- 1 Driving underfloor heating manifold - how it should work
- 2 How to install collector for underfloor heating with their own hands
- 3 Collector group for underfloor heating: installation and management
Driving underfloor heating manifold - how it should work
Installing underfloor heating - a very costly affair, because will have to spend money, not only for the heating circuit, recessed into the floor, but also on additional equipment to ensure proper operation of the heating system. Such equipment are manifolds, pumps, valves and sensors. In this article, we'll show you how to build a collector for underfloor heating independently, thus saving money.
What is underfloor heating manifold
Collector - a set of parts allowing to control coolant: mix and distribute the liquid from the parallel heating rings. The large cross section and allow low speed to mix the hot heat transfer fluid is supplied from a boiler, warm and extending from the heating pipes, which allows to align the coolant temperature to the desired values.
To properly mix the return line (chilled water from loops in the floor) and hot water to the desired temperature at the various sensors installed system: water temperature sensor, heat sensor on the outside and the sensor measures the pressure within the system. Sensor information is fed to valves, which are mixed coolant. floor heating manifold assembly with a pump and a special sensor may monitor the pressure in the system.
To better understand the principle of work and the need for the system, pay attention to the following example: in the house connected to the boiler, floor heating, radiators and shower. Shower requires hot water at approximately 70 ° C, heating radiators require a coolant having a temperature of 75 ° C, and for heating the floor need only 50 ° C, to finish the flooring temperature did not exceed sanitary norms 30 ° C.
As you can see, is directly connected to the boiler all consumers of warm water does not, therefore, a reservoir for warm water floor, which will cool the water for the system, in addition to the normal operation of long loops need additional pressure, which provides pump. See also: "The optimal scheme of connection of floor heating - make the right choice."
For stable operation of the mixing unit you will need:
- Mixing valve, which will be discussed below;
- The pump, which allows to control the water pressure (see more: "How to choose a pump for warm water floor - the difference in the details");
- Shut-off and balancing valves;
- Sensors: pressure gauges with thermometer and thermostat;
- Accumulating in the air system hinders stable operation, so it must be vented to pit.
- You will need a variety of plumbing connectors: bends, fittings, etc.
In total there are two types of mixer valves that are installed in the manifold assembly for floor heating: two-way and three-way valve. They differ in the principle of its work, which should tell us more.
How does two-way valve:
- Thermostat with a temperature sensor measures the heating of the heat carrier flowing into contours;
- If the water temperature is higher than normal, the thermal head closes the valve to reduce the supply of hot water;
- If the temperature is lower than required, the valve is opened and the amount of hot water in the circuit increases.
As you can see, two-way valve operation is to control the supply of hot water, whereas there is a constant flow of return pipes. This valve has a low throughput that provides a smooth floor heating. If the room in which you plan to install floor heating is less than 200 square meters, you can feel free to use this mixing valve.
It should digress and give advice when connecting a mixing valve in the manifold for underfloor heating, it is necessary to install it via the detachable coupling, which will in the future is easy to replace, if the valve becomes defective.
Work three-way valve:
- Three-way valve at the same time balancing the return line and the hot water from the boiler inside through the bypass;
- Inside the valve is a special valve, installed perpendicular to the hot water pipe and a return pipe;
- The position of this valve varies, and that regulates the final temperature of the mixed fluid.
Such a valve is ideal for large heating systems, for example, where it is used several heating circuits. They are also recommended in the event that the collector for underfloor heating Group is able to automatically adjust the water temperature. System to work automatically installed on the valve actuators, controls the weather and temperature sensors.
Three-way valve has two drawbacks:
- floor temperature change occurs rather abruptly;
- Due to the high bandwidth it is quite difficult to regulate the temperature, because even a small change in the valve position can lead to severe changes in temperature. See also: "How is a mixer for underfloor heating and why we need it."
Whether it is necessary to automate the system
First of all it is necessary to talk about the weather sensors. They allow you to adjust the temperature of the coolant based on the temperature outside your home. You could do it yourself, but frost come unexpectedly, like when you sleep, so in the morning in the house can greatly cold, it is in these situations, weather sensors will not let you freeze.
Weather sensors often set indoor temperature sensors, which bias the valve portion to 1/20 when the temperature in the building than necessary.
