Pellets for heating in a private house, heating consumption per 1m 2, automatic unit

The operation of a pellet boiler is based on pellets - a special type of solid fuel, which is obtained as a result of processing peat, agricultural waste and sawdust. Many people liked such a boiler due to the use of raw materials on a budget. It can be used to heat rooms without running water. There is a pellet burner inside the pellet boiler. The fuel must be independently moved from the loading area to the working area. In this article we will talk about the best boiler models and find out in more detail their principle of work with the rules of correct installation.

Principle of operation

The main principle of operation of a pellet boiler is the implementation of a metered supply of fuel to the combustion chamber. How much the user loads the pellets, so much heat he will receive. They are fed into the combustion chamber in certain portions, which makes the boiler different from other competitors. Then they go to the burner mechanism. It can be flare, retort and flow. For example, in forced-feed boilers, the fuel is supplied by a screw. The serving size directly depends on the required temperature. A fan located at the burner supplies air, the amount of which is calculated by the controller. The heat from the combustion of the pellets is removed by a heat exchanger.

Pellet quality for heating

Slag after using bad pellets

However, in addition to the correctly selected equipment, the operation of pellet boilers for heating a house directly depends on the quality of the fuel. The popularity of this method of heating the room has led to the appearance of low-quality granules, made by handicraft without observing technology. This was reflected in the actual indicator of the calorific value - it is significantly below the norm. There is a misconception that the consumption of pellets for heating in a private house depends on their color. In fact, the darker the pellets, the more bark was used to make them. Light yellow pellets are made from furniture industry waste, and dark brown pellets are made from logging. Also, all types of granules will sink in water, since their density index exceeds 1.

Ash content is one of the main selection criteria. According to the existing European standards, this figure should not exceed 1.5%. In case of inconsistency, a large amount of slag will form during combustion, which will negatively affect the operation of the boiler.

In addition, high-quality pellets should have the following characteristics:

Humidity - less than 10%... Otherwise, there will be an increase in the consumption of pellets for heating due to the loss of heat capacity;
Dust content - no more than 11%... This directly affects the ash content of the pellets;
Packaging... The best option when the granules are stored in special bags, treated inside with a waterproofing film. In this case, the storage period can be calculated in years.

The cost of one kilogram of granules is from 6 to 10 rubles. depending on the packaging. If you have a large bunker, it is recommended to purchase pellets in so-called big bags - large bags. The full container weight will be about 900 kg.

You can find reviews on pellet heating on specialized forums. Comments on the websites of sellers or manufacturers are not always objective due to internal moderation.

TOP 7 best pellet heating boilers

We analyzed a large number of models, as a result of which the following boilers became the basis of the rating:

Heiztechnik Q BIO DUO 35;
Kiturami KRP 20A;
ACV ECO Comfort 25;
ZOTA Pellet 15S;
Pelletron 40 KT;
Ferroli SFL 3;
Stropuva S20P.

We propose to dwell in more detail on the description of all the above models. This will help you find out their main advantages and disadvantages, which will play a leading role during the purchase.

Heiztechnik Q BIO DUO 35

The first in our rating is the Italian-made boiler. The design has a double-type firebox, due to which the amount of warm air that affects the heat exchanger increases several times. In addition to pellets and a burner, there is also a steel grate, the main function of which is to store firewood.

Dimensions (edit)	159x70x71 cm
Construction weight	556 kg
Power indicator	35 kWt
Tank capacity	300 l

Price: from 150,000 to 200,000 rubles.

pros

microprocessor-type control;
there are two ways to supply fuel: manual and automatic;
the bunker holds a large amount of fuel (300 l);
The efficiency from burnt wood is 88%;
high power (35 kW);
the profile shape of the wheels is easy to clean;
the maximum heating area varies from 120 to 350 m².

Minuses

large weight and dimensions (556 kg, 159x70x71 cm).

