DIY wood-fired boiler

Despite the fact that a mass gasification program is being implemented in our country, wood-fired heating appliances have not lost their relevance. To this day, even in luxury country houses, you can find wood-fired boilers.

Features of the manufacture of long-burning wood boilers

Wood-fired boiler equipment is a fairly popular way of providing autonomous heating of buildings and structures of various types. Such devices are quite possible to do with your own hands, this will require knowledge in welding, tools and drawing.

How to make a wood-fired boiler for water heating yourself

The independent manufacture of a wood-burning boiler for heating will require the master to carry out some preparatory activities. In particular, you will need to draw a sketch of the future product. He can imagine the upcoming scope of work and make a list of the necessary materials and tools.

IMPORTANT!

FOR MANUFACTURING THE BOILER HOUSING, IT IS IMPOSSIBLE TO USE 3-5 MM MM STRUCTURAL STEEL. THE USE OF SHEETS WITH LESS THICKNESS MAY RESULT IN THE DESIGN DESIGN ARISING UNDER THE ACTION OF HIGH TEMPERATURE.

Before you start assembly, except for the sketch need to calculate the slope, under which pipes will be installed that supply coolant and hot water. In addition, the homeowner must determine the place where the boiler will be installed. It must meet fire safety requirements. In particular, heat-insulating gaskets must be installed between the boiler and the walls of the wooden building, and a sheet of metal must be laid on the floor before the firebox. It will be possible to install an expansion tank in the boiler room, a certain distance must be left between the boiler and tanks.

For removal of combustion waste it is necessary equip the chimney.

In addition to places for the installation of the boiler and expansion tank, the homeowner must identify a place to store fuel.

What will be needed for work

For the independent manufacture of a boiler for heating, the following materials will be required:

• steel sheet 3-5 mm thick;
• steel pipes;
• pre-purchased doors, grate, damper.

For the manufacture of complex boilers, it may be necessary to have certain shutoff valves - taps, valves, etc. To ensure control over the operating parameters of the boiler, installation of pressure and temperature sensors will be required. To ensure the movement of the coolant should be provided for the use of a circulation pump.

From the tool you will need:

• welding machine and electrodes;
• angle grinder, it will be required for cutting sheet metal, and stripping welds;
• ruler, tape measure, locksmith's corner.

The assembly of the furnace must be carried out in a prepared place. That is, nothing should interfere with the work.

A step-by-step guide for the manufacture of a wood-burning boiler with a water circuit

As an example, consider the manufacture of a boiler, which is shown in the figure.

Figure 1. Sketch.

The manufacture of a boiler of this type can be divided into two phases.

1. The manufacture of the furnace.
2. Making the case.

First of all, it is necessary to complete the blanks for the manufacture of the boiler. To do this, you can use an angle grinder with a cutting wheel mounted on it. But, a piece of metal cannot give the quality of the edges that can provide a piece of metal on mechanical scissors (guillotine). Therefore, it makes sense to agree in an organization where metal will be purchased on cutting the sheet to the required size.

When manufacturing a boiler from a sheet with a thickness of more than 4 mm, bevels will be required at the edges. Their sizes are defined in GOST, these data can be found in the reference book of a machine-building technologist. The presence of the chamfer will ensure the quality of the weld.

Welding makes sense with an electrode with diameters of 3-4 mm. The current strength is set on the control panel of the welding machine. It should be in the range of 180-200 A.

ON A NOTE!

WHEN PERFORMING THE WORKS, IT WILL BE REQUESTED TO INVITE A ASSISTANT, ITS TASK WILL INCLUDE HOLDING THE BILLETS WHEN WELDING.

The welding of sheets is carried out in two stages - first, they perform a “tack” and after checking it is possible to perform welding of sheets.

After welding, you must remove the slag and look at them for quality work. On the surface of the seam there should be no bubbles, obvious lack of penetration, cuts along the edges of the suture zone and other defects. The quality of the welds is defined in GOST 3242-79.

Drawings of options for the manufacture of a wood-fired boiler

Engineering has no limits and therefore there are many different models of wood-fired boilers. Below are the widespread boiler models that are used in the household.

Important tips for making a wood-fired water boiler

Not everyone can make a wood boiler, but if you get down to business, be careful, and listen to the following tips:

1. If you do not have sufficient welding skills, entrust this work to a professional.
2. Adhere to safety precautions when working with welding and metal.
3. Before starting work, check the correctness of the drawings - one small mistake can ruin the final result.

In general, be careful, and the result will pay off.