Ariston gas boilers are highly efficient heating appliances that are excellent for hot water systems. Specially adapted for operating conditions in Russian conditions.

all Ariston models

Baxi gas boilers are characterized by high efficiency. Adapted for use in Russian conditions. They work excellently when the inlet pressure of natural gas is reduced to 5 mbar.

all BAXI models all Bosch models all Bradford White models

Gas boilers Buderus- this is an effective heating device for your home, cottage or apartment. Buderus gas boilers are produced in two basic versions: Buderus floor-standing gas boilers and Buderus wall-mounted gas boilers. The power range of such Buderus heating boilers is from 5 to 750 kW. Thanks to a wide choice of power, choosing Buderus gas boilers, you can choose the device you need.

all Buderus models

Wall-mounted gas boilers do not require a dedicated room for the boiler room, they can be easily installed. Wall-mounted boilers with an open (closed) combustion chamber for heating and hot water with a separate heat exchanger.

all Chaffoteaux models

The French brand of boilers De Dietrich ("De Dietrich") is one of the world's leading manufacturers of heating equipment and is recognized as the leader in this industry in France. Energy saving and protection environment For many years, they have been priority areas for the development of the company.

all De Dietrich models

FERROLI gas boilers are highly efficient heating appliances country house, cottage or cottage. FERROLI gas boilers are excellent for Russian operating conditions. FERROLI gas boilers are the highest quality and superior in technical characteristics heating devices. Thanks to a wide selection various models FERROLI gas boilers allow you to provide the best choice for you. FERROLI gas boilers are excellent for heating and hot water systems.

all Ferroli models

Gas boilers Kiturami are highly efficient heating boilers, which are also excellent for hot water systems. Kiturami gas boilers are produced in two versions - Kiturami floor heating gas boilers and Kiturami wall heating gas boilers.

all Kiturami models all Navien models

Protherm gas boilers are effective heating devices for your country house, cottage. Due to the high efficiency of fuel combustion, Protherm gas boilers provide highly efficient fuel combustion.

all Protherm models

Sime gas boilers are cost-effective, efficient heater. Sime gas boilers are divided into two main models: Sime Format OF gas boilers, which have an open combustion chamber Sime Format BF gas boilers, in this type of boilers the combustion chamber is closed

all Sim models

Unical gas boilers are an efficient and elegant heating device. Unical gas boilers are distinguished by their excellent technical characteristics, which makes them the most useful and productive. Unical gas boilers are produced from 64 to 3500 kW.

all Unical models

Vaillant gas boilers are excellent for heating and water supply of a country house, cottage. Vaillant gas heating boilers are manufactured in Germany, which ensures the highest quality of workmanship. Heating gas boilers Vaillant are produced in floor and wall versions.

all Vaillant models

Viessmann gas boilers are manufactured in Germany. Viessmann gas boilers are heating boilers that are used for heating in country houses, apartments and cottages. Viessmann gas boilers have wide choose wall, floor and condensate boilers. The power of the Viessmann gas boiler is from 6.5 to 140 kW. Viessmann gas boilers are excellent for heating and hot water systems.

Unical boiler error codes - Troubleshooting

If the burner malfunctions, it turns off automatically and the "key" symbol appears on the display of the Unical gas boiler. If you press the Unlock button, the display will show and flash an error code. Each problem has its own level. If two faults occur at the same time, the error code with the higher level will be displayed on the screen.

Error G1- Blocking by modulating the flame of the burner. Modulation device failure. How to fix it - Check the cable, replace the modulation device.

AS error- Blocking on the fan relay. Faulty fan pressure switch. How to fix - Check the air pressure switch, check the electrical connections or replace the ignition board.

Ht error- Increased temperature. The temperature in the appliance is too high. How to fix it - Check the operation of the heat exchanger and circulation pump.

AF error- Insufficient exhaust gas output. Flue gas extraction is too weak. How to fix - For models with index TN - Check the draft in the chimney or the flue gas thermostat. For models with index TFS - Check the operation of the fan and its pressure switch.