In connection with the move to the private sector, we decided to buy a heating boiler. Given the poor communication in the village and the frequent power outages, especially in winter, it was decided to take a closer look at the pellet boiler. It is quite large and cumbersome, so it is perfect for a stationary installation. Has a high heating capacity. We don't fill the tank completely, but it's still hot in the house. It works quite economically and does not require large expenses. It is also unpretentious in care and requires compliance with minimum sanitary standards. It copes well with the task and is fully consistent with its value.

pellet heating boiler Heiztechnik Q BIO DUO 35

Kiturami KRP 20A

The next boiler is being sold to shops on behalf of a South Korean manufacturer. Due to its high power rating, it copes well with heating large premises (300 m²). Heats water to temperatures ranging from 50 to 85 degrees. There is protection against overheating, which consists in the operation of the thermal valve and the supply of cold water to the system.

Pellet heating boilers Kostrzewa (Poland) - pros and cons

The advantages of Kostrzewa pellet boilers are difficult to count on one hand, they will not be enough. This is a well-thought-out design, correct engineering calculation and good execution. Quality materials from which boilers are made, ceramics, boiler steel and actuators are all at their best.

And even the prices hardly bite. For example, prices for Mini Bio pellet boilers start at 120,000 rubles for a 10 kW boiler. That, you see, there is very little for a quality product. And if you consider that Kostrzewa boilers can be bought in April, May at a discount from dealers, with a 3-year warranty, then these heat generators are becoming a rather interesting option, especially for a small house.

The disadvantages include the complexity of setting up boilers and not always understandable gluttony for pellets. And also the fact that the service for these heat generators is not possible to carry out on the entire territory of Russia and Kazakhstan. In Ukraine it is simpler, there dealers cover the entire territory of the country, in almost every large settlement you can find a dealer of the plant.

Installation rules

Before installation, it is necessary to calculate the heat loss and select the required performance, taking into account the area of the room. Install the equipment in a garage or basement. Safety flooring should be made of non-combustible durable material. The installation site must be equipped with a concrete elevation of 10-15 cm. The temperature in the boiler room should be +10 degrees with moderate humidity. Ventilation should be done in accordance with the indicated power in the equipment passport. Installation is carried out in accordance with the design documentation and safety requirements. Installation should be done by qualified personnel.

Selection Tips

A few tips from experienced buyers and connoisseurs will help you make the right purchase and not regret it after a while:

If you want to save money on your purchase, then choose a non-volatile boiler with a simple circuit.
If you want to save on fuel, then you should buy an expensive boiler with sophisticated automation.
It is best to choose a large hopper to avoid adding fuel frequently.
Choose a high efficiency model.
The most convenient to use are models with autonomous operation and fuel supply. They calculate the pellet portions themselves in accordance with the set temperature.

Pellet boiler selection

Pellet boiler design

Without a properly selected boiler, it is impossible to heat a house with pellets. Reviews of various models are not always unambiguous. Someone does not like the relatively low efficiency, some complain about the constant clogging of the combustion chamber. Therefore, when choosing equipment, it is recommended to pay attention not only to its power, but also design features.

The ratio of the generated heat energy to the area of the house for pellet equipment is standard - 1 kW per 10 m² of living space. Then you need to pay attention to the following functional and design features of the boiler:

Combustion chamber volume... The maximum load of the furnace and the time of burning out of all fuel depends on this;
Self-cleaning function... Pellet heating boilers have a flue gas spiral. Over time, a layer of soot can form on it, which will significantly reduce the power of the equipment;
Automatic control... It is best to choose models with the ability to adjust the load depending on external factors - room temperature, outside, etc. In this case, the consumption of pellets for heating will be optimized.

For consumers, the main indicator is still the cost of the boiler. Among the many models, there are several that are used for heating with pellets. Reviews about their work speak of reliability and a good indicator of efficiency. One of the most affordable is the products of the Russian company Teplodar. Their model Kupper OK 20 currently costs about 84 thousand rubles. The kit includes a hopper, a feeder, a burner and the boiler itself.

In the industrial segment of powerful heating equipment, Viesmann is the leader. Their automated set, designed for a maximum power of 90 kW, costs about 310 thousand rubles.

In addition to power, you need to pay attention to the boiler efficiency. Efficient heating of a house with pellets is possible with a minimum rate of 80% or more.