Device, principle of operation, hydraulic and electrical diagram of the Navien boiler

A private heating system in a private house is much more preferable than connecting to a central heating system.

Dependence on suppliers, rising tariffs, worn-out networks and other problems disappear.

Installing your own boiler requires a certain initial investment, which subsequently pays off with noticeable savings on heating the house.

There are high-quality and relatively inexpensive gas devices that provide heating and hot water for domestic needs.

One of these units is the Navien Ace boiler, which should be considered more closely.

Series of gas boilers Navien Ace

The Navien boilers of the Ice (Ase) series are a family of gas by-pass units manufactured by the South Korean company KyungDong NAVIEN.

They provide heating for the home and in parallel supply it with hot water. A feature of Navien equipment is specialization in Russian conditions, climatic and technological.

It is possible to work at low pressure of gas and water, resistance to drops 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 about 2 times lower than European equipment of the corresponding capacity. Such advantages are highly appreciated by users, the demand for Navien units is stable and is gradually growing..

IMPORTANT!

Incorrect operation or difficult operating conditions can damage the boiler in a short time. This is not a result of poor build quality, but the result of insufficient attention and rejection of proper measures to create optimal working conditions.

How does Navien Ace TURBO work?

For example, consider the description of the operation of a turbocharged heater. Such a device is not afraid of low fuel pressure or power surges. It will heat any area. Along the way, heats the water - there is a second circuit. The DHW heat exchanger is made of steel. It is much cheaper than its copper counterparts. Lack of power - due to insufficient thermal conductivity of steel, it is possible to compensate - the turbocharging of the burner helps. Such devices easily compete with analogs with copper heat exchangers.

The turbo heater monitors the temperature of the coolant - if it drops below plus 10 degrees, the circulation pump turns on. It drives water, preventing ice crystals from forming. When the temperature drops below plus 6 degrees, the burner will light up - it will heat the coolant to +21 degrees.

The turbocharged units are produced in two modifications, the second one with a coaxial chimney "Navien Ice Turbo Coaxial". It is advantageous to install it in rooms where it is impossible to provide a normal oxygen supply. The coaxial chimney draws in air from the street.

What models and what capacity exist

The Ace series consisted of the following models:

• Ace Atmo
• Ace turbo
• Ace Turbo Coaxial

The Atmo models had an open (atmospheric) combustion chamber and needed an efficient smoke extraction system.

Their efficiency was noticeably lower, but this was successfully compensated by installing a copper heat exchanger, which has higher productivity compared to stainless steel assemblies..

The Turbo range featured a closed combustion chamber and turbocharging - a special fan supplied fresh air, increasing combustion efficiency and increasing draft in the smoke exhaust system.

A Korean or European (coaxial) chimney model was used to evacuate the gases.

The first option is two separate pipes - one for air supply, the other is a chimney.

A coaxial chimney is a pipe-in-pipe system where a chimney is installed inside and an air supply pipeline outside.

The power of all models was 10, 13, 16, 20, 24, 30 kW, etc. The most popular models are 16k and 24k, which are optimal for servicing a private house..

Model overview

Many users initially gave negative feedback about Korean boilers. The reasons are leaks in the connections. They had to be eliminated by replacing the gaskets - you need to buy a rather expensive kit. The second flaw was associated with the delayed start-up of the burner - the coolant had time to cool down more than necessary. But the company corrected the shortcomings, today there are practically no such accusations against Navien. The brand produces hanging heaters of three types:

• atmospheric;
• condensing;
• turbocharged.

The consumer can purchase a gas boiler:

• Single-circuit or double-circuit.
• Wall-mounted or floor-mounted. The latter are more bulky and require a separate room.
• With an open or closed combustion chamber.

The widest assortment is in the line of mounted models. It is these devices that are in the highest demand among Russian consumers.

Navien Atmo 24AN and others

Atmospheric wall-mounted apparatus Navien Atmo, replaced the less successful modification of Ace. It can operate at extremely low fuel pressure - 8 mbar, and water - 0.6 bar. There are 4 models of different power in the series - 13, 16, 20, 24 kW. The heat exchanger for heating is made of copper. For hot water supply - from stainless steel. Automatic control. There is a remote control. There is frost protection. Specifications:

• 24 kW.
• Heating water in the heating system - 80 ° C.
• Circuit pressure (maximum) - 3 bar.
• The efficiency is 86%.
• The maximum water temperature in the hot water supply is 60 ° C.
• Weight - 27 kg.
• Estimated cost 26-27,000 rubles.
• Heating area - 240 m².

