Heating system distribution comb: operating principle, do-it-yourself heating comb installation, details in photos and videos

Owners of private country houses quite often began to abandon the traditional two-pipe distribution of the intra-house heating system, preferring a system of collector distribution of thermal energy. This is not just a fashionable trend in household heat energy, it ensures the economical use of fuel to generate a unit of thermal energy.

The system is guaranteed to provide the proper level of heating of all premises of a residential building according to the schedule established by the owner. Previously, when arranging heat supply systems, the main heat supply was taken as a basis, which could not provide high-quality heat supply - buildings close to the heat source overheated, and distant consumers froze. The same thing happened in the in-house heating systems of an apartment building, when the outer risers remained cold for many years.

Today, this problem is successfully dealt with by a collector system for distributing coolant, which has a more common name among specialists - distribution combs for heating. Owners of private households will not face any particular difficulties in switching to this system. The same cannot be said about multi-storey and apartment buildings, which for its implementation will require 100% replacement of intra-house distribution pipelines.

Areas of application of heating combs

The main purpose of the heating comb is to optimize and rationally distribute the coolant.
Without a correctly designed and installed distribution manifold, the heating may not operate correctly. The comb allows you to use all the useful power of the boiler, while obtaining maximum efficiency of the entire system. Collectors also allow you to include several consumer points in the system and be sure that the temperature of the coolant in all sections of the main will be the same. If you do not use a distribution comb, it often turns out that the radiator near the boiler is very hot, and the radiator, for example, on the second floor, is lukewarm.

This happens because the coolant cools down while it reaches the last battery. This effect can be avoided and the path of the coolant to the end consumer can be reduced by dividing it into specific circuits.

How to adjust the comb?

In order for the water heated floor to provide a comfortable temperature in all rooms, the distribution unit must be pre-configured. The system is regulated according to 2 parameters of the coolant:

The first parameter is set on the three-way mixing valve. This can be done manually by setting the required water temperature by turning the adjustment wheel. But more often, the circuit involves a thermostatic head with a remote sensor and a capillary tube, so the water temperature must be set on it. The sensor is tightly attached to the manifold.

Quantitative adjustment of the comb can be done either manually or automatically. By rotating the cap on the valve of each circuit and looking at the flow meter readings, you should achieve the calculated water flow, if you know it. If not, then you will have to adjust it by feel within a few days.

Automatic adjustment involves replacing the caps of special servo drives that remotely interact with thermostats in all rooms. Then the comb with the pump will supply as much coolant to the heating circuits as is needed at the moment. Servo drives on all taps will control the flows at the command of the thermostats.

Pros and cons of collector systems

The main advantage associated with the use of collector-type systems is the ease of control and operation. This is due to the fact that each of the elements can be controlled both centrally and individually. Consequently, it is possible to set the temperature for each specific room, and, if necessary, completely deactivate a device or group of devices. Moreover, this will not affect other parts of the system.

Video – Collector heating system

Each of the branches that make up the node must power only one battery (or, alternatively, a separate group of batteries), so the diameter can be insignificant. If necessary, using a collector, you can equip several circuits with different temperature parameters at once. This became possible thanks to the advent of a hydraulic arrow - a type of comb, which is a similar tube, but of a larger diameter.

This arrow is installed differently from a standard manifold - a kind of short circuit is created in the gap between the “return” and the supply. The liquid in the initial circuit will be permanently heated by the boiler and smoothly move inside the hydraulic arrow, as a result of which different temperature and coolant pressure indicators are demonstrated.

But there are, of course, disadvantages. First of all, buying a distribution comb is a very expensive pleasure and this is probably the only reason why these devices scare away potential buyers. The fact is that high-quality steel is used in the production process, which is why the products are much more expensive than steel pipes. In addition, for installation you will also need high-quality shut-off valves (the number of them depends on the number of circuits).

Another drawback is the mandatory presence of a circulation pump, without which the comb simply will not be able to function (read: additional electricity costs).

The most popular models

1. Oventrop Multidis SF.
An inch heating comb is designed to organize heating with a water heated floor. Made from tool steel, characterized by high wear resistance. Main characteristics:

permissible pressure in the circuit – 6 bar;
coolant temperature – +70 °C.

The series is produced with valve inserts M30x1.5, and can also be equipped with a flow meter for connecting circuits located in different rooms. A bonus from the manufacturer - soundproofed mounting clamps. The number of simultaneously serviced branches is from 2 to 12. The price, accordingly, is 5650-18800 rubles.

