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Homemade boiler with shade. How to make an electric boiler for home heating with your own hands

It is quite possible to build a heating boiler in country houses that are not connected to the central gas pipeline even on their own. In this article, we will talk about how to make an electric heating boiler with your own hands. We will consider 3 available options for electric boilers - heating elements, electrode and induction.

What tools will be needed

To assemble a homemade electric heating and face the minimum of difficulties, you should have quality tools at your disposal.

For work you will need:

  • welding machine - it is most convenient to work with an inverter model;
  • cutter - if you do not know how to use a gas cutter, it is better to use a plasma cutter;
  • grinder - you will even need 2 models - a large one for a disk with a section of 230 mm and a small one for a disk with a section of 125 mm;
  • electric drill;
  • a hammer;
  • core;
  • roulette and compasses.

Electric boiler on heating elements

The scheme of an electric boiler with a do-it-yourself shade is the simplest to execute and has been known for quite a long time.

The principle of operation of the heating element boiler

The device of all household appliances in which heating elements (heaters) are installed is the same. When the power is turned on, voltage is applied to the heating element, which gradually heats up and transfers thermal energy to the liquid located around it.


The advantages of such devices:

  • a wide range of heating elements of various shapes and capacities;
  • possibility of use in any heating system with liquid heat carriers;
  • insulation is installed on the boiler body, so that voltage is supplied exclusively to the heating element;
  • do not require complex maintenance;
  • the heating level is very easy to control, even with a minimal set of automatic controls.

Among the disadvantages of a home-made electric boiler of this type are:

  • "gluttony" in the consumption of electricity, since 1 kW of power is required to heat 10 m 2 of area;
  • impurities in the coolant accumulate on the heating element in the form of scale, so it needs to be cleaned about once a year;
  • The heating element can only function in the presence of liquid, it is recommended to install an idle speed sensor with it.

The order of assembly of the boiler with heating elements by their rivers

Before you make an electric boiler with your own hands, you should take care of having a reliable power line. Only equipment with a power of not more than 6 kW can be connected to ordinary networks with a voltage of 220 V and a frequency of 50 Hz. If a more powerful boiler is required, a three-phase wiring and a separate input must be made for it.

So, we begin assembling a home-made electric heating boiler from a pipe with a cross section of 159 mm with a wall thickness of 10 mm. This pipe will serve as the body of the boiler. For it, you will need either a factory-made hemisphere with a section of 159 mm and a thickness of 10 mm, or sheet metal with a thickness of 8 mm or more of a similar section.


The roof of the boiler, into which the heating elements will subsequently be embedded, can be made from a channel 8 mm thick.

We cut a coupling with a section of ¾ inch into the dome of the boiler. We will screw the drain valve into this coupling. In addition, you will need 2 pipes with a section of 1 inch for inflow and return. The thread on the nozzles can be done both internally and externally. It all depends on which one you prefer to work with.

To relieve excess pressure, it is necessary to prepare a branch pipe for the tie-in of the bypass channel. You will also need 3 adapters, into each of which a heating element for an electric boiler will be screwed. Another adapter will be needed for the temperature sensor. In addition, you will need holders for automation.

Please note that it is advisable to cut the threads on the pipes and adapters immediately.

Prepared threaded pipes, the same as on heating elements, must be immediately screwed into adapters. This is necessary so that the thread is not damaged during welding to the arch. To mark the places where the heating elements are inserted, the outer diameter of the pipe must be divided into 6 equal sectors according to the size of the radius. Then we draw three identical sectors strictly at an angle of 120 °.

The next step is to start cutting. Having finished with the markup, using a plasma cutter, we cut out holes for the nozzles for heating elements. They should be cut only along the outer contour. With all other nozzles, this does not matter in principle.


Let's start welding. We first intercept the pipes at several points so that they do not lead. Then we check the accuracy of the location, if necessary, lightly tap with a hammer, and then we perform a continuous seam. It is important that the adapters for heating elements in the electric boiler for heating with their own hands protrude 1 cm above the surface of the boiler roof.

We proceed to cutting the arch from the channel. In its center we make a hole for the air valve pipe, after which we weld the pipe itself. On the side we make a hole for the temperature sensor and also weld the pipe under it.

All protrusions, burrs and welding residues must be carefully cleaned with a grinder. The inner surface of the platform of the vault must be perfectly flat. The pipes for installing heating elements will only protrude from the outside by 1 cm.

We got a fairly powerful do-it-yourself electric boiler with 3 heating elements. If you need a simpler unit, according to the same principle, it can be assembled for 1 or 2 heating elements.

