Immergas gas boilers: wall-mounted, floor-mounted, possible malfunctions and design

Home » Classification of gas boilers » Operating principles » Setting the modes of the Immergaz gas boiler

Heating equipment made in Italy by Immergas has long been known on the Russian market. It includes modern technologies and has the ability to connect other auxiliary devices, for example, a room thermostat or an outdoor programmer. Setting up a gas boiler Immergaz allows you to control the operation of the unit in two modes: via the remote control or using a panel located on the body.

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1 Turning on the gas boiler
2 Setting the unit power
3 Programming settings
4 Other gas boiler settings

Wall-mounted gas boiler IMMERGAS. Model overview

Gas boilers IMMERGAS – two hundred heating horses, says the company slogan.
The company located its production facilities in Italy and over 50 years they have gained trust, respect, and recognition of quality, predetermining exclusively positive feedback from their consumers. The north of Italy has long been famous for technical innovation in all areas of industrial production. The largest company on the European market, specializing in the production of wall-mounted gas boilers under the world-famous Immergas brand, was no exception.

Using only the latest technologies and modern design in its developments, the Immergaz gas boiler is distinguished by its reliability and high quality. The company is so confident in its products that it provides an unprecedented extended warranty of 5 years!

By offering the Immergaz gas boiler to the modern heating market, the company took care of expanding the range of equipment so that the boilers can be used not only in residential buildings, but also in industrial facilities, offering mini boiler rooms for large areas.

Our review is devoted to wall-mounted modifications of boilers called NIKE STAR 24 3 R, NIKE MYTHOS 24 3R, and EOLO STAR 24 3R - which have become bestsellers on the domestic market. Let's consider their features, principles of operation, technical characteristics. Let’s try to create our own opinion about the advantages of the engineering solutions of Immergaz specialists, talk and leave feedback on possible disadvantages.

Neutral reviews

Advantages:

works well so far

Flaws:

broke down, then at least we were crying without heat for a week until the repairman arrived

A comment:

The boiler worked for 5 years and the control board burned out; the board costs 100 USD without warranty. and work 50 b.r. new, but the warranty on the new board is only half a year, which is very upsetting. Another big minus is that no one undertakes to repair this boiler except for one single monopolist company and the local gas networks (whose professionalism is doubtful).

repair is problematic

Advantages:

silent

Flaws:

consumes gas excessively, heats water unevenly

Thunderstorm, power surge (there is a stabilizer) and repairs for 11 thousand rubles. The master said the board is burning out... all over Vladikavkaz... Just a holiday for the “Giraffe”... it’s never possible to swim at a normal pace. the water is either boiling water or cold... (especially pleasing when you are in foam) The pressure drops constantly... I almost didn’t follow it... cold...

User manual

Beretta boilers are operated automatically, which does not require constant human intervention.

The user is only required to adjust the heating mode according to his own feelings, switch the boiler to winter or summer mode (turning off or starting the heating circuit), maintaining the cleanliness of the body and periodic maintenance (by service workers).

All serious problems can only be solved by calling a specialist - eliminating constantly occurring errors or incomprehensible phenomena that occur with the boiler in operating mode.

In addition, the user independently fills the system with water (or recharges as necessary).

The process consists of supplying liquid through the make-up tap and filling the system until the water pressure reaches 1-1.5 Bar. This is below the operating pressure, but when heated, the water will expand and due to the increase in volume, the pressure will reach the desired value.

The boiler starts automatically when the required temperature of the coolant in the system is set.

It is prohibited to pour water into a hot boiler due to the risk of destroying the heat exchanger. It is necessary to wait until the boiler cools down and only then add water.

Specifications

Let's consider the technical parameters of gas units from Immergas:

Characteristics	Values
Boiler type	Gas heating
Heat transfer type	Convection or condensation
type of instalation	Floor or wall
Type of fuel	Natural, optionally liquefied gas
Functions	Heating, hot water supply
Combustion chamber type	Atmospheric or turbocharged
Thermal power	18-120 kW
Efficiency	89 -107%
Gas consumption at maximum boiler power	12.07 m3/h
Coolant temperature	35-85°
DHW temperature	30-60°
Diameter of coaxial chimney	250-310 mm
Chimney length	330-800 mm
Water pressure in the system nom/max	1.5/2 Bar
Power supply	220 V 50 Hz

Classification

Gas boilers for heating private houses Immergas are divided into double-circuit and single-circuit. The design of such models includes a built-in piping with safety valves, circulation pumps and expansion tanks. Some gas boilers are equipped with built-in tanks for storing heated water. Some Immergaz gas double-circuit boilers are equipped with a unique system that regulates the pump rotation speed through frequency modulation, which reduces gas consumption for the heating system.