After selecting all the parts for the heating system, you can begin to build. Set the mixer can be in the outer or inner cabinet, but remember that outdoor cabinets can only fit a system width of 16 cm.
Driving underfloor heating manifold is shown in the photo. Carefully read it and collect your system for this scheme.
Collector - a necessary thing for the arrangement of the heating system in the house, you can only scare the price, but the underfloor heating manifold connection to significantly reduce energy costs for heating water.
How to install collector for underfloor heating with their own hands
The need to install the collector cabinet
Wardrobe, wherein the collector is arranged for heating and floor heating, in a photograph, it is necessary to cover the heating element of this system. It is also the place where the dock of the heating pipes with the other details of construction for heating the premises. It also set the devices to adjust the heat supply and the functioning of a warm floor.
Some owners of private houses prefer to install collector for underfloor heating with their own hands. After a special cabinet ready, it infest feed and coolant return pipe. The first of them delivers the hot water in the boiler, and the second - collects the cooled coolant and returns it back to the place of the heating.
The collector element as a heating system
The valves must be connected to the collector. It is a pipe section having one side with several outputs. Log collector must be connected to the valve. With special fittings perform the connection to the collector of metal and plastic underfloor heating circuits the heating system.
In the distribution manifold with multiple branches to the opposite end of the tube has a yield. It is closed or normal plug or install a splitter - it has on the one side is the drain valve, and on the other - air vent, automatically removing randomly generated in the air system.
Appointment of collector and features of its installation
Construction for heating a house with the help of water the floor mounted separately from the whole heating system. Installation of floor heating manifold is required for installing insulation from the water supply and return pipe. The scope of this unit also includes a pumping unit (read also: "electric fireplace with his hands: Just about the complex").
Typically, underfloor heating manifold with their hands mounted in the wall space so that its location was equidistant from the endpoints of heat conductors. Due to this arrangement the connection of floor heating can be ensured an optimum operating mode for the heating system. In the case where the heat is necessary for a large number of rooms and outbuildings, it is desirable to foresee several distribution centers for heat transfer fluid (also read: "How to make pyrolysis boilers with their hands").
The constituent elements of the collecting group
Collector group for underfloor heating in its composition has:
- comb-lines, which are connected according to the "TTT" tees;
- a mixing unit with a three-way valve;
- supply manifold with adjusting the water flow valves on the branches;
- return manifold - adjusting operating in automatic mode, the servo valve;
- a circulation pump having a drainage device;
- Flowmeter for underfloor heating manifold;
- device for adjusting the water underfloor heating and automation process.
Sometimes collector group may contain combs designed for radiator heating system if necessary.
As provides floor heating circuit connecting the manifold, the hot heat transfer fluid enters the assembly to mix with the water heating system, wherein the flow and return water are mixed to provide a heating mode (read as: "heating circuit with warm floors, from simple to complex").
Valves mounted on combs, is responsible for supplying the heat source to the individual circuits mounted system and simultaneously controls the design water floor heating. When reaching a certain (predetermined) temperature in the room, the automatic valve block access of the liquid coolant in the heating circuit. Manifold for underfloor heating with flowmeter provides economical energy consumption.
In addition, comb-lines need to complement specific illustrative and measuring devices such as manometers - thermometers, pulse devices associated with the sensors in the heating screed.
Correctly installed collector unit for water floor heating system should be given special attention - from his work depends on how warm and comfortable will be in the house (read: "How to make the water warm floor with their hands"). Before connect the underfloor heating manifold, it is necessary to perform a detailed diagram of the location of all the elements that provide heating and carry out installation in accordance with the plan. Otherwise, the elimination of the defects will cost a significant amount.
Collector group for underfloor heating: installation and management
Efficient operation of the floor heating system is provided by a balanced and reliable collector group. This distribution block, which delimits the coolant supply circuits for the heating pipe branches. These nodes may have different configurations and specifications, and in some embodiments also perform auxiliary functions. Qualitatively mounted collector group for underfloor heating allow to achieve not only to optimize the water supply, but also significant savings in energy resources.
What is a collector group?
