We study the Navien wall-mounted double-circuit gas boiler - design features, advantages and disadvantages. Wall-mounted gas heating boilers Navien Double-circuit gas boiler for heating navien

Navien gas boilers, according to reviews, do not cause problems to their owners during operation. They are made in Korea, but with a focus on our market. The range includes models with a hermetic and non-hermetic combustion chamber, as well as with a condensing heat exchanger. All of them are double-circuit, equipped with programmable microchips and multi-level protection.

Turbocharged boilers Navien Deluxe Coaxial

Deluxe and turbo models differ in the method of connecting the chimney.

The Navien deluxe gas boiler must be hung on the wall, it is double-circuit, the combustion chamber is sealed. This means that it can heat water in two directions at once: heating and hot water. The air for the fire is not supplied from the premises, but from the street through. A turbine is installed above the burner to take in air and exhaust gases. It is powered by the mains and without it the functioning of the boiler is impossible.

This heater is designed in such a way that it can work in our conditions. This applies to gas pressure, the quality of the coolant, and the harsh Russian winters. This unit has a useful feature that prevents the system from defrosting. This option in Navien gas boilers, according to reviews, saved more than one circuit. When the coolant temperature drops to 10 degrees, it automatically turns on. It drives the liquid along the circuit so that it does not freeze. If the temperature continues to fall and reaches 6 degrees, then the boiler turns on and heats the liquid to 21 degrees.

The burner is made of stainless steel. It can be set to turn on and off according to the desired room temperature. The heater easily tolerates:

• water pressure drop to 0.1 bar;
• gas pressure drop to 4 atmospheres;
• malfunctions of the Navien boiler associated with power surges are excluded.

The heaters of this line are produced with a capacity of 10, 13, 16, 20, 24, 30 kW. The power can be adjusted. The boiler heats water for heating in the range of 40-80 degrees, and for hot water 30-60 degrees. To remove the products of gas combustion, a 75/70, 60/100 or 80x80 chimney can be connected to the heater.

Turbocharged boilers Navien Ace Turbo Korea

The filling of the Ace Turbo Korea boiler is no different from the Deluxe Coaxial. That is, both units are dual-circuit, can operate under the same conditions, are equipped with identical systems for maintaining the temperature in the room and preventing defrosting of the circuit. The combustion chamber is also sealed and works in tandem with the fan. Malfunctions of the Navien gas boiler during power surges are excluded thanks to a special chip in the microprocessor.

The operation of a sealed combustion chamber is impossible without a turbine.

There are two modifications with a capacity of 35 and 40 kW. Naturally, such Navien boilers consume more gas according to the instructions. At the minimum power, the consumption is 1.48 m3/h of natural gas, at the maximum power - 4.4 m3/h. In addition, the heater can operate on liquefied gas, in which case the consumption is somewhat less. Main characteristics:

• Efficiency 91.5%;
• minimum power 14 kW;
• minimum water pressure in heating 0.6 atmospheres;
• the minimum pressure of the DHW system is 0.1 atmospheres;
• throughput 20.1 or 22.9 l/h depending on power.

For such units, only the FF 75/70 chimney is suitable - this is one of the main differences between this model and Deluxe Coaxial. Heater weight 30 kg. The cross section of the pipes for connecting to the heating system and the central gas pipeline is ¾ inch. ½ inch hot water connection. The installation of the equipment may only be carried out by a specialist with the appropriate level of authorization.

Condensing boilers Navien NCN

Condensing boilers are the most modern type of heaters for heating. The unit is always assembled from the latest components, so its price is not small. The peculiarity of this heater is its high efficiency, which reaches 98%.

The boiler comes with a remote control.

Closed combustion chamber. Due to the special design of the heat exchanger, the unit is able to heat the coolant or water for hot water supply not only with a flame, but also with smoke formed as a result of combustion. The combustion products are not immediately taken out into the street, but pass through a special channel, where they have time to cool down. At the outlet of the heater, the temperature of the gases is low, so even plastic chimneys can be used. By the way, the technical characteristics of the Navien gas boiler allow the use of coaxial chimneys 60/100 and 80/125, as well as separate chimneys 80x80.

Useful options:

• frost protection;
• auto diagnostics;
• programmable microprocessor;
• remote control with LCD display.

As the smoke cools, condensation occurs. It is collected in the boiler and when its volume becomes critical (about 250 ml), the condensate is simply thrown out through a special pipe. A sewer pipe must be connected to this pipe.

