Collector warm floor with their 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.

Homemade collector for underfloor heating

Popular lately heating of buildings with the use of underfloor heating requires attention in the design, selection of components and devices. increasing the number of components and products, than for a system with radiators is required for manufacturing. This is due to many factors, but the main is the need for a competent distribution of the coolant through the branches and the control of its heating.

One of the nodes is required manifold (comb) which are connected to pipes extending in the floor. It performs several functions and without floor heating device is problematic. Despite the fact that the collector group for underfloor heating is made by many manufacturers and is marketed in many modifications, often a desire to save and create it yourself.

How is this process, from which it can self-assemble manifold and what materials are used for this purpose? Let's try to answer these questions.

Collector in-floor heating system.

Appointment collector underfloor heating

Manifold for underfloor heating systems used for such purposes:

Its main purpose is to feed the coolant temperature and the amount required in each branch of floor heating. For this complete set mixing with the collector assembly comprising a pump, control valves and the bypass (in some embodiments).

the need for temperature control due to the fact that the boilers are mainly prepared by the water temperature is much higher than that required for the underfloor heating. And in order to translate it into parameters required water is mixed with a "return line" to achieve the desired temperature.

The collector node in the mixer.

Further material and Performance collectors different in the type of regulation. They are both even without regulation, so using a flow meter, the manual shut-off valves and automatic devices.

Manifold for underfloor heating without a regulation to create a cheaper version of the distribution system. It does not use any regulating devices, and coolant streams are allocated depending on the characteristics of the hydraulic system. Despite the cost of such an option should not be used, since it is not convenient to use and can create difficulties in the future.

Set this option collector tend mostly those who are trying to save on hardware. It's not always a bad thing. Savings can direct the funds to a place where they are needed. What are the pros and cons of this option?

Collector with manual regulation of the right to life and can fulfill its function in the maintenance of the required amount of coolant in each branch. In this case, the coolant temperature is controlled in the mixing node, and its amount for each loop is set manually adjusting a time. Next, the system works independently. Well-proven brass collectors of this type.

Such variant is particularly relevant when floor heating device as an additional element in the room heating system. When the main heating is carried radiators, or other devices, and underfloor heating only create additional comfort. For the main heating system in the form of a warm floor is better to provide more serious automation.

One option for the regulation of the coolant flow to each branch extending from the collector is the use of balancing the flow meter. This element makes it possible to regulate the flow of coolant and visually monitor it.

The apparatus consists of rod flange, which allows to control conditional passage in the pipeline. It consists of a window with the calibration, by which you can visually identify a particular coolant flow through the branch observed. Adjustment is carried out adjusting ring under the cap. Connecting his header it is held by a thread.

Manifold with flowmeters are often used in current systems due to its low cost and good performance.

In recent years, often installed underfloor heating, which is established collectors with automatic regulation. For this purpose, the servos on each hinge. They are combined with the warm water temperature sensors floor allow you to adjust the coolant flow in each branch in the dependence of the temperature sensor readings.

Collector with actuators.

To do this, set the desired section of the passage. These systems are more expensive than the versions without regulation or with a manual, but rather flexible and give a comfortable living conditions. Do not forget that the automatic systems require competent regulation, without which they will not show its full functionality.

From what we can collector

Provided on the market standard collectors for underfloor heating are made of different materials: it and polypropylene, and steel, and various alloys. The most widely used metal elements because of its quality, durability and reliability.

Issued individual combs with different number of taps of the polypropylene that can be assembled with each other and create reservoirs of different sizes. The same applies to the brass elements.

If there is a problem for the collector installation of floor heating elements are not from the factory, you can use pieces of pipes, bends and other elements of district heating network. Suitable steel pipes of large diameter, in which nipples bump for connecting pipelines. There are also options for using polypropylene tees that are interconnected using cuttings pipes. This action turns comb the right size and characteristics.

The collector of polypropylene.

Making collector with his own hands

If you decide to collect a self-made manifold for underfloor heating, you should have some experience and understanding of the design of heating systems. The first step is necessarily acquainted with the principle of the collectors and the problem then hold competent calculation and manufacture directly.

Scheme underfloor collector is selected based on the characteristics of the particular system. The first step is to calculate and choose the section of pipeline. Before the production, it is necessary:

  • According to a predetermined scheme to determine which of the branches will be floor heating system and their characteristics.
  • Calculate all parameters of the system: the hot water temperature which is applied to the collector, the flow of coolant through all branches of floor heating, the location areas.
  • It is important to ascertain the presence and number of other heating devices, except those that are connected to the distribution manifold.
  • Choose a system of regulation and control, which will be used in the distribution manifold.
  • It is necessary to define the collector's location, as it affects their design and location of the outlet unions. Doing this point allows for connection of floor heating manifold is optimal.

To create a good distribution manifold, which will intelligently control the underfloor heating in the house, it is important to pay special attention to the selection of components and parts. They should be designed to operate in such systems.

To selected manifold qualitatively fulfill its function, and does not create additional hydraulic resistance to flow and noise, should be guided in the selection of such a rule: diameter distribution manifold must be chosen so that its sectional area is equal to or more than the sectional area of ​​all conduits that connected to the device. The same applies to a collection manifold.

That is, for example, if the collector pipe 4 are connected internal diameter d = 20 mm, the cross-sectional area of ​​the collector must be: S = 4 (πd² / 4) = 1256 mm². That is, the diameter of the pipe to the collector is not less than 40 mm. This rule for the heating network equipment described in particular in such regulations: stations of RAO UES of Russia "Substations thermal networks".

