien Ace TURBO boilers are ideal for use in domestic conditions. They can operate at low gas pressure in the pipes, significant voltage surges, and retain their functionality even when they are left unplugged for a long time and the coolant in the heating system begins to cool.

In addition, wall-mounted dual-circuit heating elements, Navien Ace TURBO, have other characteristics:

1. this is a double-circuit unit, that is, it is suitable for heating a room and for preparing hot water for domestic purposes;
2. The double-circuit heating device has a steel heat exchanger with a protective anti-corrosion coating. Its cost is several times lower compared to copper analogues. And the insufficient boiler power due to the reduced thermal conductivity of steel is compensated by turbocharging of the gas burner. Today, Navien Ace TURBO can compete in power with devices that have a copper heat exchanger;
3. This gas wall heating element ensures that the coolant in the heating system does not freeze. So, when the water temperature in the heating system drops to +10°C, the boilers immediately turn on the circulation pump. By distilling water through the heating system, it prevents the formation of ice crystals. If the coolant temperature drops below +6°C, the gas burner is turned on. It heats the water in the heating system to +21°C;
4. Navien Ace TURBO gas heating units are characterized by economical energy consumption. This is due to the synchronous operation of the turbocharging system and the APS (Air Pressure System) air pressure sensor. The boilers use a pressure sensor to control the rotation speed of the fan under the burner, thereby mixing the gas in optimal proportions with air, which allows the energy carrier to be completely oxidized. Consequently, the efficiency of the equipment increases, but the gas consumption does not increase;
5. These boilers have a long service life, thanks to a reduction in the number of on/off cycles in the event of power surges and low water pressure in the system. Thus, double-circuit boilers will continue to operate if the voltage drops by 30% from 230 V. They will not turn off if the water pressure is 0.1 bar, which is important for houses with autonomous water supply.

Navien double-circuit boilers have two modifications. The Navien Ace TURBO Coaxial gas unit has a coaxial chimney. It is useful for those rooms in which it is difficult to ensure air flow for the boiler. That is, the coaxial chimney takes air for the combustion reaction from outside the building. Korea boilers take air from the room. They work silently.

Features and characteristics of Navien Ace ATMO

Navien Ace ATMO gas boilers operate even at low voltage.

The Navien company has developed double-circuit heating boilers that run on gas, but with an open combustion chamber, that is, without turbocharging. These are Navien Ace ATMO boilers. They feature the same functionality as turbocharged models. This is an adaptation to domestic operating conditions.

These heating boilers have the same chip, which ensures their constant operation at low voltage and system pressure. Gas equipment is equipped with a steel heat exchanger. A double-circuit boiler makes it possible to prepare hot water for domestic needs. However, the open combustion chamber ensures quiet operation, unlike turbocharged boilers.

Technical device and principle of operation of the Navien gas boiler

Let's consider the design of a double-circuit gas boiler Navien Deluxe Coaxial.

Construction of a Navien gas boiler

The device has two heat exchangers that prepare the coolant (primary) and domestic hot water (secondary). Gas supply lines and cold water are connected to the corresponding pipes, which enters the heat exchangers, where they are heated to certain temperatures. Then, using a circulation pump, the coolant is directed to the heating system of the house.

The entire operation of the device is controlled by an electronic unit that ensures timely switching off/on of the burner and controls the water temperature in both circuits using special sensors. The control board is protected from power surges, but in areas with frequent or significant voltage surges it is necessary to use a stabilizer.

Navien boilers have a remote control unit equipped with a display that shows the current mode, temperature, and other operational parameters of the device. In addition, the display shows an error code detected by the control unit in any system of the device.

How to connect and configure

Installing the boiler does not require any specific actions. Floor-standing devices are installed in a specific place, wall-mounted devices are hung on the wall using a standard hanging rail.

The boiler weighs about 40 kg, so the wall must be strong and made of reliable materials that can bear a heavy load.

The boiler is mounted using damper pads (rubber, foam rubber, etc.) so that noise during operation does not spread throughout the house. Gas and water pipes, the heating system and hot water supply of the house are connected to the corresponding pipes. An air supply and smoke removal system is also connected (depending on the type of construction).

The boiler is adjusted by bringing the gas pressure to the standard value. To do this, turn off the water supply and use the adjusting screw to adjust the minimum and maximum gas pressure corresponding to operation in different modes. After this, resume the water supply. During operation, it is necessary to periodically check the condition of the boiler connections using a soap solution - if they are not tight, bubbles will appear. If noise or other signs of an unplanned change in operating mode occur, turn off the gas supply and check the condition of the equipment.