To work with high-temperature appliances, Oventrop suggests using a heating system distribution manifold made of Multidis SH stainless steel with a Mayevsky tap. The design can already withstand 10 bar at +95-100 °C, the comb throughput is 1-4 l/min. However, products with 2 circuits have slightly weaker performance. The cost of Oventrop SH hydraulic valves ranges from 2780-9980 rubles.

Plumbers: You'll pay up to 50% LESS on your water bills with this faucet attachment

HKV – brass underfloor heating manifold. Maintains a pressure of 6 bar in the range of +80-95 °C. Rehau version D is additionally equipped with a rotameter and a tap for filling the system.
HLV is a heating distribution comb designed for radiators, although its characteristics are identical to the description of HKV. The only difference is in the configuration: a Eurocone is already provided here and the possibility of a threaded clamp connection with pipes.

The manufacturer Rehau also offers to buy separate Rautitan combs with three outlets for pipeline installation using sliding sleeves.

Heating distribution manifold made of steel with anti-corrosion coating. It operates in systems with temperatures up to +110 °C at a pressure of 6 bar and is hidden in a special heat-insulating casing. The throughput of the comb channels is 3 m3/h. Here the choice of designs is not very rich: it is possible to connect only from 3 to 7 circuits. The cost of such hydraulic valves will range from 15,340 to 252,650 rubles.

Stainless steel manifolds are produced in an even more modest range - for 2 or 3 circuits. With the same characteristics, they can be purchased for 19,670-24,940 rubles. The most functional Meibes line is the RW series, which already comes complete with various connecting elements, thermostats and manual valves.

F – a flow meter is built into the supply;
BV – has quarter taps;
C – provides for extension of the comb through a nipple connection.

Each Danfoss heating manifold allows a system pressure of 10 atm at an optimal temperature (+90 °C). The design of the brackets is interesting - they fix paired combs with a slight offset relative to each other for more convenient maintenance. Moreover, all valves are equipped with plastic heads with marked markings, which allows you to set their position manually without the use of tools. The price of Danfoss models, depending on the number of connected circuits and additional options, varies between 5170 - 31,390.

The heating manifold can be selected for a Eurocone with 1/2″ or 3/4″ outlets or with a metric threaded connection. Far combs can withstand pressure up to 10 atm at temperatures not exceeding +100 °C. But the number of outlet pipes is small: from 2 to 4, but the price is the lowest of all the products reviewed in our review (730-1700 rubles for an unpaired distributor).

Tips for choosing

Despite the apparent simplicity of the combs, they need to be selected based on several technical parameters:

1. Pressure in the system - this value determines what material the distribution manifold can be made from.

2. The throughput must be sufficient so that the connected heating circuits do not “starve” from a lack of coolant.

3. Energy consumption of the mixing unit - as a rule, it is determined by the total power of the circulation pumps.

Possibility of adding circuits - this parameter should be paid attention only when in the future it is planned to build additional objects that require heating

The number of pipes on the hydraulic distributor must correspond to the number of connected branches (heating devices). In some cases, it is better to install several collectors, for example, in a two-story house - one block on each level. It is also possible to install unpaired combs at different points: one on the supply, the other on the return.

Finally, experts and experienced installers in their reviews advise not to skimp on buying a good collector. In order for it to serve for a long time and not cause any problems, the name on the box must be known.

What you need to know about the cons?

After the advantages of using distribution combs in heating systems have become clear, it makes sense to dwell on some of the disadvantages:

High price. Collectors are made of durable, high-quality metal, the cost of which is above average. High-precision locking equipment is also expensive. The more circuits a comb serves, the higher the cost of equipping it.
Energy dependence. Collector heating without a circulation pump does not work. Therefore, you need to prepare for additional payments for electricity.
High pipe consumption. The consumption of pipes in collector heating systems is several times higher than in conventional ones, since a separate loop must be pulled to each device. All this complicates and increases the cost of installation work.

The collector system, according to experts and those who already use it, is the most modern, reliable and efficient.

But at the same time, both its arrangement and operation are expensive.

Collector placement rules

If we are talking about a private house consisting of several floors, collectors are placed on each of them. They will be responsible for the heat supply to the rooms located on the floor on which they are installed. This helps save on fuel. These devices make the circuit of each floor autonomous. If there are rooms on one of the floors that are not used during the day, their temperature can be temporarily lowered.