Condensing models of Immergaz boilers are divided into two types - floor-mounted and wall-mounted. The devices are characterized by a high level of efficiency and a 10-15% reduction in heating costs. All boilers are included in five model lines.

A wide range of gas boilers for heating a private home from the Immergas brand is presented in models equipped with different heat exchangers - classic copper, cast iron and stainless steel. The ARES series is equipped with cast iron heat exchangers.

Immergaz gas boilers are also equipped with:

Automation that regulates the microclimate in the room depending on the ambient temperature.
Independent heating circuits.
Superior automatic system, facilitating boiler control.
Heat exchangers of increased volume, resistant to clogging.
Remote control systems.

Flue gases are removed naturally through classic chimneys or forced through coaxial chimneys.

In the review of Immergaz gas boilers, it is worth noting that the company’s products are fully adapted to Russian operating conditions and remain operational when the pressure of water and gas changes.

How to set up a boiler correctly

The Immergas boiler is configured in service mode. It is performed during the first launch or after repair work .

All gas boilers undergo bench testing and adjustment at the enterprise, so before starting they only adjust the basic parameters of the unit to obtain maximum efficiency under the existing conditions and reduce fuel consumption.

Usually customized:

DHW and DHW temperatures (upper and lower limits).
Gas pressure (upper and lower limits corresponding to the supply mode in the main).
DHW and DHW pressure in the respective circuits.

Special boiler power settings are made mechanically on the gas valve. The maximum and minimum levels are set, forming the range of operating parameters of the unit.

On the control panel, only the maximum power of the heating mode is adjusted, for which you enter the service menu and set the required values.

Features of the brand and product range

The assembly of Immergaz wall-mounted gas boilers takes place at several factories: the main production is located in Italian territory, and additional production is in Slovakia, where the equipment is assembled. Information about this can be read on the manufacturer’s official website.

Now in Western European countries it is allowed to install only condensing units, so many companies, because of this feature, have transferred the production of their own traditional boilers to Slovakia.

The Russian market offers the following devices of this brand:

condensation;
classic.

The first type of boilers was not widespread among Russian buyers due to its own high cost and cheap gas in our country. Because, as you know, the main advantage of condensing units lies precisely in saving natural gas by 20-30%, and in European territory it is much more expensive than in Russia. Therefore, in our case, it is better to consider classic Immergas gas boilers, which are divided into:

units with one circuit (for heating only);
with two circuits (heating and hot water heating);
with one circuit + built-in boiler for 45 or 60 liters.

Single-circuit gas boilers of the Eolo Mini X 3E and Nike Mini X 3E lines are intended only for equipping rooms with heat, but their price is not much lower than for 2-circuit ones, which is why Immergaz double-circuit gas boilers, which combine advantages of a heating boiler and heating column. All models with one circuit can be connected to an indirect heating boiler to heat water for domestic needs.

Gas boiler IMMERGAS EOLO STAR 24 4E

The manufacturer's equipment is also produced:

With a closed combustion chamber (turbine units with forced ventilation).
With an open type chamber (natural draft).

The Immergas gas boiler with a closed combustion chamber “Eolo” is produced in the following options:

“Mini” line with two heat exchangers for heating and preheating liquids;
“Star” line only with a bithermic heat exchanger for two circuits.

Units with an open combustion chamber are produced with the “Nike” marking:

“Mini” 24 E series with a pair of separate heat exchangers and a power of 24 kW;
“Star” 24 3R series with a biothermal copper heat exchanger and the same power characteristics.

Gas boiler Immergaz NIKE Mini 24 E: technical characteristics
Heating power, kW	24
Recommended area, m²	240
Natural gas consumption, m³/hour	2.77
Liquefied gas consumption, kg/hour	2.03
Efficiency, %	91
Power consumption, kW/h	0.1
Height, cm	78.5
Width, cm	44
Depth, cm	24
Weight, kg	25.5
Chimney diameter, mm	130
Expansion tank volume, l	4

Gas boiler Immergaz NIKE Star 24 3R: technical characteristics
Heating power, kW	24
Recommended area, m²	240
Natural gas consumption, m³/hour	2.7
Liquefied gas consumption, kg/hour	1.98
Efficiency, %	93
Power consumption, kW/h	0.1
Height, cm	75
Width, cm	44
Depth, cm	24
Weight, kg	30

All double-circuit wall-mounted gas boilers Immergaz can be modified. To operate on bottled gas, you need to install special nozzles (purchased separately).

https://youtube.com/watch?v=vI27OEc8jlg

It would also be fair to mention the floor-standing units of the Hercules series from the Italian manufacturer. The model has a condensing module for greater performance (maximum 32 kW). However, the boiler is characterized by economical fuel consumption, so the equipment will pay for itself to the owner within 2-3 heating seasons. If desired, additionally purchased:

indirect heating storage boiler;
room thermostats, sensors that read the temperature in the atmosphere and adjust the operation of the unit accordingly.