Brief operating instructions: control and adjustment

All actions with the boiler are carried out using a remote control panel. The water temperature in the heating system is adjusted by pressing the “+” or “-” buttons on the remote control when the “heating” mode is selected, which is indicated by a stylized image of a battery. The display shows the numerical value of the set temperature. It is also possible to set the mode according to the air temperature in the rooms, for which you need to turn on the corresponding symbol on the display (symbol of a house with a thermometer inside). The flashing image shows the desired temperature value, and the constant image shows the actual temperature. Hot water is adjusted in a similar way, you just need to switch the mode.

How to install a wall-mounted boiler?

the system is a high-tech device

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

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

Usually all boilers are equipped with this configuration.

When installing heating systems with an open combustion chamber, you need to have a separate room. Its area should be 4 m2 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, you must have an outlet with an automatic emergency shutdown sensor

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 needs to be sheathed with protective material. After you have holes between the pipe and the wall, you need to seal them with cement mortar. Before connecting the thermoblock, check that there is no debris in the cracks.

Connecting a heating system is a complex process that must be performed by specialists. If you want to buy a Navien gas boiler, then everyone will be happy with its low cost, and they will also be pleasantly surprised by the free installation.

Brief information about the company Navien

The South Korean association Kyung Dong Navien has long been present in the heating and water heating equipment market.
The main products of the company are gas boilers. Did you know? Initially, Navien equipment ran exclusively on natural gas, but over time, models began to be developed that were adapted to run on liquefied gas.

The corporation firmly maintains its leadership in the market due to the fact that each Navien gas boiler is adapted to operate under various operating conditions (including in post-Soviet territory), it has an affordable price and good technical characteristics. Today the company offers:

• heating equipment for floor and wall mounting;
• models with open and closed combustion chamber;
• double-circuit and single-circuit boilers;
• wide range of power options.

In terms of the correct choice, Navien boilers should be divided according to power, and therefore according to the volume of the room.
From here comes the division into floor and wall models. Important!
The lower the boiler power, the smaller the heated area.

Characteristics of models

The “Coaxial 24K” version differs from the “Deluxe 24k” and “Deluxe Plus 24k” already because it is manufactured with the expectation of connecting to a horizontal coaxial chimney. Its diameter (according to the diagram of one pipe inside another) is 6 and 10 cm, respectively. “Deluxe 24 k” in regular and coaxial versions are equipped with a remote control unit, which also has thermostat functions.

The boiler version 13K is distinguished by an automated complex that protects against freezing. When the temperature drops to 9 degrees or below, the system starts the pump to provide circulation. The choice of the latest Smart Tok line is justified for those who wish to take advantage of the resources of modern remote control.

Burners in South Korean boilers are made with modulation, which allows:

• make the ignition of the fire silent;
• regulate the temperature smoothly;
• reduce the thermal load on the components located inside.

Voice prompts are provided in any Navien boiler model. Engineers were able to adapt their systems to operating conditions in real Russian networks. A self-diagnosis function is provided. Judging by the reviews, including those left by experts, heating devices from South Korea hardly break down and are highly efficient. At the same time, they last a long time.

“Atmo 24AN” is produced according to the classic convection design and is equipped with an open combustion chamber. Due to its power of 24 kW, it successfully warms a house up to 240 m2, burning a maximum of 2.47 m3 of gas per hour. The boiler is capable of heating 13.7 liters of water per minute. Copper is used to create the primary heat exchanger, and strong grades of steel are used for the secondary.

Controlling the unit becomes more convenient thanks to remote systems with built-in thermostats. The entire harness has already been created inside

If you pay attention to “Smart Tok”, it is not difficult to discover the exceptional perfection of this modification. It can be controlled via the Internet and recognize its own problems

There is a specialized programmer that sets operating modes; power adjustment allows you to receive from 8 to 24 kW of thermal energy per hour.

Milestones

The official founding date of KD Navien is 1978. At this time, the production of gas boilers was launched. It is part of Kyung Dong, which was formed in 1967. At that time, it specialized in the production of climate control and heat-saving equipment, and only with the inclusion of the Navien company in its composition did it begin to develop and produce heating devices.

Its production facilities are located in South Korea and Japan, and its products are sold in Southeast Asia and the USA.
Not long ago, the company’s boiler equipment appeared on the domestic market. Date: September 25, 2021