Assembling a heating boiler on electrodes

Devices of this type have been actively used only in the last 10-15 years. These are more technological devices, compared with heating elements.

Design

In electronic electric boilers, the liquid plays the role of a heating element. A self-assembled electric boiler of this type is a metal case, inside of which there is an insulated steel electrode.


0 is applied to the body, and phase is applied to the electrode. When the voltage is applied, the water ions begin to oscillate at a frequency of 50 hertz. In this case, the liquid gradually heats up. Due to this property, such boilers are also called ion boilers.

The dimensions of the electrode boilers are small. They can be made from a pipe with a cross section of up to 320 mm and a length of up to 60 cm. However, an electric boiler for heating a house with your own hands can be made much smaller.

Advantages:

  • small size, thanks to which the ion boiler can be placed even in a small apartment;
  • the absence of the so-called "dry run", which guarantees the boiler's serviceability, since it will not work without liquid inside;
  • resistance to voltage drops;
  • high heating and cooling rate, which means easy adjustment;
  • economy in electricity consumption in comparison with devices on heating elements.

Among the disadvantages of such boilers are the following points:

  • an important condition for the effective functioning of the electrode boiler is the level of thermal conductivity and the quality of the coolant;
  • the device must be reliably grounded, since there is a high risk of electric shock;
  • it is important to exclude the possibility of air entering the system, otherwise the electrodes will become unusable due to corrosion.

Instructions for assembling a homemade electrode boiler

As a housing for an electric heating boiler with our own hands, we use a pipe with an internal section of about 50 mm and a length of 40 cm. In addition, you will need a solid rod with a diameter of 20 mm and a length of 30 cm, as well as two adapters with threaded internal threads. At the end of the rod, we drill a blind hole with a thread for a bolt Ø10 mm.

We prepare pipes. 1 we will weld at the end of the pipe, and the other at the side. In order for the side pipe to fit perfectly to the pipe, it is cut with a grinder, and then polished with a round file.

Cut holes for pipes. If there is no cutter, then many small holes can be drilled around the circumference. The work is brought to the ideal with a needle file and a round file. The hole for the side pipe must be located 10-15 mm from the edge of the pipe.

The next step is to weld the pipes to the pipe. To prevent them from being led, first they do spot welding in several places, and then they put a continuous seam.

We prepare the platform for the electric boiler. To do this, you can take a sheet of fiberglass 2 cm thick and cut a piece 120 × 120 mm with a hacksaw. Then in this platform it is necessary to drill one hole in the center, and four - around the perimeter. The cross section of the holes should be 10-12 mm.


Through the holes around the perimeter, the fasteners of the boiler body will be passed, and the central hole is designed to fix the steel electrode.

We proceed to fixing the body for the boiler on the platform. Four Ø12 mm nuts can be welded onto the housing on 4 sides to ensure a secure fit. Bolts Ø10 mm will easily pass through them.

Such nuts need to be welded with a slight indent from the platform. To ensure it, it is necessary to screw nuts of suitable size onto the bolts, thread them into wide nuts, and fix them again from below with smaller ones. Thus, it will be easier to perform welding work.

At the last stage, we perform the final assembly of the boiler. To do this, cut out a rubber gasket with a cross section slightly larger than the outer diameter of the boiler. In its central part, we make a hole and pass the electrode through it. Then we install the case on the platform and fasten it.

Boilers of induction type

Among all the options for assembling heating with an electric boiler with your own hands, making an induction type model is the most innovative.

The principle of operation of an electric induction boiler

If you omit the details, then the operation of the induction boiler is based on heating the coolant by means of a magnetic field.

Among the advantages of such units:

  • high efficiency;
  • safety;
  • the possibility of using any coolant;
  • lack of scale.

  • high cost of factory boilers;
  • the complexity of the structure of the automatic control unit. Without preparation, it will be difficult to assemble it.

Instructions for assembling a homemade induction boiler

It is worth noting that often the instructions on how to make an induction-type electric boiler are so complicated and contain such labor-intensive drawings that self-assembly of the equipment looks rather doubtful. However, we found a non-standard solution.

Before you make an electric boiler for heating yourself, you will need to purchase a 2.4 kW induction furnace and 3 meters of profiled pipes Ø25 × 50 mm with walls 2.5 mm thick.

If we consider how this design will work, then first we assemble a flat container from the profile - liquid will move along it. And then we fix the induction stove to the pipe and connect it to the network. Everything together will look something like a saucepan on the stove.


Pipe cutting must be done as accurately as possible. It will take several pieces of 400 mm each, carefully cleaned of burrs at the ends.