From the remote control, you can send commands to the boiler in manual mode, or you can program it to maintain the temperature in the room. In this case, the remote control performs the function of a remote temperature sensor. The condensing heating boiler Navien is available with a capacity of 25, 32 and 40 kW. The package includes a circulation pump and 6.5 liters. All modifications run on natural and liquefied gas. The minimum power for heating is 4.9 and 7 kW, for hot water supply - 4.8 and 6.8 kW. The operation of the heater is possible only if the pressure in the DHW system is at least 3 atmospheres.

Atmospheric boilers Navien Ace Atmo

The peculiarity of this line lies in the open type combustion chamber, into which air enters directly from the room where the unit is installed. All models are double-circuit, power 13, 16, 20, 24 kW. A processor is installed in the boiler, which prevents the system from defrosting, protects against power surges and pressure drops in the heating, hot water and gasification system.

Gas boiler Navien 24 kW specifications:

• Efficiency 86%;
• minimum power for heating 9 kW;
• minimum water pressure 0.1 bar;
• minimum DHW pressure 0.6 atm.

For such boilers, a chimney with a cross section of 130 mm is required. The diameter of the pipes for heating is ¾ inch, and for hot water and gas ½ inch. The unit runs on natural and liquefied gas. This is a volatile device that consumes 110 W / h.

Offered by our stores today is very wide. Choosing the most suitable model in terms of reliability and quality at the lowest price is a very difficult task. Among the manufacturers of such equipment, the South Korean company Navien is not the last. To give the potential buyer the necessary information about what the Navien gas boiler is, and is the purpose of this article.

What is the principle of operation of Navien boilers

The operation of Navien boilers is based on the same principles as those of similar devices from other manufacturers.

Composition and types of boilers

The structure of each such device includes the following main components:

• gas stove;
• gas supply control mechanism;
• heat exchange device.

In the modification, hot water immediately enters the heating system of the house. models incorporate an additional water heating circuit for the hot water supply system at home (DHW). When this circuit is activated, the heating system is suspended.

Exhaust gas removal

Gas combustion chambers in boilers are open (atmospheric) and closed (). In atmospheric models, smoke leaves the room on its own through the chimney. For turbines, exhaust gases are removed by means of a fan forcibly through a pipe through the outer wall of the house.

Important! In rooms where a gas boiler is installed, permanent exhaust ventilation is required. This is especially important for atmospheric models.

Gas-burners

One of the main components of a gas boiler is, of course, a gas burner. As a rule, modern models are equipped with modulating burners. They allow you to modulate the flame, controlling the gas supply, depending on the need to adjust the temperature of the air in the premises or the water in the DHW system. When equipping the device with an automatically controlled modulating burner, the heating system will accurately maintain the set temperature.

Control and protection systems

When there is a power outage, the gas boiler stops working, when electricity appears, it starts automatically.

In the event of a gas supply interruption, the automation will close the solenoid valve, which will block the possibility of fuel entering the device. In such situations, it is only possible to open the gas supply to the boiler manually.

Modern models have the ability to save energy and protect against freezing. The water temperature is controlled by sensors that automatically turn on the heating of the coolant when its temperature drops to the set value.

Most gas devices, including the Navien wall-mounted gas boiler, include self-diagnosis systems. These systems monitor the operation of all nodes and display on the scoreboard, with the help of codes, information about the problems that have arisen.

Specifications from the technical side

In our market, Navien offers double-circuit wall-mounted gas boilers with the following characteristics:

1. Combustion chambers of any type - both open and closed.
2. The power range of the manufactured devices allows you to heat rooms ranging from 30 to 400 square meters. m.
3. Double-circuit modification makes it possible to heat water for the DHW system.
4. Heat exchangers are made of stainless steel.
5. Both liquefied and natural gas can be used to operate boilers.
6. The amount of water produced for the DHW system is determined by the capacity of the device. For example, a 13 kW device produces water in a volume of up to 11 liters per minute, and with a power of 30 kW - about 17.
7. The electronic control unit has the function of protecting the device from power surges.
8. Most models of heating boilers are equipped with a remote control unit with the following features:
   • the unit displays data on the set values ​​of the temperature of heating water, hot water in the DHW system and indoor air;
   • the display shows information about the problems that have arisen in the operation of the nodes;
   • the buttons on the block turn the boiler on and off, set the temperature mode;
   • the built-in air temperature sensor provides information for regulating the gas burner.

Each Nevien gas boiler is supplied with an instruction manual that describes in detail the rules for working with the control unit. There are also more detailed technical characteristics of the device.

