Secondary heat exchanger for ariston gas boiler

Secondary heat exchanger for gas boiler ARISTON

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Heat exchanger. the basic operational component of the boiler equipment, which transfers the heat resulting from the combustion of gaseous main fuel. It is located near the burner.

The walls of the device are made of metal, which has a good heat transfer coefficient. The liquid coolant, washing the heating surface of the heat exchanger is heated to a temperature of 65-95 C and flows into the heating network inside the house.

The movement of the coolant to the radiators is natural, due to the temperature difference between heated and cooled coolant, or forced, using a centrifugal pump. Passing through the heating device system, the cooled coolant returns to the boiler for the next heating cycle

In modern energy efficient boilers, the most common are plate designs. Their stainless steel plates are securely welded to each other at the contact points and along the edges.

This guarantees 100 % consistent operation, without leakage and mixing of fluids from the various heating circuits.

Copper is a preferable soldering material for such constructions. The design prevents the formation of scale and corrosion on the heating surface of the boiler. Thus ensuring economical operation of the boiler unit with high efficiency.

Repair kit of gas water heater ARISTON FAST11CFP, FAST14CFP, FAST16CFP with 07.2008 г.в.

Retekool Basic heat exchanger for ARISTON Microgenus (Plus), Microsystem, part number 998620

Pressure gauge for Ariston boiler 65100757

The heat exchanger for Ariston boiler 65106300

Thermostat for Ariston boiler 65102660

Heat Exchanger for Ariston Boiler 998619

The repair kit of the water block for a gas water heater Ariston Fast 11 CF P (c 07 2008).)

Part Ariston three-way valve assembly 65114924

Control board for the water heater ARISTON VLS. (display) 65151234

Repair kit of wall mounted boiler “ARISTON” mod. MATIS, EGIS PLUS, GENUS EVA, CLAS B, CLAS EVO. 1020286

Part Ariston Feeder unit 60002320

Three-way valve assembly (KIT) Ariston

Adapter Ariston Du60/100 mm x Du80 mm (installation on the boiler)

Motor and cartridge three-way valve Ariston (60001583)

Piezo ignition device for boiler ARISTON 61313911

Make-up valve for Ariston/Baxi (Bitron)

Heating elements kit RCA PA for repair of Ariston water heater 2000W/230V

Unit of ignition with a cable for boilers Ariston 65100514

Shineui Three-Way Valve Actuator for ARISTON, 61302483, 61302483-01, 997147; 220V

Part Ariston three-way valve assembly 65114924

Ionization electrode for gas boilers ARISTON MARCO Polo GI7S 11L FFI NG (NEXT EVO SFT 11 NG EXP) 65158248

Hydrogroup kit for Ariston, Chaffoteaux 60100141

DHW turbine for Ariston/Chaffoteaux 65104317

Wall mounted gas boiler Ariston GENUS PREMIUM EVO HP 85KW EU

Relay ALD124. Relay for electronic boards of gas boilers Immergas, Hermann, Ariston, Chaffoteaux Maury, Elexia

Return tube for Ariston boilers 60001276

secondary, heat, exchanger, ariston

Repair kit of gas water heater ARISTON FAST11CFP, FAST14CFP, FAST16CFP till 07.2008 г.в.

Three-way valve (KIT) Ariston

65153301 Temperature sensor, Ariston, 300mm, 4 pins

secondary, heat, exchanger, ariston

Repair kit of gas water heater ARISTON DGI 10L CF NG SUPERLUX (in blister)

Pressure switch for gas boiler Ariston CARES X, CLAS X, HS 65115792

Control board of the power ARISTON ABS VLS water heater 65151230

Zilmet Plate heat exchanger for boiler ARISTON UNO 24, reference 995945, 16 plates (increased capacity)

Ignition electrode of gas boiler Ariston UNOBLOC 65102712

Hall sensor (flow sensor) ARISTON CLASS-GENUS-BS (Art. No. 65104323)