However, you can adjust the temperature regime not only on the floor as a whole. Sometimes it is enough to turn off just one room or even just one radiator. This procedure will not affect the operation of all other heating devices. In addition, each radiator is heated evenly, since it receives coolant through a separate pipe that fits specifically to it.

If a heating scheme is drawn up for a multi-storey building, each floor should have its own collector, then it will be responsible for the operation of heating devices on that specific floor

Such a heat supply system may seem like a rather expensive structure, but during operation the benefits of its use become obvious. It pays for itself and the costs incurred at the installation stage will no longer seem excessive to you.

If there is a need for urgent repair of any of the circuits or a specific heating device, then the benefits of using a collector become obvious. The repairman will simply disconnect the damaged area or device from the coolant flow by closing the valve at the outlet of the distribution device.

Of course, the use of this heating system has not only advantages, but also disadvantages.

Of course, the pleasure of living in a warm place and being able to save on fuel and possible repair work is not cheap. But over time, all your initial expenses will pay off

For example:

Significant costs at the installation stage. Plain pipes are cheaper than the high-strength steel needed to make the manifold. This must be taken into account, and then add the cost of the locking mechanisms used in the circuit. As the number of circuits increases, costs also increase in direct proportion.
Requirement for a circulation pump. Such a pump is simply necessary for the operation of the beam circuit, and this entails increased energy costs.
Additional expenses. If a separate branch goes to each of the heating devices, you will have to spend money on additional pipes and pay for their installation.

An increase in the volume of work will lead to the fact that it may drag on for a long time. But during operation, this system will be more reliable and efficient.

You will learn about choosing suitable pipes for installing a heating system in our next article:.

Areas of application of heating combs

Collectors also allow you to include several consumer points in the system and be sure that the temperature of the coolant in all sections of the main will be the same. If you do not use a distribution comb, it often turns out that the radiator near the boiler is very hot, and the radiator, for example, on the second floor, is lukewarm.

Self-assembly of a heating manifold

Heating collectors are usually supplied assembled by the manufacturer; a standard-length circulation pump is installed later on an American-type threaded connection. Sometimes components are supplied to consumers separately; the assembly procedure consists of the following operations:

Flow meters are installed on the supply comb and the end air vent is screwed into the right end.
A valve is connected to the return comb with previously installed caps on the shut-off valves through the American connection on the right side.
On both combs on the left, through the American connection, connectors are installed to connect the compression electric pump, and they are positioned so that the fitting for installing the thermometer is on the front side.
A tee is screwed into the return comb, to which the thermostatic head is connected.
Using a threaded connection (American) for mounting electric circulation pumps and gaskets from the kit, the pump is connected to the upper and lower combs.
Upon completion of the work, pipes of standard diameter are connected to the collector block using the Eurocones included in the kit.

All main connections are sealed using rubber gaskets that come with the unit and electric pump; sometimes seals are missing in the tap and tee of the supply comb, then linen tow or other plumbing materials are used for sealing. To carry out the work, one adjustable wrench is enough, but it is important not to overtighten the nuts - this can lead to rupture of the gaskets.

After installing the entire system, it is necessary to carry out hydraulic testing - pressure testing, in which water is supplied to the main line under high pressure (usually its value is 1.5 - 2 times higher than the working one).

Rice. 18 PEX and PE-RT pipes

What is a hydraulic arrow

If pumping equipment of significant power is installed in a multi-circuit complex heating system, then even it will not be able to cope with the different conditions and parameters of the network operation. Such inconsistencies in the operation of different circuits will negatively affect the operation of the heating boiler and shorten the service life of expensive equipment.

Branched heating networks cannot work harmoniously due to the fact that each circuit has its own performance and pressure. But even if each circuit is equipped with its own circulation pump, taking into account the parameters of the main line, the problem of system fragmentation will only worsen. This will lead to unbalancing of the networks, because each heating circuit will have its own parameters.

To solve the problem, one common boiler must heat the required amount of coolant, but each circuit must receive the required amount of heated liquid from the collector. In this case, the functions of the hydraulic system separator are performed by the manifold. A hydraulic separator is needed to separate the boiler flow from the general circuit. Another name for a hydraulic separator is a hydraulic arrow or HS (hydraulic arrow).

The name of the device comes from the analogy with a railway switch. Just as a railway switch directs trains in the required direction, a hydraulic switch distributes coolant flows across separate circuits. Externally, the device resembles a piece of round or rectangular pipe with end caps. The device is connected through a pipeline to the collector and boiler and has several pipes in the side.

