How to choose and use for the house combined heating boilers

Building a house is expensive, so every ruble must be spent profitably. This publication will focus on the source of heat energy for the heating system - the boiler. It is more expedient to immediately purchase a combined version, which in particular will allow the use of several types of fuel, for example, wood and electricity.

In this case, you have a better chance in the event of an emergency on the power line during the winter period not to cool down the house.

Below we will tell you when the installation of such equipment is most appropriate, you will learn how these devices work, and professional advice on their choice will be given. On the market and in retail chains today you can find enough models that can work on different types of fuel, but we will stop at one where they use firewood and electricity for space heating.

The feasibility of installing a combined boiler

This issue is one of the main, as additional equipment increases the cost of the product.

Usually the decision is made in such cases:

• it is planned to use more than one type of fuel in one season;
• there are restrictions on the amount of electricity consumed, after which payment is made at tariffs that make the use of electricity unjustified;
• when possible frequent outages in the village.

Consider that the floor heating boiler of the combined type can be used as fuel together with electricity, depending on the equipment, firewood, pellets, briquettes, coal, wood waste. Connect it to the heating system is not difficult with their own hands.

How the combined equipment works

In the design of the boiler we are discussing, working on wood and electricity, there are several fireboxes (2-4, depending on the model) where the fuel is burned and also the electric heaters work. Heat exchangers are connected to each firebox, which allows to quickly restore the heating after changing the type of fuel.

Equipment capable of operating on both electricity and solid fuel is lighter, due to the fact that the coolant is heated by electricity like a boiler. Let us consider in more detail the advantages of this boiler:

Tip: during the operation of a combined dual-fuel boiler, for example, wood-electricity, we recommend first heating the room with solid fuel, and after reaching the desired temperature, switch to heating elements. The latter will maintain the specified parameter automatically with minimal power consumption.

How to choose equipment

Today, combined boilers of different models are offered on the market, sometimes the buyer is simply lost in such a wide range. Our task is to help you choose exactly what you need without spending extra money.

Consider that there are models for domestic and industrial needs that differ in packaging, performance and power.

We recommend to pay attention to:

1. The number of circuits that can serve the boiler. For example, there are models in which hot water supply is possible only when the electrofan is on, and there is no coil in the combustion chamber. If you turn off the electricity in the country, this option is not the most convenient.
2. The total weight and overall dimensions of the equipment is an important parameter, since several cast-iron fireboxes in the structure can increase the weight very much. Therefore, it will be necessary in advance to prepare a powerful foundation for such a boiler.
3. The power of the boiler depends on the raw materials used.. You should first determine what kind of fuel will most often have to be heated, and then choose a model where this figure will be higher than the actual consumption of heat energy.
4. Grate material - choose cast-iron or steel with ceramic coating. In this case, their service life will exceed 30 years.

Advice: if you are in doubt about the right choice, consult with the seller or a specialist.

Professional recommendations

Combined heating equipment capable of operating on solid fuels and electricity needs to be connected to the electrical grid. If a separate 380V line is not connected to the house, you will need to obtain all the required permissions before you can start operating the boiler. (See also the article Electric heating boilers for the garden: features.)

Tip: do not forget to connect the electrical part of the equipment to the circuit breakers and grounding to ensure the safety of its use.

Note, do not ground the circuit to "0". For this, a separate contour must be made, which must then be dug into the ground.

To reduce electricity consumption, it is necessary to carry out insulation work around the perimeter of the building, as well as use it as an additional source of heat.

What does our market offer?

1. AOTVK 2-15-3 - boiler for heating buildings up to 120 m2, uses wood (briquettes) and electricity as fuel. The body is made of steel grade ST 3 (3 mm thickness), painted with powder paint. The device has an electric unit with a capacity of 3 kW, consisting of three heating elements of 1 kW. Using the control panel, you can adjust the power from 1 to 3 kW. PU-1 makes it possible to control the temperature of the coolant within +30? С-80? С. (See also the article Heating a private house with firewood: features.)

The mass of the product does not exceed 63 kg, which makes it possible to mount it without the use of special equipment. The diameter of the water circuit is 11/2, it is allowed to use antifreeze instead of water.

The combustion chamber is designed for log lengths up to 370 mm. For the chimney, it is recommended to use an adapter for a round pipe O115 mm. A stove with one or two burners is installed on top.

1. The boiler AOTB-18 "Smoke" - a simple, economical and reliable design made the product "popular". Consider its benefits:

• economical, designed for low-cost water heating systems, can use wood, angle and electricity;
• the electric heater is a reserve source of heat, which makes it possible to maintain heat in the building after burning solid fuel or when there are no people in the room;
• the hob allows you to heat the sludge to cook food;
• there is a remote control, thereby maintaining the thermal regime of the coolant and air in the room. Included for this are the corresponding sensors;
• robust steel body made of solid sheet metal, so it has a minimum number of seams.

Conclusion

The more fuels you can use in a heating boiler, the less you will depend on some one. It is better to use electricity as a supporting source of heat, since its cost is higher compared to firewood. The equipment does not require special care and maintenance, the main thing is to properly connect the electrical part. The video in the article will help you find additional information on this topic.