Description kit temperature control Rehau fixed G1 (1")
Rehau temperature control kit with constant parameters G1 (1") ErP suitable for mounting on a Rehau HKV-D manifold. Designed for connecting circuits floor heating to the system radiator heating.
Includes:
thermostatic valve Rp 1/2 with thermostatic head and immersion sensor: setting range 20-50 °C
return connection r R/Rp 1/2
energy efficient pump with immersion sensor for temperature limitation
connecting elbow with air vent and thermometer
tap KFE 1/2" for filling and draining the system
included parts 1/2" for mains connection
Individual parts are assembled with seals and tested.
In the Torus online market you can buyRehau fixed temperature control kit 1"with delivery to any point of Ukraine and receive an official guarantee from the manufacturer.
Delivery in Kyiv
Delivery of goods in Kyiv is free of charge (to the entrance) when ordering more than 4000 UAH. If the order amount is less than 4000 UAH - the cost of delivery is 80 UAH.
The delivery service in Kyiv works from Monday to Friday from 10:00 to 19:00, other delivery times are negotiated individually with your manager.
Buyers of our online market also have the opportunity to pick up the goods themselves at the company's office (04073, Kyiv, Syretskaya St., 9, business center "MAYAK", office 203) from Monday to Friday from 10:00 to 18:00.
Please note that, unfortunately, we cannot place the entire range of goods in the office, please coordinate your visit and pre-reserve the goods with the manager.
Delivery in Ukraine
Delivery of goods is carried out almost anywhere in Ukraine transport company"Nova Poshta" (You can see the list and addresses of branches here...). The goods will be shipped after the full payment has been made.
For prompt delivery and ease of payment in our Torus online market, you can use the "Return Delivery" (Cash on Delivery) service and pay for the goods upon receipt in your locality in the shortest possible time. Upon receipt of the order, you will be able to check the appearance and completeness of the goods.
The cost of delivery in Ukraine is paid by the recipient. (You can calculate the preliminary cost of delivery →)
Cash
Produced only in national currency. You can make payment immediately after delivery of the ordered goods by our forwarder or make payment when placing an order in our office.
Cashless payments
Payment by non-cash payment carried out in the following way: after placing an order, the manager of our company by fax or email will send you an invoice, which you can pay at the cash desk of a branch of any bank or from the current account of your organization. For legal entities package of all required documents provided with the product.
Payment for goods upon receipt of the order(C.O.D)
For your convenience, in the Torus online market, you can use the "Return Delivery" (Cash on Delivery) service and pay for the goods upon receipt in your locality in the maximum short time. Upon receipt of the order, you will be able to check the appearance and completeness of the goods.
The cost of the "Return Delivery" service is 2% of the order amount.
Underfloor heating rehau (rehau) are one of the leaders among similar heating systems. If you choose and install the right option correctly, you can ensure a comfortable atmosphere in the rooms and not think about heating the room for a long time.
Additional equipment for underfloor heating Rehau
underfloor heating will make the kitchen more comfortable
Included with the basic materials for installing a warm floor are additional elements that are used during the installation of the structure.
Tires RAUFIX
Underfloor heating installation:
Care and operating rules
Caring for a warm floor is not too laborious, but since the entire system is located in depth.
After proper styling floor heating and installation of flooring, you must wait a while, and then you can safely walk on the floor, install even rather heavy household items on it, since Rehau systems are reliable and high rate hardness. You can read about materials for warm water floors.
Choose the right flooring
The possibility of damage to the structure of the heating system should be avoided, carefully operated separately standing elements such as control units and other important equipment. If possible, children should be excluded from access to devices used to control and manage the supply of water and its heating in order to avoid sudden temperature fluctuations.
Maintenance should be carried out as needed and timely repair designs. Usually these actions are carried out by a competent master. Care warm floors Rehau is not important. The floor covering must be kept clean and in good condition. The entire system is buried in the floor, so the most important action required of users is to exercise care during operation. We also recommend that you familiarize yourself with the technology of installation, laying and installation of a warm water floor.
Pros and cons warm floors watch the video:
It is one of the leaders in the market of similar systems, as it differs not only in outstanding operational characteristics and ease of use, but is also quite economical, as it does not leave waste during installation and practically does not require repair. If you install it correctly, you can enjoy comfortable and reliable heating for a long time.