Connection

Diameter of coaxial chimney 60/100 mm Connection of a separate chimney (diameter 80 mm) yes Dimensions (WxHxD) 440x756x240 mm Weight 29 kg Before purchasing, check the technical specifications and equipment with the seller <header>

Manufacturers

102EVAN
99Lemax
75Protherm
72MORA-TOP
67Baxi
50Navien
44ZOTA
40Buderus
40Ariston
28Vaillant
28Viessmann
26Kentatsu
26Kiturami
25Teplodar
24Pechkin
24ZhMZ
23Ferroli
23Bosch
19Electrolux
17Oasis
14Borinskoe
14Haier
13Beretta
12RusNIT
12Wattek
11Siberia
10Conord
10Stropuva
10Teplotech
9Immergas
9Hearth
9Kospel
9Elektromash
8Wespe Heizung
8Leberg
8Rinnai
8Arderia
8Savitr
7Roda
7NMK
7Ural-Mikmah-Term
6Daewoo
6Rostovgazoapparat
6Dzenzelevsky Boiler Plant
6Zerten
6Master Gas
6Federica Bugatti
6Mr. Heat
6Karakan
5Elsotherm
5Alvin
5Wolf
5Rilano
5TRAYAN
5Sirius
5Mimax
5Koreastar
5FACI
5Reco
5Mizudo
4Sime
4Bourgeois-K
4ATON
4Viadrus
4BaltGaz
4Alphatherm
4Fondital
4Tiberis
4Stoker
4Bauertherm
4Geyser
4Dozatech
4Neva Lux
4Intois
3Saturn-heat
3Rugas
3Territory of heat
3Thermotrust
3Baltur
3Galan
3De Dietrich
3Olympia
3UralProm
3STOUT
3TMF
3Signal-Teplotechnika
3Electrovel
2Unilux
2Maxi-life
2MOST
2Atmos
2Northerner
2Kostrzewa
2Pelletron
2Keber
2Lavoro
2Termofor
2Thermona
2ROC
2Chaffoteaux
2Burnit
2Alpine Air
2Froling
2Zharstal
2Gazlux
2Siberian master
2GREIVARI
2ERDO
2KAZ
2VIRA
2Nova Florida
2Yaik
2MOZYRSELMASH
2Unical
2HydroSta
2Tenko
2SAKOVICH
2Lavoro Eco
2Resource
1Celtic-Rus
1Innovita
1Verpat
1Pereko
1Atem
1Metal-Fach
1Parpol
1Vesuvius
1ThermoStyle
1Flames
1CAMPFIRE
1Heiztechnik
1Alpenhoff
1TEPLOV
1Italtherm
1Royal Thermo
1BIASI
1Thermex

The boiler does not turn on - there is no indication

Almost all modern gas boilers are equipped with a control board and an information panel with a liquid crystal display or LED indicators. If there is no indication, first of all you need to make sure that power is supplied to the boiler. Typically, the electrical connection of the boiler is carried out through a separate “automatic machine” - check whether it is turned on or not.

The surest way to make sure that power is supplied to the boiler is to check with a multimeter in voltmeter mode the presence of 220V at the connection point to the boiler board. If there is no voltage, it is necessary to localize and eliminate the problem. In real life, it happens that someone in the household simply pulls the plug from the socket.

Safety fuses

It is also worth paying attention to the location of the fuses. In some boilers, depending on the model (for example, Ariston, Buderus, Vaillant), the fuses are located on the board itself, and in some, before they are connected to the board

If there are no problems with the electrical connection to the boiler, you should check the integrity of the fuses (with the same multitester in the “continuity” mode).

If the fuses are intact and there is 220 volts at the control points, it is likely that the boiler does not turn on due to a malfunction of the control electronics.

If during the inspection it turns out that the fuses have blown, then there was at least a problem with the power supply. In this case, it would be correct to first conduct research on the actuators (fan, pump, priority valve) and boiler wiring for a short circuit. However, in practice, even representatives of specialized organizations simply replace the fuses with good ones and check the boiler in operation. If the fuses blow again, then sequentially turn off the high-voltage parts of the boiler to identify the problem area (this is not a recommendation for action! This approach is not entirely correct).

