Manifold for underfloor heating with their own hands

Manifold for underfloor heating with their own hands

Constructions of autonomous heating systems are increasingly looking to the ideal. Maximum performance, minimum cost, reliability and durability - standard requirements, which are now placing users to heating units and systems. One of the nodes, providing a minimum efficiency and performance of the heating system is a manifold. Collect Manifold for underfloor heating with their hands quite easily, knowing his scheme, and understanding how it should work.

What is the unit for heating collector

The manifold is an assembly of plastic (less metal-) pipes, valves, gauges, valves, fittings and other ancillary components. The collector is designed for mixing the coolant flowing from the different heating circuits, and further distribution of it though. As a result, the mixing temperature of the liquid is aligned, respectively, the temperature in the heated areas is constant and stable.

The correct manifold assembly depends on the quality of the system of underfloor heating.

Operating principle any known heating - heated coolant after passing over all contours and tubes cools, and under the action of the circulation pump or natural circulation again fed into the reservoir where it is mixed via flyback pipe (return line). The proportions of the heated and the cooled heat medium are regulated by special valves, its temperature is controlled by heat sensors, weather sensors and pressure sensors. If the heating system is too extended or layout of the house does not allow to organize the natural circulation, the collector include a circulation pump.

Typically, in an apartment or in a house connected to the boiler, radiators, sometimes improvised registers. In any case, the temperature of the coolant in the radiator should be within 70-95 0 C. When connecting "Heated floor" system, which is often done in modern flats, the coolant temperature should not exceed 30-55 0 C. According to sanitary standards, the maximum temperature floor heating must be not more than 30 0 C, or outdoor decorative coating (linoleum, MDF, PVC tiles) will warp, indoor air is overdried and walking on hot surfaces are not very comfortable.

Therefore, in such cases, the system turns on the collector - in fact the temperature difference in the central heating system and the system "warm floors" substantial and produces only one boiler temperature. Another reason for the collector - Heated floor has a larger extension tubes. Therefore, the total system pressure drop. To maintain the pressure at a required level it is necessary to install the circulation pump, which enters the collector structure.

The standard collector circuit consists of the elements:

  1. The mixing valve of two- or three-way.
  2. Shut-off valves and valves for balancing.
  3. A temperature sensor and a pressure gauge.
  4. Circular pump.
  5. Automatic air vent.
  6. For manifold assembly will also be necessary fittings, tees, reducers, nipples, and the other support elements for mounting.

Component parts properly assembled underfloor heating manifold.

Powered manifold as follows: when the temperature rises above a predetermined value the thermal head valve closes and the hot heat carrier is supplied in a smaller amount. On cooling the coolant thermal fluid valve takes more. The heating medium return flow from the tube fed with pressure, and of the supply pipe - when necessary. Thus, the average temperature of the coolant remains at a constant level.

Purpose Valve Manifold

Two-way valve allows the coolant in one direction, but has a low throughput. Positive moment in the application of the two-way valve - a hot heat transfer fluid is supplied smoothly and without shocks. Such valves due to the small capacity are used in small spaces - up to 200m 2. The latest models are equipped with servo valves. Servo - engine valve position sensor precise to accurately and stepwise to open / close the passage opening.

The operating principle of the two-way valve in the system "warm floor".

The three-way valve mixes or divides the coolant flow. Another name for the three-way valve - the mixing or separation. The valve body has three nozzle through which it is connected to the heating pipes. The valve receives coolant from the boiler, passes it to the heating system, and also receives heat transfer fluid from return line for mixing it with the hot supply. Three-way valve installed in autonomous heating systems at the outlet of the collector system, where there is no need to restrict the flow at a uniform mixing.

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If the coolant circuit wiring is installed several collectors, the output of each splitter is installed with the air vent. Bleeding is performed with the upper side of the stem, the drain valve is mounted from the bottom and serves for emptying the system when repairs.

