Dual-heating system in a private home

Hardly a cottage comfortable if the temperature it does not correspond to domestic norms and standards. To protect against the harshest frosts equipped efficient heating system. Experience shows that the more favorable is the two-circuit heating private houses, in contrast to the traditional scheme one circuit, it works not only for heating, but also to supply tenants with hot water, then there is everything utility Problems.

mounting Features

Combi boilers, presented on the market today - it's really tech devices, equipped with numerous sensors, machinery and electronics, which controls the operating parameters, which guarantees the security constantly maintains performance at previously defined elevations. If we talk about the balance between efficiency and power, the best option is as a gas boiler. When installing the equipment it is recommended to follow the following instructions:

  • The boiler is placed in a separate room, which is the minimum allowed area - 4 square. It is mandatory to be equipped with doors and windows that lead to a desired level of ventilation.
  • For finishing work apply only permitted materials that do not support combustion.
  • Admission of air necessary for proper burner operation occurs through airhole constantly remains open.
  • The combustion gases occurs through the chimney. Only one of the ventilation system is not enough, there is a risk that hazardous substances will be in the living room.
  • Directly under the pot is placed a metal sheet or other non-combustible material area, at least square meter.
  • The minimum pressure threshold when the system pressure tested - 1.8 bar.

We recommend that you read Optimal heating embodiments house and cottage.

Definition of the main working parameters

Dual-heating system in a private home is the basis of the boiler capacity and the volume of which must be calculated as accurately as possible. The technique should be more productive than in the case of single-circuit counterparts, due to increased consumption of coolant.

If the power is chosen correctly, the maximum temperature did not rise above 90 degrees in the combustion chamber, and this greatly extend service life, eliminate sudden changes and, as a result, cracking metal. Reserve power for cottage area of ​​100 squares is 38 kW.


On combi boilers indicated two values ​​(example - 12/24 kW). The first number in this case demonstrates the possibility of heating units, the second - the work on rapid heating of water for household needs. If we talk about capacity, it is possible to proceed from the following:
  • 10 liters - only washing dishes;
  • 30 liters - comfortable taking a shower;
  • 50 liters - large-scale laundry;
  • 100 liters - taking a hot bath.

Additionally, for dual-fuel schemes need to install counters.

Working with gas equipment: permits

Two-circuit gas heating system in a private home is equipped only after registration of the resolution documentation. The process for obtaining securities as follows:

  • Contacting BTI after adjusting the technical passport of the building. The plan reflects a room equipped for the needs of the boiler house, made relevant notes;
  • Applying for gas service with the application of technical certificates in advance of the purchased equipment;
  • Installation without a bypass connecting the boiler;
  • Connecting boiler (this work strongly recommended trusted master);
  • Obtaining final permission for commissioning. It is issued by an inspector checks quality of installation, the correctness of the electronics, the circuit leaks.

Features installation

Heating private homes with their own hands in the following order:

  • Installation of the boiler and piping. Gas piping are best left to a professional, hydraulic and electrical piping are made in-house. Contact is established by the piping medium nozzle, the elements are laterally from it for Cold and hot water (the left branch pipe sends the water to the stack, the right is required for supplying the cooled coolant). On the return pipe is required to put coarse filter to prevent mechanical fractions inside the boiler, which is able to disable it. It is also recommended to put the shut-off valve, so that when an emergency occurs immediately stop the circulation of water.
  • Installation of the expansion tank. The heating element is required in order to compensate for the phenomenon of increasing the volume of water provoked by the temperature rise. In other words, the lack of capacity can lead to an explosion. The volume of the tank should be at about 10 percent of the total volume of the coolant circulating in the system. For the installation of the unit fit any convenient place.
  • Adjustment of heating radiators. The optimum place - under the windows, so the effective air exchange is achieved. If we talk about what kind of modification you should choose, we recommend combined unit made of aluminum and steel. They combine and mechanical strength, and simplicity to the quality of the coolant, and excellent heat impact.

wiring batteries

two-storey house heating system can be based on one of the following radiator connection methods:

  • Side connection on one side - the most common method. Trumpet, feed water is supplied from the top, the removal is carried out from the lower side. This scheme corresponds to the greatest heat transfer.
  • If the room features a unique interior, it is recommended to pay attention to the lower method connection, which looks more aesthetically pleasing, pipes hidden behind baseboards and completely noticeable.
  • Connecting diagonally - a good option for batteries with multiple sections. Feeding hot coolant going into the upper nozzle on the one hand, the output - to the lower opposite side of the nozzle.

Connection is performed in parallel or sequentially. The serial connection is bad that the failure of one of the battery leads to the failure of the entire system. In such a scenario parallel manner excluded.

helpful hints

Effective scheme involves a careful selection of the material pipe and the number of battery sections. According to the generally accepted norm, one section is designed for heating 2 square meters of space. Of course, this rule does not always apply, it should be taken into account and the power of the radiator, and the height of the ceiling, and the quality of the insulation.

When choosing a pipe it is recommended to focus on polypropylene and metal models. Polypropylene is cheaper but more difficult to install - you need a special welding machine, it costs quite expensive, and therefore, instead of buying your best to take rent equipment. Metal pipes more expensive, but they are easier to install, uses standard fittings and fasteners.

Thus, the system is quite realistic, and in-house. The main thing - to strictly follow the technology and not to make mistakes!