How to turn off the heating on a Navien boiler

The Navien wall-mounted gas boiler is an example of products manufactured by the Korean company of the same name for many years. Amateurs and specialists know its products as reliable and high-quality units that can last for many years. This is confirmed by numerous reviews from people who have purchased and used the equipment for several decades. However, sometimes troubles occur, resulting in breakdowns of some aggregate components. To learn how to diagnose detected malfunctions, you will need to carefully familiarize yourself with the technical characteristics of the Navien gas boilers offered by the company.

Manufacturer information

Wall-mounted gas boilers Navien
The KD NAVIEN company is one of the leading manufacturers of heating systems and all types of industrial electrical installations. It was founded in 1978 and since then has enjoyed well-deserved credibility among consumers. The modern technological base and powerful economic potential of the Korean company allow us to constantly expand the range of attachments. Much attention is paid to new developments and their implementation in the technological cycle. This approach to organizing production allows you to quickly respond to all changes in market conditions.

An active policy in the field of innovation has allowed KD NAVIEN AS to maintain a leading position in most segments of the heating equipment market for a long time.

The company has achieved particular success in improving the environmental friendliness and waste-free operation of heating installations. Significant achievements have also been noted in areas related to universal systems that allow generating both heat and electricity.

The advantages of products from this company include:

environmental safety of manufactured products;
automation of production processes, allowing to reduce the final price of the product;
the presence of built-in protection against sudden changes in voltage in the network and the possibility of installing double-circuit piping;
convenience and comfort of operating the unit.

The relative disadvantages of these products include dependence on power supply and excessive noise.

Types of wall-mounted boilers

Atmospheric gas boiler NAVIEN ATMO 24-AN
There are three types of wall-mounted heating devices of this class on the domestic market:

Navien atmospheric (open) boiler;
turbocharged wall models;
condensing devices.

Each of these positions requires separate consideration.

Atmospheric gas boilers

Units of this type have an open combustion chamber. Represented by the Navien Atmo model. It is intended for operation in conditions of uneven gas pressure (its differences can reach 8-17 mbar) and the coolant itself - from 0.6 to 8 bar. The power of the offered units varies from 13 to 24 kW. At an operating temperature of 80°C, the coolant heats hot water to 60°C with a production volume of 10 liters per minute. To remove combustion products, they are equipped with standard chimneys.

The heating circuit in atmospheric boilers is made of copper, and the heat exchanger body is made of stainless steel.

Only double-circuit units in wall-mounted and floor-mounted versions are supplied to the markets of Russia and the countries of the former USSR. A portable remote control is used to control the gas boiler. All samples of Navien Atmo products provide protection against freezing of the coolant; their efficiency is about 86%.

Turbocharged units

Turbocharged boiler Navien Deluxe 10 Coaxial
The group of units of the second type (with an isolated combustion chamber) includes models of the following series:

Prime, represented by boilers with a capacity of about 13-35 kW;
Deluxe, whose declared power ranges from 13 to 40 kW;
modern Smart TOK models with an indicator of 13-35 kW.

Portions of air are forced into the isolated combustion chamber - they are pumped through a special fan installed in a coaxial pipe. Thanks to this, units with a Coaxial design have a higher efficiency, sometimes reaching a record figure of 93%. Gas boilers from the Navien Deluxe series are able to withstand significant changes in supply voltage, as they are equipped with a built-in stabilizing device. In addition, they have the option of automatically maintaining the temperature of the media at a level not lower than the “cooling point” (6-9 degrees).

Condensing boilers

Condensing gas boiler Navien NCN 40KN
The third type of Navien gas boilers is represented by samples of equipment from the NCN and NCB series. Due to additional heating of the carrier with the heat of the condensate, their efficiency was increased to 99%. The functionality of these units is even higher than that of turbocharged boilers - the controller built into them allows you to set temperature parameters for a week in advance.

The Navien NCN product series includes four varieties with power from 22 to 40 kW, and NCB has the same number of products with ratings of 24-40 kW. The water in them is heated to 65°C, and the coolant circulating through the pipes is heated to 90°C. These units are able to withstand media pressure up to 10 Bar.

The air supply in equipment of this class is organized through a coaxial or conventional chimney.

Gas boilers "Navien Ace" - operating instructions and advantages of the model

Heating a private home » Boilers and boiler equipment » Gas boilers

Gas wall-mounted boiler NAVIEN

When a consumer is faced with the question of choosing a gas boiler for heating, they have to take into account a large number of criteria to ensure its efficient and economical operation. In this regard, domestic and foreign units should be divided. Unfortunately, not all “foreigners” can withstand the difficult Russian operating conditions - low quality coolant, changes in gas and water pressure, periodic power outages. True, many foreign analogues today have already been adapted to Russian conditions. For example, the well-known South Korean model line “Navien Ace” with instructions that stipulate that these boilers can be used in Russia.