Heat carrier feed tube with connection kit for boilers Ariston 60001302

Condensate drain for Ariston boilers

Connecting branch for boiler ARISTON CARES of any power, set

Gas valve (block) Vaillant atmoCRAFT 65-145 kW- 295476

Ariston Uno three-way valve repair kit 65101288

Main heat exchanger for ARISTON Microgenus (Plus), Microsystem, part number 998620

Return group for Ariston boiler 65104335

Heating element of ARISTON water heater of VLS INOX series. 1500 W, зам. 65180104, 65152175, 65180099, 65152170

How to clean the heat exchanger of the mounted boiler Ariston

The heating boiler, as well as almost any technological equipment, operating in difficult conditions, requires periodic maintenance. One of the most important operations, performed during maintenance of the gas boiler, is a cleaning of its heat exchanger.[contents h3 h4]

Why it is necessary

The heat exchanger is a metal (or cast iron) box with a built-in radiator, which is heated from the outside by the burner flame and transfers the heat to the fluid flowing inside. If the heat exchanger is clean, it operates at maximum efficiency, giving almost all the energy received for heating. Over time, however, various impurities. combinations of salts dissolved in the heat transfer medium (scale). start to deposit on the walls of the internal channels. Lime scale formation is especially intensive in the secondary heat exchanger of a two-circuit boiler if hard water is used in the DHW line.

This contamination of the channels of heat exchangers can lead to a number of unpleasant consequences:

  • Decrease in the efficiency of the boiler. Mineral deposits have much lower thermal conductivity than metal, so much more energy must be used to heat water. Accordingly, gas consumption will also increase.
  • Overheating of the heat exchanger. The scheme of operation of gas boilers assumes that the coolant coming from the return line, cools the inner cavities of the heating element. Scale build-up results in low cooling efficiency, the heat exchanger overheats and quickly fails.
  • Breakdown of heating equipment. Mineral deposits on the internal walls of heat exchangers make the passage of coolant through them difficult. It creates additional load on the circulating pump that will quickly deplete its resource if the narrowed channels are not cleaned in time.

Thus, the timely flushing of the heat exchanger will help to save a lot of money by preventing the breakdown of expensive components and provide the minimum required fuel consumption.

Frequency of heat exchanger cleaning

In different sources you can find quite contradictory information on how often you should clean the various elements of heating boilers. As a rule, maintenance intervals are listed in the manual for a particular model. Please note, however, that these figures are approximate and based on operation in the most favorable conditions. In reality, flushing of heat exchangers may be needed even more often.

You can assess how badly the heat exchanger is clogged by several indirect signs that accompany the operation of the gas boiler:

  • Gas consumption has risen noticeably. Practice shows that sediments inside the heating element can increase fuel consumption by up to 15%; This is what the heat exchanger looks like after intensive use
  • The performance of the heating system has decreased. Long heating up of the radiators, low temperature of the coolant in the return, burner permanently on. all this can indicate that it is time to flush the heat exchanger;
  • Low pressure at the tap, hardly warm water in the DHW system also often indicate possible problems of heat exchangers of two-circuit boilers;
  • High load on the circulation pump, noise or clear signs of interruptions in its operation are also a signal that the system requires flushing.

The design of modern boilers is designed for long-term use, and the cost of spare parts for them is quite high. Therefore, the heat exchanger should be cleaned as soon as the symptoms described above appear. Otherwise, the cost of heating boilers can increase markedly.

Heat exchanger cleaning methods

The exchanger can be flushed in different ways. Below we will consider them in detail, and at the same time note how to clean the heat exchanger of two-circuit boiler, which is particularly prone to the formation of organic deposits.