LP error- Small amount of water in the system. Insufficient water pressure in the heating system and, as a result, the minimum water pressure switch is activated. How to fix - Restore pressure by opening the fill valve and check for possible leaks. If the error code occurs again, contact the service department.

F error- Freezing. The heat exchanger of the Unique boiler has frozen. If the heating sensor detects a temperature below 2C, the burner will turn off until the temperature reading received by the sensor reaches 5C. How to fix it - Turn off the power supply of the device, close the gas cock, contact a specialist.

HL error- Faulty safety thermostat. The safety thermostat is activated. How to fix - Check the circulation of water in the heat exchanger, the functionality of the thermostat and its connections.

db error- Damage to the DHW sensor. The thermostat for hot water supply (DHW) has tripped. How to fix it - Check the operation of the sensor or the correctness of its connections.

Hb error- Faulty heating sensor. The heating thermostat is activated. How can be eliminated - Perform a check of the sensor's performance or the correctness of its connections.

Eb error- The outdoor sensor has switched off. Perform a wiring check and change the outdoor sensor if required.

FP error- Failed factory settings. The factory settings have changed. How can be eliminated - Using the access code to the service menu, restore 13 factory settings.

bc error- Flame control failure. How to fix - Replace the flame control board or modulation board.

Strikethrough Flame Symbol- Ignition blocking. There is no gas or ignition on the burner. The key symbol flashes. When you press the restart (unblock) button, the error code is not displayed on the screen. How to fix it - Check the gas supply or the ignition electrode for proper operation.

Code E1- Internal fault. Replace the electronic control board.

Code LL- Reduced voltage. Supply voltage too low.

Code E2- A firmware failure has occurred. Replace the electronic control board.

Code E3- Problems with the flame circuit. Replace the electronic control board.

Code E4- Gas valve driver failure. Replace the electronic control board.

Code E5- Built-in memory failure. Replace the electronic control board.

RE code- Occurs too a large number of remote resets. After five resets within 15 minutes, a fault code occurs. It is recommended to turn off and restart the device to clear the error code.

How to fix breakdowns

Can you please tell me how to get rid of the bc error?

This error can only be eliminated by repairing or replacing the electronic control board.

Boiler Unical Idea cs 24. In heating mode, it turns on the burner only when it drops to 39 degrees in all modes. The upper temperature limit at which the burner turns off in all modes, as expected, is different.

There may be a problem with the heating temperature sensor.

Gas boiler Unique. I'll try to be more precise. When working on heating, set the regulator to the minimum position. Heating up to 50 degrees, the burner turns off. When it cools down to 39 degrees (as expected), the burner starts up again and the cycle repeats. Let's move the regulator to the maximum mode. When the temperature reaches 78 degrees, as expected, the burner will turn off. It turns on again
when the water temperature drops to the same 39 degrees (should be at 70) and heats up to 78. In the intermediate positions of the regulator, the same story with the burner turned on at 39 degrees.

It is possible that the circulation is very weak and the boiler picks up temperature very quickly and loses it just as quickly, and the cyclicity does not allow it to turn on more often. Here and from here and falling to a minimum. After the unit heats the system to the required temperature, the issue will be removed by itself. But the problem of poor circulation will remain.

Gas boiler Unical Eve 05. Blocked with error bc (combustion control), while burning does not even start. There is also no ignition. Restarting helped before. Didn't help today. What do you advise? Question: should there be spark or not? Or first gas supply, and then a spark? Can the gas valve break? Just some kind of squeak appeared, which was not there. The symptoms are generally as follows: The device tries to start, the relay clicks - there is no gas, no spark. As a consequence - error bc.

