Overview of Navien gas boilers and customer reviews

Price range

Navien gas boilers have a fairly wide range of prices. This is due to the design features, power and composition of the equipment. The most common options cost from 28 to 46 thousand rubles, although some samples of large-capacity gas convection boilers cost more than 100 thousand rubles.

It is necessary to add to the price of equipment the costs of delivery, installation and commissioning, which are paid separately and significantly increase the total cost.

IMPORTANT!

When buying, you should clarify the procedure for concluding a warranty contract.Some stores have the authority to enter into such contracts, others only make sales. Then you have to independently contact the service center and conclude an agreement with them. This must be done immediately upon purchase, as the warranty is often denied, referring to the need for installation by the service center employees.

Model range of boilers Navien (Navien) with characteristics

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

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

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

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

The Navien equipment line includes the following models:

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

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

Please note that equipment prices vary by region and may increase.

What is the difference between this model and other representatives of the series?

The series includes the following models:

• Navien Deluxe Coaxial 24k.
• Navien Deluxe Plus 24k.
• Navien Deluxe 24k.

The differences between the models are small. The "Coaxial" model is designed for the use of a horizontal coaxial chimney ("pipe in pipe" type), which is convenient for installation in an already lived-in house.

It does not require a complex organization of the passage of the chimney through the ceiling and roof.The “Plus” model has a control panel built right into the body, which is convenient when installing the unit in the kitchen.

The basic Navien Deluxe model has two branch pipes for the exhaust of combustion products and the supply of fresh air, separate for each line.

They can be connected both to vertical pipelines and brought out through the wall.

Device

Navien gas boilers consist of the following main components:

• Two heat exchangers - primary (copper or stainless steel) and secondary (stainless steel). On single-circuit series - only primary.
• Combustion chamber with a gas burner, structurally integrated with a primary heat exchanger.
• Expansion tank.
• Circulation pump.
• Three-way valve.
• Turbo fan (on dual-circuit models).
• Sensors, control board, connecting pipelines, protective cover.

Depending on the type of construction, there may be additional elements that perform certain functions.

Popular Models

The time has come to consider the most popular models of Navien gas boilers, in demand among domestic consumers. It is they who deserve the highest ratings from users, providing them with warmth.

Gas boiler Navien ATMO 24AN

The double-circuit gas boiler Navien ATMO 24AN is made according to the traditional convection scheme and is equipped with an open combustion chamber. With a power of 24 kW, it can warm up to 240 square meters. m. of living space, spending up to 2.47 cubic meters. m / h (this is the maximum figure). The DHW capacity reaches 13.7 l/min. The primary heat exchanger is made of copper, the secondary heat exchanger is made of durable steel. If necessary, the device can be reconfigured to work with liquefied gas.

For more convenient control, remote controls with built-in thermostats are connected to the unit (such a remote control is supplied). Inside them, all the necessary piping is provided - these are expansion tanks and circulation pumps. The estimated cost of equipment varies between 23-26 thousand rubles.

Gas boiler Navien DELUXE24K

Before us is a mounted boiler Navien, created on the basis of a burner with a closed combustion chamber. Unlike the previous model, a clear minus catches the eye - this is a steel primary heat exchanger. If we analyze the reviews of experts, we can find out that copper heat exchangers are the most stable and easy to repair, but equipment with them is more expensive. The power of the presented unit is 24 kW, the capacity of the DHW circuit is up to 13.8 l / min. It is electronically controlled with a diagnostic system and a room thermostat. The efficiency of the device is 90.5%, the cost is 24-26 thousand rubles.

Gas boiler Navien Smart Current 24K

In the line of equipment from Navien, this unit is the most advanced. It is endowed with a closed combustion chamber, an electronic control system, a remote control, a control option via the Internet, a self-diagnosis system, a programmer for operating modes, built-in piping and an outdoor temperature sensor. In other words, this is the most stuffed device from the Korean Navien. Thermal power is adjustable in the range from 8 to 24 kW, the performance of the DHW circuit is up to 13.8 l / min. The efficiency is 91%, the maximum gas consumption reaches 2.79 cubic meters. m/hour. It is possible to operate the device on liquefied gas.

Nevien gas boilers

The South Korean concern KyungDong NAVIEN is known for its equipment for heating and hot water supply of residential and industrial premises.

Gas boilers make up a significant share in the overall range of the company, although they are not the main product.

They differ in specialization to Russian conditions, are able to work with unstable or low pressure of gas, water, automatically correct voltage fluctuations in the power supply network up to 30%.

This makes them the most preferred option over European models, and the low price increases the demand and popularity of Korean units.

How to choose and what to look for?

