It is possible to decide which heating system is better, one-pipe or two-pipe, after analyzing the design features, pros and cons of each option. In any case, a verdict must be made at the construction design stage. is a rather complex structure. Redo it after finishing finishing works difficult and sometimes impossible. Consider the difference between two different approaches to the arrangement of heating buildings using boilers, batteries and piping.

This option is used in cases where it is necessary to carry out communications quickly and at minimal cost.

It is used in residential, private and industrial construction. A feature of this solution is the absence of a water return line. The batteries are connected in series, the assembly is carried out in a short time and does not require complex preliminary calculations.

How does a one-pipe line work

In such structures, the coolant is supplied to the upper point and flows down, successively passing through heating elements... When arranging a multi-storey building, it is practiced to install an intermediate pump that creates required pressure in the feed pipe for punching hot water along a closed loop.

Given a low house height and a limited number of heat consumers, water circulation is sufficiently efficient.

Vertical and horizontal schemes

The construction of a one-pipe line is carried out in a vertical and horizontal orientation. Vertical distribution is installed in buildings with two or more floors. The coolant is supplied to the radiators, starting from the topmost one. The horizontal heating main is most often used for the arrangement of single-level buildings - houses, summer cottages, warehouses, offices and other commercial facilities.

The layout of the pipeline assumes a horizontal arrangement of the riser with its sequential supply to the batteries.

Advantages and disadvantages

The single-pipe design of the heating main has the following advantages:

• Installation is carried out quickly, which is important given the modern requirements of the pace of construction. Besides, appearance a one-pipe collector with a height of several meters is superior to a complex system of two lines.
• Small budget. The cost estimate shows that the construction requires a minimum number of pipes, fittings and fittings.
• If consumers are installed on a bypass, then it becomes possible to regulate the heat balance separately in each room.
• The use of modern locking devices makes it possible to modernize and improve the line. This allows replacing radiators, inserting devices, and other improvements without a long shutdown of the system and draining water from it.

This design also has its drawbacks:

• The sequential arrangement of the batteries does not exclude the possibility of adjusting the heating temperature in them separately. This entails cooling all other radiators.
• Limited number of batteries on one line. It is impractical to put more than 10 of them, since at the lower levels the temperature will be below the permissible level.
• The need to install a pump. This event requires additional cash investments. The power plant can cause water hammer and damage to the lines.
• In a private house, you will need to install an expansion tank with a valve to bleed air. And this requires a place and carrying out insulation measures.

Two-pipe heating system

This design has a more complex structure, but also differs in efficiency and functionality.

The invested funds are compensated by the comfort for people, ease of maintenance and modernization.

Principle of operation and scheme of work

They are two risers and radiators located between them, warm floor and other heat consumers. The supply is carried out along one line, along the return line, the cooled liquid returns to the boiler. That is why such structures are called two-pipe.

Classification: lower and upper wiring

There are two types of systems according to the location of the highways. The choice is made based on the features of the structure and the possibility of allocating areas for additional equipment. Two-pipe communications are classified into vertical for high-rise buildings and horizontal for one-story buildings.

According to the location of the piping, the systems are divided into upper and lower, regardless of where the radiators are installed.

In the case of the upper version, the entire interchange is settled in the attic or on the technical floor of the building. At the same time, the expansion tank is being installed, which is carefully insulated. After the boiler, a pump is mounted that supplies the coolant to the upper level.

In the case of the bottom wiring hot riser located above the return. The heating boiler is installed in the basement or on the ground floor with a recess below the floor. An upper air line is connected to the pipeline to bleed air from the radiators.

Advantages and disadvantages

The main advantages of the two-pipe design are as follows:

• Simultaneous transfer of the coolant to consumers allows you to adjust the temperature individually in each room. If necessary, the radiators are closed completely if the room is not used for a long time.
• The ability to remove individual devices for repair or replacement without shutting off the heat supply to the remaining batteries. For this are used Ball Valves, with the help of which the flow of water at the inlet and outlet of the radiator is blocked.
• No installation required centrifugal pump... Water rises up from the boiler due to the temperature difference at the inlet and outlet.
• The choice of a passing or dead-end design option. This makes it possible to balance the heat distribution without making constant adjustments and adjustments.