The heating system of the house, working on the principle of heating the floor surface, in our time is already difficult to surprise anyone. More and more owners of suburban housing, if they have not yet switched, are seriously considering the prospects for switching to this efficient and comfortable scheme for transferring heat from boiler equipment to the premises. One option is the organization of water "warm floors". Despite the considerable complexity of their installation, they are very popular because of the cost-effectiveness of operation, and for the reason of compatibility with an existing water heating system, of course, after certain modifications of the latter.
In general, to venture independent creation water "warm floors", having no experience in plumbing and civil works- hardly worth it. Every nuance is important here - from the choice of pipes and their layout, from the correct thermal insulation of the floor surface and pouring the screed - to the installation of the hydraulic part, followed by fine-tuning of the system. But this is how a typical Russian house owner works: he wants to try everything himself. And if the "hand is full", then many try to carry out such work on their own. To help them - this publication, which will consider one of the most important nodes such a system. So, what is it for, how is it arranged and is it possible to make a mixing unit for a warm floor with your own hands at home.
What role does the mixing unit play in the "warm floor" system?
The traditional heating system, which involves the installation of heat exchange devices in rooms (radiators or convectors), refers to high-temperature ones. It is under it that the vast majority of boilers of any type are designed. The average temperature in the supply pipes in such systems is maintained at about 75 degrees, and often even higher.
But such temperatures - for a number of reasons are absolutely unacceptable for the contours of the "warm floor".
- Firstly, it is completely uncomfortable to walk on a surface that is too hot and burns your feet. For optimal perception, temperatures in the range of 25 ÷ 30 degrees are usually sufficient.
- Secondly, not a single one "likes" strong heating. flooring, and some of them simply quickly fail, lose their appearance, begin to either swell, or give cracks and cracks.
- Thirdly, high temperatures have a negative effect on the screed.
- Fourthly, the pipes of embedded circuits also have their own temperature limit, and taking into account their rigid fixation in the concrete layer, the impossibility of thermal expansion, critical stresses are created in the pipe walls, leading to a quick failure.
- And fifthly, taking into account the area of the heated surface involved in heat transfer, high temperatures to create an optimal microclimate in the room are completely unnecessary.
How to achieve such a "parity" of coolant temperatures in the system. There are, of course, modern heating boilers designed to work, including with "warm floors", that is, capable of maintaining the temperature in the supply pipe at 35-40 degrees. But then what about the fact that the house has both radiators and floor heating - to organize two systems? Absolutely not profitable, difficult, cumbersome, hard to manage. In addition, such boilers are still quite expensive.
It is wiser to get by with existing equipment, simply by adding necessary changes in the layout of the contours. Optimal solution- mix the hot coolant with the cooled one, which has already given off heat to the premises in order to reach the required temperature level.
By and large, this is no different from the process that we do many times a day, opening water faucet, and by rotating the "lambs" or moving the lever we achieve optimal temperature water for taking water procedures, washing dishes and other needs.
It is clear that the mixing unit itself is much more complicated than a conventional faucet. Its design must ensure a stable, balanced circulation of the coolant in the underfloor heating circuits, the correct selection the right amount liquid from the supply and return pipes, the necessary “loopback” of the flow (when there is no need for heat inflow from the boiler), simple and understandable visual control of the system parameters. Ideally, the mixing unit itself, without human intervention, should respond to changes in the initial parameters and make the necessary adjustments to maintain a stable heating level.
This whole set of requirements, at first glance, seems very complex, difficult to understand and even more so to implement independently. Therefore, many potential owners turn their attention to turnkey solutions- complete mixing units sold in stores. Appearance such products, indeed, inspire respect with their "tricks", however, the price quite often just scares.
But if you delve into the very principle of operation of the mixing unit, understand where, how and due to what the mixing process takes place, if you clearly imagine the direction of the coolant flows in it, then the picture becomes clearer. But in the end it turns out that assembling such a unit, acquiring the necessary parts and using your skill in installing plumbing products, is quite a feasible task.
Let's make a reservation right away - in the future we will talk mainly about the mixing unit. It is further connected to the "warm floor" collector, about which, of course, certain mentions are simply inevitable. But the collector itself, that is, its device, principle of operation, installation, balancing, is a topic for a separate publication, which will definitely appear on the pages of our portal.
