We choose double-circuit gas boilers Navien. Korean gas boilers Navien Heating boilers for a private house Navien

Navien is a large South Korean corporation that produces versatile, high-quality and reliable gas boilers. Navien devices are distinguished by their trouble-free operation, practicality and functionality. These devices have an open or closed combustion chamber, their functional part is durable. At the same time, their cost is lower when compared with European counterparts.

Navien presents a versatile water heating system

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

Frost protection system stability

If the room temperature drops, then automatic protection system is triggered from freezing. When the temperature of the heating water falls below 10 degrees Celsius, it will start automatically circulation pump, resulting in a constant circulation of the coolant in heating system. If the temperature of the heating water drops to 6 degrees Celsius, the burner automatically turns on and the coolant warms up to 21 degrees Celsius.

Operational safety with frequent voltage drops in the network

According to the instructions, the voltage can fluctuate within ± 30 percent, due to the operation of the Switched - Mode Power Supply (SMPS) protection chip on the microprocessor. Wherein boiler operation does not stop which prolongs its service life and prevents breakdowns.

Operating conditions for heating and hot water:

• under the condition of low inlet pressure in the gas pipeline system - stable and safe operation gas boiler Navien Ace 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 a value of 0.3 bar, which allows the use of this gas device in homes, where there is a weak pressure of water 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 space. For ease of installation, the connecting pipes 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)

At low temperatures, the viscosity of the fuel increases, resulting in the effect of waxing, which significantly impairs the flammability of diesel fuel and the operation of the Navien gas boiler becomes unstable. This feature of operation is relevant for regions with a harsh climate, therefore, arctic and winter diesel fuel has been created for these conditions.

Gas devices Navien work on any diesel fuel Russian production However, the cost of winter or arctic diesel fuel is much higher than summer 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, before supplying fuel to the nozzle, preheats it, resulting in high-quality fuel atomization and uninterrupted ignitability. Due to preheating, Navien Ace gas boilers have the possibility of using inexpensive summer diesel fuel which results in significant savings.

Design

1. The heat exchanger is made of stainless steel

Stainless steel is used for the production of the heat exchanger, thanks to which it does not corrode, which significantly extends the life of the Navien Ace boiler.

2. Modern diesel burner

Due to the modern efficient diesel burner, low noise stable operation is ensured with minimal cost fuel. According to the instructions the burner can work with any diesel fuel, taking into account all types of fuel production 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. Additional replacement cartridges are included with the Navien device.

4. Russified control panel

With the help of a fully Russified remote control panel equipped with a liquid crystal digital display, a Possibility of economical fuel consumption and reduction of heating costs, as well as constantly maintaining a comfortable temperature in the room thanks to the sensor room temperature built into the control panel.

Safety

Safety instructions are given in each user manual for the Navien boiler, which contains all the important information for the safe use of the device. Failure to follow any of the instructions may result in death, serious injury, or damage to the product being used.

The following abbreviations and signs may appear on the Navien Ace boiler or in the instructions:

• RH - heating water;
• DHW - hot water supply;
• HVS - cold water supply;
• a triangle with an exclamation mark inside - a threat to life if safety rules are not followed;
• circle crossed out - prohibited actions;
• a circle with an exclamation mark inside - mandatory actions.

Navien gas boiler is great alternative to expensive alternatives European production, not inferior to them in quality and durability. The main advantage over other European devices is the availability of warranty service.

It is well known that South Korea is a country high technology, which supplies the widest range of modern household appliances around the world, including to the states 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. In Russia and the CIS countries are delivered only double-circuit boilers Navien in both wall and floor versions. In addition, all Navien units are equipped with modulating burners, built-in expansion tank and a 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. Main specifications 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

Navien range of wall-mounted boilers with closed camera combustion 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.

Prime series, same as brand boiler Deluxe Coaxial, is equipped with a closed combustion chamber and other functional elements that are listed above. The difference is in the additional weather-compensated automation module that controls heating depending on the conditions. environment. 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.

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 look 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 is 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.

Finding a suitable gas boiler today is very difficult - as always, the main problem lies in huge selection. Even the products of one manufacturer can impress with an extensive range of models, not to mention several dozen brands on the heating market.

The Korean-made Navien gas boiler simplifies this task - each line contains Navien's own developments of engineers, optimized in terms of power, energy consumption and ease of operation. Why, among all the variety, buyers prefer this particular heating technique - in our article.

What distinguishes Navien equipment from analogues

The Korean company is one of the few in the world that prefers to use its own developments in production heating equipment. OEM products are not produced here - modified early samples to increase sales. Each piece of equipment is worked out to the nuances, which allows you to create equipment that is ideal for autonomous heating private houses, apartments and industrial enterprises.