Important! The system can only be filled with water - antifreeze is prohibited.

Deluxe 24K and other turbocharged modifications

The line of turbocharged modifications is presented at once by three series Deluxe (13-40 kW), Prime and Smart TOK (13-35 kW). "Navien Ice Turbo" is an outdated model, it was replaced by Deluxe and Prime devices. Forced heaters have a closed firebox, and air is forced into it by a fan. The fan performance is regulated by the controller. In order for air to enter the chamber, a coaxial chimney is organized. Due to forced injection, turbocharged modifications are distinguished by increased efficiency.

There are no more differences between the turbocharged and atmospheric versions. The complete set is completely similar - an expansion tank, a pump, an additional heat exchanger.

The Prime series, like the Deluxe Coaxial, has a closed firebox and all the usual elements of the turbocharged model. But Prime has an additional module - weather-dependent automation. Characteristics of the Deluxe 24K 2-circuit wall-mounted boiler:

• The efficiency is 90.5%.
• 24kW.

auto ignition.

• The maximum heating area is 20 m².
• Natural gas consumption - 2.58 m3 / h.
• Dimensions (WxHxD) - 440x695x265 mm.
• Weight - 28 kg.

NCN 40KN and other condensing models

The principle of operation of the condensing heater is based on the use of both direct and latent heat generated during gas combustion. This allows achieving high values ​​of efficiency - more than 100%. Condensing heaters are available in the Navien NCN and NCB models. Their heat exchangers are made of stainless steel. The equipment is similar to the turbocharged versions. The difference is that the controller functions are expanded. For example, he can program work for the next seven days. NCN is represented by 4 boilers 21-40 kW, NCB also by 4 boilers 24-40 kW. Air is supplied forcibly - through a coaxial or separate chimney. For example, the characteristics of the NCN 40KN:

• 40.5 kW.
• Two contours. Wall installation.
• Closed firebox.
• Auto ignition.
• Weighs 38 kg.
• The efficiency is 107.4%.
• The maximum heating of hot water is 65 ° C.

LST 30 KG and other floor models

The brand presents a line of floor standing boilers of four series - LST, LFA, GA, GST with a capacity of 13-60, 13-40, 11-35 and 35-60 kW, respectively. Each of the presented samples is a universal floor-standing device capable of operating both natural gas and diesel fuel. Floor-standing versions, no less than wall-mounted, are saturated with automation. For example, the characteristics of LST 30 KG:

• 90% efficiency.
• Weight - 45 kg.
• 30 kW.
• Heated area - 300 m².
• Auto ignition.
• Volatile.

Specifications

The technical characteristics of almost all models (with the exception of the Atmo series) are similar and differ only in the power of the unit.

It corresponds to the heated area - 13 kW boilers are capable of serving 130 m2, 24 kW - 240 m2, etc.

For ease of consideration, the main parameters of the Ace series boilers should be summarized in the table:

The difference in performance is only due to the type of combustion chamber and all associated design features.

It should be noted that the 16 kW models are a complete analogue of the 24 kW samples with reduced software capabilities, which provides a large margin of safety for the units.

Additional features

The known problem associated with the voltage drop in the mains is solved in Navien devices, thanks to modern technological solutions - the SMPS chip.

In most cases, they are detrimental to heating equipment. However, due to the use of a unique SMPS chip, this problem is not the same for Navien equipment.

The microprocessor of the boiler paired with the Switched-Mode Power Suppl chip allows you to equalize the voltage if its drop occurs within 30% of the nominal. This is true for boilers Navien Ace 24k (instructions for setting up this chip are detailed in the accompanying equipment documentation), Navien Ace 16k and some other models.

What do equipment owners think of this technology?

The declared technical characteristics regarding protection against high or low voltage are one of the arguments in favor of choosing this equipment, however, in practice, the owners of Navien equipment still use third-party voltage stabilizers.

I must say that the described technology regulates not only the voltage in the network, but also the pressure in the gas pipeline. The Navien Ace 24k boiler, the instruction of which determines the normal heating water pressure of 0.6 - 3.0 bar, and the DHW pressure of 0.3 - 8.0 bar, is also equipped with a protection system against pressure drops in the gas main. Thus, the gas pressure control in this unit is controlled at two levels.