The Unique Eve 05 boiler has known problems, failure of the control board, when there is a problem with starting the turbine and there is a failure of the pressure sensor. Look in this direction. The logic is, pump-fan-spark-gas. If the ignition transformer breaks down, the gas valve will still open, although this does not change anything. The squeak most likely indicates that there is some kind of problem with the transformer, since there is a high voltage there, which causes the squeak.

Gas boiler Idea cs 24. I put it in summer mode, but it does not turn off. Heats all the time up to 40-41 degrees. I put it on maximum, it does not heat much. All the same 40-41 degrees. What could be? Regulator failure or maybe just some kind of reboot is needed?

I can only assume that if this is a problem, then you need to look for it starting with the temperature sensor and temperature controller.

Today I took off the heat exchanger on the one hand, it is blown through, and the air comes out, and on the other hand, the air is not blown at all. Dropped it in for the night citric acid, and the water still does not flow, the electrolyte containing hydrochloric acid was flooded, but it was not possible to break through the plug. Compressor can't blow through either. Can you advise something?

I must admit that you have done everything possible and everything is correct and you just have to replace the heat exchanger with another one.

Yesterday I had the following problem. The Unical Idea gas boiler model, in my opinion, is CS 24. When the heating is set to a minimum, the device turns on, heating starts, everything seems to be normal. But heating from 38 to 50 degrees occurs in 8-10 seconds (during normal operation, it took 40 seconds). Upon reaching 50 gr. the heating is turned off and the temperature drops again to 38 (it seems to be also a normal mode), but the cooling also takes 8-10 seconds (before that, the cooling took place for at least 5), and heating started again. Those. now the unit very often clicks back and forth with a break of 8-10 seconds, this is not normal. The device is new and has worked perfectly for 2 winters. And so I decided to spoil my mood. Warranty has ended. I have not come across boilers before, but I understand electrical and electronics. I re-read the instructions, but such a problem is not described in it, and the unit does not give any error, it seems like regular work is obtained if it were not for such short time intervals. What could it be and how to fix it?

First of all, find the coarse filter and check its condition.

Lights up on the LP display. What does it mean? The boiler does not start. Model Unique 24 Idea.

The LP error is the lack of water (insufficient water pressure). It is necessary to restore pressure using the filling cock and check the system for leaks.

Hot water does not work, the temperature constantly jumps from boiling water to cold water. What can be done?

If the error does not appear on the display, then the connection is incorrect or the unit is not configured.

How to fix bc error on Unical Eve 05 model?

Probably error 6C. Flame control problems. The flame control board or modulation board needs to be replaced.

When using hot water the heat exchanger boils with error code HL. What is the reason?

HL error occurs when the safety thermostat is triggered. To fix the problem, you must press the unlock button on the panel, and also check the connection of the thermostat and its performance.

The Unique boiler works only for the supply of hot water. The transition to CO completely ignores, does not start at all. At the same time, it periodically gives an error E6 (malfunction of the external sensor). But this model does not have an outdoor sensor. The heating temperature sensors have been checked and are working. The pressure in the system is normal. What could be the problem?

I can't say what exactly, but it is obvious that the problem is with the signal to start the heating. The pressure switch blocks common work device, in this case the water would also not work. It turns out that only the sensor and the regulator control the heating.

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OPERATION AND REPAIR OF BOILERS

UNICAL is a well-known European manufacturer of climate control equipment. Having started its history in 1972, UNICAL is now the number one manufacturer in Italy. Unical owns several factories in Italy and, unlike others, has a full production cycle in Europe. UNICAL is the No. 1 boiler in Italy.

The UNICAL EVE 05 boiler is the perfect combination of the most modern specifications and simplicity. Boiler Unical EVE 05, having simple design and principle of operation, is an evolutionary technology applied for the convenience of the user. A wide range for every requirement EVE 05 is available in versions with open or closed combustion chamber with fan, with bithermic or monothermal heat exchanger and additionally with plate heat exchanger for domestic hot water. It can work on both natural and liquefied gas. Level of protection against defeat electric shock IPX4D. Dimensions: Height 700mm Width 420mm Depth 310mm Easy to install, set up and maintain thanks to an efficient electronic control system and a convenient layout of components.