Mounting Features

Before buying a gas boiler, you must:

1. Prepare a place for installation. Atmospheric apparatus requires a separate room, at least 2x2 m in size, with exhaust ventilation.
2. The device must be powered by a stabilizer connected to a circuit breaker or a socket that has an emergency shutdown capability.
3. The boiler body must be grounded, so you need to bring a ground wire to the installation site.
4. The wall where the device will hang, if it is flammable, must be sheathed with non-combustible material.

After purchasing the boiler, it is not an easy task to connect it. The factory instruction manual recommends that a specialist from an authorized service center be involved for this.

But if you have the skills to work with pipes and taps, you can try to hang it on the wall and connect the device yourself. The factory manual says it all in detail.

But do not forget that in any case, you will need to call a gas service specialist to conclude a service contract and obtain a special permit for the operation of gas equipment.

Important! Unauthorized connection of gas to the boiler threatens with penalties and even criminal liability.

Advantages and disadvantages of Navien boilers

A careful study of the models of different companies allows us to conclude that the Navien gas boiler has many advantages over competitors' products. Namely:

• good quality at a relatively low price;
• a large number of service centers for their maintenance;
• strict quality control mechanisms are in place at the company's enterprises;
• heat exchangers are made of high quality stainless steel, which ensures their long service life;
• the presence of an air temperature sensor built into the remote control unit;
• protection against power surges;
• a very large selection of models;
• cheap spare parts.

Disadvantages are much less:

1. noises and thuds at work;
2. Only branded spare parts are suitable for replacing failed parts.

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. So 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. 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 heating equipment of the Korean manufacturer Navien is represented by double-circuit boilers, including condensing ones. Its design advantages include the presence of two heat exchangers made of high-quality stainless steel, a remote control unit and the possibility of modulating the burner power. The entire range is certified, a protective chip against voltage surges is mandatory, it is allowed to start at low pressure in the supply gas and water supply.

The hallmark of Navien gas boilers is the anti-freeze function, the heating system effectively responds to sudden changes in ambient temperature. The feedback from the owners is mostly positive, the shortcomings include noise (only for models with a Coaxial chimney) and low maintainability (in case of malfunctions, only spare parts from the manufacturer are suitable). In general, this is an affordable technique, you can buy it without any problems in any store, the minimum warranty period is 2 years.

Brief description

1. Navien Smart 30K.

Lightweight wall-mounted gas boiler with a hot water circuit for servicing an area up to 300 m2, runs on natural and liquefied fuels. It is characterized by high performance: when heated to 25 ° C - up to 17.2 l / min, up to 40 - 10.8, this is enough to meet the needs of an average family. The model is designed to operate at power surges and pressure drops in the gas main, including the operation of the water heating circuit. If desired, the heating mode is selected according to the temperature of the incoming or return coolant, a three-stage power adjustment, this made it possible to reduce fuel consumption in comparison with analogues (the range declared by Navien is from 1.27 to 3.23 m3 / h, the owners' reviews confirm it). The turbocharging system is Coaxial modulated, the efficiency of the boiler reaches 90.9%. The control is fully automated, the outside temperature data is taken into account, the parameters are changed remotely using a smartphone or a remote control.

2. Navien Deluxe 10K.

Double-circuit boiler with wall placement with frost protection and a Coaxial turbo fan under the firebox. This model is characterized by high efficiency (up to 91.2%), average DHW capacity - no more than 11.5 l / min, and economical gas consumption - natural from 0.75 to 1.16 m3 / h, liquefied - 0.63- 0.97 kg/hour. The control system is automated, the control panel is fully Russified. The entire Navien Deluxe series is adapted to work in conditions of frequent power supply voltage fluctuations (a chip with a response threshold of ±30% of 230 V is installed). Both circuits are active even at low pressure in the incoming water pipe (up to 0.1 bar). The presence of a turbocharged fan allows you to optimize the "fuel-air" ratio and reduce heat losses from the outgoing combustion products.

3. Navien Ace 24.

Sales leader Navien, according to reviews, this boiler from Korea is trouble-free even with unstable parameters of gas and water in the supply lines, often observed in our realities (for example, apartment buildings). An anti-freeze system is provided: when the gas boiler is turned off, the pump circulates the coolant, and when the temperature drops to -6 ° C, the burner automatically starts. The installed air pressure sensor allows you to optimize fuel consumption: it takes no more than 2.47 m3/hour to heat a room up to 240 m2 and meet the needs of hot water supply. The Coaxial chimney is not included in the standard kit (there are exceptions, but according to reviews, this should be clarified), to organize the forced removal of combustion products, it must be purchased separately.