The main schemes of mixing units for "warm floor"
There are a considerable number of schemes for mixing units for water "warm floors", differing in complexity, layout, saturation with control devices and automatic control, dimensions and other features. It is difficult to consider all of them, and there is no need. Let us pay attention to those of them that are simple and understandable, do not require complex elements, and the assembly of which can be carried out by anyone with any knowledge of plumbing installation.
In all the diagrams below, pipes of a common heating circuit. The red arrow shows the input from the supply line, the blue one - the output to the "return" pipe.
On the right side - connections of the pumping and mixing unit with "combs", that is, with a collector of a warm floor, also indicated by red and blue arrows. It should be understood that the "combs" of the collector can be attached directly to the node or be taken out a certain distance and connected by piping - it all depends on specific conditions systems. Often the circumstances are such that the mixing unit is located in the area of \u200b\u200bthe boiler room, and the collector has already been moved into the room, to the place from which it is most convenient to lay out the contours of the “warm floor”. This does not change the essence of the operation of the pumping and mixing unit.
Translucent arrows of red and shades of blue directions of movement of coolant flows are shown.
Scheme 1 - with a two-way thermal valve and a series connection of a circulation pump
One of the simplest mixing unit schemes to perform. For starters, let's look at the picture.
Understanding accessories:
- Pos. 1 - these are shut-off Ball Valves. Their task is only to completely shut off the pumping and mixing unit if necessary, for example, when floor heating is not necessary, or when certain repair and maintenance work is required.
No special requirements other than High Quality products are not presented for cranes. They only play the role stop valves, and do not take any part in adjusting the operation of the heating system. In principle, only two positions should be used on them - fully open or fully closed.
Cranes pos. 1.1 and 1.4, cutting off the entire underfloor heating system from the general heating circuit, are mandatory. Cranes pos. 1.2 and 1.3 - can be placed between the mixing unit and the collector at the discretion of the master, but they will never interfere. It becomes possible to cut off the collector unit for carrying out any work without covering the actual contours of the warm floor, that is, without knocking down the adjusted settings of each of them.
- Pos. 2 - filter coarse cleaning(the so-called "oblique" filter). It probably cannot be called an absolutely obligatory element of the mixing unit, but it is inexpensive, and it can affect the durability of the system.
It is clear that such filtering devices are placed in without fail in the common boiler room. However, when the coolant circulates in a branched system, it cannot be excluded that solid inclusions will enter it and transfer, for example, from heating radiators. And the pumping and mixing unit and the manifold unit following it are saturated with adjusting elements, for which solid impurities are extremely undesirable, since they can destabilize the operation of valve devices. This means that it would be wiser to supplement your mixing circuit with an individual filter.
- Pos. 3 - thermometers. These devices help to carry out visual control over the operation of the mixing unit, which is especially important when debugging and balancing the "warm floor" system. In all subsequent diagrams, three thermometers will be shown - on the supply pipe from the common circuit (pos. 3.1), at the inlet to the collector, that is, showing the temperature of the flow after mixing (pos. 3.2), and on the "return" after the collector, before the branch from it to the mixing unit (pos. 3.3). This is probably optimal location, clearly showing both the quality of mixing and the degree of heat transfer of the “warm floor”. Ideally, the difference in readings on the supply and return manifold of the collector should not be higher than 5 ÷ 10 degrees. However, some masters manage with fewer thermometers.
Thermometer designs may vary. Someone prefers overhead models that do not require insertion into the system (in the illustration - on the left). But more accurate readings, and simply their reliability, still have devices with a probe sensor, which is screwed into the corresponding socket of the tee.
- Pos. 4 - two-way thermal valve. This is exactly the same element as is installed on heating radiators. It is he who will quantitatively regulate the flow of the hot coolant entering the "warm floor" system in this scheme.
There is one caveat here - such thermal valves differ in purpose - for single-pipe or two-pipe systems heating. But this difference is important when installing them on a separate radiator. But for a mixing unit that serves several "warm floor" circuits, increased productivity is important. This means that a valve for one-pipe systems should be selected, even if the entire system is organized according to the two-pipe principle. These valves are even visually more voluminous in size, they are usually marked with the letter "G" and are distinguished by a gray protective cap.