The main parameters for choosing a gas boiler for residential, administrative and industrial premises:

• power - the efficiency of space heating depends on it;
• type of installation - in the brand line there are floor and wall models;
• type of burner - devices with a natural chimney of combustion products and are equipped with a closed combustion chamber;
• functionality - there is equipment with the ability to connect a boiler to provide hot water;
• additional elements - models are equipped with overheating sensors, screens with information about pressure and temperature, remote controls and a scoreboard with information about the operation of the device.

Model parameters Ace 35k

This wall-mounted gas boiler "Navien" is in demand among many buyers because of its parameters. The performance of the system averages 14 liters per minute. Among the models of the above series, this is the best indicator. The Ace 35k also boasts the high pressure it can handle. Fasteners in the standard kit are included quite high quality. In terms of dimensions, this model does not differ from its counterparts.In addition, it should be noted that the connection pipe for natural gas is 1.2 inches in diameter. The overall efficiency in this case is at the level of 85%. This model costs exactly 30 thousand rubles on the market.

Kinds

There are different types of gas boilers Navien (Navien):

• By type of installation - wall and floor. The difference between them is clear from the name. Floor units have a large capacity and dimensions. Wall-mounted are more compact, do not take up too much space and can be installed directly in the room with disassembly points.
• According to the design of the combustion chamber - atmospheric and closed. In atmospheric models, combustion occurs with the direct participation of room air and requires high-quality ventilation. Closed systems provide air supply to the chamber (turbocharging) and the removal of combustion products to the outside without contact with the internal atmosphere of the house. Atmospheric types have lower efficiency, but are much cheaper than closed models.
• There are also convection and condensation models. The first, the most common, use only the energy of fuel combustion. The second type of boilers, more complex in terms of design and expensive, uses the energy of the exhausted combustion products, receiving an additional 30% of heat. This is due to the presence of an additional heat exchanger, which uses the energy of steam generation in the smoke exhaust system.

IMPORTANT!

The most popular models are convection samples with a closed combustion chamber. They have the highest efficiency and an optimal ratio of price and performance parameters.

Main errors and their elimination

Gas boilers are equipped with a good diagnostic system that scans the boiler operation parameters every minute and, in case of their violation, issues a coded signal to the operating panel to eliminate the malfunction:

The main failure codes for Navien gas boilers:

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

Principle of operation

The circulation of the coolant, as well as water, occurs using a pump

Air is forced into the combustion chamber. This process is carried out through the ventilation system, which is also built into the boiler. Oxygen enters the system through the chimney. This part is mounted in various models with a closed firebox.

It should be noted that Navien products are made of stainless steel. This allows you to significantly increase the life of wall-mounted gas boilers. After all, such a material is perfectly protected from corrosion and is able to withstand prolonged thermal loads, as well as thermal shocks.

Pros and cons

The advantages of Navien 13k boilers include:

• High quality work, steady and stable heating mode.
• Ecological cleanliness, no harmful emissions.
• Simultaneous supply of coolant to the heating system and domestic hot water.
• Adaptability to Russian operating conditions.
• The optimal combination of price and quality, far ahead of all competitors.

The disadvantages of Navien boilers are considered to be:

• High noise level.
• The need to use a voltage stabilizer.
• Dependence on the composition of water.
• There is a general weakness of the connections, the unreliability of some structural details.

IMPORTANT!

Most of the shortcomings are equally characteristic of any type of gas boilers and are features of their design.

Model overview

Many users initially gave negative feedback about Korean boilers. Causes - 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 a belated start 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;
• condensation;
• turbocharged.

The consumer can purchase a gas boiler:

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

Navien Atmo 24AN and others

The atmospheric wall-mounted device 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 - stainless steel. Automatic control. There is a remote control. There is frost protection. Specifications:

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

Deluxe 24K and other turbo modifications

The line of turbocharged modifications is represented by three series of Deluxe (13-40 kW), Prime and Smart TOK (13-35 kW) at once. 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 performance of the fan is controlled by the controller. In order for air to enter the chamber, a coaxial chimney is organized.Due to forced injection, turbocharged modifications are characterized by increased efficiency.

There are no more differences between turbocharged and atmospheric versions. The equipment 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 a turbocharged model. But Prime has an additional module - weather-dependent automation. Characteristics of the 2-circuit wall-mounted boiler Deluxe 24K:

• Efficiency - 90.5%.
• 24kW.

auto ignition.

• The maximum heating area is 20 m².
• Consumption of natural gas - 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 released during gas combustion. This allows achieving high efficiency values ​​- more than 100%. Condensing heaters are available in the Navien NCN and NCB models. Their heat exchangers are made of stainless steel. The package is similar to the turbocharged versions. The difference is that the functions of the controller are expanded. For example, he can program work for the next seven days. NCN is represented by 4 boilers 21-40 kW, NCB also 4 models 24-40 kW. Air is supplied forcibly - through a coaxial or separate chimney. For example, the characteristics of NCN 40KN:

• 40.5 kW.
• Two contours. Wall mounting.
• Closed furnace.
• Auto ignition.
• Weighs 38 kg.
• Efficiency 107.4%.
• The maximum heating of water in hot water supply is 65 °C.