Some simplified heating circuit does not require mixing of coolant flow, and therefore the valve can not be installed. To maintain a constant temperature in such systems is only one circulating pump. The pump should be installed only in the return tube to avoid excessive intake of fluid from the heating system.

To automatically adjust the temperature in "warm floor" system can connect weather sensors. How does such a sensor: a sharp cold snap on the street causes more quickly and to cool the room, so the heating should automatically increase. Weather sensor delivers the signals to the switching on / off of the boiler or the increase / decrease in the degree of the hot and the cooled coolant mixing. Manual adjustment of temperature depending on the weather inefficient and too inaccurate. Modulating the temperature sensors is checked several times in a minute and, if necessary servo valve crank in one direction or another at 5 0 C.

If you do not know how to assemble manifold floor heating, you can search the sales units in the assembly.

Simple collector for underfloor heating

To build the simplest reservoir need valve mixing to ¾ inch nipple and adapter to ¾ inch tee, elbow (90 0) and the sleeve-American to ¾ inch, a circulation pump in a yield of 1-inch ball valve to ¾ inch, a collector connector half inch and a collector ½ or ¾ inch connectors with external and internal threaded ¾ inch, air vent and drain valve.

Multi-circuit manifold for underfloor heating

Collect multi-circuit manifold for underfloor heating with their own hands is not difficult. Structurally it consists of a thermal head with a sensor (sensor - remote type), the mixing valve, American on ¾ inch nut onto ¾ inch tee and the pin 1 inch, the circulation pump connected cranes ½ inch, inch plug manifold half-inch ball valves , ½ inch fitting, coupling nuts for the pump and plastic pipes ½ inch diameter.

Wiring diagram for the underfloor heating manifold.

If you are connected to the collector tube "warm floor" system, it is recommended to use compression fittings. Before connecting to the pipe is shallow chamfer, so that the pipe fits into the bearing seat. After installing and connecting the entire collector system to the boiler and to the "warm floor" is necessary to pressurize the pipe system check for serviceability.

Crimping is performed 3-5 hours to the presence of even the slightest leak it could manifest itself. Also, for a few hours the system will show the maximum heating temperature of the room. All collector circuit is placed in a special collecting case, which is mounted on a wall near the boiler or installed near the place of connection to the warm floor.

How to choose a water collector for floor heating and set it with his own hands - valuable advice of professionals

Collector for water floor heating - it is one of the main elements of the entire system. Thanks to him, you have the ability to maintain a certain temperature for heating. Without this component Heated floor will not work effectively. Naturally, it is necessary to know the principle of operation and characteristics of the installation works.

Before you install a collector for underfloor heating is necessary to understand, it has a device:

  1. The product is equipped with a circulation pump is necessary.
  2. Two collectors.
  3. Mixing valve (it may be 2-wire or three-way). Two-way characterized, that has a low throughput. In this case, the hot coolant is supplied without any abrupt discontinuities. It is best suited for rooms with an area less than 200 m2. The three-way valve can be used in complex heating systems. It is versatile.
  4. Shut-off and balancing valves.
  5. Pressure gauges, by which pressure control is performed.
  6. The sensor and the thermal head, which regulate the heating temperature.
  7. Breather.
  8. Fittings, tees, connectors and fasteners.

Any valve becomes clogged with time, as the system is rarely used distilled water. In order to be able to resolve this problem, install it on a removable coupling.

Features some of the structural elements

Manifold assembly can be mounted very quickly, but you need to have it in their structure contain certain mandatory elements:

  1. The flow regulator. It must be installed if your system contains multiple paths. When this tube length can be different. If it is not set, the heat distribution will be uneven. In this case, the flow rate adjustment allows to balance the flow of the heated fluid in each circuit.
  2. Thermostatically controlled. They help the system to react to fluctuations in temperature regime in the case of airing the room or changing weather conditions. Such controllers must be installed on each circuit. room thermostats are used to control the temperature.
  3. Mixing unit. Note that if your Heated floor is energized by the general heating system, the initial temperature of the coolant can reach 70-90 degrees Celsius. It is acceptable only for radiators or batteries. To reduce the temperature of the coolant, special mixing units are used. Thanks to them, mix hot and cold fluid.
  4. Mixing valve. It is responsible for the cooling fluid is too hot. Valve adjustment can be made manually as well as by a special automatic device.