The design distribution group is formed by two ridges plumbing, in which check valves are arranged. In the simplest models such blocks are formed flow and return headers with holes for controlling coolants. Mechanized construction of equipment of flywheels with handles to adjust. More sophisticated modern versions also allow the possibility of automatic control of water supply and drain. Extended equipment assumes that the collector group for underfloor assembly may be equipped with thermometer stopcocks, end nodes and metal brackets. Additional functionality is usually represented flowmeters are integrated into the contours.
The upper limit of the working temperature is a distinctive indicator collectors designed to operate in a floor heating system. Thus, as compared with radiator valves such constructions operate with coolants at 40-50 ° C. When this flow adjustment may vary from 0.5 to 6 L / min in average. An important characteristic is the pressure at which the collector functioning group for floor heating. The pump can adjust this value in the range 6-10 bar. With regard to the manufacture of materials, the metal substrate is made of stainless steel and fitting elements - most often made of brass. Also in constructions may provide plastic components shown polypropylene. By the way, from the same material are performed and the heating circuits of floor heating.
Practiced by the use of vertical and horizontal schemes, which organized the supply of coolant circuits. The simplest configuration is to use a single pipe system vertical layout - respectively, and the collector require a minimum configuration. But such designs have many disadvantages, including possible violations in the heat distribution and the low accuracy of the adjustment of the original temperature. Pipe system includes a full-length collector group for floor heating, are arranged separately from the central heating. Among the disadvantages of such structures there is a high consumption of water and the complexity of the assembly operations.
Installing underfloor heating system begins with the installation of the collector of the cabinet, which then placed the whole distribution accessories. Module Placing sold already assembled, and then to its nodes connected circuits. Compound of individual components is carried out in different ways depending on the type of the collector. For example, the discharge pipes can be provided with special thread or weld output. At the output nozzles can be already preset adjustment and control elements, including valves, taps, valves and so tuning. D.
circuit fabrication materials also affect the technology on which is mounted a collector group for underfloor heating. The hands can be realized and the transitional point from outputs of polypropylene to metal if necessary. Screwed connection in this case is carried out combined with attached fittings fixtures. Alternatively serves tee and polypropylene, which also provide the distribution ducts. After the completion of the technical operations necessary to check availability of the system. A trial run is carried out under elevated pressure indicator. Relative to a standard level of pressure should be increased by 20-25%. This allows you to check connections for leaks, identify defects and design defects.
Manifold blocks initially supplied with a closed adjustment system. Open valves can be removably via thermowell, together with this it is necessary to rotate the flowmeter for adjusting nut against the stop. In this case, use the wrenches is not recommended, as there is risk of shifting and fixing thread device. To set the desired flow rate is necessary to lower the volume of the flow. As this action is to rotate and flow meter. When the optimum value is reached, the valve sleeve can be worn again. Balancing and tuning of each circuit should be carried out periodically in accordance with the manufacturer's recommendations. Regular preventive measures depends on the equipment, which comes radiant floor heating. Manifold group also clogged at joints and connections after a certain time of operation. Therefore it is necessary to clean and wash these areas.
Recommendations for the use of flow meters
Correct operation of the flowmeter is only possible if the optimum settings coolant supply circuits in accordance with user needs. Unused valves should be tightly closed. Cap from the meter, it is desirable to keep 5-7 mm below the normal closed position. Also note that collector group for underfloor heating can be supplemented with other measuring devices. Their integration can make adjustments to the flow rate, so you should make allowances on non-target coolant flow rate.
To the leaders in the market for plumbing heating systems include the company Valtec and Comisa. These manufacturers produce high-quality collectors in the collection, complemented by all necessary accessories. In particular, the collector group for underfloor heating Valtec in the latest versions provides for EPDM-rings that eliminate the need for sealants in the joints. Budget decisions and offer IPS TIM firm. This functional and reliable units, which are also suitable for the majority of underfloor heating systems.
Against the background of the spread of automated parameter control systems engineering equipment of collecting mechanic may seem outdated. Even the electric floor heating has a huge advantage in this regard. On the other hand, the collector group for underfloor heating differ in their advantages in the form of thrift and the lack of the need for an electrical wiring. The advantages include the control of the collector and a high degree of reliability. Manufacturers combs and sanitary fittings are constantly improving the coupling mechanism that provides not only durability, but also the rational flow of coolant.