- Pos. 5 - thermal head with a remote attached sensor (pos. 6). This device is put on (screwed or fixed with a special adapter) on the thermal valve and directly controls its operation. Depending on the temperature readings on the remote sensor, which is connected to the head with a capillary tube, the valve will change position, slightly opening or completely blocking the passage for the hot coolant.
Thermal head prices
Thermal head
Immediately the question is - where to install the temperature sensor? There are two options - it can be applied to the supply pipe to the collector, after the mixing unit, behind the pump, or - to the collector return pipe, before it branches for mixing. There are adherents of both methods.
- In the first case, a constant temperature of the coolant supply to the underfloor heating circuits is ensured. Stability of work is provided, the probability of an overheat of a floor is reduced practically to zero. But, at the same time, the system, if it is not additionally equipped with thermostatic elements directly on the contours, stops responding to changes external conditions. That is, a change in the temperature in the room will not affect the level of heating of the coolant supplied to the “warm floor”.
You may be interested in information about do-it-yourself
- In the second case, with a temperature sensor on the return, temperature stability is ensured in this particular area. That is, the level of heating of the coolant leaving the collector after the mixing unit may fluctuate. Such a scheme is good in that the system responds, for example, to a cold snap, automatically raising the temperature in the supply, and lowering it when it warms up. Convenient, but there are certain risks. So, during the initial heating of the floor screed, too hot coolant may initially go into the circuits. A similar situation is quite likely with a sharp influx of cold, for example, when wide open open windows in case of emergency ventilation of the room.
Changing the position of the overhead temperature sensor is not so difficult if you foresee places for its installation in advance. So you can try both options, then choosing the best one.
We will not talk about the device of the thermal valve and the thermostatic head - there is a separate publication on this topic.
How is the system of thermostatic regulation of heating radiators arranged?
Installing additional devices allows you to provide permanent comfortable conditions indoors, regardless of changes in external conditions. Appointment, device, installation and operation - in a special article of our portal.
- Pos. 7 - ordinary plumbing tees, between which a kind of bypass is laid - a jumper, through which the coolant will be taken from the "return" for mixing with a hot stream. In fact, the 7.1 tee becomes the main mixing zone.
- Pos. 8 - balancing valve. It is used when fine tuning system, in order to achieve optimal readings of the circulation pump in terms of pressure and performance. It may be necessary to reduce (or, as plumbers often say, "choke") the flow through the jumper from the return so that unnecessary areas of excessive vacuum or high blood pressure and the pump itself would work optimally.
There are no tricks in this device - in fact, this is an ordinary valve that restricted the flow. Here you can put an ordinary plumbing valve. The block crane shown in the illustration is more profitable from the standpoint that it is compact, and also because no one can accidentally knock down the settings made with a hex key, for example, children who just want to turn the flywheel out of curiosity. So it’s better, after setting up the system, to close the adjusting unit with a lid - and be relatively calm.
- Pos. 9 - circulation pump. The pump that serves the entire heating system as a whole will not be able to circulate through the long circuits of the "warm floor", especially if several of them are connected to the collector. So each mixing unit is equipped with its own device.
Setting up an underfloor heating system will be easier if the circulation pump has several switchable operating modes.
Prices for the circulation pump
circulation pump
How to choose the right circulation pump?
The variety of models at present is extremely large, which can even confuse an inexperienced consumer. More information about the device and, about the rules for their selection and installation - in a special publication of our portal.
- Pos. ten - check valve. A very simple and inexpensive plumbing fixture that prevents unauthorized flow of coolant in the opposite direction
It could seem. That there is no special need for its installation. However, such insurance may not be superfluous. For example, the situation when the thermal valve, due to sufficient temperature on the collector, is completely closed. The circulation pump is working, and, in principle, is able to suck the coolant from common pipe"returns" of the system. And there the temperatures are completely different, much higher than even at the “warm floor” supply. That is, such a reverse current can greatly disorient the operation of the mixing unit.
With elements and from mutual arrangement- all. Let's see how such a node works.
The coolant flow from the common supply pipe bypasses the "oblique" filter and thermometer, and reaches the thermostatic valve. Here it decreases due to a decrease in the lumen of the channel for the free passage of fluid. The thermal head sensitively monitors the dynamics of temperature changes by slightly opening or closing the valve device.
