Setting up and starting the Navien boiler: manual and technical specifications

Common malfunctions and their solutions

Errors in the operation of the boiler are displayed by corresponding codes on the control panel.
Among them:

E01. Boiler overheating. Occurs when the circulation pump fails, or less often when the coolant filter is dirty.
E02. Coolant circulation error. Indicates the formation of leaks in the system or the boiler itself (connections).
E03. No flame on the burner. This indicates either a failure of the ignition coils or a lack of gas in the system.
E04. Parasitic flame. There is a gas leak or a spark jumps between the flame sensor and the ignition electrodes.
E05, E06. Open circuit (short circuit) of the extract air (heating water) temperature sensor. Occurs when the contacts close, most often due to the presence of condensation or other moisture on the board with the sensor.
E07. DHW heating sensor failure. It is necessary to check the contact or quality of connection of the sensor.
E08. Short circuit of the DHW heating sensor. The sensor or the entire controller needs to be replaced.
E09. Fan failure (failure). Check the contacts and, if necessary, replace the fan.
E10. Malfunction of the smoke removal system. Usually occurs due to blockage of the chimney by ice from condensation.

NOTE! There are other error codes that appear when certain problems occur. A complete list can be found in the user manual for this device.

Device

The Navien gas double-circuit boiler heats the coolant and ensures its circulation in the system.

A gas burner combined with a primary tubular heat exchanger heats the OM flow, which passes through a three-way valve at the outlet.

To obtain a given temperature, a certain amount of cooled return water is mixed in, after which the coolant is sent into the system.

The combustion mode is regulated by the supply of fresh air, which is provided by the fan.

Hot water is heated by a secondary heat exchanger (plate). The operation of all devices is monitored by a system of sensors that signal to the control board about the occurrence of certain problems.

Navien presents a universal water heating system

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

Frost protection system stability

If the room temperature drops, the automatic protection system is activated

from freezing. When the temperature of the heating water drops by more than 10 degrees Celsius, the circulation pump automatically starts, resulting in constant circulation of the coolant in the heating system. If the temperature of the heating water drops to 6 degrees Celsius, the burner is automatically turned on and the coolant warms up to 21 degrees Celsius.

Safety of operation during frequent power surges

According to the instructions, the voltage can fluctuate within ±30 percent due to the triggering of the Switched - Mode Power Supply (SMPS) protective chip on the microprocessor. At the same time, the boiler operation does not stop

, which prolongs its service life and prevents breakdowns.

Operating conditions for heating and hot water:

provided there is low inlet pressure in the gas pipeline system, stable and safe operation of the Navien Ace gas boiler is possible at a gas pressure of four mbar (40 millimeters of water column);
subject to low incoming water pressure in the water supply system - stable operation of the Navien Ace gas boiler is possible provided that the incoming water pressure drops to 0.3 bar, which allows this gas device to be used in homes
where there is low water pressure in the water supply system, including where there are frequent pressure drops in the water supply system.

Rational design

Navien gas boilers are small in size and light in weight, they are convenient to transport, they are easy to install and there is the possibility of rational use of room space. For ease of installation, the connecting tubes are located on both sides of the device, which greatly simplifies the piping and installation of the Navien Ace gas boiler.

Fuel preheating (KR series)

At low temperatures, the viscosity of the fuel increases, resulting in a waxing effect, which significantly impairs the flammability of diesel fuel

and the operation of the Navien gas boiler becomes unstable. This feature of operation is relevant for regions with harsh climates, therefore arctic and winter diesel fuels were created for these conditions.

Navien gas devices operate on any Russian-made diesel fuel

However, the cost of winter or arctic diesel fuel is much higher than that of summer diesel fuel, and the use of summer fuel is impossible at low temperatures without preheating it.

The heating element, which is built into the burner of the Navien gas unit, preheats it before supplying fuel to the nozzle, resulting in high-quality fuel atomization and uninterrupted ignition. Due to preheating in Navien Ace gas boilers, it is possible to use inexpensive summer diesel fuel

, which leads to significant savings.