Wall mounted gas boilers Navien

Among the key advantages over the products of other brands are:

• intelligent remote control via iOS or Android systems - the SMART-TOK line of boilers;
• modulated gas burners responsible for the silent operation of the unit, a gradual change in temperature in a mode that is comfortable for a person and the absence of thermal effects on the internal structure;
• modulated by a turbocharging system with a large operating range of regulation;
• voice prompts for easy control and configuration of Navien gas boilers;
• full compliance with Russian operating conditions - low gas pressure, voltage drops in the network, lack of constant pressure in pipes, etc.

In other words, the Korean manufacturer took into account all the potential risks and offered a completely new vision for gas equipment. It has become not only convenient, but also completely safe.

studying real reviews for Navien gas boilers, it becomes clear that buyers have already evaluated the stability of burners, the quality and insulation of heat exchangers, and a very long period of trouble-free operation. Even according to the estimates of service center specialists, breakdowns of Navien equipment are treated in only 2% of cases, and in most cases this is due to an installation error or incorrect reading of the instructions.

VIDEO: Gas double-circuit boiler NAVIEN 24: review and reviews

The lineup

There is a whole gradation of heating equipment, formed according to individual characteristics.

By functionality

• turbocharged with a unique combustion chamber and a coaxial chimney system;
• atmospheric - with an open combustion chamber, where flue gases are vented to the outside according to the principle of natural draft;
• condensing - direct the heat released during the condensation of water vapor to the coolant, which saves fuel consumption by 20%.

By the number of circuits

• single-circuit - designed only for space heating;
• double-circuit - for heating and providing hot water.

By way of placement

• wall-mounted - mounted on the wall, compact dimensions, do not require a separate or closed room;
• floor - more bulky equipment, which is recommended to be installed in a separate room.

The maximum range is presented in the line of wall-mounted boilers - according to statistics, it is this product that is most in demand among consumers.

Popular Attachment Models

Wall mounted gas boiler Navien ATMO 24AN

Deluxe ACE (ATMO) - 24 kW, open combustion chamber

Convection double-circuit gas boiler Navien ATMO 24AN with an open combustion chamber. The power of the equipment is 24 kW, which is designed for heating 200-220 sq.m. Maximum fuel consumption 2.47 m3/h. The volume of hot water - 13.4 l / min. There are two heat exchangers:

• copper;
• from heat resistant steel.

Only one burner is included in the kit, if necessary, they purchase a replaceable one and switch the boiler to bottled (liquefied) gas.

The complex includes:

• expansion tank;
• remote controller remote control with 2 thermostats.

Price 25599 rubles. In remote regions reaches 27,000 rubles.

Wall mounted gas boiler Navien DELUXE 24K

Deluxe 24K White (Korea Type)

Convection attachments with a closed combustion chamber. At the same price as the previous model, it has a big drawback - there is only one heat exchanger and it is made of heat-resistant steel. This reduces the overall power of the equipment and makes it less resistant to operating conditions. In general, the characteristics are standard - power 24 kW, designed for a room with an area of ​​​​200-220 sq.m. Productivity of hot water supply - 13,7 l/hour.

When choosing boilers, managers are advised to adhere to the formula of 1 kW of power for every 10 square meters premises. But these are ideal operating conditions, when the house is qualitatively insulated (walls, floor and ceiling), insulated metal doors, metal-plastic windows, bimetallic radiators. We advise you to take 1 kW of power for 7-8 sq.m.

The kit includes:

• circulation pump 12 volts;
• expansion tank;
• remote control with 2 thermostats;
• room thermostat.

Bonus: electronic control of equipment operation with self-diagnosis function.

The cost is 24999-27999 rubles.

Navien Smart Current 24K

Among all coaxial hinged boilers, this one is the best. The "stuffing" includes:

• closed combustion chamber with copper heat exchanger;
• modulated gas-burner, for operation with liquefied gas, it is easy to switch;
• electronic control system with self-diagnosis of malfunctions - the error code is displayed on a plateau;
• remote control;
• program for selecting the operating mode and power of the unit;
• built-in piping with expansion tank and circulation pump;
• outdoor and room temperature sensors to stabilize operation;
• intelligent remote control via iOS or Android systems.

If necessary, you can control by voice. The operating time is limited by a timer.

Power is regulated in 3 modes - 8-24 kW, which makes it possible to reduce gas consumption. Designed for an area of ​​up to 220 sq.m. The hot water supply capacity is 13.9 liters per hour, the maximum fuel consumption is 2.8 m3/h.

Bonus: Even with low gas pressure, the room will have a stable temperature and hot water supply. The manufacturer guarantees uninterrupted operation of heating and hot water even when the voltage in the network changes.

Cost - 45500 rubles.