Manifold for underfloor heating is necessary to choose correctly, it needs to take into account such nuances:

  • The most important parameter in the selection of such products is a diagram of a warm floor.
  • At the time of purchase, keep in mind that the device ensures the safety of the entire system. Therefore, do not buy very cheap phones.
  • You must select the product with all the features of your heating system. That is, the device should provide the necessary pressure in the system.
  • During the selection should also take into account the material of manufacture. For example, some of them may be made of brass, stainless steel and other metal. This parameter is often dependent on the price collector.

  • Pay attention to the complexity of the model. Perhaps in your case underfloor heating scheme allows you to install the device without any additional elements.
  • Note the area of ​​the premises, as well as the fact, for what purpose it will be used. For example, if the room is small, you can use a plastic manifold.
  • The last important parameter that should guide, is the cost of the product. It depends on the configuration of the unit. For example, if the distribution manifold includes a flow meter and have the ability to adjust, then such a device will be cheap enough. If you want to choose something a little more complicated, you can buy the device, which is installed in a group of mixers with five outputs. It is produced by different firms. But this group will have a relatively high cost.

In the photo collector group on 5 circuits with mixing unit

Manifold for underfloor heating with their own hands to build and install easy. One need only observe the connection diagram and some features of the work.

If you want to install underfloor heating manifold with his own hands, it is necessary to prepare for the work ahead. This distribution device should be in a special cabinet. Its installation is made inside or outside the walls.

Before you begin work, to be drawn scheme by which the connection will be made, only then comb set for underfloor heating.

Installation can only be performed after the pipes are already laid, and the collector cabinet is installed.

The collector should be positioned so that you do not feel any discomfort. In doing so, it is good access must be provided.

Assembly scheme depends on the number of system circuits. If two of them, then it may be: a two-way ball valve and arranged parallel to each other. They are connected with the control valve. Through the input hot water circulation pump installed and the water temperature sensor. Next there is a connection of the servomotor, which has diverted wires to install the switching unit, power supply and room thermostat. Thereafter the hot liquid is fed into the tube. Thus, a principle of the collector.

Further, this line is connected to the return collector, which receives the already cold water. After the ball valve is fed back to the heating system. This scheme is very simple.

Mount collector for underfloor heating with their own hands is not difficult. But you need to follow certain rules. Note that a self-made collector shall meet all the requirements of the underfloor heating system. Temperature control must be set up correctly as possible.

Driving such an apparatus with connection control valves may require embedding a sufficiently large amount of resources. However, the advantage of this system is the ability to control the water flow in each circuit.

Naturally, the installation should begin with the installation of shut-off valves, equipped with a thermometer. If you are not sure that the collector can collect yourself, it is best to buy a ready-made set of collector. Most often it is already staffed and can be directly connected to the heating system. Such a group can be expensive enough, though there are different models.

If you have purchased a ready-made kits that connect them is not difficult. First the installation of the product to the pipes supplying hot water and reverse. And further it is connected to the floor heating elements.

To lock all components of the apparatus used compressor fittings. Since the elements have different diameters, then their connections necessary adapters.

If you installed a comb for underfloor heating provides the principle of the collector, then everything is done correctly. Leave opinion about today's article in the comments, whether it was useful to you?

Connect underfloor heating manifold

System warm water floor - only operate smoothly and more effective alternative to traditional heating. Underfloor heating can also be used as a supplement to the usual way, for example, for one or more rooms. Its advantage is that the system always operates autonomously and the main heating circuit is independent. Such autonomy provides a collector for underfloor heating with their own hands, working as a multifunction device. What is multitasking collector "warm floor" system?