Design

1. The heat exchanger is made of stainless steel

Stainless steel is used to produce the heat exchanger, so it is not subject to corrosion

, which significantly extends the life of the Navien Ace boiler.

2. Modern diesel burner

Thanks to a modern, efficient diesel burner, low-noise, stable operation with minimal fuel consumption is ensured. According to the instructions , the burner can work with any diesel fuel

, taking into account all types of fuel produced in the Russian Federation.

3. Fuel filter with replaceable cartridges

The fuel supply system is equipped with a filter to remove unwanted impurities, as a result of which the stable operation of the Navien Ace gas boiler is disrupted. The Navien device comes with additional replacement cartridges.

4. Russified control panel

Using a fully Russified remote control panel equipped with a liquid crystal digital display, it is possible to save fuel consumption and reduce heating costs

, as well as constant maintenance of a comfortable room temperature thanks to the room temperature sensor built into the control panel.

For which rooms is it best suited?

The power of the Navien Ace 24 K boiler is designed for operation in industrial, public or residential premises with an area of up to 240 m2.

There are no specific requirements for premises. The units performed well in difficult conditions, with unstable gas and water supply parameters.

The only condition for high-quality operation of the equipment is the proper installation of the boiler itself and the heating system and an uninterrupted supply of electricity.

Relatively small fluctuations (up to 30) in voltage are not a problem for devices, however, judging by user reviews, the automation cannot cope with fluctuations and requires a stabilizer.

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.

Setting up a Navien gas boiler

Next, we’ll look at how to set up a Navien Deluxe gas boiler with your own hands. Manipulations are carried out using a remote control with a built-in room temperature sensor.

Heating settings

To set the heating mode and set the coolant temperature, hold down the button with the image of a radiator until the same icon appears on the screen. If the “radiator” picture blinks, it means that the set coolant temperature is displayed on the screen. If the symbol does not flash, the actual water heating level is displayed.

Navien wall-mounted gas boilers - model range, pros and cons

How they work and what are the advantages of Navien Ace gas boilers

To set the desired temperature, use the “+” and “-” buttons with the “radiator” icon flashing. The possible range is from 40ºC to 80ºC. Once the temperature is set, it will be automatically saved. The “radiator” icon will blink for a few seconds, after which the actual temperature of the coolant will be displayed on the screen.

Heating with air temperature control

To set the desired air temperature in the room, you need to hold down the “radiator” button until the image “house with thermometer” appears on the screen. It means “Heating with room temperature control” mode.

When the “house with thermometer” symbol is flashing, the desired room temperature is displayed on the screen. When the icon is not flashing, the display shows the actual room temperature.

When the icon is flashing, using the “+” and “-” buttons, the desired level of heating in the room is set, adjustable in the range of 10-40ºC. The temperature is then automatically saved and the icon stops flashing.

Setting the hot water temperature

To set the hot water temperature, you need to hold down the “water tap” button until a similar flashing symbol appears in the right corner. You can then set the desired hot water temperature between 30ºC and 60ºC. The settings will be automatically saved and the “water tap” symbol will stop flashing.

Note! In the “Hot water priority” mode, the water heating temperature is regulated differently. Now let’s look at how to configure the Navien Deluxe gas boiler in the “Hot water priority” mode. To activate it, hold down the “water tap” key until the “faucet and light” symbol appears on the screen.

Now you can set the desired temperature using the “+” and “-” keys. When changing the DHW temperature, the “water tap” icon should flash above the “tap and light” symbol.

To activate it, hold down the “water tap” key until the “faucet and light” symbol appears on the screen. Now you can set the desired temperature using the “+” and “-” keys. When changing the DHW temperature, the “water tap” icon should flash above the “tap and light” symbol.

Now let’s look at how to configure the Navien Deluxe gas boiler in the “Hot water priority” mode. To activate it, hold down the “water tap” key until the “faucet and light” symbol appears on the screen. Now you can set the desired temperature using the “+” and “-” keys. While the DHW temperature is changing, the “water tap” icon should flash above the “tap and light” symbol.