As for the Navien Ace 16k boiler, the instruction of which requires compliance with similar standards for the pressure in the gas pipeline network, it is equipped with exactly the same security systems as its older brother.

Advantages and disadvantages

The advantages of Navien Ace boilers are usually attributed:

• The optimal combination of price and quality.
• Environmentally friendly process.
• Simplicity and convenience of adjustment and setting of operating modes.
• Adaptation to Russian conditions, the ability to operate on unstable indicators of gas pressure, water, power supply voltage.
• Simultaneous provision of heating and hot water supply.
• Long service life without service checks.

The disadvantages of Navien Ace boilers are:

• Dependence on the availability of electricity, gas and water.
• High noise level.
• Only original spare parts are suitable for repairs.
• The instability of the structure to the effects of hard water.

Most of the shortcomings are not the result of errors or defects during assembly, but rather are related to design features.

They are inherent in almost all gas boilers, regardless of the manufacturer.... Electromagnetic softeners or other suitable equipment should be used to avoid the formation of lime deposits caused by excessive water hardness.

How to increase the time between starting and shutting down a gas boiler?

If there is a problem of frequent switching on / off ("clock") of the gas boiler, you can change the difference between starting and stopping the unit. This is possible using the Navien engineering menu:

1. Turn off the remote control and hold down two buttons "+" and "-" simultaneously.
2. The display shows a number from 2 to 20. Usually 8 or 10.
3. Use the "+" and "-" keys to increase the delta value between start and trip.
4. After 5 seconds, the remote control goes out.
5. The boiler is unplugged and then switched on again.

Now the gas unit will operate in a new mode.

When cold weather sets in, the house needs to be warmed up. However, heating is a costly procedure. Therefore, the owner is interested in finding ways to save money. One of the options is the ability to turn off the heating while it is not needed. To carry out this procedure correctly, you need to know its features, which are described in more detail in this article.

Where is used

Gas double-circuit boilers Navien of the Ace series are designed to organize heating and hot water supply of residential premises or offices of the corresponding area.

This limits the scope of use of these units, although they can be installed in any premises. The main task is to match the serviced area with the capabilities of the equipment and the availability of all the necessary resources - gas, electricity and water (heat carrier).

NOTE!

In addition to the area, it is necessary to take into account the volume of the room, which may be too large for this model of the Navien boiler. The product passport indicates the maximum volume possible for the normal functioning of the system.

Navien products

Navien heating equipment is a reliable and durable equipment, the technical characteristics of which are suitable for heating and hot water supply of a private house or city apartment.

Wall mounted boilers

All navien wall-mounted boilers are compact in size and have a double-circuit design.

Navien ATMO series

It has a relatively low power from 9 to 24 kW. However, this capacity is quite enough for heating and hot water supply of a private house with an area of ​​up to 240 m2. Here are some of the technical characteristics that any double-circuit boiler of this series possesses:

• The copper heat exchanger allows quick and efficient transfer of heat from an open burner to the heating medium.

• Electronic modulation of the flame in automatic mode is able to adjust the required flame level.
• The intelligent anti-freeze system will prevent the system from freezing. Such a system turns on automatically.

Advice! The boiler comes with a remote Russified control panel that allows you to remotely start heating. This feature has received positive feedback from users.

Navien DELUXE series

The series has a range of two-circuit wall-mounted units with a capacity of 9 to 40 kW. This allows you to heat an area of ​​up to 400 m2. The main technical characteristics, which the instruction for the equipment contains, have the following indicators:

• The special stainless steel heat exchanger is less susceptible to corrosion and scale formation.
• An innovative turbocharging system ensures that the air / gas mixture entering the burner is proportional.
• This feature increases the boiler efficiency up to 92%.

Navien PRIME series

The main feature of this series of boilers is the built-in weather-dependent automation. Such automation is activated when a remote sensor is located on the street, which gives a signal to start the burner, depending on weather conditions.

Navien SMART TOK series

Navien double-circuit wall-mounted boilers of this series are equipped with innovative automation, the instructions for which allow you to control the operation of the equipment using a smartphone. By synchronizing your smartphone with the boiler automation, you will be able to:

• Start up the device when you return home from work.
• Adjust the heating power temperature while far from home.
• Remotely set the operating mode or turn off the heating.