Setting up a comb for heated floors

Factory products undergo bench testing, as evidenced by accompanying documents containing complete information about all hydrotests performed under special conditions. The use of such compact devices with a guarantee of tightness of welded and threaded connections is the best option in any in-house heating systems. Such units are characterized by an ergonomic arrangement of controls, and installation inside special mounting cabinets does not interfere with access to control valves.

After installation, the collector is configured with the servo drive and thermal head removed

The coolant from the supply pipe and the return pipe is mixed inside each outlet or directly in front of the collector, but it is advisable to entrust the calculation of the optimal circuit to specialists.

Regulating the temperature of the floor surface involves performing several sequential actions:

Set the bypass valve to max, moving it to the 0.6 bar position. Triggering this node during the setup process causes an erroneous result.
Calculate the balancing valve, using for this purpose the temperature indicators at the return, supply line and outlet of the heating device, under the conditions of a standard coefficient of 0.9 and according to the throughput formula: K = 0.9 × [(tk – to/tp – to) - 1]).
Set up pumping equipment by calculating the boiling water flow rate and pressure loss on the circuits. It is allowed to set the minimum feed with a gradual addition of speed.
Balance the branches by fully opening the control units and smoothly closing them to the required position.

At the final stage of setting up the comb for the “warm floor” system, the flow rate of the mixing unit is linked with other heating devices.

It should be noted that installing a flow meter will greatly facilitate obtaining accuracy when setting up all components. It is recommended to set the processing parameters of the bypass valve device approximately ten percent lower than the established maximum pressure values of the pumping equipment.

Connection rules and installation features

Installation of the comb begins with attaching it with brackets to the wall, where it will be located openly or in a closet. Then you will need to attach the main pipes from the heat source to the ends and begin piping.

Option #1 – without additional pumps and hydraulic arrows

This simple option assumes that the comb will serve several circuits (say, 4-5 radiator batteries), the temperature is assumed to be the same, and its regulation is not provided. All circuits are connected directly to the comb, one pump is used.

The characteristics of pumping equipment must be correlated with the performance of the heating system and the pressure created in it. So that you can choose the best pump that is ideal in terms of characteristics and cost, we recommend that you familiarize yourself with the rating of circulation pumps.

A master with experience in manifold equipment knows how to correctly install a distribution comb and hide it in a cabinet so as to hide all the pipes

Since the resistance in the circuits is different (due to different lengths, etc.), it is necessary to ensure optimal consumption of the coolant by balancing.

To do this, balancing valves, rather than shut-off valves, are installed on the return comb nozzles. They can regulate (although not exactly, but by eye) the coolant flow in each circuit.

Option #2 - with pumps on each branch and a hydraulic arrow

This is a more complex option, which will be needed if necessary to power consumption points with different temperature conditions.

So, for example, in radiator heating, water heating ranges from 40 to 70 °C, a warm floor needs a range of 30-45 °C, hot water for domestic needs must be heated to 85 °C.

In the piping, the hydraulic arrow will now play a special role - a section of pipe that is blind at both ends and has two pairs of bends. The first pair is needed to connect the hydraulic needle to the boiler; the distribution combs are connected to the second pair. This is a hydraulic barrier that creates a zone of zero resistance.

For boilers with a power of 50 kW and above, it is recommended to use a distribution comb together with a hydraulic arrow. It is mounted vertically on the wall with separate brackets to avoid excessive horizontal overload

On the comb itself there are mixing units equipped with three-way valves - temperature control devices. Each outlet pipe operates its own pump independently of the others, providing the specific circuit with the required amount of coolant.

The main thing is that the total power of these pumps does not exceed the main boiler pump.

Both options considered are used when installing distribution manifolds for boiler houses. Everything you need is sold in specialized stores. There you can buy any assembly assembled or element by element (counting on savings due to self-assembly).

To further reduce future costs, you can make a heating distribution comb yourself.

The boiler room manifold is located in close proximity to the heating equipment and is exposed to high temperatures that only metal can withstand.

The local distribution comb is subject to less stringent requirements for heat resistance; not only metal pipes, but also polypropylene and metal-plastic pipes are suitable for its manufacture.

For a local distribution manifold, the easiest way is to select suitable scallops from those that are commercially available. In this case, you should take into account the material from which they are made - brass, steel, cast iron, plastic.