The design flaws are as follows:

• The use of more pipes and components in the construction. This leads to the complication of construction, increased costs of finance and time.
• Increase in cost if the line is made of steel or aluminum. Use of reinforced polypropylene pipes significantly reduces the construction budget.
• Not everyone likes the abundance of communications in the interior. They can be hidden in walls or boxes. And these are additional costs and difficulties with maintenance.

What's better?

What to choose: one- or two-pipe construction, it is up to the master to decide individually. Each of them has its own positive negative properties associated with the design, construction, maintenance and improvements.

For small house up to three storeys high, the single riser option may be the ideal solution when minimum investment achieved high-quality result... But, it should be remembered that in such cases, the process of installing additional equipment and replacing radiators that have served their purpose becomes much more difficult.

How to remake a one-pipe in two?

Two-pipe system much more effective in many respects. makes the process of its construction simple and inexpensive. The alteration will not be difficult, but it will require sacrificing the repairs carried out, since you will have to install and gradually build up the return riser and connect the batteries to it.

Another option is to install bypasses for consumers closest to the boiler in order to reduce their temperature and increase the flow of coolants to the final radiators.

If you have any experience in this field please share it. You will render a valuable service to craftsmen who have not yet made a choice in favor of one or another option for heating their homes.

There are several ways to heat a room with hot water. There is a two-pipe one-pipe scheme placement and two types of pipe supply: lower and upper. Consider a design with two pipes and wiring at the bottom.

Characteristic

The most common is precisely the two-pipe heating organization, despite some of the advantages of one-pipe structures. No matter how complex such a line with two pipes (separately for the supply of water and its return) is, the majority prefers it.

Such systems are installed in multi-storey and apartment buildings.

Device

The elements of two-line heating with a bottom pipe cut are as follows:

• boiler and pump;
• car air, thermostatic and safety valves, valves;
• batteries and expansion tank;
• filters, regulating devices, temperature and pressure sensors;
• bypasses can be used, but not required.

Advantages and disadvantages

The considered two-pipe scheme connection reveals many advantages when used. Firstly, the uniformity of heat distribution throughout the line and the individual supply of the coolant to the radiators.

Therefore, it is possible to regulate the heating devices separately: turn on / off (you only need to close the riser), change the pressure.

V different rooms different temperatures can be set.

Secondly, such systems do not require shutting down or draining the entire coolant in the event of a breakdown of one heating device. Thirdly, the system can be installed after the construction of the lower floor and not wait until the whole house is ready. In addition, the piping has a smaller diameter than a single pipe system.

There are also some disadvantages:

• more materials are required than for a single-pipe line;
• the low pressure in the supply riser makes it necessary to frequently bleed air by connecting additional valves.

Comparison with other types

In the lower inset, the supply line is laid from the bottom, next to the return, because the coolant is directed from the bottom up along the supply risers. Both types of wiring can be designed with one or more circuits, dead-end and associated water flow in the supply pipe and return.

Systems natural circulation with an eyeliner at the bottom, they are very rarely used, since they require a large number of risers, and the meaning of such a tie-in of pipes is to reduce their number to a minimum. With this in mind, such designs most often have forced circulation.

Roof and floors - meaning

In the upper connection, the supply line is above the radiator level. It is installed in the attic, in the ceiling. The heated water enters the top, then - through the supply risers it evenly spreads over the batteries. Radiators should be located above the return line. To exclude air accumulation, a compensating tank is mounted at the very top point (in the attic). Therefore, it is not suitable for houses with flat roof without an attic.