LST 30 KG and other floor models

The brand represents 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 outdoor apparatus capable of operating on both natural gas and diesel fuel. Floor versions, no less than wall-mounted ones, 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.

Advantages and disadvantages

The advantages of Navien gas units include:

• The optimal combination of cost and functionality of boilers.
• Environmentally friendly type of equipment.
• Possibility to get both heating and hot water supply using one boiler.
• Simplicity and a wide range of options for managing operating modes.
• The presence of a remote control panel.
• There is a self-diagnostic function that shows the error code and makes it easier to find the problem.
• With proper operation and maintenance, the service life of the boilers is practically unlimited.

There are also disadvantages:

• Units do not tolerate contact with hard water.
• High noise level.
• Dependence on the supply of gas, electricity, water.

Both advantages and disadvantages are design features and are inherent in almost all samples of such equipment, regardless of the manufacturer.

Operating principle

The combustion of fuel contributes to the heating of the coolant in the primary heat exchanger.

The circulation pump ensures the movement of water through the system, constantly supplying new portions of the cooled stream to replace the heated one.

The three-way valve performs temperature control by mixing a certain amount of cold heat carrier into the flow with the maximum degree of heating, as a result of which the set temperature is formed in the system.

The combustion of the fuel is maintained and enhanced by the air flow supplied by the turbocharger fan.

All work is constantly monitored by appropriate sensors that transmit signals to the control board, which interacts with the remote control.

Operating principle

The combustion of fuel contributes to the heating of the coolant in the primary heat exchanger.

The circulation pump ensures the movement of water through the system, constantly supplying new portions of the cooled stream to replace the heated one.

The three-way valve performs temperature control by mixing a certain amount of cold heat carrier into the flow with the maximum degree of heating, as a result of which the set temperature is formed in the system.

The combustion of the fuel is maintained and enhanced by the air flow supplied by the turbocharger fan.

All work is constantly monitored by appropriate sensors that transmit signals to the control board, which interacts with the remote control.

The specifics of Navien gas boilers from various model ranges

The capabilities and features of the operation of Navien gas boilers can differ significantly depending on which line they belong to. We suggest that you get acquainted with the specifics of each type, so that it is easier for you to navigate the existing varieties.

Each type has its own characteristics of work and installation

Atmospheric boilers Navien

Gas boilers of this model range are able to remain operational in the most adverse conditions with significant pressure fluctuations in the gas pipeline. Are completed with the combustion chamber of open type. As a result, for the timely removal of combustion products, aspirators must be connected to a chimney with a suitable draft. The abbreviation "ATMO" is present in their marking.

Air intake is carried out outside the house

When using them, the temperature of the heat carrier in the heating circuit can range from 40ºС to 80ºС, and hot water - from 30ºС to 60ºС. Devices can operate on natural and liquefied gas. This makes it possible to heat buildings located far from the gas main.

Special requirements for installation work

Turbocharged boilers Navien

The equipment of this line is able to maintain operability during pressure fluctuations in the gas pipeline. The presence of a special SMPS chip makes them resistant to power surges. Turbocharged gas boilers are equipped with a closed combustion chamber. Depending on the method of supplying air and removing combustion products, they are usually divided into devices:

1. With coaxial chimney. This is evidenced by the letter "E" in the marking. The design of the chimney involves the presence of two pipes placed inside each other. External is used for the timely supply of oxygen to the combustion chamber. The internal one removes the products of combustion.
2. With separate chimney. There is a "K" in the marking. These boilers have two nozzles, one of which is used to supply air, the second - to remove combustion products.

In a coaxial chimney, the pipe is inside the pipe

Condensing boilers Navien

These are modern devices, for which the symbols "NCN" are used. Due to the special design, they have a high efficiency. To heat the coolant, the condensate collected in the heat exchanger and heated to a high temperature is used. A special system ensures the collection of condensate without harmful impurities.

The special design of Navien condensing gas boilers makes them reliable and highly productive.

Price range

Navien gas boilers have a fairly wide range of prices. This is due to the design features, power and composition of the equipment. The most common options cost from 28 to 46 thousand rubles, although some samples of large-capacity gas convection boilers cost more than 100 thousand rubles.

It is necessary to add to the price of equipment the costs of delivery, installation and commissioning, which are paid separately and significantly increase the total cost.

IMPORTANT!
When buying, you should clarify the procedure for concluding a warranty contract. Some shops have the authority to enter into such contracts, others only make sales

Then you have to independently contact the service center and conclude an agreement with them. This must be done immediately upon purchase, as the warranty is often denied, referring to the need for installation by the service center employees.