Cast scallops are more reliable, eliminating the possibility of leakage. There are no problems connecting pipes to the manifolds - even the most inexpensive models have threads.

Distribution combs assembled from polypropylene parts are attractive due to their low cost. But in an emergency, the joints between the tees will not withstand overheating and will leak

Craftsmen can solder a manifold from polypropylene or metal-plastic, but they will still have to buy threaded tips, so the product will not be much cheaper in terms of money than a ready-made one from the store.

Externally, it will be a set of tees connected to each other by tubes. The weak point of such a collector is insufficient strength at high heating temperatures of the coolant.

The comb can be round, rectangular, or square in cross-section. Here, the transverse area comes first, rather than the cross-sectional shape, although from the standpoint of hydraulic laws, rounded is preferable. If the house has several floors, it is better to install local distribution manifolds on each of them.

How to assemble a heated floor comb?

It must be said that assembling a comb with your own hands is a very real task. If you installed the heating system in your home yourself, then you have enough skills to assemble this unit. Moreover, factory-made combs are supplied complete and are accompanied by installation instructions with diagrams and explanations. An example of such a diagram is presented below:

Note. By agreement with the seller, the comb can be supplied assembled; you just need to indicate the number of bends for connecting the pipes. The circulation pump, three-way valve and other fittings are not included in the kit; they must be purchased separately. They are often sold as a separate unit that connects to the comb manifolds.

At the moment, distribution units are made of the following materials:

brass;
stainless steel;
plastic (polyamide).

A factory-made plastic comb is truly a godsend; its cost is much lower than that of its metal “brothers.” Moreover, in practice it functions no worse; in any case, there are very few negative reviews about it. Assembling a distributor from any material consists of connecting the sections of the comb to each other, screwing a mixing unit from a pump with a valve to them, installing thermometers, taps and air vents. The finished collector can be installed in place and pipes connected to it.

For those who do not want or cannot purchase a plastic manifold, there is another option - to independently solder a comb from polypropylene pipes and fittings. To do this, you need to stock up on the required number of tees and sections of PPR pipes of the same diameter. Since tees cannot be connected directly to each other, pipe blanks should be cut to serve as connecting nipples.

Advice. A homemade polypropylene comb should not look as sloppy as in the photo shown above. To do everything beautifully, you need to carefully select the length of the nipples from the pipes, then the tees will fit tightly to each other.

If you have managed to solder the required number of tees, all that remains is to securely attach them to the wall, and then fit the rest of the piping around them: pump, valve, taps and other parts. We must try to ensure that the massive parts are attached to the wall independently, and do not load the distributor with their weight. True, a self-made comb will be devoid of flow meters and control valves, but if necessary, they can be purchased and installed additionally.

Operating principle of the collector system

The manifold is a metal comb with leads for connecting pipes and devices. The collector heating system is two-pipe. Hot water is supplied through one comb, and pipes that collect cooled water (return) are connected to the other.

The collector heating system has a closed expansion tank and a circulation pump that moves the coolant. The minimum volume of the expansion tank is equal to at least 10% of the total volume of all heating devices. The pump is installed on any of the pipelines leading to the collectors.

The collectors are installed in special cabinets, which are mounted in wall niches or in a separate room. The collector cabinets should be located at approximately the same distance from each heating device. Pipes can be connected to radiators from above, from the side and from below. The most widespread is the lower pipe connection to radiators. This option provides the best opportunity to hide pipes in the floor. A shut-off valve is installed on each hydraulic circuit coming from the collector, which makes it possible to turn off any radiator without disturbing the operation of the heating system. A valve is installed on each radiator to release accumulated air - a Mayevsky valve, or on the manifold - air release valves. Heat meters and drain valves can also be installed on the collector.

Each hydraulic circuit located after the manifolds is an independent system. This made it possible to create heated floors. These are floors in which pipes are laid in parallel or in the form of spirals, which heat the floor surface. The pipes are laid on a heat-insulating pad, connected to the collector and, after checking the tightness of the pipelines, they are filled with concrete. The height of the screed should not exceed 7 cm. The laying pitch and diameter of the pipes are determined by calculation. The length of one heating spiral should not exceed 90 m. Basically, metal-plastic pipes are used for heated floors, which easily accept any curvature.

When heating a warm floor, the temperature decreases according to the height of the room, and when installing radiators, on the contrary, the higher, the warmer.