The circulation pump operating in the "warm floor" circuit leaves behind a rarefaction zone, which "draws" the regulated flow of hot coolant. But since the pump performance does not change at the same time, the “shortage” is compensated by the flow of cooled coolant from the return line coming from the collector through the bypass jumper.
You may be interested in information on how to equip
At the connection point of the flows (in the upper tee), their mixing begins, and the pump pumps over the coolant already brought to the desired temperature. If the temperature on the thermal head sensor is sufficient or excessive, then the thermal valve will be completely closed, and the pump will start to drive water only along the “warm floor” circuits, without external replenishment, until it cools down. As soon as the temperature drops below the set value, the thermal valve will slightly open the passage to the hot coolant in order to reach the required value after the mixing point.
With stable operation of the system, brought to the design power, the flow of hot coolant from the general supply is usually not so large. The valve is for the most part in a slightly open state, but very sensitively reacting to changes in external conditions, ensuring temperature stability in the "warm floor" circuits.
A similar principle, in which the entire volume of coolant pumped by the circulation pump is sent to the "warm floor" collector, is called a mixing unit with a series connection of the pump.
Scheme 2 - with a three-way thermal valve and a series connection of a circulation pump
This scheme is very similar to the previous one, however, it also has its own differences.
The main difference is the use of not a two-way, but a three-way thermal valve (pos. 11) with the same thermostatic head. He took the place of the tee at the point of intersection of the supply line and the bypass-column pipe.
Mixing in this case takes place directly in the body of the thermal valve. It is designed in such a way that when one channel of coolant supply is covered, the second one is opened at the same time, which ensures greater stability of the mixing unit operation - the total flow rate is always maintained at the same level. This makes it possible to do without balancing valve bypass.
Important - three-way thermal valves are of mixing and dividing principle of operation. In this case, it is necessary to mix, with perpendicular directions of flow. Usually, the corresponding arrows are placed on the body of the device, and it is difficult to make a mistake with this.
The three-way valve can also be without a thermal head - with its own built-in temperature sensor and exposure scale required temperature at the exit. Some masters prefer just such a thermostatic variety, as it is easier to install. Indeed, the device remote sensor still works more accurately. In addition, when operating a system with a thermostatic three-way valve, the probability of unauthorized passage of the coolant is higher. high temperature to the collector.
Dividing three-way valves, by the way, can also be used in a similar scheme. Only the place of their installation - on opposite side bypass, and they already regulate the separation and redirection of the cooled coolant flow to the mixing point, towards the pump.
The mixing unit with a three-way valve, due to its large stable performance, is more suitable for large collector interchanges with several circuits of various lengths. They are also used in the case of using weather-dependent automation, which often also involves automated control operation of the circulation pump. For small systems, it does not justify itself, as it is more difficult to adjust.
The diagram shows a non-return valve (pos. 10.1) under a question mark. In principle, it is justified if, for one reason or another, the circulation pump of the unit does not work, for example, the automation gave the command to stop circulation. In such situations, the jumper from the return to the three-way valve can turn into a completely uncontrolled bypass, which will unbalance the system and affect the operation of others. heating appliances in the house. The check valve is able to prevent this phenomenon. However, many experienced craftsmen question the likelihood of such situations, and consider the valve in this area to be completely redundant and even harmful, as it provides unnecessary hydraulic resistance.
Three way valve prices
three way valve
Scheme 3 - with a three-way thermostatic valve working with converging flows and a serial connection of a circulation pump
On sale you can find thermostatic valves, which are organized according to the principle of mixing two flows converging along the same axis. With them, the assembly diagram of the pumping and mixing unit can take the following form:
It is not difficult to distinguish such thermostatic taps, by their characteristic shape and applied diagrams (pictograms) of the flow direction.
The circuit shown above is already good for its compactness. Bypass, as such, is generally absent, since we fully perform its role ourselves mixing valve. Otherwise, it is still the same circuit with the principle of connecting the circulation pump in series.
Scheme 4 - with a two-way thermal valve and a parallel connection of a circulation pump
But such a scheme is already significantly different from all those shown above:
A similar principle of node structure suggests the so-called parallel connection pump, literally on the bypass. But two meeting flows approach the upper point of this bypass - from the supply common system and from the collector return. A two-way thermal valve with a thermal head and a remote sensor is installed at the supply - everything is the same as in the first scheme. The pump that circulates through the jumper takes both converging flows, and their mixing takes place in the tee from above (highlighted by an oval and arrow) and in the pump itself. But further, at the lower point of the jumper on the tee, the flow separates. Part of the coolant with already aligned to required level temperature is sent to the supply manifold of the “warm floor”, and the excess amount is discharged into the common “return” of the heating system.