The bottom wiring has two pipes - supply and outlet, - the radiators must be higher than them. It is very convenient to remove air congestion cranes Mayevsky. The supply line is located in the basement, in the plinth, under the floor. The supply line must be higher than the return. The additional slope of the line towards the boiler minimizes air pockets.

Both wiring is most effective in a vertical configuration where the batteries are mounted on different floors or levels.

Principle of operation

The main characteristic of a two-pipe system is the presence of an individual water supply line to each radiator. In this scheme, each of the batteries is equipped with two separate pipes: water supply and outlet. The coolant flows to the batteries from the bottom up. The cooled water returns through the return risers to the return line, and through it to the boiler.

In a multi-storey building, it is appropriate to install exactly a two-pipe structure with a vertical line and lower wiring. In this case, the temperature difference between the heating medium in the supply pipe and the return pipe creates a strong pressure that increases as the floor rises. The pressure helps the water move through the pipeline.

In the considered lower pipe connection, the boiler must be in a recess, since the batteries and heating devices must be higher to ensure uniform delivery of water to them.

The air that accumulates is removed by Mayevsky taps or drains, they are mounted on all heating devices. Automatic dumpers are also used, which are fixed on risers or special air vent lines.

Views

A two-pipe heating system can be of the following types:

• horizontal and vertical;
• straight-through - the coolant flows in one direction through both pipes;
• dead end - hot and cooled water moves in different directions;
• with forced or natural circulation: for the first, a pump is needed, for the second, a slope of pipes towards the boiler.

The horizontal scheme can be with dead ends, with passing water movement, with a collector. It is suitable for single-storey buildings with a significant length, when it is advisable to connect the batteries to a horizontally located main pipe. Such a system is also convenient for buildings without walls, in panel-frame houses, where it is convenient to place risers on staircase or corridor.

According to experts, the most effective was the vertical circuit with forced water flow. It needs a pump, which is located on the return line in front of the boiler. An expansion tank is also mounted on it. Due to the pump, the pipes can be smaller than in a design with natural movement: with its help, water will be guaranteed to move along the entire line.

All heaters are connected to a vertical riser. it the best option for high-rise buildings. Each floor is connected to the riser pipe separately. The advantage is the absence of air pockets.

Mounting

Conventionally, several stages of work can be distinguished. First, the type of heating is determined. If gas is supplied to the house, then the most ideal option there will be installation of two boilers: one - gas, the second - spare, solid fuel or electricity.

Stages

Briefly, the installation consists of the following points:

• the supply pipe is brought up from the boiler and connected to the expansion tank;
• a pipe of the upper line is taken out of the tank, which goes to all radiators;
• a bypass (if provided) and a pump are installed;
• a return line is drawn parallel to the supply line, it is also connected to the radiators and cut into the boiler.

For a two-pipe system, the boiler is installed first, for which a mini-boiler room is created. In most cases, this is a basement (ideally a separate room). The main requirement is good ventilation... The boiler must have free access and be located at some distance from the walls.

The floor and walls around it are lined with refractory material, and the chimney is led out into the street. If necessary, install a pump for circulation, a manifold for distribution, regulating, measuring instruments near the boiler.

They are installed last. They are located under the windows and are fixed with brackets. The recommended height from the floor is 10–12 cm, from the walls - 2–5 cm, from the windowsills - 10 cm. The battery inlet and outlet are fixed by locking and regulating devices.

It is advisable to install temperature sensors - they can be used to monitor temperature indicators and regulate them.

If the heating boiler is gas, then it is necessary to have the appropriate documentation and the presence of a representative. gas facilities on first launch.

The expansion vessel is located at or above the highest peak point of the line. If there is an autonomous water supply, then it can be integrated with a supply tank. The slope of the supply and return pipes should be no more than 10 cm by 20 or more linear meters.

If the pipeline ends up at front door- it is appropriate to divide it into two knees. The routing is then created from the top point of the system. The lower line of the two-pipe design must be symmetrical and parallel to the upper one.