Boiler components EVE 05

DHW in the boiler EVE 05

Simple and fast combination (on Unical EVE 05 CTN 24F and Unical EVE 05 CTFS 24F models)

Bithermic heat exchanger Ultra-compact, with a ribbed surface of 1.65 m2, having 6 oval-section copper pipes, inside of which pipes are inserted, in which DHW water circulates (up to 13.7 l / min) with a temperature of 35 to 60 ° C, which ensures top speed heat exchange, thereby significantly reducing the formation of scale.

As a result we have:

• Instant cooking hot water compared to traditional boilers;
• Rapid response to temperature changes due to the low thermal inertia of the materials used and the shape of the heat exchanger
• Significant energy savings.

High level of comfort (two separate heat exchangers in Unical EVE models 05 CTN 24 and Unical EVE 05 CTFS 24)

• Monothermal primary heat exchanger: guarantees the required power and perfect efficiency at any load
• DHW heat exchanger made of stainless steel AISI316 L, consisting of 12 plates. The use of this heat exchanger provides a high heat exchange area, which, at the same water temperatures and the required amount of water, allows the boiler to operate at a lower temperature. temperature regime and get: - Constant water temperature during disassembly - Preparation of 13.7 l / min of hot water at At 35 K.
• The electric 3-way valve is manufactured according to a new concept that is the result of Unical's technological research. It is part of a brass hydraulic group, has compact dimensions and, thanks to a powerful electric motor, allows you to quickly and reliably switch the water prepared in the primary heat exchanger to the secondary DHW heat exchanger or to the heating circuit, thereby optimizing the temperature modulation.
• The automatic by-pass allows water to circulate in the primary heat exchanger of the boiler and thus protect it from overheating.

Boiler Unical EVE 05 Simple and technologically advanced

The EVE 05 boiler has been designed for maximum user convenience. The control panel is made in accordance with the basic rules of ergonomics and has the following components:

Easy installation and maintenance

The professional installer is always interested in the quality of the product, but he is also interested in fast installation, with minimal inconvenience to customers. EVE 05 has simple shapes and shallow depth (only 310 mm); it has been designed for ease of use, quick installation and easy access to components for warranty and service purposes. Thanks to the component diagram, technicians have no doubts: at a glance, they determine how installation or maintenance should be carried out at the lowest possible cost.

Gas heating boilers Vaillant
Models: floor-standing Atmovit exclusiv, wall-mounted condensing Ecotec plus. Service, maintenance, adjustment of functional components. Hydraulic schemes.
Gas wall-mounted boilers Ariston
Models Clas, Clas Evo, Genus. repair advice, maintenance and service. Elimination of errors and malfunctions. Methods of tuning and adjustment.
Gas boilers Immergaz
Models Eolo Star, Eolo Mini, Nike Star, Nike Mini, Mitos. Repairs and adjustments. Installation, installation and connection. Working mode settings and additional equipment.
Kentatsu Furst boilers
wall models nobby smart. Condensing Smart Condens. Floor Sigma, Kobold. Solid fuel Elegant, Vulkan. Faults and error codes. Description and characteristics.

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Unical boilers - characteristics, malfunctions and repairs

Unical Eve

Gas wall-mounted boiler Unical Eve 05 with a built-in atmospheric burner is used for heating and hot water in residential buildings and private homes. The lineup has the following versions: index 24 - power 24 kW; WITH - fast cooking hot water; R - only in heating mode; TN - natural draft; TFS - forced draft.

Eve 05 models can be equipped with an open or closed combustion chamber with a fan, with a bithermic heat exchanger or a monothermic and additional plate heat exchanger for hot water supply. It has the ability to operate on two types of gas: natural and liquefied. The class of protection against electric shock is IPX4D. Dimensions: height - 700mm, width - 420mm, depth - 310mm.