The Navien Ace brand is a wall-mounted version of a double-circuit boiler. This model refers to Navien equipment with an open combustion chamber and natural removal of combustion products. What is included in the boiler design?

Boiler equipment

The design of the unit includes:

Two heat exchangers are made of stainless steel, which guarantees their long and reliable operation.
Remote display of the control unit, which is completely Russified. For the Russian consumer this is a very important condition.
Built-in circulation pump.
Expansion tank.
Safety valve.
Air vent operating in automatic mode.
A bypass valve, which is also adjusted automatically.
Traction sensor.
Electric current stabilizer.
Remote control, which is convenient in terms of maintenance.

The South Korean boiler navien ace is fully equipped with Japanese automation. In this case, the manufacturer provides a warranty period of 2 years. This is a fairly compact device with excellent technical characteristics. The operating instructions for Navien boilers make it easy to understand all the intricacies of setting up the device, modes and temperature ranges.

Classification

Navien Ace gas boilers are divided into two categories:

The first unit is a simple and traditional boiler with an open combustion chamber, which uses atmospheric exhaust of combustion products. The second is more advanced and has a turbocharged burner. This allows you to efficiently supply gas and burn it when the supply is unstable, which is associated with pressure surges. In addition, the second option is equipped with a special SMPS control system, which is based on highly sensitive chips. They are responsible for monitoring and regulating gas combustion processes. In all other respects, both options are no different from each other.

Both models can be classified as universal equipment. Adapted to difficult operating conditions, they are considered one of the most economical heating devices present on the Russian market today. An important component of the design is the remote control. This is very convenient when you can set modes and indicators from a distance, quickly making adjustments.

But what’s surprising is that Navien gas boilers can operate not only in automatic mode, but also in manual mode. This is especially convenient when the temperature outside the window changes sharply. Manual installation allows you to more accurately set parameters and indicators, which eliminates the smallest errors during the operation of heating equipment.

Navien ace gas boilers can be called universal units. They operate on natural gas or liquefied bottled gas. To switch from one type of gas to another, you only need to change the burner. No other changes are required.

What to pay attention to during installation?

Steel gas boiler Navien Ace

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

The only thing that experts ask you to pay attention to is the method of removing carbon monoxide. They can be discharged through a regular atmospheric chimney connected to the smoke exhaust system of the house or installed as a separate structure. But if you are not satisfied with any option, you can make a coaxial chimney. Its installation is several times simpler. 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 whose power does not exceed 11 kW.

Conclusion on the topic

Gas boilers "Navien Ace" are high-quality heating equipment with excellent technical and operational characteristics. Adapted to the difficult Russian operating conditions, they have firmly taken one of the leading positions in the Russian heating equipment market. Their popularity is not falling, which means there is a high probability that other models will always be in demand.

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Operation of Navien gas boilers

Gas boiler diagram
The place for installation and continuous operation of the gas boiler is selected taking into account the following points:

the unit hung on the wall must be removed from other household appliances at a distance of at least 60 cm;
the room with the device is equipped with an effective ventilation system;
The electrical outlet is located no closer than 30 cm from the boiler body.

To connect it at the installation site, you will need to connect a separate power supply line. Since the power it consumes (and therefore the current in the circuit) reaches a significant value, it is prohibited to turn on the device through a regular adapter or using an extension cord. According to the PUE, the branch for the unit must meet the following requirements:

supply voltage – 220V 50Hz;
the cross-section of the cable cores is selected based on the power of the installed equipment (at least 2.5 cm square);
The supply line is protected by a separate circuit breaker and RCD.

In accordance with current safety standards, the gas boiler body must be grounded.

Test switching on and off

Before starting the boiler, it is necessary to check the pressure inside the working circuit.
To independently start the boiler into operation, you will need to carry out a number of preparatory operations:

fill the system with water carrier;
remove any remaining air from it;
check the pressure inside the working circuit.

If you notice that it has fallen, you should immediately turn off the boiler and check all connections for leaks.

The first two operations are carried out in accordance with the instructions supplied with the equipment, which describe in detail all stages of startup work. When no deviations from normal conditions are detected, you can proceed to its daily operation.

Possible mistakes

The built-in fault detection system prevents serious equipment breakdowns.
Errors displayed during self-diagnosis of products from the Korean manufacturer are described using the example of the well-known Navien ACE 24 boiler model.