The “Hot water priority” mode involves preparing a supply of water at a given temperature even if it is not in use. It allows you to supply heated water to the consumer a few seconds earlier.

Away Mode

The “Away” mode means the gas boiler operates only for preparing hot water. To switch the unit to this mode, you need to press the button that shows an arrow and a water tap. The “water tap” symbol that appears on the screen means that the “Away from Home” mode is set. The actual temperature in the room is displayed next to it.

Note! This mode is convenient for use in the warm season, when hot water supply is necessary, but there is no need for heating

Setting the Timer mode

The “Timer” mode is necessary to set the time for stopping the operation of the gas boiler within the range from 0 to 12 hours. The unit will work for half an hour, turning off for the specified interval.

To set the “Timer” mode, hold down the “radiator” button until the “clock” symbol appears. When the icon is flashing, use the “+” and “-” keys to set the interval time. The set value is saved, the “clock” stops blinking, and the display shows the actual air temperature.

Navien Deluxe Operating Instructions

After completing the installation work and piping with the in-house engineering systems for water, electricity, hot water supply and the heating circuit, the heating network is pressure tested to ensure there are no leaks.

The unit is filled with water, with a pressure usually up to 2 atm. Filling is carried out at positive outside temperatures. During the process of filling the network, monitor how the automatic air vent works, relieving air plugs.

After filling the boiler, they begin to ignite, before this they check the functionality of the gas equipment and the smoke exhaust system so that the draft in the boiler corresponds to the regime map specified in the factory instructions.

Press the start button, depending on the boiler model, and monitor the operation of the piezo igniter. On the operating panel, the required temperature regime is set for the heating and hot water circuits.

After the Navien boiler reaches operating mode, control the operation of the boiler equipment, pump, fan and burner device. Operation should be virtually silent, the flame should be even and without popping, and flue gases should be completely vented to the atmosphere.

The pressure and temperature of water in the DHW and heating circuits must correspond to the specified mode.

Features of Navien Ace TURBO

Compact arrangement of boiler elements.

The wall-mounted double-circuit boiler is characterized by the following:

application for heating water and heating residential buildings;
the equipment contains a steel heat exchanger coated with anti-corrosion, which significantly reduces the cost of the equipment in comparison with boilers equipped with copper heat exchangers;
Navien Ace gas boiler (operating instructions included with each model) is easy to use;

Wall mounted hardware has brains. This means that the unit ensures that the coolant does not freeze in the heating system pipelines. Automation works in two cases. The first is when the water temperature drops to 10 degrees. At this time the time turns on. The second situation occurs when the coolant temperature is less than 6°C. In this case, the gas burner is turned on, heating the coolant to 21 degrees.

Navien products have positive reviews. This is due to the long period of use and high efficiency of the unit. The equipment is characterized by high fuel and electricity savings. This is facilitated by the presence of turbocharging and an APS sensor, which monitors air pressure.

Installation technology and connection instructions

Installing the boiler is not difficult. Floor samples are simply installed in a designated place, and wall samples are hung on a durable surface using elastic noise-absorbing pads.

It is prohibited to hang boilers on fragile partitions made of plasterboard or other similar material.

The boiler is connected by connecting all necessary communications and power supplies. It is necessary to be careful and carefully monitor the correct connection of the pipelines.

Main attention should be paid to gas pipe connections. Using a soap solution, check for leaks

There are usually no significant problems with the connection, but representatives of service centers insist on involving their specialists in the installation. It is believed that this option allows for proper connection of equipment and eliminates the possibility of errors.

Price range

In most regions of Russia, the cost of Navien Deluxe boilers is in the range of 27-32 thousand rubles. First of all, prices depend on the power of the unit.

In addition, logistics and other factors, overhead costs, etc. are actively involved in pricing. People planning to purchase a boiler should take into account that the total cost will be slightly higher than the price of the unit. This happens because delivery, installation and connection of the device are required.

All these measures should not be carried out independently, since service centers refuse warranty service if the installation was not carried out by their employees.