Since the liquid inside such a boiler will move like a snake, it is advisable to take an even number of pipe pieces so that the inlet and outlet are located on the same side - it is more convenient to connect them to the heating circuit.

Since the profile pipes are not perfectly even, they must first be joined with sharp edges by blunt edges and numbered so as not to be confused later.

At the next stage, the joints between the pipes must be boiled. We lay the structure on a flat surface, tighten it with a clamp and weld it. First, we do spot welding so that the structure does not lead, and then we perform capital seams.

Now we need to close the end part of our container. For this we use a steel strip cut from profiled pipes. We perform welding in a similar way - first pointwise, and then capitally.


On the opposite side, we also weld the strip, not forgetting to install the inlet and return pipes on the outermost pipes. To ensure the maximum contact area of ​​​​the container with the stove, all seams must be carefully cleaned.

So that our boiler can be hung on the wall, 2 corners must be welded on its back, into which the induction stove will be placed, as well as loops for hanging.

The last stage of work is painting. You can use heat resistant paint. This completes the assembly work. You can hang the boiler and connect it to heating and electricity.

When buying an induction oven, make sure that it is designed for continuous operation. Otherwise, you will need to restart the system every 2 hours.

Results

Each of the listed models is fully functional and reliable. Everyone will make their own choice in favor of any of them. The main thing is to carefully consider the work and, in case of difficulty, consult with knowledgeable people.


Considering the fact that an electric boiler is mainly installed not as a main, but as an additional heater for heating, it would be quite reasonable to make an electric boiler for heating a house with your own hands. The design of such units is quite simple, but the functionality is in no way inferior to serial models of leading manufacturers of heating equipment. In this article we will tell you how to make an electric boiler yourself at home. Let's imagine a step-by-step algorithm, following which you can make a working and reliable electric boiler for heating your home with your own hands.

Why make a homemade electric boiler for heating

A homemade electric boiler can be of any shape.

Why not? If the hands are in place and there is an irresistible desire to use them in the right direction, then why not make a home-made electric boiler for heating with your own hands instead of buying it? As you know, the price, even the most affordable heating element heater is quite high. For example, a more or less normal heating element boiler costs from $100. If you make it yourself, then the price will be no more than $ 40, while there are no particular difficulties. And the electrode heater, which costs about $ 150, can be made by yourself for a penny, using what is at hand.

So, we can make two options for a self-made electric boiler for heating:

  • heating element;
  • electrode.

At the same time, their functionality will be in no way inferior to the units manufactured at the production facilities. There is another type of boilers that heat the coolant with a magnetic field. These are induction heaters. Making a full-fledged induction electric heating boiler with your own hands will not work, that's for sure, but you can still use the principle of induction to heat the coolant.

If you are not sure that you can make an electric heating boiler with your own hands, then it is better not to take it. Making mistakes is fraught not only with the fact that as a result you will get an incapacitated unit, but also risk burning all the wiring in the house.

Another important point that applies to absolutely all electric boilers is the presence of grounding without fail. Do not forget about this in any case if you have already decided to make the heating of a private house with an electric boiler with your own hands, otherwise you risk getting a current discharge of such strength that it will not seem enough.

Do-it-yourself tenovy electric boiler for home heating

A tenovy electric boiler for heating with your own hands can be made from a tank of any shape. In such a unit, heating elements heat the water. They will need to be bought in the quantity that is necessary in your particular situation. we have already told. Usually they put two or three heaters. The cost of one ten is 10 dollars. They are already equipped with a thermal head with an external thread, with which they will be screwed into the tank body.

Diagram of a self-made electric boiler.

Consider how to make a homemade electric heating boiler on heating elements from a pipe. This will require:

  • steel pipe with a diameter of 150 mm;
  • two round plates with a diameter of 150 mm;
  • three nozzles with a diameter not less than the section of the pipes of the circuit (from 25 mm);
  • heaters;
  • nuts;
  • automatic air vent;
  • ball valve.

To make an electric heating boiler for your home with your own hands, you need to choose the right size. The length of the pipe, which will be the body of our heater, must exceed the length of the heating elements with a good margin. The ends on both sides are welded with plugs. Branch pipes are welded into the side part in the amount of two pieces for the supply and return of the coolant. Now you need to decide how the heaters will be located after. Naturally, they will be in a vertical position, the only question is which side they will be screwed into. There are two options:

  • bottom;
  • above.