Manifold for floor heating system

First of all, we analyze the concept of "warm floor". This independent heating system, is connected to the main heating ring. That the connection has been most effective in places docking was no heat loss, use the collector connection (in some cases - a few collectors, if the system has several heating circuits). The most primitive collector for warm water floor - a segment of heat-conducting tubes, which are outlets for connection to other heating pipes.

Scheme simple collector

That is, the collector - a coolant pipe distribution circuit that directs and controls the hot water flows through the pipes in the house heating. Standard connection underfloor manifold include an inlet header connected to coolant return pipe or the feed (depending on the heating circuit), the output devices are connected to the floor heating pipe system.

Primitive collector system for heating is used very rarely, because the more complex and more efficient units, commercially available in a large range, it is possible to pick up for anyone, even the most complex heating scheme. Modern collector - a technology design with many elements that guide and regulate the flow of coolant. The adjustment is required due to the fact that the boiler heat carrier heats up to 70 0 C, and sometimes up to 95 0 C, which is unacceptable for a warm floor - it is impossible to walk on such surface, and not every floor will stand high temperatures. Therefore, the installation of underfloor heating manifold necessarily needed - device evenly distributed temperature coolant flows, align it, and will monitor the performance of the heating system. The effective functioning of the reservoir is provided by the following elements in its composition:

  1. Combs: flow and return;
  2. Valves: two- or three-way;
  3. Circulation pump;
  4. Flow meters, pressure gauges and thermostats.

Manifold heating circuit

The standard collector circuit of floor heating (. See figure) works as follows: the comb are connected to each other and to a common manifold block. The coolant supply and return pipes are mixed in a mixer with simultaneous alignment and adjustment of the hot water temperature. The illustrated circuit - not the only, and the final assembly of the collector circuit depends on the number of heating circuits and their purpose. In any scheme to be applied mixing valves that will mix feed and return line. Tank line (cooled heating medium) is fed into the heating circuit manifold, the coolant supply is derived from the boiler.

To a two- or three-way combs connects circulation pump for heating. The entire circuit operates as follows: after reaching the set room temperature from the sensor signal supplied to the valves, which overlap for a certain time in the coolant supply pipe and the pump is stopped. After cooling the coolant to a predetermined point all going in reverse order.

Three-way mixing valve

Monitoring and Configuring the underfloor heating manifold occur manually or automatically. For automatic operation of the control unit must be installed or the servo. The control device includes a supply valve - two- or three-way. From conventional feed valves differ valve possibility coolant flowing in one direction. Install the valve need special attention - if you put the valve in the opposite direction, it quickly breaks down.

The locking element of the supply valve - a steel ball or a rod. By turning the handle valve opening overlap occurs, and turning itself can be carried out manually or by means of actuators that are connected to temperature sensors.

two-way valve

Two-way mixing valve allows fluid into one direction by adjusting the amount of hot fluid. Adjustment takes place smoothly and slowly due to the low capacity of the device capabilities.

Thus, installation of two-way valve with the reservoir provides a constant and comfortable throughout the entire coolant temperature floor heating pipe, and the smoothness of the temperature control device is provided by low throughput capacity. Two-way valves are easy to install and replace, they are reliable and durable. Their only drawback - is not recommended for heating systems that are designed for high warm area (≥ 200 m 2).

Scheme collector with a three-way valve

Three-way feed valve has a more complex and versatile device that combines in one housing a bypass and a bypass valve capabilities. A three-way valve of the collector housing has one outlet and two inlets, and the adjustment of the coolant in the same way as in the two-way device - or a steel ball or a rod. this valve difference is that neither the ball nor stem completely cover the flow of the coolant, and the construction itself is designed for redistribution and mixing of the return and supply. To automatically adjust the temperature in the embedded servo valve operating signals from temperature sensors and controllers. Servo controlled stop valve design providing the desired degree of flow mixing.

Three-way valve with actuator

Three-way valves are installed in the supply header nodes for a large area heated premises - ≥ 200 m 2 as well as in multiple-heating systems.