These models are easy to install, configure and maintain, as they have an efficient electronic control system and a convenient arrangement of work items. The unit is equipped with all the required safety and control components, which are provided for by European standards and directives.

It can be attributed to the category of units having high efficiency, because the following parts and functions are included in its equipment:

High efficiency copper bithermic heat exchanger (CTN-24F/CTFS-24F).
- Monothermal copper high efficiency heat exchanger (RTN-24/RTFS-24).
- Plate heat exchanger for DHW preparation (models CTN-24/CTFS-24).
- Electronic ignition. Electronic flame modulation.
- Minimum setting. thermal power for heating.
- Electronic setting in ignition mode.
- Antifreeze mode. Function of protection against blocking of the circulation pump.
- Pump post-circulation system. Safety thermostat.
- 3-speed circulation pump. Expansion tank.
- Automatic air release valve. Make-up valve of the system.
- Pressure switch to protect against lack of water in the heating system.
- Flow switch with hot water priority.
- Hot water flow limiter set to 12 l/min (blue/light blue trim).
- Control panel with electric shock protection class (IPX4D). Pressure gauge.
- Light diodes indicating requests for DHW preparation, heating, electric current, error notification, burner operation (using the display).
- Regulation of hot water temperature 35/57С.
- Heating temperature control 45/78C plus switch to summer/winter modes.
- Chimney cleaning release button, visualization of error codes.
- Systems for protection against blockage of the chimney system (index 05 TN).

Error codes for boilers Unique

If the burner malfunctions, it switches off automatically and the "key" symbol appears on the display. If you press the Unlock button, the display will show and flash an error code. Each problem has its own level. If two faults occur at the same time, the error code with the higher level will be displayed on the screen.

Error G1- Blocking by modulating the flame of the burner. Modulation device failure. How to fix it - Check the cable, replace the modulation device.

AS error- Blocking on the fan relay. Faulty fan pressure switch. How to fix - Check the air pressure switch, check the electrical connections or replace the ignition board.

Ht error- Increased temperature. The temperature in the appliance is too high. How to fix it - Check the operation of the heat exchanger and circulation pump.

AF error- Insufficient exhaust gas output. Flue gas extraction is too weak. How to fix - For models with index TN - Check the draft in the chimney or the flue gas thermostat. For models with index TFS - Check the operation of the fan and its pressure switch.

LP error- Small amount of water in the system. Insufficient water pressure in the heating system and, as a result, the minimum water pressure switch is activated. How to fix - Restore pressure by opening the fill valve and check for possible leaks. If the error code occurs again, contact the service department.

F error- Freezing. The heat exchanger has frozen. If the heating sensor detects a temperature below 2C, the burner will turn off until the temperature reading received by the sensor reaches 5C. How to fix it - Turn off the power supply of the device, close the gas cock, contact a specialist.

HL error- Faulty safety thermostat. The safety thermostat is activated. How to fix - Check the circulation of water in the heat exchanger, the functionality of the thermostat and its connections.

db error- Damage to the DHW sensor. The thermostat for hot water supply (DHW) has tripped. How to fix it - Check the operation of the sensor or the correctness of its connections.

Hb error- Faulty heating sensor. The heating thermostat is activated. How can be eliminated - Perform a check of the sensor's performance or the correctness of its connections.

FP error- Failed factory settings. The factory settings have changed. How can be eliminated - Using the access code to the service menu, restore 13 factory settings.

bc error- Flame control failure. How to fix - Replace the flame control board or modulation board.

Symbol "Crossed out flame" - Blocking on ignition. There is no gas or ignition on the burner. The key symbol flashes. When you press the restart (unblock) button, the error code is not displayed on the screen. How to fix it - Check the gas supply or the ignition electrode for proper operation.

Faults and their elimination

The Unique boiler has been in operation for six months. The last time they turned it off and drained the water from the system, after which the pressure dropped. According to the instructions, the pressure was increased to 1.5 bar. The unit works properly, however, after we turn off the water in the tap, at this moment the pressure jumps to 2-2.5 for 1 second, after which it turns off. What could it be and how to fix it?