If the heating elements are screwed in from below, then during operation, in order to replace the burned-out heating element, it will be necessary to drain the water from the boiler, and then, accordingly, . But such an arrangement ensures that the heating elements will be completely immersed in the coolant. Such home-made electric boilers for heating a private house are more reliable. As you know, if part of the heating element is not in the water, then the tungsten coil will burn out.

If you place the heating elements in a home-made electric boiler for heating the house in such a way that they are screwed in from above, then after replacing the burned-out heating element, you will not need to add water to the system. But this arrangement has its drawback, since air will accumulate in the upper part of the boiler.

Due to the formed air pockets, the heaters will overheat and burn out. Therefore, to remove air to the outside, an additional automatic air vent must be installed in the upper part. In this case, the air problem will be solved.

Choose for yourself how it is more convenient for you to make electric heating boilers with your own hands, both options are correct. So that the heating elements can be screwed into the body, you need to cut holes of the desired diameter and weld nuts on them. The inner thread of the nuts must match the outer thread of the heaters. Additionally, a pipe for draining the coolant is welded in the lower end. After that, threads are cut on all three pipes (supply, return, drain). A ball valve is screwed onto the drain pipe.

That's all, the manufacture of a homemade boiler is finished. It remains only to install it on the heating circuit and connect it to the network. Before you make heating with an electric boiler, you need to consider what voltage is in the network of your house (220 or 380 volts). The connection scheme of the heating elements depends on this. You also need to resolve the issue with the boiler control unit. The minimum that is required is thermostats that will take the temperature of the coolant. Based on the thermostat data, the control unit will turn the boiler on or off. If desired, you can add certain options, depending on the situation. How to make a heating electric heating boiler with your own hands, video:

Do-it-yourself electrode electric heating boiler

An electrode boiler heats water by moving ions between positively and negatively charged electrodes. Details about we wrote earlier.

In a homemade electrode boiler, the anode must be isolated from the cathode.

A homemade electric boiler will cost quite inexpensively, depending on what you have available. The issue price will be low, even if you have to buy absolutely everything. For work you will need:

  • pipe with a diameter of 50 mm;
  • metal bar with a section of 20 mm;
  • two couplings with internal thread;
  • flat flange;
  • any dielectric material;
  • rubber for sealing;
  • nuts, bolts.

So let's get started. How to make an electric heating boiler with your own hands? We take a tube and weld a coupling into one end. We place the second coupling in the side part closer to the opposite end, on which the flange is welded. Then we drill a hole in a metal twig and cut a thread in it. A bolt will be screwed into this hole, with which the buted electrode is attached to the dielectric. A dielectric is a material that does not conduct electricity. It is necessary to isolate the electrode from the body, otherwise a short circuit will occur.

As a dielectric, you can use a thick heat-resistant plastic, for example, such as textolite.

To keep everything neat, we cut out a circle from the textolite the size of the existing flange. Then holes are drilled in the dielectric for attaching to the flange and one hole in the middle for attaching the electrode. The bar is screwed on before the unit is assembled. Between the textolite and the flange, you need to put a rubber gasket to seal the joint and tighten everything with bolts and nuts.

For convenience, two bolts must be welded onto the body, to which zero will be applied and grounding will be attached. The earth must be. We connect the phase (plus) to the bolt that secures the electrode. All wires must be insulated. Before connecting the boiler, it is necessary to carry out salt preparation of the coolant. Also, you can not do without an elementary control unit with a temperature sensor. Do-it-yourself electrode electric boiler for heating, video:

Homemade induction heating boiler

It remains to consider induction heating with an electric boiler. How to make an induction boiler if you are not an electrical physicist? It will be difficult, because you need to assemble not only the design of the device itself, but also the electronic circuit, which is already much more difficult. You can't do without deep knowledge in physics and skills in working with electrical circuits. Yes, and it’s not worth it, because there are several simpler ways to make an electric boiler with your own hands, which we discussed above.

The manufacture of an induction boiler can only be justified if you already have an induction heating element. In this capacity, an induction hob is ideal. The point is as simple as two and two. You need to make any tank that will act as a heat exchanger and put it on an induction hob. Or, in some other way, ensure the contact of the plate with the heat exchanger in a vertical or horizontal position. Turn on the stove, it heats the tank, and that, in turn, gives off heat to the water. Install the temperature sensor on the coolant, which will turn the hob on and off.

In summer, when the heating is not working, the hob can be used for its intended purpose - to cook food on it. It is easy to carry from place to place, so it is convenient to use this method of heating the coolant in the country. If you have a car, then you can take the induction hob with you even during the heating season, because cases of theft in summer cottages are not uncommon. In addition, antifreeze can be safely used in such a circuit.