NOTE! Some stores do not have the authority to draw up a warranty agreement. This point should be clarified, and if necessary, independently conclude a warranty agreement with representatives of the service center.

Advantages and disadvantages of Navien Deluxe

Boilers have been sold on the world market for more than 30 years. They have gained popularity due to their reliability and functionality. The high level of safety of gas equipment is ensured by several protection systems:

From freezing of the heating system, during prolonged shutdown of equipment in the cold season.
From destructive operating modes of the electrical network, during power surges.
From low operating conditions of the gas network.
From emergency operating conditions of the water supply system, when the coolant pressure decreases to 0.1 bar.

The safety group of the Navien boiler contains primary sensors for temperature and pressure, a control pressure gauge and a safety relief valve against excess pressure in the heating circuit. To protect the internal surfaces of water heating from scale, a filter is installed to purify water from hardness salts.

An SMPS chip is built into the electronic board of the boiler control system, which protects the boiler equipment from fluctuations in the network +/- 30% of the normal voltage of 220V.

What's included

The Navien boiler package includes::

Primary and secondary heat exchangers.
Expansion tank 8 l.
Gas heating pad of closed or open type.
Three-way valve with electric motor.
Fan for organizing turbocharging.
Circulation pump.
A sensor system connected to a control board.
Built-in voltage stabilizer.
Remote control.
Housing with external connecting pipes.

Specifications

Modern Navien units are equipped with a remote control panel, which receives a signal from a temperature sensor.

Its readings are instantly transmitted to the control unit chip, which gives a signal to the actuator to increase/decrease the gas flow rate to the double-circuit boiler. Similarly, a command may be received to completely shut down the unit if an emergency situation occurs in its operation.

The most popular modifications of Navien gas boilers are double-circuit wall-mounted units with a closed firebox, a thermal power of 20-24 kW, capable of efficiently heating a room from 160 to 240 m2 and preparing hot water for the domestic needs of a family of 4 people.

Technical characteristics of Navien wall-mounted gas units with a closed combustion chamber:

Navien Deluxe Plus - 20k, heating - 160 m2, maximum/minimum performance - 20/9 kW, expansion tank - 8 l, electric pump - yes, heating + hot water, efficiency - 91.7% gas consumption - 2.15 m3/hour, price - 31,080 rub.
Navien Deluxe Plus - 24k, heating - 192 m2, maximum/minimum performance - 24/9 kW, expansion tank - 7.5 l, electric pump - yes, heating + DHW, efficiency -90.5%, heat exchanger - steel, gas consumption - 2.58 m3/ hour, price - 31,230 rub.
Navien Deluxe Plus -24k COAXIAL, power 24 kW, heating - 240 m2, maximum/minimum performance - 24/9 kW, expansion tank - yes, electric pump - yes, heating + hot water, efficiency - 90.5%, heat exchanger - steel, gas consumption — 2.58 m3/hour, price — 28,500 rub.
Navien ACE-20AN, heating -190 m2, natural combustion, maximum/minimum performance - 20/9 kW, expansion tank - yes, electric pump - yes, heating + hot water, efficiency - 91%, heat exchanger - plate, gas flow - 2.06 m3 /hour, price - 29,130 rub.
Navien Deluxe - 20k White, heating - 186 m2, maximum/minimum performance - 20/9 kW, expansion tank - yes, electric pump - yes, heating + hot water, efficiency - 90.5%, heat exchanger - steel, gas consumption - 2.15 m3/hour , price — 32,160 rub.
Navien Deluxe - 24k White, heating - 220 m2, maximum/minimum performance - 24/9 kW, expansion tank - yes, electric pump - yes, heating + hot water, efficiency - 91.5%, heat exchanger - steel, gas consumption - 2.58 m3/hour , price — 29,980 rub.
Navien Deluxe-20k COAXIAL White, heating - 190 m2, maximum/minimum performance - 20/9 kW, expansion tank - yes, electric pump - yes, heating + hot water, efficiency - 90.5%, heat exchanger - steel, gas consumption - 2.15 m3/ hour, price - 32,160 rub.
Navien Deluxe-24k COAXIAL White, heating - 220 m2, maximum/minimum performance - 24/9 kW, expansion tank - yes, electric pump - yes, heating + hot water supply, efficiency - 90.5%, heat exchanger - steel, gas flow - 2.15 m3/ hour, price - 29,090 rub.
Navien SmartTok - 24K, heating - 220 m2, maximum/minimum performance - 24/9 kW, expansion tank - yes, electric pump - yes, heating + hot water, efficiency - 91.0%, heat exchanger - steel, gas consumption - 2.6 m3/hour, price — 34,430 rub.
Navien Deluxe S COAXIAL-24k, heating - 200 m2, maximum/minimum performance - 24/9 kW, expansion tank - yes, electric pump - yes, heating + hot water supply, efficiency - 91.2%, heat exchanger - steel, gas consumption - 2.58 m3/ hour, price - 31,060 rub.