Rules for connecting the distribution comb

The selection of the collector location must be based on the principle of equidistant location of the equipment from it. If this requirement is neglected, then high pressure arises at more extended nodes of the system, which will negatively affect this area. Therefore, the permitted difference in lengths of pipe sections from the comb to the batteries should not violate the 1:2 proportion.

Or, in other words, the length of the pipelines from the first radiator to the collector and subsequent batteries cannot be less than 2 times. If the specified characteristics are exceeded, it will not be possible to ensure accurate operation of the comb. If the house has many floors, the collector is installed on each of them. There are a number of methods for placing the distribution comb in the heating system: in a special installation cabinet or directly on the wall.

When installing the collector on the walls, specialized niches are made in them. To install the heating comb, determine a place above the floor level. In terms of dimensions, the niche must correspond to the dimensions of the comb, taking into account attachments and piping of heating pipelines. The space where the collector is located must certainly be dry. Usually, for these purposes, a corridor or an auxiliary room is chosen, where the distribution system will not disturb anyone.

In case the distributor is located in a transition, it is recommended to place a special metal cabinet with a door and holes for the input/output of pipelines in a niche. This design is usually equipped with special fasteners to securely fasten it.

Advantages of a collector heating system

The main advantages are the ease of control of the design, in particular:

Each circuit element can be controlled independently and centrally. This means that in the house the owner sets the temperature of each room and has the opportunity to turn off the radiator or group of radiators from heating altogether.
Reduced costs. Due to the supply of coolant to only one battery, smaller diameter pipes are suitable for forming a pipeline. Plus the ability to disconnect the battery from the heat supply - together you get some good savings. The liner is most often recessed into the screed, taking into account the minimum distance from the boiler and radiator.
You can set up several circuits with different heating parameters, including temperature changes, using a hydraulic arrow.

Also, when installing a collector for a heating system, you need to take into account the disadvantages:

increased energy consumption;
difficulties in equipping beam distribution and recessing devices into the screed;
increased hydraulic resistance in the system.

When arranging independent heat supply to different circuits, it becomes necessary to use circulation pumps for each circuit, which means that the system becomes energy-dependent.

Principle of operation of the collector

The main purpose of the device is to uniformly supply heat flows from the main line along the circuit circuits and to the heating radiators, as well as to supply return water to the boiler. The device acts as an intermediate distribution unit and consists of a supply and return comb. In this case, the supply element is responsible for supplying coolant to the circuit, and the return element is responsible for returning the liquid to the boiler.

From each comb there are leads for connecting circuits leading to heating devices. The distribution comb of the heating system with leads can be supplemented with shut-off valves, which help regulate the pressure inside the circuits and, if it is necessary to carry out repairs or reduce the heating intensity, shut off the coolant supply to a separate branch.

The principle of operation is simple - a thermal collector for heating a house transfers coolant through a supply comb to the circuits, while inside the intermediate unit the coolant circulation rate is reduced due to the increased internal diameter of the structure, and this ensures uniform redistribution across all outlets.

The coolant is directed through connecting pipes, enters separate circuits and is transported to heating radiators or to a heated floor grid. Then the structure is heated, and the liquid is redirected through another pipe to the collecting comb of the collector. From here the water flows to the heat generator.

Ready-made designs of heating collectors

The construction market offers products from various manufacturers of collector heating equipment, including such popular brands as ProfLine, Valtec, Luxor, Rehay, Shout.

The most commonly used materials in the manufacture of manifolds are stainless steel and chrome-plated brass; much less often in domestic heating, equipment is selected from low-cost polymers (polypropylene), which do not provide for the installation of flow meters and valves for servo drives.

All ready-made factory designs are assembled according to the same schemes with minor design differences - the supply and return combs can be higher or lower in relation to each other, some models are additionally equipped with another pipe (bypass) and a temperature sensor to turn off the circulation pump at elevated media temperatures. The most expensive is the choice of system components made of brass, which is three times more expensive than stainless steel; other elements also cost a lot, for example, the cost of one flow meter can reach up to 10 USD.

Rice. 16 Auditor CO 4.0

Types and modifications of heating combs

Modern distribution manifolds can be of two main types. Due to differences in their structure, they are used in different cases.