Electrical appliances are often used to heat the coolant in water heating systems. There are ready-made electric boilers on sale, but if necessary, you can make a home-made electric boiler. Such units are distinguished by reliability and efficiency. The efficiency of the heating electric boiler is quite high. An additional advantage of a home-made unit is that it takes up little space and does not require a separate room for its installation.

What is needed to assemble the boiler?

Since there are no mechanical components in such a device, it is easy to do it yourself. Also, thanks to this, it rarely fails and is easy to use.

If you decide to make an electric boiler for heating with your own hands, you will need the following parts and tools:

  • angle grinder (you can use a grinder instead);
  • multimeter;
  • for welding pipes, you will need a welding machine (the best option is an inverter-type unit);
  • grinder ordinary;
  • steel sheet with a minimum thickness of 0.2 cm;
  • to connect the boiler to the heating system, you will need adapters;
  • heating elements - 2 pieces (regular heating elements are needed);
  • a piece of steel pipe with a diameter of 159 mm and a length of 60 cm.

Separately, it should be said that you can make floor and wall types of heating equipment with your own hands. Such boilers can be single-circuit or double-circuit. According to the principle of operation, they are induction, heating elements and electrode.

How to make a heating element boiler

If you are interested in how to make a 220v electric heating boiler with your own hands, then the following assembly instructions will help you figure it out:

  1. In order to properly connect a home-made device to the heating system of a private house, you need to make special pipes. To do this, prepare three steel pipes. You should end up with two 1.25" pieces and one 3" piece.
  2. After that, we make a container for the tank. To do this, you need a large diameter pipe. In this tank, the coolant will be heated. For this purpose, two holes are cut out on the side of a pre-prepared pipe section. Their edges are well cleaned from burrs and notches. Two previously prepared pipes are welded to these holes. Then two circles are cut out of a piece of sheet steel. Their diameter should be 2-3 mm larger than the diameter of the pipe under the tank. These round blanks are welded to the ends of the heating vessel. Places of welding are well cleaned and polished.
  3. In one of the circles welded to the end, a hole with a diameter of 1.25 inches is cut. A pipe with the same cross section is welded to this hole. Two more holes are cut in the bottom of this cylindrical structure. Their edges are also carefully cleaned and polished. The first heating element is inserted into these two holes. An additional heating element will be installed in a previously welded pipe from the other end.
  4. Then the manufactured boiler must be connected to the heating system of the building. To connect, we use two branch pipes in the side part, which were welded in the first step.
  5. Now we install the second heating element in the pipe on the top of the tank. Its power should be slightly less than that of the main heating element. However, an additional heating element must have a thermostat to regulate the temperature of the coolant.
  6. After checking the correct connection of all the details, the home-made heating element boiler is ready.

Advice! To connect a home-made structure to the power supply, it is better to use the help of a specialist, since without experience it will not be possible to carry out the work correctly and most importantly, it will not work out safely.

After connecting the electric boiler to the power supply networks, its operability and correct operation of the entire heating system are checked. To assess the temperature of the coolant, you should use a multimeter. The temperature of the water in the pipes after leaving the boiler must be within 70 degrees.

Assembly and connection of equipment

If you still decide to independently connect a home-made electric boiler to the power supply, then this should be done in compliance with the following recommendations. Since powerful heaters are installed in the tank, you will need to equip a three-phase input.

For this purpose, the following devices are mounted in the electrical panel:

  • toggle switch;
  • machine;
  • fuse;
  • temperature sensor;
  • relay;
  • control Panel;
  • protective devices;
  • magnetic starters.

A ground loop is required. To make it, you need to weld a bolt to a piece of reinforcing bar. After that, the rod is driven into the ground in the underground of a residential building. A wire coming from the electrical panel is attached to the bolt.

Types and principle of operation

Having decided to make an electric boiler for heating a house with your own hands, you need to understand the varieties of such devices. It is possible to make electrode and induction types of boilers. There are other varieties, but they are only modifications of these basic types. The second name of the electrode boiler is the ionic aggregate. It is so called because in the device electrical energy is converted into heat.

Electrode boiler

The self-made electrode heater has a compact size, so it is easily fixed on the pipe and does not need a separate place for installation on the floor or hanging on the wall. For greater strength and safety, it is fixed on two self-tapping screws, but if desired, you can not use them.

Outwardly, the whole structure looks like a pipe segment 400 mm long. On one side, the pipe is tightly welded, and on the other, a steel rod sticks out of it. A branch pipe is installed on the side or in one of the ends for circulation of the coolant through the pipes.