This innovation during operation was appreciated by users who installed modern equipment, leaving numerous reviews on the manufacturer's website.

Advice! Also, wall-mounted boilers are represented by condensing models, which have an efficiency of about 100%. Such heating equipment is highly efficient and environmentally friendly.

Floor standing boilers

Powerful floor-standing navien gas boilers are represented by the following series of equipment:

1. Navien GST series: floor-standing boiler has a maximum power of 60 kW, which allows you to heat the area of ​​a private house up to 600 m2. In boilers of this series, a steel heat exchanger is installed, which reduces the cost and weight of the heating unit.
2. Navien GA series. The double-circuit floor-standing boiler of this series is distinguished by its reliability and compact dimensions. Small dimensions make it possible to install and run this equipment with your own hands.

Also, the Navien company produces diesel units. Such a floor-standing boiler is equipped with a modern burner, which ensures low-noise and highly efficient operation of heating equipment.

What's in the box

The unit includes the following elements:

• Heat exchangers (primary and secondary, primary can be made of copper or stainless steel, secondary - only made of stainless steel).
• Remote control panel.
• Circulation pump.
• Expansion tank.
• Three-way valve.
• Safety valve.
• Traction sensor.
• Automatic air vent.
• Connecting pipelines, other structural elements.

In addition to the main elements, the boilers are equipped with mounting brackets and other additional parts.

Technical specifications

What other technical parameters are characterized by Korean heating equipment is briefly indicated below.

• The operation of the boilers can be controlled remotely using a remote control panel.
• The presence of a heat sensor for the implementation of the climate control system.

Basic are defined by the following values:

• Smooth regulation temperature for the extract air circuit +40 +80 ° C;
• Modulating temperature for the DHW circuit +30 +60 ° C.
• Boiler dimensions - 722x440x220 mm.
• The noise level emitted during operation is 40 dB.

Modern Korean gas boilers Navien, reviews are generally positive, but some users are very confused by the high noise of the devices at the time of launch.

Someone blames the build quality for this, others - the unsuccessful design of the gas outlet, while noting that with a slight modification of the gas pipe, the noise disappears.

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The instruction for the use of the gas boiler Navien colorfully describes the sequence of execution of commands to control this device, which is capable of acting under such conditions when the equipment from competitors simply stops.

This is supported by both the fully electronic control system and the key principles applied to regulate the operation of the boiler. Navien, a product from a Korean manufacturer, is reliable, stable, able to cope with frankly emergency operating conditions.

Device

The main structural element of the Navien Ace boilers is a primary tubular heat exchanger connected to the combustion chamber.

In the upper part there is a chimney connected or combined with the air supply line. An 8-liter expansion tank is located on the left side of the housing, under which a three-way valve and a circulation pump are installed.

It provides movement of the heat carrier and hot water through the system... Passing through the heat exchanger, the coolant receives a high temperature.

The cold stream is then mixed using a three-way valve to achieve the desired system temperature. After that, the flow is removed from the boiler and directed to heating devices - radiators, convectors, etc..

Device and design

The design of Navien boilers has a number of features:

• circulation pump;
• universal heat exchanger of separate type;
• tank;
• automated control system;
• the possibility of using liquid or natural gas as fuel;
• ease of setting the heating mode - you can choose the required temperature that is most comfortable for your home;
• there is a possibility of setting the timer - you can set the time after which the boiler will stop working; the boiler can work for 30 minutes for a specified time with subsequent shutdown;
• using just one function, you can easily save on fuel and at the same time maintain the desired temperature during your absence.

Connection instructions

The installation of the boiler is not difficult - it is necessary to install the anchor bolts and hang the unit on the wall.

It is recommended to install noise-dampening elastic spacers between the cabinet and the wall. Do not mount the equipment on fragile or weak structures - plasterboard partitions or other similar surfaces.

You need a solid brick or concrete wall capable of supporting the weight of the boiler (about 30 kg).

The communications should be connected to the appropriate branch pipes. It is necessary to carefully monitor the conformity and tightness of the connections.

The main attention should be paid to the connection of gas pipes. Check all connections for leaks with a soap solution.

In the presence of a common chimney, a separate connection of pipelines is used - the air duct is led out into the street through the wall, and the flue duct is connected to the common chimney of the house.