Manifold for floor heating system

Underfloor heating often mount a common collector node, or before each heating circuit is set a separate collector. If it is the last option, all collectors are fitted with flow meters, thermostats, as well as the following elements:

  1. The mixing valve and the return flow;
  2. Stopcock balancing heater;
  3. Overflow valve.

Most collect collector for underfloor heating can be under different schemes, and in some schemes collector assemblies used bypasses, but not always - only in the single-loop systems. If a system of warm floors is organized in two-loop, the collector can be enabled without bypass in the secondary circuit.

Dual-circuit system with floor heating manifold

Before you assemble the collector unit for underfloor heating, weigh the opportunities - sometimes it's easier to buy a ready-made design. If the collector will be bought, it is best to all its parts and elements are from the same manufacturer. With self-assembly assembly is necessary to select the material of which will be collected in the main assembly constituents: copper, steel, brass or polymers.

Also, when choosing the industrial design is important to consider the following options:

  1. How the system is heating circuits (generally from 2 to 12), the total length of piping and bandwidth circuits;
  2. The maximum allowable pressure in the pipes;
  3. Expandable heating system;
  4. Manual or automatic control of the collector;
  5. Electrical power all components and assemblies;
  6. The diameter of the internal manifold holes (throughput).

Collector with his own hands

The most efficient operation can be collected by the collector node to provide connection to them of equal length heating zones. With sufficient accuracy to equalize the length of the pipelines, they are divided into equal segments, which are connected to the collector. The easiest way to calculate the manifold assembly in a special computer program or an online calculator that does not appear the phenomenon called "thermal zebra", ie, non-uniform heating of the floor.

The following information is required for the calculation:

  1. Type decorative flooring;
  2. area of ​​heated space and the deployment plan in it for large items;
  3. The material and diameter of the pipes circuit;
  4. The nominal output of the boiler;
  5. Type of floor insulation.

Important: when installing floor heating pipes to avoid pipe joints - is prohibited by existing regulations. It should be remembered that the flow resistance of the coolant is increased at every turn of the pipeline and by increasing its length.

calculation of the collector

Installation of the collector - Recommendations

When designing a floor heating system, first you need to find the optimal location for mounting the collector. The standard unit is installed in the collector cabinet, and the cabinet is mounted at a height of 30-40 cm from the floor next to the flow and return.

In order not to narekat own mistakes and to ensure maximum heating underfloor heating pipes, read the instructions for connecting the collector. Then collect the next node in sequence (this applies to industrial collector unit):

  1. Extract the tube for the forward and reverse flow of coolant. Tubes must be with flow and feed valves. If multiple-collector, collect section into a single structure;
  2. Collected from the sections to assemble a node on the brackets (are included);
  3. Next install stop valves, automation, sensors and other connecting fittings;
  4. Assembly mounted to the wall or in a cabinet, assemble the thermostat, the actuator and the circulating pump;
  5. We connect the pipe from the boiler and pipes of the heating circuits of the system "warm floors".

set header

Now connect the underfloor heating manifold circuit is pressurized, then it is possible to pour the concrete floor. Thermal collector settings can be carried out after installation finish.

Manifold assembly with his own hands

Serial header - the product quite expensive, so many masters want to do with her hands. Many elements still have to buy, but the cost will be cheaper. The easiest way to self-made collector weld PVC pipes and fittings Ø 25-32 mm. Also need the tees and elbows of the same diameter, and check valves.

Important: homemade manifold assembly has a lot of joints, so all the solder must be carefully checked, and not only during assembly, but also during operation of underfloor heating.

homemade collector

The number of valves and fittings are calculated according to the number of heating circuits. Of the tools needed for soldering elements of propylene and attachment to it, special scissors for cutting tubes and roulette.

Partitioning collector is marking and cutting the desired length pipes, maintaining a minimum distance between tees. For PVC tees soldered soldering iron gates and passages. By this construction soldered fittings for connecting the pump. As you can see, everything is simple, but the more complex the collector nodes is better to buy ready-made.

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