A do-it-yourself heating boiler, the manufacturing process of which we described above, must have two branch pipes on the side for connecting a return and supply pipeline with a circulating coolant.

There are several options for the location of these nozzles:

  1. One piece of pipe can be installed in the end of the device, and the other is welded to the hole in the side. Thus, it is installed perpendicular to the axis of the first branch pipe.
  2. The second mounting option involves the installation of two nozzles in the side of the unit. It turns out that both pipe branches are installed parallel to each other, but perpendicular to the main heater tank.

Homemade heater has the following principle of operation:

  • as part of the coolant, positively and negatively charged particles (which are called anodes and cathodes) constantly circulate;
  • when a voltage is applied, the ions rush to the electrodes with the opposite charge;
  • since the polarity of the electrodes is constantly changing at a frequency of 50 times per second, the ions move in one direction or the other;
  • such a chaotic movement of ions causes friction of the particles and their heating (because of this, the temperature of the coolant rises).

Having made an electric boiler for heating with your own hands, you should not forget that it has its drawbacks. The disadvantages are that the coolant is constantly energized, therefore, before being supplied to the heating circuit, it is thoroughly cleaned of salts and other impurities that can settle on the walls of the pipelines and the heating element.

Attention! In systems with electric boilers, it is forbidden to use antifreeze as a coolant. Purified water is used for these purposes.

induction unit

The principle of operation of electrical units of the induction type is based on heating the coolant by means of a magnetic field, which is formed by an electric current.


These devices include the following components:

  • coil;
  • heater body;
  • core (here the coolant is heated);
  • insulation.

In induction-type boilers, the heat carrier is not energized, as in electrode-type units. This is ensured by the complete isolation of the liquid medium from the elements that conduct electricity.

The copper coil winding is connected to the network through an automation system. After that, a magnetic field is formed in the coil, which heats up the pipe, which acts as a core. Since a coolant circulates inside it, heat is immediately transferred to the liquid. During operation, the body of the device does not heat up. For this purpose, a layer of special insulation is provided in the design of the case.

The core itself has a curved configuration to ensure a longer passage of the coolant through this area in order to heat it up sufficiently. The service life of an induction boiler reaches 25 years. There is simply nothing to break in this unit, so it will last until the core pipe is damaged by corrosion.

Boiler start

Before a test run of the heating unit, they check how tight all the nodes and connections are, as well as the correct assembly of the electrical network. After that, the coolant is poured into the system. Be sure to make sure that there are no pinched or broken wires in the network, because there is a lot of current in a three-phase network. All wire connections must be well insulated.

Before starting the unit, it is well cleaned of contaminants. For the correct and uninterrupted operation of such a heater, you need to protect yourself from power surges. For this purpose, an RCD is installed in the network.

A test run of the boiler is performed in the following sequence:

  1. The purified coolant is poured into the system.
  2. It is important that air does not accumulate in the circuit, so it is lowered using Mayevsky cranes. Such fittings should be installed on the upper radiators in the system.
  3. We turn on the electric boiler and wait for the coolant to heat up.

In order for systems with electric boilers to work efficiently and have a high efficiency, pumping equipment is installed in them to circulate the coolant. Due to good circulation, the heat carrier will warm up evenly. The circulation pump is recommended to be installed on the bypass so that it is possible to switch to the natural circulation of water in the system.

When constructing circuits with a gravitational current of the carrier, the return pipeline is laid with a slope towards the heating boiler. Due to this, the cooled liquid will quickly flow into the boiler.

A high-quality heating system in a house or cottage located far outside the city is considered by the owner to be the main object designed for effective life support in the cold season. All this is understandable, since it is simply impossible to live in a building that is not heated in winter, especially if there are children in the family. Therefore, you should definitely buy or make an electric boiler with your own hands.

Reasons for making a boiler on your own

Now the market, which sells a variety of heating equipment, offers a fairly wide range of various boilers. All of them are produced by different manufacturers, so there are no problems when choosing.

Present operational qualities of such equipment are on top. The disadvantage is the cost, because those who cannot afford this equipment decide to make it themselves. Answering the question of how complicated this process is, it can be noted that it is relatively not simple, but despite this, a person who is familiar with welding work has no problems with the independent manufacture of equipment, you can quickly and easily make an electric boiler with your own hands.

Important! Doing an electric boiler with your own hands will help save material resources by not having to purchase equipment from a serious manufacturer and by refusing the services of specialists.

The main structural elements of boilers

Before you make an electric boiler on your own, you should carefully familiarize yourself with its main components:

  • The boiler itself
  • Additional equipment for inserting regulators and sensors.