When selecting a set within the collector elements need to focus on these products:

  1. The comb, which is a piece of tubing with no embedded in it to connect the taps of underfloor piping. They can be purchased separately from the weld metal or solder polypropylene elements. For the collector who is standing on the pitch necessary to have a control valve on each circuit.
  2. Air vent which connects the upper portion of the article to reset the assembled air system.
  3. Brackets that allow qualitatively to hold the installation of underfloor heating manifold to the building structure. They can choose between standard or made independently.
  4. The drain valve, through which is possible to carry out the removal of coolant from the system.
  5. T-joints and connecting elements.
  6. Fittings for connecting metal-plastic or plastic piping hot sex.

Accessories for the collector.

This is a standard set of items for collectors of different materials.

Directly manifold assembly for floor heating except the collector includes a large number of additional elements that allow you to manage and monitor the system. It includes a three-way or two-way valve, pumps, valves and control valves. Wiring embodiments, each collector depends on the type of equipment.

Needless to manufacture the collector is no different from working with the heating elements of the network. If you are using polypropylene, all components are soldered in compliance with the tightness connected valves and other elements. It is necessary to monitor the location of the pipes to make it convenient to connect.

When installing the manifold for underfloor heating pipes made of steel must have skill in welding. To work is taken steel pipe of large diameter round or square section. Because the pipe sections are cut to pieces of desired length manifold. Sections of pipe are welded on both sides with respect of tightness, and then welded thereto round steel pipes, which pipes can be connected. To install metering and regulation in the nozzles should be prepared seats for the venting device and other components. To prevent corrosion, a collector needs painting.

Before assembly, it is important to evaluate all the risks and potential savings, then get to work. Should not be regarded as an independent system collector: it is an important part of the mixing unit, and if the idea to build it yourself, you should pay attention to the possibility of self-production of the entire assembly. To do this, it is important to correctly pick all components, three-way valves, pump and Valves. Need to comply with all requirements of the heating equipment installation.

Collector for floor heating with his own hands: assembly and connection

Warm floors have long been a feature of buildings of high standards.

Their use high quality caused by heating - the space around the warmed volume due to natural convection, as the entire floor area serves as the heater for the room air.

wherein the floor itself is heated by electric, film or old good water heater - hot water boiler.

A house or apartment have a few rooms, and in each of them on the floor are placed the thermal circuit.

To a coolant line it is connected through an input-output unit in the form of two tubes.

The need for thermal energy in each of the circuits usually different: in different rooms the temperature can vary. On the other hand, the floor space is not the same, and hence the volume of coolant for each room is different, too.

Thus, between the boiler and heating circuits must be installed with the control valve functions. Such a device is called a collector. According to its functionality is mixing unit. His task - to ensure the water supply to the contours.

Usually, the collector pipe has a connecting nodes - the number of heating circuits.

Total collector contains two tubes:

  • one acts as a mixer and a coolant flow in circuits;
  • the other serves to collect the return of all the contours and return cooled in water circuits in a boiler, and partly through a two- or three-way valve in the mixer output.

The addition of hot water from the boiler occurs mixer turning thermostatic valve, which is placed on the path of the water supply to the mixer. By reducing the temperature in the mixer is less than the allowable (we remember - is 40 ° C) portion of the valve delivers hot water.

This group of bimetallic valve changes the flow cross-section, and the amount of water flowing. This allows you to set the temperature as desired. At the inputs of the return flow sensors are mounted, and a comb is provided with the return air vent also. Pumping coolant through the system operates a water pump, which creates the necessary line pressure.

A complete set of collector parts also contains a variety of sanitary fittings. In a set of devices for warm water floor manifold, perhaps the most important one, as it provides:

  • safety and correct operation of the sexes;
  • ability to customize the comfort to use thermal devices.

The collector has a significant drawback - the high cost.

Therefore, many "diy" collect their own hands a variety of options for collectors, in accordance with her purse and the availability of components.

There are two variants of this way:

  1. Collect collector of purchased components, using the fact that almost all of them are for sale. This can be economical, but the quality of the used products is poor.
  2. Replace certain items collector tube of polypropylene. Here, the expected savings can be up to 40%, but the aesthetics of the finished device, and reliability, to put it mildly, not very ...

Scheme collector 3 loops may be implemented as follows:

  1. First, you must gather the tube collector - and the return of coolant, heat supply circuits. For this purpose, one comb on channel 3 or 3 odnopetelnyh node to each manifold.
  2. The return manifold is equipped with a sensor or flow meter and a set of counter node connecting the return hose for supplying each loop. One-loop collectors connected threaded elements in a comb. Each teplodatchik coolant loop comprising an actuator and a connection node line thermal loop power.
  3. To one end of the air vent collectors connected, on the other - is connected to the collector pipes pump pumping heat medium, and further connected to this point the thermostatic valve or actuator, which is time by time the hot water faucet.
  4. The collector assembly to the wall, checked for serviceability and is connected to the heating circuit. After that the final installation and configuration of the entire system.

Here is the simplest version of the operating collector for underfloor heating is available a wide range of DIY artists. Maybe the real collectors often extend connecting more complex system of regulation and accounting.

For example, connect the heat meters, temperature gauges and further more, someone in that much - in fact, and there are of DIY inventors to anything "to gather."

If homemade collector is welded together from polypropylene pipes, it is necessary to replenish the arsenal of special soldering tools for welding parts of this polymer.

During assembly welding method odnopetelnogo size of each node is increased by the joints, and if the thermal loops is greater than 3, the entire collector becomes bulky and its installation becomes problematical. In the rest of the plastic collector circuit and its setting is not different from that described previously.

Watch the video, in which an experienced user explains the nuances of the collector assembly for floor heating with his own hands:

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