Characteristics of the Navien Ace line of wall heating devices

A wall-mounted, double-circuit gas heating device from the manufacturer Navien, belonging to the Ace line, is represented by the following models: Navien Ace ATMO, Navien Ace TURBO. Moreover, the latest model is presented on the market in two modifications – Korea and Coaxial.

The Navien Ace wall-mounted boiler, regardless of modification, has a power from 13 kW to 40 kW, which allows the equipment of this manufacturer to be placed in rooms of various sizes.

Features and characteristics of Navien Ace TURBO

The Navien Ace gas wall-mounted boiler can be placed in rooms of any size.

The manufacturer claims that Navien Ace TURBO boilers are ideal for use in domestic conditions. They can operate at low gas pressure in the pipes, significant voltage surges, and retain their functionality even when they are left unplugged for a long time and the coolant in the heating system begins to cool.

In addition, wall-mounted dual-circuit heating elements, Navien Ace TURBO, have other characteristics:

this is a double-circuit unit, that is, it is suitable for heating a room and for preparing hot water for domestic purposes;
The double-circuit heating device has a steel heat exchanger with a protective anti-corrosion coating. Its cost is several times lower compared to copper analogues. And the insufficient boiler power due to the reduced thermal conductivity of steel is compensated by turbocharging of the gas burner. Today, Navien Ace TURBO can compete in power with devices that have a copper heat exchanger;
This gas wall heating element ensures that the coolant in the heating system does not freeze. So, when the water temperature in the heating system drops to +10°C, the boilers immediately turn on the circulation pump. By distilling water through the heating system, it prevents the formation of ice crystals. If the coolant temperature drops below +6°C, the gas burner is turned on. It heats the water in the heating system to +21°C;
Navien Ace TURBO gas heating units are characterized by economical energy consumption. This is due to the synchronous operation of the turbocharging system and the APS (Air Pressure System) air pressure sensor. The boilers use a pressure sensor to control the rotation speed of the fan under the burner, thereby mixing the gas in optimal proportions with air, which allows the energy carrier to be completely oxidized. Consequently, the efficiency of the equipment increases, but the gas consumption does not increase;
These boilers have a long service life, thanks to a reduction in the number of on/off cycles in the event of power surges and low water pressure in the system. Thus, double-circuit boilers will continue to operate if the voltage drops by 30% from 230 V. They will not turn off if the water pressure is 0.1 bar, which is important for houses with autonomous water supply.

Navien double-circuit boilers have two modifications. The Navien Ace TURBO Coaxial gas unit has a coaxial chimney. It is useful for those rooms in which it is difficult to ensure air flow for the boiler. That is, the coaxial chimney takes air for the combustion reaction from outside the building. Korea boilers take air from the room. They work silently.

Features and characteristics of Navien Ace ATMO

Navien Ace ATMO gas boilers operate even at low voltage.

The Navien company has developed double-circuit heating boilers that run on gas, but with an open combustion chamber, that is, without turbocharging. These are Navien Ace ATMO boilers. They feature the same functionality as turbocharged models. This is an adaptation to domestic operating conditions.