The built-in fault detection system prevents serious equipment breakdowns at the earliest stage of malfunctions.

If a malfunction is detected, electronic protection disconnects the gas unit from the network, blocking the entire heating process. At the same time, the error code is displayed on the screen or display of the device. Despite the fact that built-in diagnostic systems were developed for specialists, the average user is quite capable of independently understanding this issue and taking the necessary measures.

Error codes

Typical malfunctions of the Navien boiler are displayed with a specific error code.
Typical malfunctions of the Ice Navien gas boiler come down to several groups of problems, which are represented by the following error codes:

01E means that the equipment is experiencing overheating, detected by a temperature sensor;
02E indicates the appearance of leaks in the circuit controlled by the flow sensor (a decrease in the coolant level);
03E indicates the absence of a signal confirming the presence of a flame (even if the burner is working);
04E – indicates the presence of a flame in its physical absence (a short circuit in the flame sensor circuit is also detected);
05E - a typical error that occurs when there is a malfunction in the circuit for measuring the temperature of the medium in the heating circuit;
06E – temperature sensor (TD) failure code, indicating a short circuit in its circuit;
07E – error that appears when there is a fault in the diesel fuel line in the DHW circuit;
08E – problems with the same sensor, but occurring due to a short circuit in its circuit.

Error code 09E indicates a malfunction of the fan.
Error code 09E indicates improper operation of the fan, which needs careful inspection and replacement. Error 10E indicates problems with smoke removal, and 12E indicates that the flame in the burner has gone out.

The following block of ciphers that appears in the event of a malfunction:

13E indicates a short circuit in the flow sensor of the heating circuit;
14E is a code for the absence or violation of the normal gas supply from the main;
16E – error that occurs due to overheating of equipment components;
18E – violations related to the operation of the smoke removal system (overheating of the sensor, for example).

We can come to the conclusion that the most unreliable component is the control board. But in reality this is not the case, since it fails much less often than the sensors it serves.

There are no special instructions for troubleshooting problems that have arisen in the accompanying documentation. The manufacturer explains this by saying that the maintenance and repair of gas equipment from Navien is carried out by representatives of the service company. When a user decides to fix a problem on his own, he must understand that he is voiding his warranty.

In the apartment we use a Navien Ice gas boiler - the savings are obvious

We got a Navien Ace double-circuit gas boiler along with the apartment we bought. It was already connected to the heating system and hot water. That is, it was completely ready for use.

The cost of such a boiler currently ranges from 18,000 to 23,000 rubles.

The boiler fully ensures the functioning of the autonomous heating system and the supply of hot water to the room. True, in order for it to work, it is necessary not only to supply gas, but also to connect the boiler to the power grid. If suddenly your power goes out in winter, the heating system will also fail, since the boiler will not be able to function at all. Its electronic on/off mechanism cannot operate without electricity, just like any other electronic mechanism.

If you decide to switch to such a source of heat and hot water in order to save on utility bills, rest assured, you have made the right choice.

For comparison, living in a one-room apartment with an area of 37 square meters. m. we paid for heating and hot water about 1800 rubles/month. Having moved to an apartment of 100 sq. m. with heated floors and autonomous gas heating, we began to pay about 1,200 rubles/month for these amenities. With the increase in space, our rent not only did not increase, but only decreased.

The Navien Ace - 20A boiler is not the most powerful of all. It belongs to the medium power category. This boiler is enough to heat a living space of 100-150 square meters.

Dimensions are shown in the figure:

The structure and elements of the boiler are shown in the photo below:

At the same time, it can provide not only heating throughout the entire area of the apartment, but also supply hot water to the kitchen and bathroom. Depending on the setting, hot water is heated in the range from 30 to 60 °C.

The photo below shows the pressure sensor in the system:

The heating system heating can also be adjusted from 40 to 80 °C. Naturally, the higher the heating temperature, the greater the gas consumption. The advantage is that you can set the desired water and heating temperatures yourself. And in case of departure, you can completely turn off the heating system. In any case, the boiler will not freeze, because the protection system will automatically turn it on for low heating at 21 °C if the water temperature in the pipes is less than 6 °C.

Another note: Heat-resistant plaster for stoves and fireplaces “Pechnik” - we repair the stove in the country

There is a function to switch the water heating mode from winter to summer. During summer mode, the liquid entering the boiler is heated to a temperature above the set one, then circulates inside the boiler, heating the newly incoming water. Thus, the hot water at the outlet is heated sufficiently. This saves gas significantly.