4. Navien GA 17KN.

Floor double-circuit gas copper. Optimum in conditions of low gas pressure and water pressure, the performance when heated to 25 ° C reaches 9.8 l / min. The efficiency of this is 91%, due to the rational arrangement of steel heat exchangers, the fuel consumption is minimal - no more than 1.67 m3 / h with a thermal power of up to 1.7 kW. By analogy with the above-mentioned Navien gas heating boilers, this model provides reliable protection against freezing (it reacts to a sharp change in the temperature of the heated space) and voltage surges. A feature of Navien GA 17KN is a universal smoke exhaust system - the hole can be installed in the outer wall, it is not necessary to lead the pipe vertically. The remote control panel is Russified, it is possible to control the parameters of water heating.

5. Navien NCN 21KN.

A wall-mounted condensing gas boiler, due to the use of the heat of the outgoing combustion products, the efficiency of the device reaches 98-108%. This is an environmentally friendly heating technology, flue gases contain a minimum of hazardous substances compared to conventional two-circuit models with the same performance. The generated volume and speed of hot water supply is above average: 14 l / min when water is heated to 25 ° C, 8 - to 40. At the same time, Navien condensing boilers are not inferior in terms of safety to other varieties: there is a system of protection against freezing, power surges. Successful operation is allowed at low pressure of the energy and heat carrier in the supply lines.

Another feature of this Navien model is the ability to control power over a wide range: from 4.8 to 19.3 for the heating circuit, which leads to savings in gas consumption. For comparison: in the minimum mode, the gas boiler consumes 0.52 m3 / h, in the maximum mode - up to 2.09, while a rather significant heating area is covered - up to 190 m2. Savings are 30% or more, this is achieved both by modulating the heat output of the burner (from 20 to 100%), and thanks to climate control, which monitors temperature changes not only in the room, but also outside it. User reviews confirm the payback of this unit, maximum efficiency is observed when it is installed in low-temperature heating systems.

6.Navien Prime 13K.

Wall-mounted gas boiler with a remote return line sensor that monitors changes in weather conditions. The presence of a climate control system allows you to reduce fuel consumption and save heat exchanger resources. This characteristic for natural gas lies in the range of 0.75-1.4 m3 / h, liquefied - 0.63-1.16, the delivery of hot water reaches 13.8 l / min. The kit includes a remote control with a voice assistant, control is available to people with visual problems. The series is protected from voltage surges and is suitable for operation in domestic conditions.

Buyer opinions

“I chose the gas Navien Deluxe 24K as the main heating device for the cottage due to the impossibility of allocating a separate room for the boiler room, the wall model just fit. During the operation did not reveal any particular shortcomings or malfunctions. The disadvantages include dependence on the mains and specific noise - the greater the power, the stronger the rumble of the boiler.

Egor, Yekaterinburg.

“I decided to buy Navien Ace to replace a failed gas boiler, after wintering I noticed a slight decrease in gas consumption, convenient and accurate automation. During the year of operation, he stopped for no particular reason twice, after which he restarted manually, and did not understand what it was connected with. The chimney is noisy, but you can’t hear it behind the closed door, I didn’t find any obvious minuses or shortcomings. ”

Sergey Trofimov, Moscow region.

“I consider Navien boilers a good investment, this equipment from Korea is better suited for our conditions than European models, and it consumes gas more economically than Russian ones. Of course, they are dependent on electricity, but the same can be said about any heating circuit with a circulating pump, and the fans consume little. Noise is called a generally recognized disadvantage, but they are located in a convenient place for the owner, the main thing is that the lighting is normal.

Dmitry, Novosibirsk.

“I installed the Prime 13K boiler from Navien at home, there are enough resources for efficient heating of all rooms and hot water for a family of three. I liked that the thermostat was included in the basic kit, I did not have to buy it separately. Malfunction signals are displayed, the control system is Russified, there are no problems with starting and maintenance.”

Denis, Moscow.

“I have been using a condensing double-circuit gas boiler of the Navien brand for heating and hot water needs for more than a year, during the operation I did not reveal any malfunctions. The cost of the model is one and a half to two times higher than the usual wall counterparts from Korea, but it is worth buying if you need a significant consumption of hot water. I advise you to connect the boiler through a stabilizer, in my area, for example, power surges exceed the 30% specified in the instructions.

Andrey, Rostov-on-Don.

Price

* the weight of the boilers is indicated without water.