Gas boilers Navien: overview of heating equipment

The modern market has a wide selection of equipment for heating and hot water. Equipment of this kind is in demand, has high demand. The growth of individual housing construction provoked a rise in user interest in devices for heating a house, creating an autonomous hot water system. Among the instruments of this direction, the gas boiler Navien, the brainchild of South Korean engineers, stands out. The equipment has many advantages that should be considered carefully.

The range of boilers Navien (Navien) with the characteristics

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

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

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

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

The following models are presented in the Navien equipment line:

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

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

• Steel (GA / GST). The line provides only room heating (single-circuit devices). There is a large selection of power - from 11 to 40 kW, narrow functionality allows you to get the device that is most specialized to perform its tasks. Reliability increases, reducing the number of structural elements allows to increase strength, resistance to temperature and pressure drops. Durable materials are used in the construction, in particular stainless steel. Devices from the GA or GST rulers can have a dual-circuit design, they are mainly manufactured in the floor-mounted design 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 remotely controlled using a smartphone. This method of temperature control allows you to most comfortably change the microclimate in the rooms, without leaving them, optimally configure the operating mode according to your own feelings. There are three operating modes, an outdoor temperature sensor is used, which allows you to adjust the heating depending on weather changes. There is a voice control mode. The price of devices of this line ranges from 30 to 50 thousand rubles.

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

User reviews

You can get the most reliable information about Navien boilers from people using these devices in their home. Consider some of the reviews:

They put gas into the house, and I immediately bought a Navien boiler. I have long dreamed of switching to gas heating, and even hot water is now my own. Now you can live like “white people”, and cook dinner normally, and wash yourself, and indeed. In general, I am more pleased than ever, there are no problems with the boiler, the installation is simple, I did not reveal any shortcomings. I recommend to everyone.

A gas boiler is an absolutely reliable and trouble-free thing, we have been testing this for ourselves for several years now. It works fine, never created a problem. Of the shortcomings, it’s possible to name some noise, if we knew, we immediately placed it in another place, and so all hands do not reach.

We installed a gas boiler Navien recently, but according to fresh impressions, we can say that the installation copes with its functions completely. A bit annoying is the rather high noise level from turning the burner on and off, which in heating mode does this quite often. In addition, the mode of heating hot water is unclear, although, most likely, I have not figured it out yet. In general, the impression of the device is quite positive.

We have been using the Navien gas boiler for about three years. I like everything, heat, hot water is present, everything works as the manufacturer promised.There are practically no drawbacks, some complain of noise, but our boiler is in a separate room, we don’t hear it. I would call the main drawback the impossibility of working without electricity, and with it we have interruptions. Although, of course, this is not a problem with the boiler, but with the power supply network.

Navien boilers are installed by the developer in all the houses of our village. Either the most unsuccessful models were selected, or poorly installed, but many are leaking. In addition, heat exchangers do not tolerate hard water and quickly accumulate scale. However, boilers are inexpensive, which is important when buying a home.

The opinions of different people agree in recognizing the successful, reliable design of the devices, although they have some drawbacks (in particular, noise during operation), but are quite functional, meeting the requirements of operation.

Technical device and principle of operation of a gas boiler Navien

Consider the device of a dual-circuit gas boiler Navien Deluxe Coaxial.

The device of the gas boiler Navien

The device has two heat exchangers, preparing the heat carrier (primary) and domestic hot water (secondary). The corresponding pipes are connected to the gas supply line, cold water, which enters the heat exchangers, where it is heated to certain temperatures. Then, using a circulation pump, the coolant is sent to the heating system of the house.

All operation of the device is controlled by an electronic unit that provides timely shutdown / inclusion of the burner, which controls the water temperature in both circuits by means of special sensors. The control board is protected from power surges, but in areas with frequent or significant power surges, it is necessary to use a stabilizer.

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

How to connect and configure

Installation of the boiler does not require any specific actions. Floor devices are installed in a specific place, mounted on a wall using a standard mounted rail.

The weight of the boiler is about 40 kg, so the wall must be strong, consist of reliable materials that can carry a heavy load.

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

The boiler is adjusted by bringing the gas pressure to the standard value. To do this, turn off the water supply and adjust the minimum and maximum gas pressure corresponding to the operation in different modes with the adjusting screw. Then resume the water supply. During operation, it is necessary to periodically check the condition of the boiler connections with a soap solution - if they are leaking, bubbles will appear. If noise or other signs of an unplanned change in operating mode appear, turn off the gas supply and check the condition of the equipment.

Brief Operating Instructions: Control and Adjustment

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

Common Errors and Causes of Failures

Sometimes the boiler gives a special code to the display, indicating an error in the operation of any system. Consider typical errors and codes:

This table lists common errors of Navien boilers

To solve the problems, you should eliminate the source of the malfunction yourself or consult a specialist. There are some special requirements that are indicated in the instructions. For example, code 10 - an error in the smoke exhaust system - can occur with a properly functioning system, just a strong wind rose outside. In order to avoid errors, carefully read the user manual.

Gas boilers Navien - practical and easy-to-use devices, economically advantageous, with full functionality and capabilities. At relatively low prices, South Korean equipment is optimally suited for harsh Russian conditions, allows you to create a comfortable temperature in the house, organize the supply of hot water. Installation, operation, maintenance of Navien boilers does not cause any difficulties, all actions are described in detail in the attached instructions. Detected malfunctions or problems that have arisen are quickly resolved by specialists from service centers.