All technological units must be equipped with taps, and it is desirable to insulate the supply pipe. It is also advisable to place the distribution tank in an insulated room. In this case, there should be no right angles, sharp fractures, which will subsequently create resistance and air locks. Finally, we must not forget about the pipe supports - they must be made of steel and cut in every 1.2 meters.

Several heating systems are known today. They are conventionally divided into two types: one-pipe and two-pipe. To determine better system heating, you need to be well versed in the principle of their work. With this, it will be easy to make the choice of the most suitable heating system, taking into account all the positive and negative qualities. except technical characteristics when choosing, you must also take into account your financial capabilities. Still, is a one-pipe or two-pipe heating system better and more efficient?

All the details that are installed in each system are present here. The most important are:

Positive and negative properties of a one-pipe system

It consists of one horizontal collector and several heating batteries connected to the collector with two connections. Part of the coolant moving along the main pipe enters the radiator. Here, heat is released, the room is heated and the fluid is returned back to the collector. V next battery liquid enters, the temperature of which is slightly lower. This continues until the last radiator is filled with coolant.

The main hallmark a one-pipe system is the absence of two pipelines: return and supply. This is the main advantage.

No need to lay two lines. You will need a lot fewer pipes, and installation will be easier. No need to punch through walls and make additional fixings. It would seem that the cost of such a scheme is much lower. Unfortunately, this is not always the case.

Modern fittings allow automatic adjustment of the heat transfer of each individual battery. To do this, it is necessary to install special thermostats with a large flow area.

However, they will not help get rid of the main disadvantage associated with the cooling of the coolant after it enters the next battery. Because of this, the heat transfer of the radiator, included in the common circuit, decreases. To keep warm, it is necessary to increase the capacity of the battery by building up additional sections. Such work increases the cost of the heating system.

If you make the connection of the device and the line from pipes of the same diameter, the flow will split into two parts. But this is unacceptable, since the coolant will begin to cool quickly when it enters the first radiator. In order for the battery to fill at least a third of the coolant flow, it is necessary to increase the overall collector size by about 2 times.

And if the collector is installed in a large two-story house, the area of ​​which exceeds 100 m2? For the normal passage of the coolant, pipes with a diameter of 32 mm must be laid along the entire circle. To mount such a system, large financial investments are required.

To circulate water in a private one-story house, it is necessary to equip the one-pipe heating system with an accelerating vertical collector, the height of which must exceed 2 meters. It is installed after the boiler. There is only one exception, this is pumping system equipped with a wall-mounted boiler, which is suspended at the desired height. The pump and everything additional elements also lead to an increase in the cost of one-pipe heating.

Individual construction and one-pipe heating

The installation of such a heating, which has a single main riser in a one-story building, eliminates the serious disadvantage of this scheme, uneven heating. If something like this is done in multi-storey building, the heating of the upper floors will be noticeably stronger than the heating of the lower floors. As a result, an unpleasant situation will arise: it is very hot upstairs, and cold downstairs. Private cottage usually has 2 floors, so the installation of such a heating scheme will evenly heat the whole house. It won't be cold anywhere.

Two-pipe heating system

The operation of such a system is somewhat different from the above-described scheme. The coolant moves along the riser, entering each device through the branch pipes. Then, through the return pipe, it returns to the main pipeline, and from there it is transported to the heating boiler.

To ensure the operability of such a scheme, two pipes are supplied to the radiator: through one, the main supply of the coolant is carried out, and through the other, it is returned to the common line. That is why they began to call it two-pipe.

The pipes are installed along the entire perimeter of the heated building. Radiators are installed between pipes to absorb pressure surges and form hydraulic bridges. Such work creates additional complications, but they can be reduced by creating the correct scheme.

Two-pipe systems are divided into types:

Main advantages

What positive qualities possess such systems? Installation of such a heating system makes it possible to achieve uniform heating of each battery. The temperature in the building will be the same on all floors.

If you attach a special thermostat to the radiator, you can adjust the desired temperature in the building yourself. These devices have no effect on the heat dissipation of the battery.

Double-pipe piping makes it possible to maintain the pressure value during the movement of the coolant. It does not require the installation of an additional high power hydraulic pump. The circulation of water occurs due to gravitational force, in other words, by gravity. With poor pressure, you can use pumping unit low power that does not require special maintenance and is quite economical.

If you use shut-off equipment, various valves and boypasses, then it will be possible to mount such systems in which it becomes possible to repair only one radiator without turning off the heating of the whole house.

Another advantage of two-pipe piping is the possibility of using any direction of hot water.

The principle of operation of the passing scheme

In this case, the movement of water along the return and main pipes occurs along the same path. In a dead-end scheme - in different directions. When the water in the system has a passing direction, and the radiators have the same power, excellent hydraulic balancing is obtained. This eliminates the use of battery preset valves.

With different power radiators, it becomes necessary to calculate the heat loss of each individual radiator. To normalize work heating appliances, thermostatic valves will need to be installed. It is difficult to do it yourself without specific knowledge.

Hydraulic gravity is used when installing a long-distance pipeline. In short systems, a dead-end circuit for the circulation of the coolant is created.

How is the maintenance of the two-pipe system

For the service to be of high quality and professional, it is necessary to perform a whole range of operations:

• adjustment;
• balancing;
• customization.

To adjust and balance the system, special branch pipes are used. They are installed at the very top of the system and at its lowest point. Air is discharged after opening the upper pipe, and the lower outlet is used to drain the water.

Excess air accumulated in the batteries is vented using special taps.

To adjust the system pressure, set special container... Air is pumped into it with a conventional pump.

Using special regulators that help reduce the water pressure in a particular radiator, a two-pipe heating system is adjusted. After the redistribution of the pressure, the temperature in all radiators is equalized.

How can you make a two-pipe from a one-pipe

Since the main difference between these systems is the decoupling of streams, it is quite easy to perform this rework. It is necessary to lay another pipeline parallel to the existing pipeline. Its diameter should be one size smaller. Next to the last device, the end of the old collector is cut off and tightly closed. The remaining section is connected directly in front of the boiler to a new pipeline.

Formed passing scheme circulation of water. The outgoing heating medium must be routed through a new pipeline. For this purpose, the inlet pipes of all radiators must be reconnected. That is, disconnect from the old collector and connect to the new one, according to the diagram:

The rework process can present additional difficulties. For example, there will be no room for laying a second line, or it is very difficult to break through the floor.

That is why, before embarking on such a reconstruction, you need to think over all the details of future work. It may be possible to adjust the one-pipe system without making any alterations.

The organization of heating a private house is not an easy job that requires maximum attention to each stage. First of all, it is necessary to decide which heating system to use: one-pipe or two-pipe? Your task is to choose the most effective option strapping, so that in the future you do not reap the fruits of your mistakes in the form of eternally cold ones. And in order to understand which of the systems is better, let's figure it out technical nuances and the principles of operation of each, and also compare their pros and cons.

Distinctive features of a one-pipe system

One-pipe piping operates according to an extremely simple principle: water circulates through closed system from the heating device to heating radiators... In this case, the equipment is united by one circuit. All technical units are connected in series with a common riser. In a private house, a hydraulic pump can be used to supply the coolant - it creates the pressure in the system necessary to effectively push water through the riser. Depending on the installation option, the one-pipe system is divided into two types:

1. Vertical - involves connecting radiators to one vertical riser according to the "top-down" scheme. Based on the features of the installation, the system is suitable only for two-three-storey private houses. But at the same time, the heating temperature on the floors may differ slightly.
2. Horizontal - provides serial connection batteries using a horizontal riser. Best option for a one-story house.

Important! There should be no more than 10 radiators on the riser of a one-pipe system, otherwise too uncomfortable temperature contrasts in different zones heating.

Pros and cons of a one-pipe system

In the matter of the advantages and disadvantages of one-pipe piping, everything is not so simple, therefore, in order to rationally evaluate the system, we will understand in detail the specifics of its pros and cons.

Among the obvious advantages:

• Cost effective - the assembly of a one-pipe system does not require a large number working materials. Saving on pipes and various auxiliary elements makes it possible to reduce the financial costs of connecting the heating system.
• Ease of installation - you only need to install one line for the coolant.

Single pipe horizontal system heating

Cons of one-pipe piping:

• The impossibility of controlling individual batteries - in the basic version, the single-pipe piping does not allow separately regulating the supply of the coolant to a particular radiator and adjusting the temperature in different rooms.
• The interdependence of all elements - in order to repair or replace any device, it is necessary to completely turn off the heating system.

At the same time, the indicated disadvantages, if desired, can be easily leveled with the help of closing devices - bypasses. They are jumpers with taps and gates that block the flow of coolant to a separate battery: if you need to repair any device, just block the water supply to it and start performing without fear of leakage necessary work- water in normal mode will continue to circulate in common system heating, bypassing the covered area. In addition, thermostats can be connected to the bypasses in order to control the operating power of each specific battery and separately regulate the heating temperature of the premises.

Technical subtleties of the two-pipe system

The two-pipe system works according to a complicated scheme: first, the hot coolant is supplied to the radiators through the first branch of the pipeline, and then, already cooled down, the water flows back to the heater through the return branch. Thus, we have two fully functional pipes.

Like one-pipe piping, two-pipe piping can be made in two variations. So, depending on the characteristics of the connection heating equipment, there are the following types of heating systems:

1. Vertical - all devices are connected by a vertical riser. The advantage of the system is the absence of air congestion. The downside is the relatively high cost of connection.
2. Horizontal - all components of the heating system are connected to a horizontal riser. Due to its high functionality, the strapping is suitable for single-storey dwellings with a large heating area.

Advice. When arranging a horizontal two-pipe system, a special Mayevsky valve must be installed in each radiator - it will perform the function of bleeding air plugs.

In turn, the horizontal system is divided into two more subspecies:

1. Bottom routing: the hot and return branches are located in the basement or under the floor of the lower floor. Heating radiators should be located above the heater level - this improves the circulation of the coolant. An upper air line must be connected to the general circuit - it removes excess air from the network.
2. With top routing: hot and return branches are laid in the upper part of the house, for example, in a high-quality insulated attic. An expansion tank is also located here.

Pros and cons of a two-pipe system

Two-pipe piping boasts a rather large list of advantages:

• Independence of system components - pipes are routed in parallel collector circuit, which ensures their isolation from each other.
• Uniform heating - in all radiators, wherever they are located, the coolant is supplied with the same temperature.

Two-pipe heating system

• No need to use a strong hydraulic pump - the coolant circulates through the two-pipe system by gravity due to only gravitational force, therefore, you do not need to use a powerful pump equipment... And if there is a weak head of the water flow, you can connect the simplest pump.
• The possibility of "building up" batteries - if necessary, after assembling the equipment, you can extend the existing horizontal or vertical piping, which is unrealistic with a single-pipe heating system.

There are also disadvantages of a two-pipe system:

• Complicated wiring diagram for heating equipment.
• Labor intensity of installation.
• The high cost of organizing heating due to a large number pipes and accessories.

Now you know how one-pipe and two-pipe heating systems differ from each other, which means that it will be easier for you to decide in favor of one of them. Before making the final choice, carefully evaluate the technical and functional pros and cons of each of the straps - so you will understand exactly what system is needed to heat your particular private house.

Connecting heating radiators: video

Heating system: photo

When designing a heating system, the question arises “What kind of heating system are we going to make? One-pipe or two-pipe? " In this article we will figure out what these systems are and what is their difference. To make everything clear, let's start with the definitions.

Definitions of one-pipe and two-pipe systems.

• One-pipe - (abbreviated to OSS) is a system in which all heating devices (radiators, convectors, and so on, we will abbreviate them by software) are connected to the boiler in series using one pipe.
• Two-pipe - (abbreviated as DSO) is a system in which two pipes are supplied to each PO. According to one of them, the coolant is supplied from the boiler to the software (it is called the supply), and the other, the cooled coolant is diverted back to the boiler (it is called the "return").

For the sake of completeness, we will add two more definitions. According to these definitions, there is a division according to the principle of laying the supply line:

• With top wiring - the hot coolant is first supplied from the boiler to the uppermost point of the system, and from there the coolant is supplied to the software.
• With a bottom wiring - the hot coolant is first diverted horizontally from the boiler, and then rises up the risers to the PO.

One-pipe heating system.

As described above, in the CCA, all heating devices are connected in series. Passing through them, the coolant will cool down, so the closer the radiator is to the boiler, the hotter it will be. This fact must be taken into account when calculating the number of heating radiator sections. The "farther" the radiator is from the boiler, the lower the temperature of the coolant will be in it and the more large quantity sections will be needed for heating. Bottom wiring is only possible for houses with one floor and forced circulation in system. With two or more floors, the upper piping is already needed.

There are two types of CCA:

1. CCA, in which heating devices are installed on the "bypass" (bypass jumper).
2. Flowing CCA - all devices are connected in series without jumpers.

The second type is unpopular due to the difficulty of regulating the temperature in radiators, which is caused by the fact that it is impossible to use special fittings (thermostatic valves). Since when closing or decreasing the flow through one radiator, the flow through the entire riser decreases. The main advantage of CCA is the lower cost of components and easier installation. The most popular version of the one-pipe system is "Leningrad".

What is "Leningrad".

According to legend, this system got its name from the city where it was first applied. But, of course, this cannot be reliably confirmed, and I don't really want to. So, "Leningrad" is one-pipe system heating, in which the software is installed on "bypass". This allows you to regulate the temperature of individual radiators or convectors, or turn them off altogether, if necessary. All the advantages and disadvantages of a one-pipe system are inherent in the "Leningrad", therefore, for distant radiators, it is necessary to increase the number of sections. Possible different options piping:

• Horizontal - the pipe lies in a horizontal plane and radiators are already installed on it.
• Vertical - the pipe runs vertically through the floors and radiators are connected to it.

CCA type "Leningradka" is best used for small private houses, where the number of floors does not exceed two. For large cottages with extended heating systems, such a "Leningrad" is not suitable.

An example of the implementation of "Leningrad"

Two-pipe heating system.

The main advantage of the DSO is that the coolant comes to all softwares equally hot. This allows not to increase the number of sections on "distant" radiators. That is, the most efficient use heating devices. The presence of two separate pipes for supply and return makes the installation of such a system more expensive. For such systems, both the upper and bottom wiring pipes and horizontal or vertical piping.

In addition, DSO may differ in the direction of the coolant flow:

• Dead-end systems - water in the supply and return pipes flows in different directions.
• Flow systems - water in the supply and return pipes flows in one direction.

Drawing from the book "Heating and Water Supply country house»Smirnova L.N.
The two-pipe system can be used for houses of any size, but it is most suitable for large cottages. Its application will allow changing the flow rate of individual radiators without affecting all the others. That is, it will be possible to apply various room thermostats, which will create comfortable conditions for all tenants.

Summary of the article.

The choice of the type of heating system depends on several factors:

• Your budget
• Areas of your home.
• Features internal device at home. For example, the number of floors
• The number of heating devices.

Most often, for small country houses(no more than 2 floors) a one-pipe system is better suited, and for large cottages (with 2 or more floors and a long length of pipelines) a two-pipe heating system will be more efficient. It is better to discuss the specific features of the implementation of a particular system with a professional designer.