Such a scheme attracts, first of all, with its compactness. In conditions of limited space for the installation of a mixing unit, this is one of the acceptable solutions. However, she has many shortcomings. First of all, it is obvious that it is clearly inferior in performance to nodes with a serial connection of the pump. It turns out that a certain volume of coolant, after mixing and bringing to the required temperature, is pumped by the pump for nothing - it does not participate in the operation of the underfloor heating circuits and simply goes into the "return".
In addition, such a system is notable for considerable complexity in balancing, and often requires the installation of additional balancing and (or) bypass valves.
Interestingly, many pre-fabricated mixing units are organized exactly according to parallel circuit- most likely, for reasons of maximum compactness. And craftsmen they come up with ways to remake them under a more “obedient” scheme - with a sequential pump.
Comfort in the house is one of the most important components of arranging your own home. This is not only a cozy atmosphere and modern technology, but also high-quality ventilation, and most importantly warm and good climate. It is this point that deserves special attention.
Modern technologies offer wide opportunities heating the house, and along with the traditional central heating more and more often use the system "warm floor". mixing unit for a warm floor with your own hands, this is only part of the work that you have to do.
The collector is a kind of connecting pipeline, distributes the coolant in various heating systems. In simple words, it is just a pipe that can connect and connect other pipelines.
For everyone similar types thread connections are applied on both sides: external and internal. The price of such a device depends on the manufacturer and configuration.
AT heating system for a warm floor, the coolant is supplied to the collector, with the help of which it is distributed over all loops. After that, the coolant moves to the return manifold, which directs it to the boiler for heating. The process is repeated again.
Scheme and principle of operation of the mixing unit
The mixing unit includes a pump and a valve. But more advanced configurations are often found.
The circulation pump may be located on the boiler itself, but its power will not be enough. For underfloor heating, it is necessary to put a separate pump on the mixing unit. In this way, the temperature will be freely regulated and lowered from 70-90 °C to 35-50 °C.
In addition, there is a fuse on the mixer without fail, which turns off the pump as soon as the temperature in the supply exceeds the set one.
In the supply pipe, the water reaches 85 °C. Legend:
- Three-way valve;
- Pump;
- Temperature sensor;
- Check valve.
The return line is from the manifold. The temperature of the coolant in it is 40 ° C. It has a non-return valve that prevents backflow of water.
Thus, when the thermostatic device is activated, the damper will automatically open, thereby mixing more cold water from return. After normalization of the temperature, the damper closes.
2-way mixing unit
A two-way or feed mixer works according to the principle described above. After the thermal head is activated, it cuts off the hot water supply and mixes the water from the return. The floor does not overheat, thereby increasing its service life.
This type of mixing unit has a small throughput, so the adjustment of the water supply occurs smoothly, without jumps. Most of the craftsmen prefer this particular type of mixer. But, unfortunately, it is not suitable for heating areas larger than 200 m².
Three-way valve
It plays the role of a checkpoint in combination with the functions of a bypass valve. But, unlike him, inside the three-mover mixes hot water With cold return. As a rule, such devices are equipped with thermostats.
Inside, between the return and supply pipes, there is a damper. By opening or closing it, the water supply is regulated.
Do-it-yourself installation and installation of a mixing unit for underfloor heating
Due to the high cost of finished floor heating equipment, the profitability of assembling such equipment with your own hands is quite high. Unfortunately, not everyone will be able to cope with this task, but further information will be useful in any case. So, the material that will be needed for installation:
- union nuts;
- nipples;
- air vent (manual);
- thermometers;
- check valve;
- circular pump;
- tees; various types of connections, etc.
The assembly technology consists in the installation of thermometers installed in the supply and check valves. Their task is to control the degrees of the transported liquid. The principle of operation of the remaining elements of the circuit has already been described earlier.
The pump, due to circulation, will support the process of heating water in the pipeline. Thanks to the installation of a bypass, the system will gain protection against overheating. The water drain valve, in turn, will protect the pipes from bursting in case of excess pressure.