Instructions for connecting the boiler are shown in the figures below:

And here's what it looks like in real life:

Now a little about the disadvantages of using this boiler model from the Korean manufacturer Navien. The most important thing is that it takes some time to warm up. Therefore, when you turn on the hot water tap, the first time the water flows is cool enough for washing.

If you have somewhere to put a storage tank at home, I advise you to install it and drain this cold water there, which can then be used for a variety of technical needs. The volume of such liquid is approximately 7-10 liters if no one has turned on a hot water tap before you and the boiler has not been operating in heating mode.

The second disadvantage is that after a short break, when turned on, the boiler heats the water unevenly. Within about half an hour after you start washing, the water temperature fluctuates from very hot to very cold. But after 15-20 minutes the boiler adapts to the heating mode you require and this problem disappears.

Features of choice

Gas boiler Navien DELUXE COAXIAL 24K
The most popular among consumers are the white varieties of Navien boilers with a stated power of up to 16 kW. They are represented on the sales market by the following original models:

Deluxe Plus 16K brand products;
wall-mounted boilers Deluxe Coaxial 16K White;
equipment under the brand name ATMO.

All units marked with the Kotel brand name have similar characteristics, and minor differences mainly concern only individual components and parts. When purchasing them, special attention is paid to the warranty provided by the manufacturer and the presence of a quality certificate. The demand for boiler samples with a declared power of more than 25 kW is not so great, since their cost is significantly higher.

Gas boiler care

To avoid problems with the boiler, you should master the basic techniques for caring for it. In order not to lead the situation to the need for repairs, the user must adhere to the following operating rules:

keep the boiler clean, avoiding accumulation of large amounts of dust;
periodically check the voltage in the network;
control the coolant pressure and prevent it from falling below the limit level.

The manufacturer does not recommend servicing a gas heating unit yourself or touching its electrical circuit. It is only allowed to follow the distances from walls and other objects specified in the instructions - at least 15 cm.

To ensure reliable protection of the purchased equipment, careful familiarization with all typical errors and the ability to eliminate their consequences will help.

Gas boiler Navien - instructions for safe use and care

Heating installations with Korean “roots”, Navien, are often used both in private country houses and in apartments.

What is the reason for such popularity, what design features does the equipment have, and what difficulties may a consumer encounter when purchasing a Navien gas boiler?

Instructions for safe use (operation), selection of model and proper care. We'll tell you about everything further.

Features of the Navien gas boiler

Navien produces devices of various capacities designed to provide heating for gas-fired homes. However, the technical features of the models allow them to be converted to an autonomous gas supply, that is, connected to cylinders.

A wide range of models allows you to choose a model to suit any needs and capabilities.

There are boilers:

wall and floor;
single-circuit and with hot water supply;
with atmospheric and closed combustion chamber;
with different heating outlet sizes (three options: 20, 25, 32);
with different chimney diameters;
and of course, the models differ in power and size.

The manufacturer did not neglect the design.

The devices have an elegant appearance and fit well into a kitchen or any other interior.

Security systems supplied with Navien boilers:

Modulated turbocharging.
Protection against coolant freezing.
A special chip (SMPS) protects against 30% power surges.
A control panel with a temperature sensor that allows you to maintain t constant and adjust the operation of the boiler to special circumstances.

Modulated turbocharging. The system is based on the interaction of a fan supplying combustion air and a pressure sensor (APS).

The fan rotation intensity changes in proportion to how much gas is supplied at the moment. This allows you to use resources economically and increase efficiency without wasting fuel.

Design and main elements of the boiler

It is important to know your boiler in order to carry out basic maintenance. Although the model may vary from model to model, the main elements can be found in the case:

combustion chamber;
heat exchanger;
expansion tank;
gas burner;
circulation pump;
Control block.

Particular attention should be paid to the design of the lower part of the case, since this is where the inputs and outputs of the circuits are connected, and other important parts are located.

Navien boiler diagram

Closer to the wall there are 4 connecting pipes:

Feed input.
Return inlet (with safety valve).
Hot water outlet.
Cold water.

Next is a small gas supply pipe.

In front of the return inlet there is a hot water filter, and even closer there is a drain plug.

In front of the DHW outlet there is a make-up tap, through which the system is filled with water.

The principle of operation of the anti-freeze system. When the temperature in the pipes drops below -10°, the pump automatically turns on, which circulates the coolant and prevents it from freezing.

If the temperature continues to drop and it reaches -6°, the burner is activated, which heats the water to +21°.