Pump up the expansion tank.

Can you please tell me how to get rid of the bc error?

This error can only be eliminated by repairing or replacing the electronic control board.

Tell me, when you close the hot water, the Unical Idea boiler does not turn off the water heating (the tap on the indicator is on) and turns off only when it overheats, this does not happen every time, but quite often. Is there any way I can diagnose the problem so I can fix it myself?

There may be a banal reason, the flow sensor does not work. Need to clean up.

Problem with the Unical Eve 05 boiler. It has been in operation for two years, and ignition has ceased. When starting, everything is as always, but it comes to ignition of the gas, it seems that the relay clicks and ignition does not occur. The display shows a flame control error - replace the board. The board is like new, there were no water inlets on it, el. Capacitors are not swollen, diodes are intact. Microcracks were - soldered. All voltages are in place. Maybe it's not the board, but something needs to be cleaned?

Most likely the pay.

There is a Unique 05 boiler. Three years in operation, I rarely use it, but in winter it is constantly in heating mode. Until now, I didn’t really think about the correctness of his work, but I decided to ask anyway. The unit heats an apartment of 55 squares: 3 large aluminum radiator(sections of 10-12), two small radiators (sections 3-4), heated towel rail in the bathroom. I don't know the size of the system. The temperature of the water in the heating is somewhere around 70 degrees. There is a room thermostat, usually set at 15-16 degrees, since for the most part the apartment is empty. Here's how it works: if the air temperature in the room is lower than on the room thermostat, the boiler starts up, the pump and burner turn on (I suspect that at full power), the water in the system starts heating. As soon as the water temperature in the system reaches 70 degrees (the temperature is set on the device itself), the gas supply stops and the burner goes out. The pump continues to drive water around the circuit. When the coolant temperature drops
somewhere up to 60 degrees (this is in two or three minutes), the burner turns on again at full power, and the coolant again heats up to 70 degrees (this is also about 2-3 minutes). This cycle continues until the room temperature reaches the level set on the room thermostat. After that, the burner goes out, the pump still continues to work until the water temperature reaches a certain value (I don’t remember how much). After that, the pump stops. Accordingly, as soon as the temperature in the room drops below the mark on the thermostat, the unit starts to work. Actually I wanted to ask: the instructions say that the burner has a modulation function (or how it is correct). And in my model, it turns out that the intensity of the flame does not change, and the burner just works at full power, and then turns off when a certain temperature is reached. This is fine? And how is it supposed to work?

Any boiler should work as it should: correctly, reliably, quietly, safely and rationally. But only if the one who should do it will mount and configure it.

Boiler Unical Idea CS-24. Tell me, what kind of protection is provided in the unit of this type when the DHW flow sensor freezes? The magnet is lifted by the flow of water, the reed switch is activated and the burner is turned on. For some unknown reason (possibly, debris got in, although there is a filter, a mesh at the input), the magnet in the flow meter was fixed in the upper position, the burner did not turn off after the hot water tap was closed. Water boiled in the heat exchanger, drove steam into the system cold water. Since the hot tap is closed, and there is a temperature sensor on it, it did not work. From the hot steam, the PPR pipe on the metal-to-PPR adapter melted. Then, after all, the burner turned off and water went into the hole formed.

As in any boiler - overheating shutdown. I suspect your pipe broke in cold water. It happens in the following way. In your model, the pump does not work in DHW mode, close the DHW tap, the flow sensor is jammed, apparently due to the lack of a fur filter. cleaning, and remained closed. The device still "thinks" that the tap is open, so it does not turn off the burner. Water instantly boils in the heat exchanger, the temperature and pressure rise like an avalanche, steam flows towards cold water, because towards the hot taps are closed. The overheat sensor turns off the burner, but it has inertia for a couple of seconds, and this is enough to knock out the metal insert from the temperature-softened combined PPR coupling. Alas, this is the essence of the work of models of this type with this flow sensor. As a way out, the installation of an overpressure safety valve in the DHW tract.