Radiator manifolds have found their application in small volume systems. They are well suited for heating systems of a two-story private house, which have several heating circuits and heated floors. Such collectors are available with various coolant supply options: bottom, top and side. Most often there are distribution combs with a lower coolant supply. This is due to the fact that pipes laid under the floor retain heat much better, and are also completely invisible and do not spoil the appearance of the rooms.
Distributive hydraulic arrow. This heating device is designed for multi-storey buildings and large volumes of liquid. The fundamental difference in the structure of such a collector is the container, which is located between the distribution combs and combines them. This is necessary in order to equalize the pressure throughout the system, and also to prevent a sharp temperature change in the pipes. The efficiency of a hydraulic arrow can be maximized if there is a circulation pump for each individual circuit.

On the market you can find combs made of various metals and alloys: brass, stainless steel and polypropylene. Each material is designed for a specific type of heating system and has its own pros and cons.

Depending on the number of outputs, you can find models from 2 to 10 serviced circuits. Depending on the need, you can find manifolds equipped with circulation pumps, additional drain taps or holes. It is also not uncommon to find thermostats and sensors in the design of the comb.

Features of the radiator block

With this model, the distribution block directs the coolant directly to a specific radiator. Today, several types of block connection are known: top, bottom, side and diagonal installation.

The bottom connection is most often used, which is due to the aesthetic factor. The distribution structure is placed under the baseboard or floor covering, where the structure is invisible. This type of collector is always equipped with a circulation pump, and it is placed at the entrance to the return pipe.

Types of heating combs

In stores you can purchase heating manifolds that differ in the number of connected circuits, materials of manufacture, the presence of thermal heads or flow meters, manufacturer and a host of other characteristics. However, in general they can be divided into three main groups:

manifold for boiler room;
hydraulic arrow;
local combs.

Heating distribution manifold for boiler room

A manifold for a boiler room is usually mounted from large-diameter metal pipes and is equipped with several pumps to circulate fluid through the system. This collector system consists of a supply comb, through which coolant is supplied to the heating system of the entire house, and a comb, which receives the cooled liquid and sends it to the boiler for heating. Pumps with shut-off valves are installed on the supply comb, and shut-off valves are usually installed on the receiving comb.

A necessary element of complex heating systems is a hydraulic arrow, which maintains the best temperature difference in the supply and exhaust circuits. Thanks to this difference, the operation of the heat generator installation is maintained with the lowest energy consumption. We will talk more about the hydraulic gun later in the article.

The boiler room manifold is also equipped with pressure monitoring devices and temperature sensors to monitor the operation of all elements. Such an element has fairly decent dimensions and is usually installed in a special room.

Hydroarrow

A hydraulic arrow is a device that is used to equalize pressure and temperature in a heating system. In the simplest case, a heating boiler circuit approaches it on one side, and a radiator circuit on the other, thus performing the function of a distribution manifold.

For more complex systems, a hydraulic arrow is installed in the boiler room in front of the distribution manifold, performing the same function - equalizing pressure in the system.

Structurally, the hydraulic arrow is made in the form of a vertical pipe, at the ends of which elliptical plugs are installed. If the coolant leaving the boiler has a temperature, and therefore a pressure, higher than necessary, then when it enters the hydraulic arrow, part of it goes into the heating circuit, and part of it is mixed with the cooled coolant from the return. Thus, stabilization and self-regulation of temperature and pressure in the system occurs. Visually, various cases of fluid flow are shown in the diagram:

The hydraulic distributor allows you to:

avoid sudden temperature fluctuations that reduce the service life of the system;
maintain the volume of water in the boiler heat exchanger at a constant level;
maintain thermal equilibrium by separating the hydraulic circuit of the heat generator from the general system main.

The most complete optimization of the operation of a system with an installed hydraulic arrow is achieved through the use of a separate circulation pump for each circuit.

Heating comb

The distribution manifold for heating, unlike the boiler manifold, has much more modest dimensions, however, it performs similar functions. With the help of such a comb, the coolant coming from the boiler room is distributed either to consumers on the floor, or to various groups of consumers (underfloor heating collector, heating radiator collector).

The principle of operation is also somewhat different. If in the boiler manifold assembly the cooled coolant is completely replaced with heated liquid, then in the distribution comb they are also mixed and fed back into the system.

The functions of the hydraulic arrow in the combs are usually assigned to an additional circulation pump. With its help, the local heat-carrying fluid moves in a circle, entraining an additional portion of the heated coolant due to the different temperatures of the flows. At the same time, chilled water or antifreeze enters the main line. In accordance with this operating principle, a dosed amount of coolant is distributed into one or another heating circuit.