Operating modes

Like many heating appliances, Navien boilers have winter and summer operating modes. On the display, the mode change button is indicated by the “Snowflake” and “Sun” icons.

By pressing this button again, you can change the options:

Winter mode activates heating and hot water supply.
Summer is only hot water supply for household needs.

You can adjust the coolant temperature on the remote control when the heating radiator icon lights up on the display.

In some models, to do this you need to press the “Heating Mode” button, in others you need to turn the knob with this icon.

A flashing radiator icon means that the numbers you see show the set temperature of the coolant.

If the “radiator” just lights up, the actual temperature in the heating is displayed.

Having selected “radiator”, you need to press the “+” or “-” keys to increase or decrease the temperature. A few seconds after the desired temperature is set, the radiator icon stops blinking, and the display will show what temperature the coolant is now, and the device will begin to gradually heat it (or cool it) to the selected one.

You can adjust the temperature in heating within the range from 40 °C to 80 °C with a plus sign.

Adjusting the hot water temperature

To increase or decrease the temperature of hot water, you need to press the tap icon on the remote control.

By turning the knob or adjusting the temperature using the plus and minus buttons, you can set the desired heating level. It is recommended to do this not while taking a shower, but in advance.

The adjustment step is 1 °C. The limits within which t varies: from +30 to 60 °C.

Precautionary measures

The room where the boiler is located must be well ventilated.

Gas cylinders, if used, should be stored in a separate cool room.

Do not dry things on gas heating pipes.

The power supply parameters must meet the requirements for the specific model (For example, 220V, 50 Hz).

The unit must be plugged into a separate outlet (other devices cannot be plugged into it); extension cords and adapters are not allowed.

Do not touch the body of the device with wet hands or plug it into the mains.

A working device must be in a protective housing.

You cannot install or repair gas equipment yourself - this is the work of government services. Once a year, these services will conduct a preventive inspection of the boiler.

Periodically you need to check all joints of the boiler and pipeline for leaks. Applying a thick soap solution will show if there is a gas leak.

If bubbles appear, immediately turn off the gas valve, provide air flow and call emergency services.

Do not clean the unit while it is running. To clean the case, you need to turn off the power, turn off the gas and allow the device to cool.

After which, the body can be wiped with a soft cloth or sponge.

Filling the boiler and heating system with water

Error code 02 indicates that there was an attempt to start the boiler, but there is no water in the system, or there is not enough water. What to do:

The appliance is unplugged and the gas supply is cut off.
At the bottom of the boiler, among many elements, you need to find a make-up valve. Turning it counterclockwise opens it, and turning it clockwise closes it.
When the tap is open, monitor the pressure gauge. You need to close the tap when it shows 1.3 - 2 bar.
Now the boiler is connected again, gas is supplied and the start is made.

Don't worry if error 02 appears again. This may be caused by the fact that after bleeding the air (which is automatically done at startup), the water level is again insufficient. The filling operation must be repeated.

Draining water from the boiler and hot water supply system

If the boiler is not planned to be used for a long time (especially in winter), it is recommended to drain all water from the heating and hot water circuits. What to do:

The unit is de-energized and the gas valve is closed.
The valves of the heating system (2 pieces) and cold water are closed.
The tap that is usually used opens (above the sink, for example) and drains hot water from the system.
The tap in the DHW system is closed.
A plug is opened at the bottom of the housing and water from the heating is drained.

Draining the water may be necessary during system maintenance.

Cleaning the heating water filter

Filters collect all the impurities contained in the water.

They need to be cleaned periodically, for this:

Drain the water (see previous paragraph).
Wait until the equipment cools down completely.
There is a filter located not far from the drain plug. To remove it, first remove the mounting bracket, then pull out the filter itself.
It must be rinsed under pressure with clean water.
Then reassemble in reverse order.

If the filters are not cleaned in time, the boiler will overheat.

Possible malfunctions and ways to eliminate them

Navien error codes:

01 – overheating (check if the pump is working and if the filter is clogged).
03 – no gas (check if the tap is open).
04 – false flame signal (check the serviceability of the gas valve, replace the electrodes or board).
05 – 06 – Short circuit on the temperature sensor or open circuit.
09 – problems with the fan.
10 – problems with smoke removal (check the operation of the fan, whether the chimney is clogged, whether the fan pipes are connected correctly, gusty wind could also be the cause).
013 - Short circuit on the OM flow sensor.

If the boiler does not give any errors, but works much worse, the reason may be a clogged filter or an airy system.

Navien boilers, like any other equipment, require good care and proper handling. Regular checks and service control will help avoid breakdowns.

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