Coaxial chimneys are led out through the wall, which is much easier and more convenient for installation.

Download instruction

You can download the instruction here.

What's special about ACE 24k Coaxial

The boiler of this series is a 2-circuit wall-mounted device 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 even install NAVIEN Coaxial in a plumbing unit.

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

Many manufacturers claim that it is their unit that has the best price-quality ratio. However, it is the NAVIEN ACE 24k Turbo model that excels in this parameter best. Its cost is really democratic, and its performance is 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 eliminated for relatively little money in one of the service centers.

Major malfunctions and solutions

Malfunctions of Navien boilers are usually diagnosed independently and displayed on the display with a corresponding code. A signal from one or another sensor turns on a message about the problem.

The most common mistakes are considered:

• 02. Lack / insufficient amount of water in the system. The issue is solved by feeding the system or replacing the flow sensor.
• 03. Lack of flame in the combustion chamber. Indicates problems with the ignition system, or lack of gas.
• 05-06. Open or short circuit of the RH sensor.
• 07-08. Open or short circuit of the DHW sensor.
• 09. Fan failure.
• 10. Failure of the smoke exhaust system.
• 15. Problems with the control board.
• 16. Boiler overheating.

The solution to most problems is to replace the corresponding sensors or assemblies, and also to clean and remove deposits in the connecting pipes.

IMPORTANT!

It is not recommended to undertake repairs yourself. This procedure should be entrusted to specialists from the service center or other specialized organization.

Frequent mistakes and malfunctions Navien Ace

Gas heating appliances from Navien are equipped with an electronic control system, which is also renowned for its reliability. All malfunctions in the operation of the heater are displayed on the liquid crystal display in the form of a digital code. Each code corresponds to a malfunction of one or another element of the heating unit, or a deviation of any operational parameters. There are 13 digital error codes in total.

Error E01

This error can occur in the Navien Ace gas boiler if the boiler overheats for some reason. In most cases, this is due to the failure of the centrifugal pump, which circulates the coolant in the heating circuit. The pump may not rotate if:

• the rotor is jammed (soured);
• the electronics that control the pump is out of order;
• burned out stator windings.

The last reason for pump failure entails the replacement of this boiler element. Also check the installation of the non-return valve. Perhaps he was put on the wrong side.

Error E02

This error most often appears due to low pressure in the heating circuit. Pressure may drop due to leakage. If no leak is found, then it is enough to feed the system with water, and this error will be eliminated. In some cases, this error may also be associated with incorrect operation of the circulation pump. To make sure that the pump is working correctly, you need to unscrew the plug on the back of the pump with a curly screwdriver, and visually determine whether the shaft is rotating or not.

Also, the E02 k error can occur when, for some reason, the heating circuit taps are closed, or when there is air in the heating system. Air is removed from the system using special valves.

This deviation in the operation of the Navien Ace gas boiler can also occur due to the malfunctioning of the flow sensor. The operation of this sensor is checked using a multimeter.If an E02 error occurs, it is also worth checking the dirt trap, which is traditionally installed in front of the boiler.

Error E03

This error indicates that for some reason there is no flame in the burner of the Navien Ace boiler. This malfunction can occur due to shutdown or extremely low gas pressure. You also need to visually make sure that there is really no flame on the burner surface. Gas may not be supplied even if the gas valve fails.

The flame may also be absent due to the fact that the ignition does not work - no spark is supplied. The absence of a spark can be determined by ear, since the clicks at the moment of sparking are clearly audible. The spark is controlled by the ignition transformer, and it may be out of order. Also, the absence of a spark can be caused by damage to the insulation of the electrode, with the help of which the gas is ignited. The presence of a spark from the electrode is determined visually.

Lack of flame can also be caused by insufficient earthing of the heater. This problem can be easily remedied with a heavy gauge wire or copper bus.

Error E04

This error can appear when the flame sensor does not work correctly. False triggering of this sensor can be caused by a misaligned electrode that strikes the sensor with a spark. Also, this error can appear if the pressure in the gas line is too high.

Error E05

A problem with this code means that the coolant temperature sensor is out of order. It also happens that the sensor itself is working, but its commutation with the control board is broken. This can be caused by condensation or water entering the sensor connectors, which can cause oxidation and loss of contact.