The distribution comb of the heating system is usually installed when there are three or more thermal appliances in one room and when a heated floor is installed. It helps to optimize the functioning of the entire complex and reduce the energy consumption of the heat generator.

Both the collector unit in the mini-boiler room and the distribution comb at first glance perform overlapping functions, but it is their joint use that makes the operation of the entire heating complex highly efficient.

How to build a collector yourself?

You can buy a ready-made connection, choosing one that would approximately meet the needs of your home. But achieving an exact match is quite difficult. Therefore, it is better to make a heating comb yourself. Let's figure out what is needed for this.

Planning stage

There are a number of parameters of the heating system of the house that you should know when building a unit.

The number of circuits through which heated water will pass.
The number and technical characteristics of the heating equipment included in the scheme.
Additional equipment involved in installation. This refers to pressure gauges, thermometers, taps, storage tanks, valves, pumps, etc.

It is also necessary to provide for the possibility of increasing the load if over time it is necessary to build in elements that were not taken into account in advance. This could be, for example, solar panels or a heat pump.

It is necessary to foresee in advance not only the number of circuits operating in the heating system, but also additional equipment that will be included in the overall scheme

Determining the block design

The design of the future node depends on the connection point of each circuit. After all, there are some connection nuances that cannot be ignored.

Boilers (electric and gas) must be connected to the comb from above or below.
The circulation pump should be connected from the end of the structure.
Solid fuel units and indirect heating boilers also need to be cut in from the end.
The supply circuits of the heating system are connected from below or from above.

For clarity, it is necessary to make a drawing of the future compact and neat unit. This will help determine the quantity and types of materials we will need. All necessary dimensions and threaded connections with thread pitch are also applied to the drawing. All circuits should be marked to guide the drawing when connecting.

This drawing shows a four-way manifold. You may not make a drawing and will limit yourself to a sketch, but do not forget to put on it all the dimensions necessary for the work

The distance between the nozzles of both combs should be from 10 to 20 cm. These are the optimal parameters for maintenance. The distance between the supply and return combs themselves should be within the same limits.

Features of narrow washing machines

Those who choose narrow washing machines are guided by the goal of saving living space, which is already small. And if this is a front-loading machine, then the lid also serves as a shelf, and its advantage is that it can be built into the kitchen work surface or under the bathroom sink. But narrow units with a vertical loading type allow you to add a forgotten item during the washing process.

Since the drum is not as large in diameter as in a standard machine, this affects the number of revolutions and, accordingly, the laundry may not be practically dry at the end of the process. Let's highlight machines of two washing classes and discuss them.

Class A

Good loading parameters for a narrow machine: 4.5 kilograms.

There is a choice of spin speed, delayed start, starching, the presence of a 3D-AquaSpar system and a FuzzyLogic control system.

No child protection. Lighting indicators indicate the washing progress.

Class B

Are there washing machines 55 cm wide? Yes, and one of these copies is DAEWOO DWD-CV701PC (height - 60, width - 55, depth - 28.7). Has a maximum load of 3 kilograms. The optimal choice for young mothers: it is almost silent and makes it possible to wash baby clothes at a temperature of 80 degrees. Energy consumption class - A. A washing machine with a height of 60 centimeters under the sink makes it possible to save space. It has an innovative design that will please the eye. The menu includes a shortened wash cycle.

Heating circuit control

With high-quality temperature control of the coolant, its flow rate remains unchanged unless additional automation equipment is installed. Without them, the volume of water passing through the circuit is adjusted only manually - by valves and rotameters located on the supply/return manifold. But thermal valves can also be controlled automatically if you install servos on them.

Servo drives are attached to thermostatic valves on the return manifold and control them at the command of the controller

The system works like this: in the rooms there are wired or wireless thermostats that monitor the air temperature and are connected to a single control unit (controller). Receiving signals from room thermostats, it opens and closes the valves on the heated floor comb using servo drives. In this way, the controller can control underfloor heating and the radiator system simultaneously, as shown in the diagram:

In addition to temperature regulation together with thermostats, the controller can do a number of interesting things:

respond to changes in weather conditions outside;
preheat the required premises by a given time;
turn off underfloor heating in unused rooms;
controlled remotely via GSM connection or the Internet.

The use of servo drives and automation equipment not only increases the comfort for residents, but also allows you to save 15-20% of the money spent on energy costs and thus reduce the cost of heating a private home.