Several spare fuses are usually supplied with the boiler.

If the fuses blow due to damage to one of the actuators, it must be replaced (or the cause of the short circuit must be eliminated). In the case where it is proven that the mechanisms (and wiring) are in good working order, the control board itself remains. Blown fuses indicate that there was an unacceptable load on the electronics (thunderstorm, pulsed power surge in the network), so the cause of the malfunction may also be a short circuit on the board itself.

Water (moisture) getting on the board

Water ingress is one of the most unpleasant situations. Although the board is in a protective case, water may get inside due to leakage or condensation. Often it gets into the box through the wires. Water ingress almost always causes damage to the board, in most cases irreparable. Characteristic stains and oxidation will be visible on the board due to water.

Varistor and power supply

Often, if the boiler board is damaged, burnt or charred elements can be visually detected on it. A varistor is a protective element of the board that is installed at the input of the circuit. In most cases, this is a blue round part (but not necessarily). When the rated load is exceeded, the varistor is destroyed and opens the circuit. In some cases, if the varistor helped prevent damage to the electronics, it is enough to bite it out to eliminate the gap in the circuit

Important! Although the board circuit will work without a varistor, it should be remembered that the varistor is a protective device and the correct solution would be to replace it. The power supply is a microcircuit that is also damaged primarily during pulsed power surges or during a thunderstorm

If cracks or damage are visible, the boiler board will likely need to be diagnosed and repaired.

Display board

For some boiler models (Vaillant, Ariston, Navien), the control unit consists of a main board and an information board (display board). The boiler may also not turn on if the display board is broken. The display board, unlike the main one, is cheaper, but most often cannot be repaired. In this case, the fault can only be identified by replacing a known good part.

If the gas boiler is working, there is an indication on the display, but it does not start or produces errors, further diagnostics are required.

Reviews of Immergas Eolo Mythos 24 2

Write a reviewEduard, 03/11/2021

Advantages: There are no advantages.

Disadvantages: After four years of operation, I replaced the heat exchanger and now I will have to change the board.

Comment: The boiler is very bad. Don't mess around.

Nikolay Bolotov, 10/24/2020

Pros: Reliable and quiet

Disadvantages: a little expensive

Comment: I bought it on the advice of friends after a Korean boiler that kept breaking down. For 5 years it has never caused any problems, and it has never been serviced. Makes water comfortable. When I bought it, it seemed a little expensive compared to the Korean one. But as it turned out in the end, it was worth it.

Stas Sotnikov, 10.15.2020

Pros: Reliable and very quiet

Disadvantages: none found

Comment: Makes water comfortably, without jumps. It works very quietly, installed in the kitchen, no louder than a refrigerator. It works in tandem with a room thermostat, operation at room temperature is very comfortable. Simple control of the boiler itself, everything is intuitive, made for people. The longest warranty of all the boilers I have found is 3 years.

Tolobistyuk Dima, 10/01/2017

Pros: Not good yet, but it works.

Disadvantages: It leaks air through the nipple.

Comment: I bought an apartment in a new building with this boiler. After a year, he refused to heat hot water. I called the developer, who contacted the supplier. The supplier said that I had not undergone annual maintenance and sent me away with the guarantee. I was not warned about maintenance when handing over the apartment. In short, I had to figure it out myself. It turned out to be a bad electrical contact on the 3-way valve. It also leaks air through the nipple of the expansion tank. You have to constantly pump it up. The nipple does not unscrew at all. There was also a constant overheating error. I had to adjust the gas regulator several times. I don’t know why this was not configured initially or why this setting gets lost. In short, if you want to constantly tweak and finish something, then this boiler is for you.

Alexander Egorov, 11/29/2016

Pros: I can't highlight anything.

Disadvantages: Flame modulation for heating does not work.

Comment: Flame modulation on heating does not work. When turned on, the beginning of one sign lights up, then the second, the third blinks immediately goes out and continues to work on the second icon. When the temperature rises, the flame does not decrease until it turns off. What I also didn’t like was that all the pipes were mixed, not like on other boilers. When replacing the boiler, all the pipes had to be redone. In short, I don’t recommend it to anyone.

Brief information about the design of the heating system

Modern gas heating systems are complex systems. Their operation is monitored using a whole range of automatic devices, which you need to become familiar with before you begin repairing gas boilers yourself.