Manual cleaning

To solve the problem in this way, the heat exchanger must be completely removed from the boiler to get free access to it. After that it can be cleaned with various tools:

  • Mechanical cleaning. You can remove plaque from the inner surface with a stiff metal brush or a special scraper;
  • Flushing in special compounds. Most often the parts of heat exchangers are soaked in an acidic flushing solution. This method is particularly effective for removing heavy soiling, e.g. in the ducts of double-circuit gas boilers.

The manual cleaning method is simple and effective. It can be used to flush the heat exchanger by yourself. The only note is to be careful when working with the sealing elements of the boilers and ensure the tightness of all joints.

Hydrodynamic cleaning

Flushing of the heat exchangers of gas boilers can be carried out without disassembling it.

Hydrodynamic cleaning is a process of mechanical removal of scale from the walls of pipelines using high-pressure water jets, which sometimes contain impurities of small abrasive particles.

This procedure is performed using special units that can pressurize the pipeline with up to 1500 bar. This is the most effective, although quite expensive way to clean heat exchangers.

Chemical cleaning

Chemical washing of the elements of gas boilers is that the system with a special device, which is called a booster, an acid washing solution is introduced. This solution is then run through the heat exchanger for several hours and cleans it. This method allows to remove most complicated types of deposits. carbonate scale and trivalent iron.

The heat exchanger before and after cleaning

The disadvantages of chemical cleaning are high reagent cost, metal wear and large amounts of toxic waste.

Fluids for flushing heat exchangers

Consider the question of what to flush the heat exchanger of a gas boiler. Despite the abundance of recommendations in various sources, some caution should be exercised in choosing a cleaner.

Many experts recommend that hydrochloric acid be used for flushing. It is really good at removing limescale, but it is quite an aggressive compound that can break the protective coating of the internal surface of the heat exchanger.

In addition, there is evidence that hydrochloric acid flushing can cause metal brittleness.

Less dangerous for the heat exchanger material is citric acid. It copes very well with all types of deposits, as well as special reagents: DETEX, Cillit, Sanax and others.

Timely and proper maintenance of the elements of the heating system will increase its service life and reduce maintenance costs. Cleaning the heat exchanger, as one of the most important operations performed during maintenance of boilers, will make the most significant contribution to this process.

Signs of failure of the secondary heat exchanger of Ariston boiler

Gas boilers Ariston and other brands work with maximum efficiency if all components are kept in good technical condition. This applies primarily to primary and secondary DHW heat exchangers.

Together with the employees of the company “ZakServis” let’s talk about the importance of timely maintenance. Users should know the main signs of failure of Ariston heat exchangers, which can often be eliminated on their own. Most often it is not a question of buying new components, but to do maintenance.

Gas boiler primary heat exchanger

The primary, or just a heat exchanger, is a large part in the form of a tube with bends, through which thin plates. This shape and the device itself is also called a coil.

Manufacturers make heat exchangers of stainless metals like copper and stainless steel. In different brands of boilers they almost do not differ in structure. shell and tube in the form of a coil.

The device transfers heat energy from the gas to the heat transfer medium, usually water. Units differ in capacity, and the greater the length of the pipe and the number of ribs (bends), the higher it is. Heat exchanger works well as long as soot outside and salts inside do not accumulate in excess. Circulation is then impaired and the thermal conductivity of the walls is reduced. Heat exchangers must be cleaned in time and protected with water filters.

In the boiler design, the primary exchanger is located in the combustion chamber, above the flame of the main burner. A manufacturing material with a high heat transfer capacity retains heat well and loses it as quickly as necessary. Narrow plates distribute heat energy more evenly. The primary heat exchanger is the main heating element of the gas boiler, if you do not count the burner.

Primary heat exchanger repair

Exchanger deteriorates due to poor-quality heat transfer fluid or materials of which it is made, as well as other factors. Pressure, high temperatures and their differences lead to cracks, because of which the element begins to work less power, and over time breaks. The life of the heat exchanger can be extended if you supply purified water and do not overload the boiler.