The boiler Eve 05 CTFS 24F turns on and off very often, burns within 25-30 seconds and turns off for 15-20. Is that how it's supposed to be or is there a problem with it? Area 100 sq.m., cast iron radiators 56 pcs, aluminum 33 pcs plus floor heating 24 sq.m. There are thermostats on the radiators in every room. The unit behaves this way at any temperature. At the moment the temperature is 70 degrees.

What can be assumed? All thermal heads are closed (it is warm in the house). Somewhere the flow in the heating system is blocked, be it pipes or filters. Temperature sensor defective. If the unit has a built-in bypass, it could be stuck open.

Unical Modal

These models are hermetically sealed steel construction with high efficiency. Designed for functionality only heating system, the water supplied to the machine can reach more than 50 degrees. Modal boiler options, configured only for space heating, are presented in 10 brands, their power is from 64 to 291 kW. Model options that operate both for hot water supply and for heating are shown in three modifications, their power is from 105 to 140 kW, and has a heat exchanger volume of two hundred and fifty liters.

Peculiarities

Improved heat transfer. Cuff closed firebox. The compactness of the apparatus, with a fully streamlined sleeve closed firebox and fire change, is designed for improved heat transfer when using a low flame fuel: gas or liquid fuel.

A low flame promotes heat dissipation and better convection. Improves the structure of the boiler itself and promotes heat transfer - a crescent-shaped and even bottom of the chamber, which are brought together near the accumulation of water.

Possibility to adjust the door. Doors are fully sealed. If it is violated, then the exit of smoke and gas can lead to: loss of heat; the device may lose its shape; release of carbon monoxide.

Therefore, precise adjustment and strength of the door help to achieve perfect tightness. The position of the hinges can be adjusted and placed on the right or left. The ceramic fiber that covers the door helps in retaining heat by 40% and increases the service life.

Innovations in heat transfer to avoid condensation - The innovation is to install flame tubes at the top, in the hottest part of the apparatus - this reduced the likelihood of condensation during cooling. And also to deepen the pipe into the back wall of the block of the apparatus itself - this helped to increase the temperature index at the end of the pipe and avoid the appearance of rust.

Boiler Modal B with boiler

Based on the Modal boiler, a unit with index B was developed. It already included two functions: heating and hot water, hot water supply was given priority. A vertical boiler was added to it, which operates under pressure up to ten bar, inside it is treated with a sanitary and epidemiological coating, which helps to avoid corrosion and calcium deposits. Modal B modified with boiler-boiler pump. Glass enamel, consisting of two layers and processed at 820 degrees, is the main coating.

Equipment and additional functions: The thermal insulation of the shell is made with synthetic fiber with a thickness of 50 millimeters. Steel swirlers are built in to increase the combustion of fuel products.

Unical Ellprex

Unical Ellprex boilers are cylindrical type units with flame inversion in the furnace and three gas ducts of the boiler block. Its design fully complies with the requirements set by EN 303. The pressurized components, namely the body and flue pipes, are made of certified carbon steel in accordance with the norms. Up to the ELL 630 model, the firebox is welded to the rear wall of the boiler block.

In the Ellprex ELL 760/ELL 3500 models, the firebox has the possibility of flexible deformation, since it is welded only to the front wall of the boiler block. The units are equipped with an opening door that can be hung on the right or left. The outer shell is covered with an insulating layer of glass wool 80 mm thick, which in turn is protected by a mineral fiber cloth. Top part the shell is equipped with lifting and moving eyes.

Ellprex boilers can be fitted with a two-stage or modulating burner provided that the minimum achievable thermal power will not be lower than that indicated in the specification table for the type of fuel used. In the side part of the casing there are openings for power supply, fuel supply to the burner, connection of the pump drive, and any other auxiliary devices.

Right choice The burner and its adjustment are fundamental factors for the optimal operation of the Unique Elprex boiler. When choosing a burner, make sure that its load corresponds to the power characteristics of the unit. Do not forget that the aerodynamic resistance, or rather the resistance in the furnace, must create zero pressure at the base chimney. In addition, it must be taken into account that the length of the burner head must not be less than that indicated in the table, and that the flame produced by this burner corresponds to the characteristics of the firebox.

To get the most out of the heat exchange capacity of the solid bottom firebox, it is necessary to use burners that produce a long and narrow flame at any modulation level. Too short a torch contributes to overheating of the upper part of the firebox. In addition, not sufficiently cooled combustion products entering the flue pipes at a sufficiently high temperature can cause the unit to overheat.

Repair and service of Unical boilers

Boilers Unique are high-tech and meet the latest world standards, their cost is affordable and attractive to domestic consumers. Under this brand, several models of this equipment of the Modal and Ellprex series are produced, which are designed for heating the coolant and water for hot water supply. It is possible to choose a household unit with a capacity of up to 290 kW or more powerful models for commercial use (up to 6 thousand kW).

This equipment has been manufactured for maximum convenience consumers, but also requires compliance with the necessary conditions, including: correct installation heating devices; the presence of a gas outlet; connection to a stable electrical network; use of high-quality fuel; compliance with operating rules, etc. Observing all these conditions, it is possible to ensure long-term operation and maximum efficiency.

Unical boiler models, which are repaired in service centers: Ellprex 420 ht, Ellprex 510, Ellprex 760, Eve 05, Idea cs 24, Modal md 186, 233, Modal 291, 64, 163. Troubleshooting the heating system is as follows: checking the general condition of the heating system, compliance with the design and installation rules; replacement of failed parts; setting the work in the desired modes.

Maintenance

Distinctive features of boilers Unique:

Compactness (the dimensions of the models allow them to be carried through a doorway 80 or 110 mm wide);
- models for liquid (diesel fuel, kerosene), gaseous (liquefied or natural gas), solid (pellets, coal, peat, etc.) fuel;
- a short torch for the best heat exchange;
- convex rear part of the boiler block to avoid deformation during high pressures(up to 6 bar);
- precise adjustment of the airtight door, which eliminates even the slightest smoke leakage, deformation of the unit structure and heat loss;
- mineral wool thermal insulation of the shell; flame reverse; excess pressure in the combustion chamber;
- the combustion chamber is fixed only by the front wall (remains movable in all modes), which ensures high structural strength;
- installation of spiral turbulators to prevent the formation of condensate;
- thermal insulation shells made of mineral wool and heat-resistant concrete;
- high-speed pump; thermostatic or electronic control panel.

The presence of a folding panel greatly simplifies the maintenance of the unit. Periodic inspections (2-4 times a year, depending on the complexity of the heating system) and performance checks allow timely detection and elimination of various malfunctions. If the device has not been started for more than a year, then an extraordinary inspection is done. For safety reasons, the unit is immediately stopped if malfunctions of the following devices and units are detected: pumps; manometers; water gauge glass; safety valve; lowering the water level; increase in pressure to critical values; equipment deformation.

In order to connect to the gas pipeline, it is necessary to provide representatives of the relevant service with documents, including an agreement for regular service maintenance heating installation. Like any complex Technical equipment working with high temperatures, these models need constant service. The maintenance procedure must be comprehensive and timely, and this applies to all models of heating installations, not only of this brand, but also of all others.

The need for regular maintenance is associated with various factors, which include the following: contamination of working units with combustion products; diagnostics of automation that controls equipment; burnout of the burner divider; nozzle clogging; displacement of ignition electrodes; breakdown of the control thermostat; knocking down automatic settings.

Service maintenance is required mainly to check the operability of automation and all conductive parts, since it is these nodes that most often fail.