Basic elements of a security group:

Draft sensors designed for 75 0 C. This device makes it possible to monitor the condition of the chimney. If normal smoke removal fails, the temperature rises and the sensor is triggered. Optimally, in addition to the traction sensor, a gas alarm is purchased.
The monostat protects turbocharged gas units from poor removal of combustion products due to a clogged chimney or heat exchanger.
The limit thermostat is designed to control the temperature of the coolant in a heating installation. When the water boils, the overheating sensor turns off the device.
The flame control electrode, when detecting its absence, turns off the operation of the heating unit.
The blast valve serves to control the pressure. When the pressure rises above a critical value, excess coolant is discharged in batches.

Peculiarities

The “Immergas Nike Mythos 24 3 R” model has the following overall dimensions - 440x751x240 mm (WxHxD), while the weight is 24.2 kg. It is mounted on the wall, which is convenient and saves space in the room.

Operating principle and main parameters. The convection type of device involves the generation of heat by combustion of gas, while the boiler operates on natural gas (methane, flow rate 2.78 cubic meters per hour) and liquefied gas (propane-butane mixture, flow rate 2.08 kg/hour).

To obtain the declared power of 23.6 kW, the natural gas pressure must be at 20 mbar, and the permissible liquefied gas pressure must be 37 mbar; when these parameters decrease, the thermal power will also drop. ExpertKotel.ru reminds that most often in domestic networks the pressure is 12-20 mbar. The efficiency of the installation, with these indicators, is at a good level and amounts to 89.8%.

Heating of water and coolant in pipes. This boiler is capable of producing 11.1 l/min of hot water (t=30°C). The coolant temperature is 38-85°C, and in the hot water supply circuit, respectively, 30-60°C.

The expansion tank compensates for the expansion of the coolant in the pipes during heating and releases it back into the system when cooling. This maintains constant pressure in the circuit.

The circulation pump is designed to circulate coolant (water, antifreeze) through the heating circuit; it is a mandatory component of a closed-type heating system; in our case, the pump is included.

Fuel economy

Automatic ignition (Electric ignition) allows the Immergas Nike Mythos 24 3 R to start and extinguish the burner if necessary by the algorithm, which saves fuel.

Modulation of the burner flame smoothly regulates the intensity of the fuel supply and decreases or increases the flame, and this reduces gas consumption.

Gas consumptionValueNatural Liquefied

2.78 cu. m/hour

2.08 kg/hour

Management and control

The gas boiler “Immergas Nike Mythos 24 3 R” is electronically controlled, equipped with a display and has a port for connecting additional devices (usually programmers, thermostats, room remote controls, etc.). The advantage of the electronic system is that it does not require the constant presence of a person and can significantly save fuel (as described above), the disadvantage is that it is more complex than a mechanical one and depends on voltage drops (it can fail during surges).

Thermometer and pressure gauge. A thermometer is necessary to control the temperature of the coolant in the boiler, and a pressure gauge shows the pressure of the coolant; this is an important parameter, because exceeding it can lead to breakdown of individual parts or the system as a whole.

Protection systems

Gas control is a useful and necessary function of the burner; if the flame goes out for any reason, it stops the gas supply automatically.

The “Immergas Nike Mythos 24 3 R” safety valve stabilizes the water pressure in the circuit when an unsafe limit is reached.

Protection against freezing of the coolant automatically turns on the burner for a short time when the water temperature drops to a critical level and there is a risk of heating defrosting. It is worth remembering that for this there must be gas and electricity.

Protection against overheating of the coolant turns off the burner if an abnormal water temperature value is detected.

Protection against pump blocking is activated when the boiler installation is idle for a long time; in this case, the pump turns on for a while and turns itself off. This is necessary in summer when the heating circuit is not activated.

Connection

The size for connecting the gas pipe is 3/4″.
Hot water supply - 1/2″.
To connect the heating circuit - 3/4″.

For power supply, a 220 volt network with a pure sine wave and grounding is required.

Autonomous operation

When using an uninterruptible power supply, the “Immergas Nike Mythos 24 3 R” will function even with the electricity turned off (example in the table below). This is useful when it is necessary to prevent defrosting in winter, or simply to maintain heat and hot water supply.

Why does the pressure in the boiler drop?

The main reason for the pressure drop is coolant leakage.

Various reasons may be involved here:

The boiler drain valve or one of the system radiators is open. If this happens, the coolant is constantly removed from the system, which causes a drop in pressure. The solution to the problem is obvious - close the tap, or repair it.
A leak has appeared and the coolant is leaking into it. This case is much more difficult, since the leak cannot be detected immediately. Sometimes it is found only by wet spots on the floor or ceiling of neighbors. A detected leak is immediately eliminated by replacing the pipeline or the problematic radiator.
Failure of the expansion tank membrane. In such a situation, the pressure drop continues only until the entire volume of the tank is completely filled with liquid. After this, the pressure stabilizes for a short time and then begins to increase to a critical value. These signs are usually used to identify the problem. The solution is to replace the expansion tank (or repair it if possible).