VIDEO: A simple solution to the main problem of wall-mounted gas boilers

Studying the reviews of owners and specialists, it is clear that in general this is a fairly reliable equipment that rarely fails. But problems arise here too, and often this is due precisely to errors or peculiarities of operation.

In some cases, you must immediately contact service center, especially since the gas double-circuit wall-mounted boiler Navien is being repaired under warranty only if there was no third-party intervention.

Error code 01

This error means pressure drop. The reasons may be the failure of the circulation pump or the formation of a plug (clogging).

What to check:

• a filter so that there are no air pockets - you can bleed on radiators;
• operation of the circulation pump;
• coil resistance;
• operation and no damage to the pump impeller.

After graduation warranty period All faults must be checked and repaired by a qualified technician. The gas boiler does not allow amateurism, so it's not worth the risk.

Error code 02

It means the appearance of air locks in the system, a decrease in water pressure, damage to the pump impeller. In addition to the error code that is displayed on the display or plateau, the indicators are:

• lack of hot water from the tap - at first it can go warm, then generally cold, since the flow force is not enough for the burner to work;
• cold water at the maximum temperature on the remote control;
• no hot water, but the heating works properly.

What do we have to do:

1. Bleed air pockets.
2. Check coil resistance.
3. Check the impeller for mechanical damage.
4. Check the operation of the flow sensor.
5. Disassemble the flow sensor if it is defective and clean the flag. It is he who is responsible for coordinating the flow pressure.

Error code 10

The reasons may be:

• fan malfunction;
• installation errors in which the air pressure sensor is incorrectly connected;
• chimney blockage;
• a sharp strong wind blowing out the burner.

What to do:

1. If the fan is damaged, replace it.
2. Clean the chimney with chemicals.
3. Check that the sensors are connected correctly.

The appearance of noise in the boiler

It is very rare, but it occurs when the Navien wall-mounted gas boiler starts to make a distinct noise when hot water is supplied, but does not give an error. The reasons may be a poor-quality coolant or an increase in water pressure. As a rule, we are talking about clogging of the heat exchanger, so it must be removed and thoroughly cleaned.

When operating equipment for more than 5 years, it is almost impossible to clean the heat exchanger, so it is better to buy a new one and install it.

Error code 011

This problem is typical for gas boilers with a storage tank and shows that the heat exchanger is clogged with low-quality coolant. In most cases, such an error appears on original equipment that is not adapted to our conditions. You can order an adapted gas boiler from authorized dealers, which no longer reacts to water quality.

Not a single error can be called critical for the operation of the equipment, especially since the owner of any boiler, not only the Korean Navien, may encounter this. Another thing is that the latter rarely fails, which is what Russian users appreciate.

VIDEO: Commissioning of the NAVIEN gas boiler

What could be nicer than the hugs of a loved one? Once in them, we leave all worries and problems behind. The peace and warmth that they radiate calms and gives strength to fight on. All this is impossible without home comfort, where the whole family realizes its importance and members can express their gratitude to each other. Especially in winter, I want to come to a warm home. But this is not possible without a heating system. The latter should be not only reliable, but also cheap to maintain. Also, the price of the main modules should not skyrocket.

The central component for heating systems is a gas boiler. You can find hundreds or even thousands of offers in conventional or online stores. Models of domestic and foreign production are presented. Due to the increase in prices, the latter is becoming increasingly difficult to buy. But there is an option that is ideal in almost all criteria - this is a double-circuit gas boiler "Navien". He will become a hard worker and a reliable assistant.

Advantages and disadvantages

A balanced assessment of any case is very much appreciated. It allows you to achieve the desired result and incur the minimum amount of costs. This approach is also relevant when choosing Navien double-circuit gas boilers. This brand positions its gas boilers as excellent value for money. The strengths include the following:

The disadvantages of such gas boilers are much smaller and for many they will be insignificant:

• the price is higher than that of domestic counterparts;
• imported spare parts;
• the need for regular maintenance.

In most situations, it is better to overpay than to subsequently suffer from unstable functioning and other shortcomings. The required components will be delivered on time through authorized Navien centers, and without regular maintenance, any device will sooner or later end up in a landfill.

The lineup

Double-circuit gas boilers "Navien" are represented by several lines. Each of them has its own specific features that may be required for a particular dwelling. It will be useful to consider each of them separately.

Atmospheric line "Navien" Ace ATMO

Double-circuit boilers of this model range were developed for the most unstable conditions, so they are as unpretentious as possible. The compartment where gas combustion takes place is open. Therefore, when installing such a heating boiler, you will have to take care of a properly designed chimney that will have the required draft. Gas appliances of this subsection are ready to work even at a gas pressure of 4 mbar. AT winter period time it can be very helpful. The fact is that in houses where a large number of gas boilers, the flow rate can drop sharply when the temperature outside creeps down. But with such a boiler from Navien, you can forget about troubles.