Among them, the greatest importance is given to such a device as a heating element. It is he who is designed to convert standard electrical energy into high-quality thermal energy. In fact, this is a special tubular electric heater. As for the boiler, it is possible to make it from a special pipe made of high-quality metal or some other container. Equally important are a variety of additional structural elements, through which you can greatly facilitate the process of using the boiler.

Modern models of such equipment are sold, as a rule, already fully equipped. Among the main elements are:

  1. Expansion tank.
  2. Quality filter.
  3. Circulation pump.
  4. Safety valve.

Boilers that have all the required structural elements can be made independently, it is enough just to know and observe a few basic important points.

The principle of operation of the boiler

A high-quality and functional boiler in the heating system operates according to the principle of operation, similar to other boilers, but operating on other alternative fuels. The essence of its action lies in the fact that the heating element effectively heats the coolant, that is, water, which is intended for heating radiators. As in other heating systems, a special forced method of circulation processes is used, which is carried out by means of an installed pump. In addition, natural circulation may be involved.

Important! Close attention must be paid to the fact that most professionals advise not to install a special circulation pump in the system. In other words, a forced circulation process cannot be used if an electric boiler is present.

The main options for modern electric boilers

There is more than one option for the design of a boiler for electric heating. The simplest is the built-in heating element. It is necessary to pay attention to the pipe where the heating element is mounted. It must necessarily be a removable category, as for the diameter, it is better if it is larger than other similar elements.

A removable pipe is required for repair work if the heating element fails. In addition, a pipe that has a built-in heating element can be classified as a special compact boiler. It should be noted that this system has a high efficiency.

Equipment of such a plan can be made from a special pipe made of steel. Here, the smaller the boiler, the more efficiently it will carry out its work. There is no need to heat excess water and, accordingly, spend a large amount of kilowatts of energy.

For effective heating of a relatively small house of two or three rooms, it is enough to take a pipe element with a diameter of 220 mm, and the length indicators should be only half a meter.

On both sides, the pipe must be hermetically welded with special steel covers. In this case, a special hole must be made in the upper element, which will be designed to connect the outlet pipe. Hot water will be transported through this pipe to the installed radiators. In the lower element of the constructed boiler, exactly the same hole is made on one of its sides, then a pipe will be connected there, but with cool water.

For such a design, you can use a heating element with power parameters of 1 kW. It provides heating from a standard network of 220 volts. As for the heating element itself, it can be quickly installed into the cover of the new boiler located at the bottom or from one of their sides. The main thing is that it should be the side located on the other side of the pipe, cold water usually enters it.

Important! An electric boiler of such a plan is able to work around the clock. If additional automatic equipment is installed in its design, it will be possible to quite easily maintain the required temperature regime. By the way, it is usually set by means of a special regulator.

The installation of a regulator is mandatory, since it is he who is able to effectively protect the equipment from overheating. In addition, the installed automation provides an optimal opportunity to save material resources on the total amount of energy consumed.

The main stages of work on the creation of the boiler

There is a certain sequence of work that is recommended to be followed in the manufacture of an electric boiler:


After that, you can proceed to the technological process. By means of a conventional welding machine, a small container is attached to one of the ends of the pipe. On the reverse side, an electrode is built in, which must necessarily reach the bottom. After that, the pipe is welded on both sides.

Important! Before welding, it is recommended to fill in about 0.7 liters of water, only then mount the electrode.

The pipe is fixed in the wall surface with a slight slope, after which grounding is done. After that, a phase is applied to the body. The next step is to turn on the usual voltage, equal to 220 watts. The power of this device will be regulated using a pressure gauge, which must be connected through a special three-way valve.

The resulting boiler will heat up to a temperature of 120 degrees. At the same time, the level of isolation of the system completely eliminates the formation of corrosion in the inner part of the pipe. This significantly increases the total operating time of the device, moreover, you can not control the overall composition of the liquid.

Installation of the manufactured boiler

Before you install the boiler, you need to choose the most suitable place for it. It should allow you to correctly and easily perform the following manipulations:

  1. Distribution of the necessary pipes of the heating system.
  2. It is convenient to connect.
  3. Control the work process.
  4. Maintain and make repairs as needed.

To achieve this goal, it is necessary to first draw up a detailed layout of the radiator and the wiring of all pipes belonging to the heating system. In addition, it is very important to choose the best option for the location of the manufactured boiler. As a rule, such equipment has a compact size, because they can be placed on the ground floor of a residential building, many are installed in the basement.

