Self-made electric boilers by own hands

Heating equipment that converts electrical energy into heat energy is produced today by different companies. But if you want to save on buying, then you can make such a device yourself. For housing outside the city, such a device will do the best, in addition, its design will not be difficult.

Making a heater

Homemade electric boilers have an iron pipe, coolant nozzles, metal side plugs, connecting terminals, as well as gaskets made of paronite or rubber. If you have the skills of working with a welding machine and the corresponding equipment, the design can be changed by welding the circles of metal instead of the plugs.

Sometimes the water heater has a coolant outlet upward, in which case the branch pipe will replace the plugs. During manufacture, the inner electrode must be isolated from the housing using fluoroplastic sleeves. It is possible to make glass-stenolitic plugs on its own.

Homemade electric boilers are good because the master will have scope for upgrading and improving the design with the use of improvised materials. However, it is not necessary to get carried away and make an assembly of different metals, because they can form a galvanic couple, in this case scale will grow on one electrode.

Assembling

Once you understand what materials are used to make the boiler, you can begin to prepare the parts. To do this, perform the marking by cutting off the pipes that will form the basis of the branch pipes and housing. In them, with the help of an angle grinder, it is necessary to make a selection in the form of a sphere for fitting to the cylindrical surface of the housing. In the latter, it is necessary to make holes in the places where the nozzles are installed.

The thread can be cut with a tap or a die for a pipe thread. If you do not have such devices, then we recommend that you contact the turner. With this specialist, you can prepare a fluoroplastic sleeve, plugs and an inner electrode. Ready-made nipples and terminals are welded to the body to connect the wires.

The electrode should be fixed in the plug, it should be installed in the electrode boiler. The plugs are twisted and tightened well. Homemade electric boilers at the last stage are usually painted with enamel. However, one must choose one that is resistant to temperatures up to 120 ° C.

The final stage

Self-made electric boilers after assembly should be checked for permeability of welded joints. The unit is filled with water, but this will not be enough, because the working pressure in the system sometimes reaches 2 bar, while the emergency pressure is 3 bars.

Seams are cleaned of slag, and then covered with soap foam. Then, an overpressure should be generated inside the housing using a compressor. If the body has poorly welded seams, then in these places there will be bubbles. After completion of the test, homemade electric boilers can be located in the furnace and make connections to the system.

Transferring equipment into operating mode

Before starting the boiler, it is necessary to connect the power and ground wires, fill the system with water and set up the equipment. It needs to be put into operation by adjusting the composition of the coolant. For this, tap water is sometimes used, but it has some harmful inclusions that promote the formation of scale on the walls of the electrodes. As the most appropriate option, the initial filling of the system with distilled water is used. If there is not one, you can use a tap or rain.

Preparation of materials and devices for adjustment

Homemade electric heating boilers should be adjusted, but it is necessary to prepare materials and devices. Among them:

• soda;
• Stirring tank;
• ammeter;
• syringe;
• Current clamp.

Due to the fact that the described equipment is manufactured independently, it is possible to take into consideration the approximate power of 4 kW, with the current in the circuit being 4000 W / 220 V = 18 A. An ampere meter must be connected to the power wires, then the equipment is connected to the network for heating the coolant in system. In this case, the tank should be prepared with a solution of soda, using a ratio of 1 to 10.

This composition is recommended to be added to the system through an open expansion vessel or other place using a syringe. As soon as the connection is made, the first ammeter readings will be less than 18 A.

In a coolant in small portions, you must start adding a solution of soda. The system must be well heated at the same time. If you used distilled water, this process takes a long time, so it is recommended to be patient.

As soon as the mark on the device is between 16 and 17, the refilling should be stopped, otherwise you can cause an excessively high concentration, which will cause the boiling and ejection of steam. In the end, the plastic pipes will simply rupture.

Preparing for the production of an electric ion boiler

The homemade electric boiler for heating can be ionic, for it it is necessary to prepare not only the welding machine and electrodes, but also:

• Iron tee;
• Zero wire;
• Earthing terminals;
• Insulation for terminals;
• Electrode insulation made of polyamide;
• Clutch;
• A pipe made of steel of appropriate dimensions.

Assembling

For such a boiler, grounding is required, but a zero cable must be fed to the outer pipe. It is important to remember that the phase must be applied to the electrodes. Pre-prepared pipe, the length of which is 25 cm, and the diameter is in the range of 8 to 10 cm, it is necessary to use the first.

Electrodes are located on one side, on the other hand a coupling is installed to connect to the main. To install the electrodes, it is necessary to use a tee, which will allow the input and output of the coolant. Near the electrode it is necessary to arrange an insulator, which will perform one more function - to seal the boiler.

For insulator it is necessary to use heat-resistant plastic. For the device, not only the tightness is important, but also the possibility of threaded connection of the tee and the electrode. The body should be welded with a large bolt, to which the zero cable and ground terminals are fixed.

If you want to improve reliability, you can fix a second bolt, using the same technology as in the case with the first. Once the connection to the heating system using a coupling is made, it is necessary to hide the equipment with a decorative coating. It is used not only for aesthetics, but also for ensuring safety, namely protecting a person from electric shock. Do not neglect this step, it is important to limit access to the generator.

Mounting

When the self-made electric boiler is made by hand , it is possible to start the installation work, for this purpose, it is necessary to install air vents, a fuse and a manometer. The shut-off valve must be installed after the expansion tank. The boiler should be placed vertically, which is due to the peculiarities of its operation. Fasteners must be installed so that they are separated from each other.

Before installing the unit, the heating system must be cleaned. For this, pure water is used, which is diluted with a special agent. If a contaminated coolant is used or when the line is poorly flushed, there is a chance that the ion boiler will lose its productivity.

When installing a home-made electric boiler at home, you can ground using a copper cable with a diameter of 4 mm or more. Its resistance should be 4 ohms or less. The cable should be connected to the zero terminal, which is located at the bottom of the device. Radiators are important to choose, given the volume of the system. The most suitable option would be 1 kW of power per 8 liters of total volume. If this indicator is exceeded, a self-made electric boiler for heating the house will work longer than required. This will cause an increase in electricity costs.

Conclusion

By arranging the heating system, it is recommended to choose bimetallic alloys or radiators from aluminum. The use of other materials is unacceptable, since they contain a lot of impurities that can adversely affect the electrical conductivity of the working fluid. When installing an open system, the radiators used must have a polymer coating on the inner walls, which will prevent the access of oxygen and prevent corrosion.

The closed system has no such drawbacks. A homemade electric boiler, made of a pipe, can not work together with cast iron radiators, because they contain impurities that can reduce the productivity of such equipment. Among other things, such devices have a large volume, which leads to an increase in electricity consumption.