If trouble does not come alone, and along with the blue fuel supply indicator, the water pressure also drops, then for Navien wall-mounted gas appliances, everything is nothing. The voltage stabilization system mentioned above perfectly tolerates the instability of the power supply. In the event of any unforeseen situation, the wall-mounted boiler will conduct an independent analysis and display an error code on the control panel. Some are easy to fix on their own. Are you planning to leave home and leave no one to control? Do not worry about freezing protection in wall-mounted gas boilers, everything will be done for you.

It is easy to adjust the temperature of the Navien boiler in the heating system within the range of 40º to 80º Celsius. Even the most heat-loving will be satisfied. For hot water supply, this figure is in the range from 30º to 60º. The liquid transfer pump in a double-circuit wall-mounted boiler has automatic sensor air, which will immediately throw it off.

Note! Boilers "Navien" of this type can easily work both from natural methane and from liquefied gas, so even in the absence of a centralized supply, it will be possible to power it. For the transition, it is enough to use a special kit. Boiler models available gas power which starts at 13 kW, and the maximum value is 24 kW.

Range with Navien Deluxe Coaxial turbine

Dual circuit wall boilers This line is very similar to the previous ones. They also tolerate various differences in gas and water lines. These "Navien" double-circuit boilers also cope with power surges perfectly thanks to the SMPS chip. Such boilers are equipped with a remote control with a sensor for better control. But they also have certain differences.

The combustion chamber in these wall-mounted boilers is closed, so a different system is used to supply air and remove exhaust. A special turbine is mounted directly under a specialized compartment of a double-circuit boiler. It forces the volume required for high efficiency and complete combustion fuel. This boiler system is modulating. Sensor atmospheric pressure monitors its value and controls the fan speed. The lower the pressure, the higher the rotation of the turbine of the double-circuit boiler, so that there is no power loss. There is no need for massive shafts to eject mining. It is enough to get a special coaxial pipe for these wall-mounted boilers.

Primary and secondary heat exchangers of Navien double-circuit gas boilers are made of stainless steel. Their service life is 6 times longer than that of similar copper ones. They are less susceptible to corrosion even from hard water. Some may worry that the choice of such material in the production of Navien boilers will reduce their performance. But this is offset by an intelligent boost system.

It's important to know! Representatives of double-circuit boilers Deluxe Coaxial received the highest performance up to 30 kW. If this is not enough, then you need to look towards the Ace TURBO Korea subsection. They have slightly modified the system of work with the supply and removal of atmospheric air, but they will allow heating the area from 350 to 400 m2.

Boilers with increased efficiency «Navien» NCN

How do you like the proposal to reduce heating costs by 30%? This became possible with Navien NCN double-circuit boilers. They use a unique technology that allows you to use the available resources more efficiently. This line combines the advantages of the previous three. There are all systems of protection and control. Additionally, the boiler has a large backlit display that shows the current status. But the whole point is to increase the efficiency up to 108%. How was this achieved?

There are several factors that contribute to this. In a double-circuit boiler, there is no separate supply of first gas, and then air, which is required for its combustion. There is a pre-mixing chamber in front of the burner in the Navien double-circuit boiler, so the substances enter there. Further, the mixture is transferred and ignited through the turbocharging unit of the Navien wall-mounted boiler. But the gases exhausted in a double-circuit boiler are not emitted. They contain a large amount of steam, which is easy to reuse. It enters the condensation unit.

The latter is another heat exchanger, to which a return current is supplied from the common system. Water, passing through this component of a double-circuit boiler, partially raises its temperature. Therefore, it enters the main burner of a wall-mounted dual-circuit appliance with a higher temperature, which means that it needs less energy to bring it to the state set on the control panel. Thus, savings are achieved in the double-circuit products of this line.

Important! Navien NCN boilers have another nice bonus. These double-circuit wall-mounted boilers are able to adjust the operating parameters depending on the weather. Those. if the temperature outside has dropped by another 10º, then you will not need to go and turn the thermostat up to a higher value, everything in the boiler happens automatically. To do this, you just need to mount an additional sensor, which is installed on the street.

Instead of a conclusion

Now you have complete information about the Navien wall-mounted gas boilers, so you can certainly do right choice. The issue of assembling and installing a heating system is up to everyone to decide for themselves. Someone is capable most do the work yourself. You can also independently prepare a site for a double-circuit wall-mounted boiler. But its connection is made only by specialists who can correctly put the double-circuit unit into operation and sign all documents. Do not save on quality, and as a result, on your health, choosing low-quality double-circuit boilers. You won't be able to get it back for the rest of the money.