Experts recommend mounting heating elements on the wall using special dowels. If we are talking about electrode boilers, they need to be installed on the pipes of the heating system, they can also be fixed to the wall by using clamps. Due to their large weight, induction boilers are recommended to be mounted on the floor, strictly in an upright position.

The process of connecting a do-it-yourself electric boiler is carried out strictly to a separate machine, which is located in the electrical panel and to the ground loop. The shield must be designed for the highest boiler power, and it is advisable to entrust the quality of the ground loop to a specialist.

Summing up

It is quite simple to make a high-quality electric boiler with your own hands and save material resources. All that is required is to simply approach the assembly process as responsibly as possible. The quality of the work carried out is very important, since the operation of the boiler is based on the circulation of water, which, if there are problems, can leak. This will automatically lead to serious waste of material resources. A responsible approach to the implementation of an electric boiler will lead to the fact that it will work as long and efficiently as possible.

To create an efficient heating system, a modern heating boiler is required. It can be a device that runs on electricity, solid fuel, gas. Today there are also a large number of combined models. However, having a sufficient level of knowledge, the necessary materials and a scheme, you can easily create a home-made electric boiler for heating.

In fact, the boiler is a metal tank in which a thermal electric heating element (TEN) is located. The most common are models with a capacity of 6 kW - this is quite enough for heating a small, well-insulated house or apartment. However, it is most rational to use such a boiler as an auxiliary boiler in the presence of a main boiler that runs on solid or liquid fuels. If the system does not provide for the presence of a boiler of a different type, you can use two or more electric boilers - this will increase the heated area.

A modern home-made electric heating boiler, even a self-made one, can perfectly maintain the set temperature level in the room automatically.

To do this, it is necessary to equip it with several sensors and a simple automatic unit. The use of automation is a great way to reduce energy costs, since the boiler will be able to maintain the temperature in the room at a programmatically set level - thus, excessive heating of the coolant will not be carried out.

Air heating control in manual and automatic modes

Manual operation. Toggle switch T must be turned off. Next, click Start. The system checks the air temperature in the room. If it is lower than the adjustable value (closed contacts TP), the magnetic switch is automatically activated. It blocks (temporarily) the Start button and starts the heating element. There is a gradual heating of the coolant, as a result of which the temperature in the room rises. As soon as the sensor shows that the temperature is within the established limits, the contacts of the TR and the magnetic switch of the heating element open. The heating element turns off, the Start button is unlocked.

Auto mode.Toggle switch T should be turned on. This will allow maintaining a constant temperature in the room, limited by the zone of operation of the TP contacts. If the air temperature falls below the specified limit, the boiler automatically turns on. Thus, the coolant is heated, which contributes to an increase in the temperature in the room. When the set temperature is reached, the circuit breaks, the electric heating boiler with its own hands goes into inactivity. If necessary, the inclusion is repeated.

Features of connecting homemade electric boilers

Even if the do-it-yourself electric boiler for heating is auxiliary, it must still be located next to the main boiler. In this case, the combination of boilers is carried out using bends.

The electrical control board must be installed on a special shield isolated from the coolant. At the same time, when creating a boiler yourself, you also determine the components selected for the board.

In order to comply with all installation rules, which, in turn, serves to ensure the further safety of the equipment in operation, it is advisable to invite an electrician.

It is especially important to do this, given that even individual "kulibins" can not always correctly ground an electrical appliance. In addition, it is important to regularly check the safety of the system - invite a specialist who can take the necessary measurements and issue an appropriate certificate on the condition of the operating heating element.

It should be taken into account that individual sensors, in particular, the room air temperature sensor (TR-OMb-OZ), must be installed in a heated room. If there are several such rooms, then the sensor is installed in the one that, in your opinion, has an average level of heating. It should be noted that the proposed scheme of the heating boiler is designed specifically for this type of sensor - and if you replace it, part of the elements of the electronic control system must also be replaced.

Homemade electric heating boilers of this type will easily serve you for more than 10 years. However, it is important to understand that in order to achieve such a service life, it is necessary to follow some installation rules, and, of course, operating rules. Here are the most important ones:

  • under no circumstances should shut-off valves be installed before or after the boiler.
  • both the electrical panel and the electric boiler itself; do-it-yourself heating must have reliably grounded cases;
  • for safety reasons, dielectric mats must be placed in front of the electric boiler and in front of the control panel;
  • before starting operation, it is necessary to obtain permission to use this type of equipment from the relevant inspector of the State Energy Supervision Authority;
  • Installation and subsequent repair of the boiler may only be carried out by a qualified electrician.

Do-it-yourself electric heating boilers - drawings: