Two-pipe pipeline. Schemes of a two-pipe heating system

Today, several heating systems are known. Conventionally, they are divided into two types: single-pipe and double-pipe. To determine better system heating systems, you need to have a good understanding of how they work. With this you can easily make the choice of the most suitable heating system taking into account all the positive and negative qualities. Except technical characteristics When selecting, you must also take into account your financial capabilities. And yet, is a single-pipe or two-pipe heating system better and more efficient?

Here are all the parts that are installed in each system. The most important are:

Positive and negative properties of a single-pipe system

It consists of one horizontal collector and several heating batteries connected to the collector by two connections. Part of the coolant moving through the main pipe enters the radiator. Here, heat is transferred, the room is heated and the liquid is returned back to the collector. The next battery receives liquid whose temperature is slightly lower. This continues until the last radiator is filled with coolant.

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

There is no need to lay two highways. Much fewer pipes will be needed, and installation will be simpler. There is no need to break through walls or make additional fastenings. It would seem that the cost of such a scheme is much lower. Unfortunately, this does not always happen.

Modern fittings allow for automatic adjustment 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 drawback 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 overall chain decreases. To maintain heat, it is necessary to increase the battery power by increasing additional sections. This type of work increases the cost of the heating system.

If you make the connection of the device and the main line from pipes of the same diameter, the flow will be divided 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 be filled with at least a third of the coolant flow, it is necessary to increase the size of the common collector by approximately 2 times.

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

To create water circulation 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 and that is pumping system, equipped wall-mounted boiler, which is suspended at the desired height. Pump and everything additional elements also lead to higher prices for single-pipe heating.

Individual construction and single-pipe heating

Installing such heating, which has a single main riser in a one-story building, eliminates the serious drawback 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 above, and cold below. Private cottage usually has 2 floors, so installing such a heating scheme will allow you to evenly heat the entire house. It won't be cold anywhere.

Two-pipe heating system

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

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

The installation of pipes is carried out along the entire perimeter of the heated building. Radiators are installed between pipes to dampen pressure surges and form hydraulic bridges. Such work creates additional difficulties, but they can be reduced by creating the right diagram.

Two-pipe systems are divided into types:

Main advantages

What positive qualities have 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 independently regulate the desired temperature in the building. These devices do not have any effect on the heat transfer of the battery.

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

If you use shut-off equipment, various valves and bypasses, you will be able to install systems in which it becomes possible to repair only one radiator without turning off the heating of the entire house.

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

Operating principle of the passing circuit

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

With different power radiators, it becomes necessary to calculate the heat loss of each individual radiator. To normalize the operation of heating devices, you will need to install thermostatic valves. This is difficult to do on your own without specific knowledge.

Hydraulic gravity flow is used when installing a long pipeline. In short systems, a dead-end coolant circulation pattern is created.

How is a two-pipe system maintained?

In order for the service to be high-quality and professional, it is necessary to perform a whole range of operations:

• adjustment;
• balancing;
• setting.

To adjust and balance the system, special pipes are used. They are installed at the very top of the system and at its lowest point. The 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 released using special taps.

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

Using special regulators that help reduce water pressure in concrete radiator, a two-pipe heating system is being configured. After redistributing the pressure, the temperature in all radiators is equalized.

How can you make a two-pipe from a single pipe?

Since the main difference between these systems is the separation of streams, this modification is quite simple. It is necessary to lay another pipeline parallel to the existing main. 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 in front of the boiler directly to the new pipeline.

Formed passing scheme water circulation. The exiting coolant must be directed through a new pipeline. For this purpose, the supply 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 remodeling process can present additional challenges. For example, there will be no space to lay a second highway, or it will be very difficult to break through the ceiling.

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

One of the decisive factors in creating optimal conditions Living in a city high-rise building or a private house is the arrangement of a heating system. A two-pipe or single pipe system heat supply. A two-pipe system is more often used. What a two-pipe heating system is and how it differs from a single-pipe one, the features of its installation - all this will be discussed in the article.

There is no clear answer to the question of what would be better: a single-pipe or two-pipe heating system.

When choosing, you need to take into account ease of use, efficiency, durability, cost and installation complexity.

If your budget allows, then it is better not to save money and opt for the two-pipe option. If it is necessary to provide heat country house, then you can give preference to a single-pipe system. Since a two-pipe heating system in a private house will cost more. But its efficiency is much higher.

In addition, two-pipe heating is easy to operate. You can do the installation yourself. The two-pipe heating scheme is considered more popular. Buying double the number of pipes for installation is always worth it. For equipment of a two-pipe system there is no need to use pipelines with large diameter. During installation, fewer fasteners, valves, and fittings are required.

Thus, to heat the private sector or urban high-rise building, a two-pipe heating system diagram can be used. The choice of a particular option depends on the consumer, his wishes and financial situation.

What is special about two-pipe heating?

The highest quality heating, comfortable conditions residence can be achieved through the use two-pipe scheme. Feature of the scheme: two pipes are installed in each battery. Hot water circulates in the first pipe. It is connected to all heaters in parallel. The water that has already cooled flows back into the system through the next pipe.

Taps are installed in front of the heating device, which are used to shut off the heat supply. With a two-pipe system, the heater temperature will be low. But the level of costs will be lower than with a single-pipe network.

Horizontal and vertical two-pipe heating system

The two-pipe heating system can be vertical or horizontal. The difference is in the type of connection of all structural elements into one mechanism. Vertical scheme involves connecting all parts of the system to a vertical riser. Among the advantages is the absence of air locks. Among the disadvantages is the higher cost of installation. Vertical two-pipe heating system multi-storey building is the most suitable. Since each floor can be separately connected to a common riser.

For one-story houses more the best option considered two-pipe horizontal system heating the building. This scheme has its own characteristics. All radiators are connected to a horizontal pipeline. This type of heating is especially convenient in wooden houses or panel-frame rooms without walls. Risers are usually located in corridors. Since in a horizontal system the wiring does not look particularly attractive in appearance, all pipes when installed construction work They try to hide it under a screed.

The layout of a horizontal two-pipe network can be lower, upper or combined. For the private sector, the best option is a horizontal two-pipe heating system with bottom wiring and not natural circulation coolant. In this case, water is supplied to the risers through main pipelines from below.

Heating two-pipe network with top wiring

Top wiring involves laying the pipeline in the attic or under the ceiling. A similar two-pipe heating system with overhead wiring is used extremely rarely. Because it is characterized by high consumption of material and does not fit well into the interior of the room. But a two-pipe heating system for a two-story house with a combined wiring diagram is used quite often. Suitable for areas with frequent power outages and for small premises.

A two-pipe vertical heating system involves parallel connection of batteries. The special feature is that it is mounted expansion tank. The distribution pipeline is at the top. The coolant from the boiler flows into all batteries. The horizontal and vertical schemes have differences: a horizontal two-pipe heating system involves installing all pipes with a slight slope.

Heating two-pipe network with bottom wiring

The main difference between a system of this type is the supply pipeline: a two-pipe heating system with bottom wiring involves its placement at the bottom, near the return line. With this layout, water moves through the pipes in the direction from bottom to top. The coolant, having passed through the return lines, enters the pipe thanks to the heating elements. Then the water enters the boiler. It should be noted that the two-pipe heating system with bottom wiring requires the installation of Mayevsky taps. This is necessary to prevent the formation of air locks. Such taps are mounted on each battery separately.

Scheme of a two-pipe heating network

A two-pipe system involves the presence of 2 pipes connected to each battery. This heating scheme is two-pipe one-story house includes the following components:

The expansion tank is located at the top point of the heating system. The slope of the return and supply pipes should not be more than 10 cm by 20 linear meters. Often during installation the system is divided into two elbows if the lower distribution pipe is located at front door. It is created from the location of the highest point in the system. With a two-pipe heating system autonomous system with top wiring, the installation diagram may be different.

Two-pipe system with unnatural circulation

For two-story cottages and in the private sector, a two-pipe heating scheme with forced circulation coolant. The bottom line: all heating devices operate as an individual system. This allows you to adjust each branch. For a separate branch, you can choose your own, or connect one pump to the entire system. Pumps come in different capacities and have different sizes connecting elements. Circulation cost pumping devices not tall.

It must be said that a two-pipe forced circulation heating system involves connecting each of the batteries to the supply pipe by wiring. Each radiator has its own outlet to the return pipe. Such a system allows you to regulate the temperature level in any of the rooms.

Installation algorithm for a two-pipe system

Anyone can install a two-pipe system. The main thing is to know the procedure and have all the necessary equipment with you.

It doesn’t matter which two-pipe heating system for a private house is chosen, a scheme with top or bottom wiring, the following tools may be required for its installation:

When the installation option is selected, a series of calculations should be carried out and a refined diagram of the system should be drawn up.

As a rule, installation of a two-pipe heating system is not complicated and consists of the following steps:

You can decide which heating system is better, single-pipe or double-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. - This is a rather complex structure. Redo it after finishing finishing works difficult and sometimes impossible. Let's look at how the two differ different approaches to arranging the heating of 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 special feature of this solution is the absence of a return water supply line. The batteries are connected in series, assembly is carried out in a short time and does not require complex preliminary calculations.

How does a single-pipe line work?

In such designs, the coolant is supplied to the top point and flows down, sequentially passing through heating elements. When arranging a multi-story building, it is practiced to install an intermediate pump that creates required pressure in the supply pipe to push hot water through a closed circuit.

Given the small height of the house and a limited number of heat consumers, water circulation occurs quite efficiently.

Vertical and horizontal schemes

The construction of a single-pipe main is carried out in a vertical and horizontal orientation. Vertical wiring is installed in buildings with two or more floors. The coolant is supplied to the radiators, starting from the top. Horizontal heating mains are most often used for arranging single-level buildings - houses, cottages, warehouses, offices and other commercial facilities.

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

Advantages and disadvantages

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

• Installation is carried out quickly, which is important when modern requirements pace of construction. Besides, appearance a single-pipe manifold with a height of several meters is superior to a complex system of two lines.
• Small budget. Cost calculations show what is required for construction minimal amount pipes, fittings and fittings.
• If consumers are installed on bypass, then it becomes possible to regulate the heat balance separately in each room.
• Use of modern locking devices makes it possible to modernize and improve the highway. This allows you to replace radiators, insert devices, and other improvements without a long shutdown of the system and draining water from it.

This design also has its disadvantages:

• The sequential arrangement of the batteries does not exclude the possibility of adjusting the heating temperature in them individually. This entails cooling of all other radiators.
• Limited number of batteries per line. It is not advisable to place 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 financial investment. The power plant can cause water hammer and damage to 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 insulation measures.

Two-pipe heating system

This design has a more complex structure, but is also effective and functional.

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

Operating principle and operating diagram

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

Classification: bottom and top wiring

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

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

With the upper option, the entire interchange is arranged in the attic or technical floor of the building. At the same time, an expansion tank is installed, which is carefully insulated. After the boiler, a pump is installed that supplies coolant to the upper level.

In the case of bottom wiring, the hot riser is located above the return. The heating boiler is installed in the basement or on the first 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:

• The simultaneous transfer of coolant to consumers allows you to regulate the temperature individually in each room. If necessary, radiators are completely closed if the room long time don't use it.
• The ability to remove individual devices for repair or replacement without turning off the heat supply to the remaining batteries. For this purpose they are used Ball Valves, with the help of which the flow of water at the inlet and outlet of the radiator is blocked.
• There is no need to install a centrifugal pump. Water rises upward from the boiler due to the difference in temperature at the inlet and outlet.
• Selecting a passing or dead-end design option. This makes it possible to balance the heat distribution without making constant adjustments and adjustments.

The design disadvantages are:

• Use of more pipes and components during construction. This leads to more complex construction, increased financial and time costs.
• Cost increases 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 this is - additional expenses and difficulties with maintenance.

What's better?

What to choose: a one- or two-pipe design is up to the master to decide individually. Each of them has its positive negative properties, related to the features of design, construction, routine maintenance and improvements.

For small house up to three floors high, an option with one riser can be ideal solution, when at minimum investment high-quality results are achieved. But, it should be remembered that in such cases the installation process becomes significantly more difficult. additional equipment and replacement of worn-out radiators.

How to convert a one-pipe into two?

A two-pipe system is much more efficient 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 a return riser and attach batteries to it.

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

If you have experience in this area, please share it. You will provide a valuable service to craftsmen who have not yet made a choice in favor of one or another heating option for their home.

The heating system is divided into two types: single-pipe and double-pipe. Obviously, it is most profitable to install a more efficient one that will not only cope with its functions, but will also serve you for many years. So as not to be left “in the cold” and not make a mistake with the choice of heating system.

You need to thoroughly understand which heating system is best for you and why.

Thus, you will know which system is better from a technical point of view and how to choose it, taking into account your budget.

High water pressure ensures a natural cycle, and antifreeze makes the system more economical.

Disadvantages of a one-pipe system - a very complex thermal and hydraulic calculation of the network, since if an error is made in the calculations of devices, it is very difficult to eliminate it.

Also, this is a very high hydrodynamic resistance and an involuntary number of heating devices on one line.

The coolant flows into everything at once and is not subject to separate adjustment.

In addition, there are very high heat losses.

In order to be able to regulate the operation of individual devices connected to one riser, bypasses (closing sections) are connected to the network - this is a jumper in the form of a piece of pipe connected by the forward and return radiator pipes, with taps and valves.

To be able to regulate the temperature of each separately, the bypass allows you to connect auto-thermostats to the radiator.

In addition, this also makes it possible, in the event of a breakdown, to replace or repair individual devices without turning off the entire heating system.

Single-pipe heating is divided into vertical and horizontal:

• vertical – this is connecting all batteries in series from top to bottom.
• horizontal - This is a serial connection of all heating devices on all floors.

Due to the accumulation of air in the batteries and pipes, so-called traffic jams occur, which is a disadvantage of both systems.

Installation of a one-pipe system

The connection is made according to the diagram, using taps to vent the radiators, which close the taps and plugs.

System pressure testing - after which coolant is poured into the battery and the system is directly adjusted.

Two-pipe heating system

The advantage of a two-pipe heating system – this is the installation of automatic thermostats, which gives full control of the temperature in individual rooms.

This also includes the independence of operation of circuit devices, which is ensured by a special collector system.

The difference between a two-pipe system and a one-pipe system is that additional batteries can be connected to the first after connecting the main ones, as well as the possibility of extension in vertical and horizontal directions.

Unlike the one-pipe system, it is also possible to easily correct errors here.

Disadvantages of this system minimal if you have sufficient quantity material resources and have the opportunity to call a specialist.

Installation of a heating system with lower horizontal piping

This system allows the tank to be positioned open type V comfortable warmth place. Also, it is possible to combine expansion and supply tanks allowing you to use hot water directly from the heating system itself.

In systems with forced circulation, to reduce pipe consumption, the outlet and supply risers are located at the level of the first.

Owners of private houses often face a choice of what type home heating give preference. There are only two types of heating systems traditionally used in everyday life: one-pipe and two-pipe. Each type has both advantages and disadvantages. The difference between both systems is in different ways delivery of coolant to heating devices. What heating structure for own home It’s better to choose one-pipe or two-pipe directly to the owner of the house, taking into account his own household needs, the expected heated area and the availability of finances.

In the first option, heat is distributed throughout the house through one pipe, sequentially heating each room of the house. In the second case, the complex is equipped with two pipes. One is a direct supply of coolant to the . The other pipe serves to drain the cooled liquid back into the boiler for subsequent heating. A correct assessment of your own financial capabilities, an accurate calculation of the optimal parameters of the coolant in each individual case, will help not only decide on the type of heating system, but also competently.

You can understand and figure out what is best for you, a single-pipe or two-pipe heating system, only after carefully studying the technical nuances.

Single pipe heating system. General views

A single-pipe heating system can work with both a pump and natural coolant circulation. When considering the second type, you should delve a little into the existing laws of physics. It is based on the principle of expansion of a liquid when heated. During operation, the heating boiler heats the coolant, which, due to the temperature difference and the pressure created, rises along the riser to the highest point of the system. The coolant moves upward through one pipe, reaching the expansion tank. Accumulating there, hot water already fills all series-connected batteries through the downpipe.

Accordingly, the first connection points along the coolant flow will receive maximum heat, while the radiators located further away will already receive partially cooled liquid.

For large, multi-story buildings, such a scheme is extremely ineffective, although in terms of installation costs and maintenance, a single-pipe system looks attractive. For private one-story houses and two-story residential buildings, a similar principle of heat distribution is acceptable. Heating residential premises using a single-pipe circuit in a one-story house is quite effective. With a small heated area, the temperature in the radiators is almost the same. The use of a pump in longer systems also has a positive effect on the uniformity of heat distribution.

The quality of heating and the cost of installation in this case may depend on the type of connection. Diagonal connection radiators provide greater heat transfer, but are used less frequently due to the larger number of pipes required to connect all heating devices in residential areas.

The scheme with bottom connection of radiators looks more economical due to lower consumption of materials. From an aesthetic point of view, this type of connection looks preferable.

Advantages of a single-pipe heating system and its disadvantages

For owners of small residential buildings, a single-pipe heating system looks tempting, especially if you pay attention to its following advantages:

• has stable hydrodynamics;
• convenience and ease of design and installation;
• low costs for equipment and materials.

TO indirect advantages single-pipe system can be attributed to the safety of the supply of coolant, which diverges through the pipeline through natural circulation.

To the most common problems that owners of a single-pipe heating system have to face include the following aspects:

• technical difficulties in eliminating miscalculations in the work made during the design;
• close relationship of all elements;
• high hydrodynamic resistance of the system;
• technological limitations associated with the impossibility self-adjustment coolant flow.

Despite the listed disadvantages of this type of heating, a well-designed heating system will allow you to avoid many difficulties even at the installation stage. In view of the listed advantages and economic component, single-pipe schemes have become quite widespread. Both single-pipe and another type, two-pipe heating systems have real advantages. What can you win and what can you lose by choosing one of the types for your home?

Technology for connecting and positioning a single-pipe heating system

Single-pipe systems are divided into vertical and horizontal. In most cases, vertical wiring is used for multi-story buildings. In this case, all radiators are connected in series from top to bottom. At horizontal wiring The batteries are connected one after another horizontally. The main disadvantage of both options is frequent air jams, due to air accumulation in the radiators. The proposed diagram makes it possible to get an idea of ​​some wiring options.

Connection methods in this case are chosen at the discretion of the owner. Heating radiators can be connected via side connection, diagonal or bottom connection. The figure shows similar connection options.

Always for the owner of the house important aspect remains economic expediency equipment installed in the house and the resulting effect. Do not underestimate the option of a single-pipe heating system. Today in practice there are quite a few effective measures on improvement heating schemes this type.

Eg: There is technical solution, which allows you to independently regulate the heating of individual radiators connected to the same line. For this purpose, bypasses are created in the system - a section of pipe that creates a bypass movement of the coolant from the direct pipe to the return, bypassing the circuit of a certain battery.

Valves and flaps are installed on the bypasses to block the flow of coolant. You can install thermostats on radiators that allow you to regulate the heating temperature in each radiator or throughout the system as a whole. A competent specialist will be able to calculate and install bypasses to achieve maximum efficiency. In the diagram you can see the principle of operation of bypasses.

Two-pipe heating system. Operating principle

Having become familiar with the first type of heating system, single-pipe, it’s time to understand the features and operating principle of a two-pipe heating system. Thorough analysis of technological and technical parameters heating of this type allows consumers to make independent choice- which heating is more effective in a particular case, single-pipe or two-pipe.

The basic principle is the presence of two circuits through which the coolant disperses throughout the system. One pipe supplies coolant to the heating radiators. The second branch is designed to ensure that the already cooled coolant, after passing through the radiator, returns to the boiler. And so constantly, in a circle, while the heating is on. At first glance, the very presence of two pipelines in the scheme may repel consumers. Long length highways, the complexity of wiring are factors that often scare away owners of private houses from a two-pipe heating system.

This is at first glance. Like single-pipe systems, two-pipe systems are divided into closed and open. The difference in this case lies in the design of the expansion tank.

Closed with a membrane expansion tank are the most practical, convenient and safe to use. This is confirmed by obvious advantages:

• even at the design stage, it is possible to equip heating devices with thermostats;
• parallel, independent connection of radiators;
• the technical possibility of adding heating devices after installation is completed;
• ease of use of a hidden gasket;
• the ability to turn off individual radiators or branches;
• ease of system adjustment.

Based on the above, one clear conclusion can be drawn. A two-pipe heating system is much more flexible and technologically advanced than a single-pipe one.

For comparison, the following diagram is presented:

The Two-Pipe System is very convenient for use in a house in which it is planned to increase the living space; extension options are possible, both upward and along the perimeter of the building. Already at the work stage, it is possible to easily eliminate errors made during the design. technical errors. This scheme is more stable and reliable than a single-pipe one.

With all the obvious advantages, before choosing this type of heating, it is appropriate to recall the disadvantages of the two-pipe system.

It is important to know! The system is characterized by higher complexity and installation costs and rather cumbersome connection options.

If you have a competent specialist on hand and have carried out the necessary technical calculations, then the listed disadvantages are easily compensated by the advantages of a two-pipe heating circuit.

As in the case of a single-pipe system, the two-pipe option involves the use of a vertical or horizontal pipeline arrangement. Vertical system– radiators are connected to a vertical riser. This type is suitable for two-story private houses and cottages. Air jams are not a problem for you. In case of horizontal option- radiators in each room or room are connected to a pipeline located horizontally. Double pipe horizontal diagrams heating systems are mainly designed for heating one-story buildings and residential buildings large area with the need for floor-by-floor adjustment. Air jams that arise can be easily eliminated by installing Mayevsky valves on radiators.

The figure shows a vertical two-pipe heating system. Below you can see what a horizontal two-pipe system looks like.

Traditionally, radiators can be connected using bottom and top wiring. Depending on the technical specifications and the project - the choice of wiring option depends on the owner of the house. Top wiring is more convenient. All highways can be hidden in attic space. The system creates the circulation necessary for good distribution of coolant. The main disadvantage of a two-pipe heating scheme with top option wiring - need for installation membrane tank outside heated rooms. The top wiring does not allow making a fence process water for household needs, as well as connect expansion tank with a tank for hot water used in everyday life. This scheme is not suitable for residential properties with a flat roof.

Summary

The selected type of heating for a private home should provide all residents of the residential building with the necessary comfort. There is no point in saving on heating. By installing a heating system in your home that does not meet the parameters of the residential property and household needs, you risk spending a lot of money on refurbishment in the future.

Two-pipe or single-pipe heating system - the choice should always be justified, both from a technical and economic point of view.