These heating boilers have the same chip, which ensures their constant operation at low voltage and system pressure. Gas equipment is equipped with a steel heat exchanger. A double-circuit boiler makes it possible to prepare hot water for domestic needs. However, the open combustion chamber ensures quiet operation, unlike turbocharged boilers.

Range

The assortment of the South Korean company Navien is constantly expanding, which allows customers to purchase gas boilers that are optimally suited in all respects.
Therefore, it is impossible to talk about all representatives of the model range. Instead, we will look at Navien equipment, which can be divided into three broad categories.

Wall models. Wall-mounted boilers have a double heat exchanger and are labeled as Ace, Deluxe. Deluxe are dual-circuit models that have a wide power range from 13 to 40 kW. All Deluxe series boilers are turbocharged. Turbocharged Deluxe equipment can have a coaxial or separate chimney. In addition to Deluxe, the Ace series of wall models is in great demand. The Ace series is divided into Turbo and Atmo. The difference between them is that Turbos are fully adapted for operation in conditions of non-steel gas and electricity supply to the boiler. An additional advantage of Ace Turbo is frost protection and burner turbocharging. If we talk about Atmo, then this is a classic gas boiler that perfectly provides heating for a private home. Atmo has all the strengths of the Turbo, except for the turbocharging of the burner.
Floor-standing boilers from Navien. If wall-mounted models do not suit you for one reason or another, floor-standing models have earned excellent reviews. They are used for heating and hot water supply of private houses. The distinctive features of floor-standing models of Navien boilers include their compact size, ease of operation and convenient installation. Each boiler is supplied with instructions, according to which even a novice in such matters can carry out the installation. Wall-mounted models are somewhat easier to install, although there are no problems with them. A double heat exchanger significantly increases the efficiency of heat generation in a gas boiler.
Condensation. Deluxe, Ace and other models of the Navien company recently received a serious competitor in the form of South Korean condensing boilers. They are marked NCN. Their distinctive feature is increased power, the range of which is 19.6-37.9 kW. These boilers use fuel efficiently, using less fuel but providing higher quality heating. The efficiency of Navien condensing-type boilers reaches 108 percent. This was made possible by using the heat that is released when steam condenses. This way, consumers save money on gas bills, but heat their own homes more efficiently. The heat exchanger here is slightly different. Its design is unique and is distinguished by the presence of a system for preliminary creation of a combustible mixture. The burners are necessarily modulating, the range of operation of which is amazing.

By choosing boilers from the Navien company from the Deluxe, Ace or other ranges, you are buying quality and reliability. This is one of the few cases where the manufacturer does not demand more just for the brand. The high level of Navien boilers is beyond doubt.

Starting the boiler

After all installation work has been completed and pressure testing has been carried out, the first commissioning start-up of the boiler equipment is carried out. All work is carried out by service center workers with the preparation of appropriate documents, which in the future will preserve the manufacturer’s warranty obligations.

When starting the Navien boiler, the instructions must be followed impeccably. Sequence of work:

The circuits are filled with water through the unit’s make-up unit, built into the structure, with a special tap at the bottom next to the tap water inlet.
Monitor the pressure gauge; when the pressure rises to 2.0 atm, close the tap.
Remove air pockets. At the first start, it is performed in manual mode, and at subsequent starts, through an automatic system. They start the process from the most distant battery, opening the Mayevsky tap, and alternately go through all the points of the heating circuit.
After etching the air plug, the pressure in the circuit will drop, so re-filling will be required.
Discharge the air mixture from the circulation pump.
To turn on the unit, press the “Power” button.
The electric ignition will work and the unit will start, after which it is necessary to adjust the temperature regime.

Advantages and disadvantages of Navien Deluxe

From freezing of the heating system, during prolonged shutdown of equipment in the cold season.
From destructive operating modes of the electrical network, during power surges.
From low operating conditions of the gas network.
From emergency operating conditions of the water supply system, when the coolant pressure decreases to 0.1 bar.

An SMPS chip is built into the electronic board of the boiler control system, which protects the boiler equipment from fluctuations in the network +/- 30% of the normal voltage of 220V.
Date: September 25, 2021

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.