Cracking will be harder to fix than plugging. Solder the heat exchanger for this purpose. Select a solder of the same material as the unit itself. Boiler heat exchangers are usually made of copper, less often. of cast iron or steel. Aluminum, silicon, manganese, nickel, and zinc are added to the composition.

Copper-zinc solder is considered one of the best. They are used for soldering most non-ferrous metals with a higher melting point than the auxiliary material itself. Solders with silicon or tin inclusions up to a half percent are safer for the human body.

Copper phosphorus materials are best avoided, and if they solder exchangers, then without stress such as shocks or vibration. The right solder is half the battle.

Heat exchangers are soldered with gas torches and soldering lamps. Before soldering, the desired place is cleaned with a fine-grained emery cloth and wiped with a solvent, and then heated. The area is heated with a hair dryer or a weak torch/soldering iron. At this point, the main thing is to get into the temperature corridor and consider the subsequent cooling. Barely noticeable damage can be identified by small spots of greenish hue.

Before heating, the water is drained and the rest is blown out with a compressor or a flexible hose. The hose is fixed by threading, if it has a coupling nut and design features allow it. If water is left in, it will take up some of the heat energy.

Solder is preferred in the form of wire or rod: the molten end when soldering is well immersed in the flux that will stick to it. If the wire itself is too intermittent or loose on the exchanger. the preheating was weak. After work, the soldered area is sometimes coated with heat-resistant paint. for better insulation.

For the next two weeks, check the brazed area daily for integrity. At the first detected leak it is worth to apply to a master. If it appeared in the first half of the month, it means that the soldering was of poor quality.

Fluxes are suitable for universal fluxes as well as solder flux gel. Avoid rosin, unusual options like aspirin, etc.

ARISTON E COMBI ONE, inside the boiler casing full review and strip down of the Ariston e combi one

Primary heat exchanger cleaning

Buy a heat exchanger flushing solution. it eliminates even heavy fouling. Use special brushes and scrapers to manually clean accessible areas inside and outside the exchanger. Remove the soot.

In a difficult situation, order a chemical flush. Masters will clean the exchanger through a booster, which will add acid. sulfamic for example. After a special treatment no old and stubborn deposits will remain. Or you can wash the heat exchanger yourself. To do so, we suggest using the following instructions.

Cleaning is also possible without disassembly. with hydrodynamic flushing. High-pressure fine particles will remove any contamination.

Replacing an old or broken heat exchanger

To pull out the exchanger for flushing or replacement, the first thing to do is to disconnect the boiler from gas and electricity supply. Then remove the front panel of the boiler and close the supply and return pipes. Drain the coolant through the drain cock on the boiler.

Further actions require more accuracy and concentration:

  • Remove the fasteners on the tube that supplies gas to the combustion chamber. Disconnect this nipple.
  • Release the combustion compartment cover from the appropriate utilities: pull aside the ignition and control electrodes.
  • Remove the sensors from the combustion chamber. Unscrew the fasteners on its cover and remove the latter.
  • Disconnect and remove the fan.
  • Remove the clamps from the pipes connected to the primary heat exchanger. Take these tubes off.
  • We detach the combustion chamber from the boiler wall and move it outside.
  • Unscrew the screws on the upper cover of the combustion chamber. Unscrew the top.
  • Remove the fasteners that hold the primary heat exchanger, and take it out.

Now we can replace the faulty exchanger with a new one. Mount it in the combustion chamber, separately from the boiler. Fix the upper cover on the perimeter with hardware and put it back in place.

Attach the combustion chamber back to the inner wall of the boiler. Fasten the front lid. Return all disconnected parts and removed components next to the combustion chamber.

Look at how the gaskets inside the gas boiler look like and before installing the heat exchanger change them on the necessary joints. After complete assembly, prepare the boiler for operation and make a test run.