Problem solving

Let's look at ways to solve the most common problems:

01. This error was discussed above and is a consequence of gas supply failures or incorrect power connections.
03. Problem with the smoke exhaust sensor or thermostat. Check the functionality and connection; in difficult cases, replace the sensor.
04. Lack of standard load resistance at the terminals. Clean the contacts and check the connecting wires.
10. The heating circuit pressure has dropped. The error indicates a lack of coolant, the need to replenish the system and eliminate leaks.
11. Problems with the smoke pressure thermostat. Check the operation of the fan or the condition of the chimney.
27. Low circulation rate. The condition of the circulation pump should be checked. Particular attention should be paid to the impeller blades, which are made of plastic and can fail.
28. Leakage in the DHW circuit. Check the taps, connections, inspect the water taps - perhaps a tap has been left open somewhere. You should also pay attention to kitchen or plumbing fixtures connected to the hot water supply - perhaps the cause of the leak lies there.
31. Incompatibility or failure of the electronic control board. The culprit here could be either a software failure that requires reflashing the board, or a purely mechanical failure, burnout of microcircuits due to a power surge, etc. Replacing the control board is an expensive procedure, so you should protect it as much as possible from external influences (install a voltage stabilizer) .

history of the company

The company began its existence in 1964. In 1965, the company developed and produced its first gas boiler. Since 1967, having received the first patent, the Immergas company begins to gradually develop and expand. Here are the company's main milestones:

Since the mid-70s, the company has focused on the production of household units for heating residential premises. The first model with a built-in water heater tank goes on sale.
In the 80s, a wall-mounted model of a boiler with a boiler was developed and produced.
Since 1994, the Immergas brand entered the world market, where it successfully gained a foothold. All over the world, Immergas wall-mounted boilers have positive consumer reviews.

In 2000, the company relied on innovative energy-saving technologies and developed condensing heating equipment. Such equipment is very environmentally friendly and economical.
Following the development and introduction of condensing boilers, Immergas focused its potential on hybrid systems capable of supporting a complete cycle of cooling, heating and hot water production for an entire house.

How to clean the heat exchanger

Beretta boilers are equipped with either separate or bithermal (combined) heat exchangers. In the first case, flushing gives a greater effect; the second type of heat exchangers is difficult to flush due to the design features.

There are two washing methods:

Mechanical. Requires disconnecting the heat exchanger from the boiler. The results of such washing are not particularly successful, since it is extremely difficult to clean the internal surfaces mechanically.
Chemical. Does not require dismantling the heat exchanger, but is done using a special device. It has a fairly high efficiency, is able to eliminate scale and extend the service life of the unit.

For washing, special reagents are used to dissolve scale and remove it from the internal cavity of the heat exchanger tubes. The procedure should be performed every 2-3 years, depending on the quality of the water. To carry out the work, you must invite a specialist from the service center.

Device

Design Features:

All modifications are equipped with Grundfos circulation pumps (Denmark) - they ensure the movement of the coolant, and a SIT gas valve (Italy).
Supply pipes (gas and water) are copper.
There is a 6 liter expansion tank.
Equipped with a digital screen that displays the set settings - the user can monitor temperature, pressure, winter/summer mode. It also displays error codes to notify the user of malfunctions.
All modifications have NTS temperature sensors, traction sensors and overheating protection.
If desired, an external thermostat can be connected, a simple mechanical one or an “intelligent” one, which allows you to program the operating mode for a week in advance.

All models are equipped with:

anti-blocking pump;
anti-blocking three-way valve;
frost protection.

The operating principle of Immergas boilers is quite simple, and their operation does not require special knowledge. The display shows all information about settings and errors.

Repair and operation

Many modifications of boilers have an LCD screen; error codes are always displayed on it if they occur. The codes can be quickly deciphered by simply looking at the instructions included with the specific gas unit.

Fault code 16, which means the fan does not turn on, indicates that the circuit is open. To do the repair yourself, you need to diagnose the fan, subsequently repair the circuit, and routinely tighten the contacts, and then all problems with the boiler will be solved.

To do this, press the Reset key. This happens after a long period of equipment downtime. All that remains is to bleed excess air from the system and restart the ignition.

If you need to switch your boiler to summer mode, then press the button with the image of an umbrella and set the most comfortable temperature for yourself. If it suddenly becomes cool and there is a need for heating, then simply turn on the winter mode - the icon with a snowman. And also select the desired coolant temperature.

Video review of the Immergas gas boiler, see the following video.

Advantages and disadvantages

The advantages of Immergas gas boilers include:

High quality manufacturing and assembly of gas boilers.
Compliance with all requirements, availability of necessary certificates.
Wide range of functionality, availability of all modern designs.
Reliability, stability, ability to maintain a given heating mode in difficult conditions.
Adaptation to the technological conditions of the operating country.
Attractive appearance, compact.
Quiet, easy to control.

The disadvantages of Immergas boilers are:

Energy dependence. Boilers require the connection of an external voltage stabilizer, the mandatory presence of properly performed grounding, the phase must be connected to the appropriate electrode.
High sensitivity to water quality. The use of softening filters is highly recommended.
Expensiveness of boilers.
Low level of training of specialists of guarantee organizations.

IMPORTANT! The disadvantages of Immergas boilers are equally characteristic of the vast majority of models of gas units from other manufacturers.

And more about malfunctions

Most modern gas boilers are equipped with a diagnostic system that independently detects any malfunction and displays its code on a digital display. This is a good hint for the owner. The boiler kit usually comes with instructions that explain the error codes. If I look into it, the owner will quickly understand what the problem is and also determine possible ways to eliminate it.

Different models have differences in diagnosing breakdowns; for example, a Supermaster gas boiler indicates possible faults by flashing a red light. Judging by reviews from owners, each modification has its own set of common problems. For a Weiland gas boiler, possible malfunctions are mainly as follows: lack of water, the unit does not start, the burner flame goes out, there is not enough water pressure.

You should always remember that preventing a breakdown is better than repairing it. You shouldn’t wait for the boiler to fail at the most inopportune moment. It is better to prevent this: clean and change filters in a timely manner, check the draft in the chimney, make adjustments according to the instructions, and promptly eliminate minor faults.

Problems with Immergaz with automatic unlocking

Once you eliminate the cause of the malfunction, the board will automatically resume operation and heating.

What codes are found:

b 18 - violation of heating of the supply circuit (over 95 ° C). Eliminate the causes of poor coolant circulation (clogged filters, heat exchanger, pump blockage);
b 19 - the return heating level has exceeded 90°C. See solution for b 18;
b 24/b 30 - supply and return thermistors give different readings. The difference is 10°C. Diagnostics of the heat exchanger. Descaling;
b 25 - rapid increase in degree on the supply line. Feed the circuit with water;
b 26 - pressure decreased. Measure readings, add coolant to the circuit, configure the pump;
b 28/b 29 - the fan does not function. Replace the unit if it breaks;
b 33/b 38 - short circuit, break in the DHW thermistor. Connect the new part;
b 65 - the fan does not start for a long time. Diagnostics and replacement.

Another common fault is a yellow, uneven flame. In this case, the burner should be cleaned of soot and dust. Also remove dirt from the chimney shaft - it disrupts draft.

Not all models are equipped with a display. Some issue a failure code by glowing indicators. For example, Immergas Nike Star/Mini .

The indicator lights up	The light is flashing	Alternate lighting of diodes	Other
Yellow - message about the presence of a flame.	Yellow diode - standby mode is on.	All in turn - a small amount of liquid.	The lights are not on - the equipment is turned off.
Red - no ignition. Unit shutdown.	All indicators - the traction thermostat has tripped.	Red is on, yellow is blinking - circulation is disrupted.
Yellow - the NTC probe of the boiler or DHW has failed.
Red—Chimney Sweep mode is on.

If you cannot fix the problem yourself and the symbols appear on the screen again, it is better to call a technician.

Features of boilers from the Immergaz company

Immergaz boilers are available for sale in many models. Among them there are single-circuit and double-circuit samples, devices of condensation or convection type, as well as floor- and wall-mounted devices. In total there are over 10 series, differing in characteristics, type of installation and principle of operation. Each series includes models of varying power and performance.

According to the standard double-circuit scheme without a boiler;
According to the scheme with a built-in boiler;
According to the diagram with the connection of an external water heater.

Models with built-in storage boilers hold up to 120 liters of hot water. Some samples with a standard design use Aqua Celeris technology. It provides instant supply of hot water when the tap is opened.

Gas boilers from Immergaz are divided into single-circuit and double-circuit. They include built-in piping - there are circulation pumps, safety valves and expansion tanks on board. Some models are complemented by built-in hot water storage tanks. As for pumps, some boilers have a unique system for regulating the rotation speed through frequency modulation. This reduces gas consumption for the heating system.