Error E06

This error is also associated with the incorrect operation of the water temperature sensor in the heating circuit. But this is no longer associated with the loss of contact with the sensor or the output of its history, but with a short circuit in the temperature sensor itself. If a short circuit occurs, then the boiler electronics perceives this event as extreme heating, due to which the protection is triggered and this error appears. The performance of the temperature sensor is determined using a multimeter. The resistance of this sensor at room temperature should not exceed 10.3 kΩ.

Error E07

This error is also associated with the temperature sensor of the Navien Ace boiler, but not in the heating circuit, but in the hot water supply circuit. The faults of this sensor are similar to those described in the previous section. The resistance parameters are also the same, which must be taken into account when checking the DHW temperature sensor.

Error E08

This malfunction indicates a short circuit in the hot water sensor. If this error is present, the temperature sensor is checked with a multimeter.

Error E09

This error appears in the Navien Ace gas boiler when the turbine does not work correctly. This can be caused by oxidation on the turbine connectors, which entails a loss of voltage, or no voltage at all. Also, the turbine itself can fail - rotate slowly or even jam.

Error E10

A malfunction with such a code signals that the removal of combustion products is difficult or impossible. This can be caused by the formation of ice on the chimney, which prevents the removal of combustion products.

Error E13

This error occurs when the flow sensor is not working properly. This is mainly observed with a short circuit of this sensor.

Error E15

A malfunction with such a code is observed when the voltage or its frequency is very different from the maximum allowable values. Also, this error can appear in the absence of grounding.

Error E16

This error signals overheating of the heater. This can be caused by insufficient circulation of the heating medium.

Error E027

This code indicates that the APS sensor is not working correctly or is out of order.

Price range

Prices for gas by-pass boilers Navien Ace range from 26 thousand rubles. (Navien Ace 13K Atmo), up to 32 thousand rubles. (Navien Ace-24K Turbo). It should be noted that these amounts are only the cost of the boiler itself, without delivery, installation, warranty agreement and other additional costs.

Stores carry out only sales, and warranty repairs and maintenance are performed by service centers, a contract with which is concluded and paid separately. Many buyers believe that the warranty is automatic upon purchase, but this is a misconception..

NOTE!

The Ace series is discontinued. It is still possible to purchase such units, since a lot of them were brought to the regions of Russia. But the possibility of warranty service must be clarified immediately, otherwise you may find yourself in an unpleasant situation.

The fundamental difference

As for the fundamental differences relative to other global brands, it should be noted that Navien engineers are not afraid to experiment, supplying their devices with new or improved technological solutions. So, the latest models of this Korean manufacturer use:

• Expanded simulated turbocharging system.

This technology is based on the idea of ​​reducing heat loss. This is realized using the Air Pressure System air pressure sensor. The turbocharging system provides for the installation of a fan directly below the gas combustion chamber.

The fan is controlled by an APS sensor.

Thanks to this technology, air is supplied to the chamber in a certain ratio, which significantly reduces the amount of gas consumed. Thanks to this technology, stainless steel heat exchangers have a higher efficiency, which is better than other copper heat exchangers.

If we talk about the real efficiency of the above, then for the Navien Ace 16k boiler, the instruction determines the efficiency of 91.2%, which is a fairly high indicator for gas boilers with a copper heat exchanger.

As for the adjacent model, which has a higher power, for the Navien Ace 24k boiler, the instruction regulates the efficiency at the level of 90.5% with a thermal power of 9-24 kW.

Does this technology deliver real tangible benefits to users? Korean gas boilers Navien, reviews of which are posted on almost every forum and specialized sales sites, indicate that the gas consumption of these boilers is really low, the boilers suit the owners in terms of performance.

However, many users have noted a noticeable increase in energy consumption, which is required to implement a turbocharging system.

What to look for during installation

Steel gas boiler Navien Ace

Since the instructions are attached to the equipment, there are no problems with installing and connecting the device. Doing it yourself is not a problem. Even a layman can understand the instructions. Moreover, it is written in Russian.

The only thing that specialists ask to pay attention to is a way to remove carbon monoxide gases. They can be discharged through a conventional atmospheric chimney, connected to the chimney system of the house or installed as a separate structure.

But if you are not satisfied with either option, you can make a coaxial chimney. Its installation is several times easier. But keep in mind that coaxial structures are used only when the heated area of ​​the house does not exceed 110 m². They can be installed with boilers with a capacity not exceeding 11 kW.