The heat exchanger of Ariston boilers with a closed combustion chamber (manufactured since 2008) Bithermal heat exchangers of Ariston turbine boilers, depending on the year of manufacture, have a different design of heat exchanger length. In this case the heat exchanger with smaller dimensions is located in boilers manufactured since 2008.

Ariston Egis 24 FF Ariston As 24 FF

For the right choice, consider the photo with dimensions:

  • Size: length of the working part about the beginning and the end of the plates 220 mm, width 180 mm;
  • Material: copper with anti-corrosion coating;
  • Design: sockets of heating and hot water of different diameters, respectively, mounting elements of different sizes;
  • Complete set: heat exchanger in original package;
  • The set of gaskets and fixators are supplied separately;
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Conditions of return and exchange

The company carries out return and exchange of this goods in accordance with the requirements of the legislation.

Return date

Refund possible within 14 days after receipt (for goods of proper quality).

Return delivery of the goods is at the buyer’s expense.

At our company we have the following rules. First of all, the orders that are made through the site cart are processed, the rest by phone or by mail as far as possible. If the site does not have the product you need, specify the code you need in the Комментарии и мнения владельцев. Waiting for your order. Thank you. The company carries out return and exchange of this product in accordance with the requirements of the current legislation of the Russian Federation. The Consumer Rights Protection Law of the Russian Federation The goods can be returned or exchanged within 14 days after purchase (delivery receipt or consignment note), provided that the product has not been used. Within 14 days the spare part should be installed on the equipment by the representative of the service organization which has the authorization to work with the gas-using equipment of the raised danger (license, the permission, the valid certificate). There is a misconception about the condition of the return. Some buyers, buying parts for a boiler think. I will install it, if it works And if it does not help. I will return it back. We will have to clarify some misconceptions. “I will install, try”. this is already exploitation, even if the equipment has not resumed operation, due to faulty diagnostics. Therefore, the goods that have been in use, return and exchange are not subject to our Russian legislation.

Affordable Original Parts

At your service convenient directory, free consultations, sending a day in the day with the possibility of payment upon receipt. We give guarantees, advice, contacts of proven masters. We help to buy quickly and correctly monothermal (primary), secondary, biothermal heat exchangers for boiler Ariston that is especially actual during the heating season. We are waiting for your request and are always ready to help you choose a spare part.

The Ariston heat exchanger is the main component of the gas boiler. It is responsible for the uninterrupted availability of hot water, and heating water in the heating system. Depending on the type and model of water heater, there are different types:

The primary monothermal in its design is a coil, which is responsible for heating water in the heating system. This kind of part is installed on boilers with two circuits (one for water heating (secondary), the second, primary, for system heating), or on single-circuit boilers, which work only for space heating. In single-circuit, the primary heat exchanger is also called monothermal.

Secondary DHW heat exchangers for Ariston boiler are assembled from stainless steel plates that are soldered together. The more such plates, the greater the capacity of the part.

Bithermal is installed on boilers with one heat exchanger. It is responsible for both water heating and heating the heating system.

Care principles

In order for the heater to serve long and efficiently, it must be given proper attention. And often there is a dilemma than to clean the secondary heat exchanger of the gas boiler? What is the most effective and safe method?

The highest efficiency is given by special compounds. The flushing frequency is 2.4 times a year. It all depends on the amount of deposits and the hardness of water. If their indicators are modest, one or two treatments a year is enough.

For your information.

If the circuit breaks and can not be repaired, it is worth to replace it with a branded analogue.

It is not desirable to ignore secondary heat exchanger flushing, there is a high probability of such a picture:

  • The thermal capacity drops by 10-20%. The radiators have a lower temperature, and the boiler works at the same power.
  • intense gas consumption. This can be seen on the meter.
  • The noise level of water flowing through the HT increases.
  • The circulation pump functions more intensively.

If the operation is not carried out for more than a year, any or more of these signs occur. In this situation, it is necessary to wash the HT promptly: first with chemicals, then with mechanical treatment.

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