In the gas boiler segment from the Immergaz company, condensing type models are presented. They can be floor or wall mounted. The devices have increased efficiency and reduce heating costs by up to 10-15%. All of them are divided into five lines - Victrix Tera, Victrix PRO, Victrix TT and Victrix Superior (wall-mounted), as well as Hercules Condensing (floor-mounted).

The wide range of Immergaz boilers includes models with different types of heat exchangers - traditional copper, stainless steel and cast iron (including separate and bithermic). Cast iron heat exchangers are presented in the ARES series. The power of boilers from this line is up to 60 kW. If we talk about the most powerful units, we will find them in the Victrix PRO series - their power varies from 35 to 120 kW.

Also found in Immergas gas boilers are:

Weather-dependent automation – controls the climate in the house depending on the outside air temperature;
Independent heating circuits - in high power models;
Superior automation – makes it easier to control gas boilers;
Heat exchangers of increased volume - they are resistant to clogging;
Remote control systems.

Flue gases are removed forcibly through coaxial chimneys or naturally through traditional chimneys.

Kinds

Immergas offers its customers a complete list of existing design and functionality options.

There are several types of gas boilers, which can be conditionally combined according to various characteristics.

By type of execution:

Wall-mounted. They are installed on strong load-bearing walls, are compact, small in size and limited in power.
Floor-standing. Installed directly on the floor or on a special stand. May have increased strength, power and size.

By set of functions:

Single-circuit. Designed only for heating the coolant (heating the house). However, most models can be connected to an external indirect heating boiler, which significantly expands the capabilities and allows you to increase the functionality of the equipment to the maximum.
Dual-circuit. Capable of simultaneously heating the coolant for the heating system and preparing hot water for domestic needs.

By type of heat transfer:

Convection. Heat transfer is carried out in a standard way - from the flame of a gas burner.
Condensation. The coolant is preheated from the energy obtained by condensing water vapor from the exhaust smoke. Increasing the temperature allows you to reduce gas consumption and make the heating mode softer, which increases the service life of the heat exchanger and burner.

Important! Condensing boilers are much more expensive than conventional models (2-3 times), however, they are able to fully function only on low-temperature heating systems such as underfloor heating and with a difference in air temperatures outside and inside the room of no more than 20°, which is unrealistic in Russian conditions.

By type of combustion chamber:

Atmospheric. Combustion air is taken directly from the room, and smoke is removed using natural draft.
Turbocharged. The combustion chamber is sealed; air is supplied and flue gases are removed using a turbocharging fan.

There is also a division according to the type of heat exchanger:

Separate (primary - copper, for heating the coolant, secondary - stainless steel plate, for preparing hot water).
Bithermal (combined). Manufactured according to the “pipe in pipe” principle, it simultaneously heats the heating agent and hot water.

The choice of a specific model is determined by the wishes and preferences of the user.

Wall-mounted gas boiler IMMERGAS. Model overview

The north of Italy has long been famous for technical innovation in all areas of industrial production. The largest company on the European market, specializing in the production of wall-mounted gas boilers under the world-famous Immergas brand, was no exception.

Conclusions and useful video on the topic

From the first video you can learn how to fix error number 02:

The following video explains how to resolve error 01:

Immergas boilers are high-tech and efficient gas equipment. In addition, they are safe to use, as evidenced by the ability to diagnose operational problems and alert the user to them by displaying the appropriate code on the screen. This helps to avoid danger, as well as quickly eliminate damage.

Have you ever encountered breakdowns of Immergaz boilers? Please share with our readers what kind of equipment error you encountered and how you managed to fix the problem. Leave your comments in the block below the article.

Each season has its own regime

Modern boilers are very easy to adjust a variety of parameters, including the intensity of fuel combustion. This function was introduced for a reason, but to prevent excessive fuel consumption due to clocking. It is recommended to choose your own regime for each season:

Winter - maximum or average power.
Spring, autumn - minimum power, in March and November - average.
Summer - the boiler is not used, or - minimum flame.

However, these settings are relevant if the boiler matches the size of the heated room. Many people take equipment “with a reserve” of power, implying severe frosts, deterioration of the heat-saving properties of housing, or an increase in the area of the premises. In this case, it is recommended to immediately set the flame to minimum, especially if the boiler is wall-mounted.

Burner adjustments may stop working or operate incorrectly over time. If boiler repair is not possible, you can change the flame power using a valve on the gas pipe. This method is rarely used in practice, since valve wear can lead to leaks.