After the assembly of the unit is completed, it is connected to the circuits using fittings. But before you start the system, you need to balance it.
Mounting Features:
- The assembled or factory mixing unit is mounted to the contour of the warm floor.
- Installation can be either left or right hand.
- The node can be attached in a special locker, in the room itself or in a specially designated room (boiler room).
- Install the pump first and temperature sensor.
- A mixing valve is connected to the supply pipe (“warm”), and a warm valve is connected to the return pipe.
- Balancing is done using test inclusions: at high or low temperature, it is respectively reduced / increased until it is normalized.
The underfloor heating is connected according to the diagram below. However, each connection case has its own characteristics. For example, when single pipe system, the bypass must be constantly open, with a two-pipe one, this is not necessary.
Connection schemes differ in the presence and absence additional elements, but it's not that important. The main thing is to know that valves, flow meters and thermostats must be installed on each group of collectors.
One of the "know-how" technologies is weather-compensated controllers. Thanks to them, the temperature of the warm floor is automatically regulated, depending on the weather outside. Special sensors every 20 seconds measure how many degrees it is outside and, based on this, they shift or do not shift the temperature of the warm floor by 4.5 °C.
At the end of the instructions, I would like to add a video that shows all the subtleties of installation:
Advantages of a warm floor with a mixing unit:
- Long service life. The only element in the system that is more prone to wear than the others is the pipe. The minimum term of its wear resistance is 50 years.
- Automated control, due to weather-dependent thermostats. The heating level is adjusted according to how cold it is outside in this moment time.
- Ability to use manual mode. Suitable for those who prefer to control the temperature with their own hands.
- Impossibility of overheating of the system and rupture of pipes, due to the presence of temperature sensors and special valves.
- economy. When installing the system yourself, you can save a lot of money.
How to choose high-quality pipes for underfloor heating, read on
- why they are needed, how to choose, how to stack.
Correctly made calculation of a warm floor will allow not only to lay the system better, but also save money on materials. all the necessary formulas.
Warm floor - perfect solution, both in terms of comfort for the consumer, and in terms of saving thermal energy. Warm floors are different types: electrical wire, film, infrared, etc. We will dwell in detail on water heated floors - because. We believe that a human dwelling already penetrates a sufficient number of electromagnetic fields.
The principle of a water heated floor is simple: a heater is laid on the subfloor, a pipe is attached to the heater. The pipe can be made of, or copper. We recommend single layer pex pipe or PERT. At the junctions of the future screed and walls, a concrete screed with the addition is poured over the pipe. Tiles are laid on the screed. You can also laminate - but this coating will be less efficient at dissipating heat.
The warm floor is ready. As a rule, a coolant with a temperature of not more than 50 ° C is fed into the pipe in order to avoid thermal expansion of the screed and, as a result, cracks in the surface of concrete or tile floors.
What engineering equipment is used for underfloor heating? Let's consider several options.
Option 1:
- the room has small area, is it a bathroom, toilet or hallway. If there is only one room with a warm floor, then installing a mixing unit is quite expensive. As a way out - you can use a set for underfloor heating.
As seen from schemes 1, the pipes of the underfloor heating circuit are connected to the terminals of the collector used for radiator heating. Previously, even at the stage of laying pipes in a warm floor, a gap is made in the middle of the circuit, and the ends of the pipes are connected to the kit. The kit includes the following equipment: thermostatic valve with built-in thermostat, two shut-off valves, drawer for concealed installation with lid.At the bottom of the valve there is a handwheel that controls the thermostat. With its help, the maximum temperature of the water in the underfloor heating circuit is set. If hotter water enters the circuit, the thermostat will close the valve. At the top of the valve is a thermostatic box. A remote thermostatic head is put on it, for example. thermostatic head monitors the temperature in the room: if the room is hot, the head will close the valve and there will be no circulation in the circuit.
If it is planned to heat a whole floor, or even a whole cottage, with underfloor heating, for this case you will either have to use a ready-made mixing unit, or build it from special kits to separate the high-temperature radiator circuit (from 70 to 90 ° C) from the low-temperature circuit of underfloor heating ( 40-50°C).
Option 2a finished node:
Optimal in terms of price / quality ratio, the nodes are produced by Watts Industries. The line has nodes for small spaces and for larger rooms. The kit already has a pump, thermal switch, mixing valve and connection to the manifold.
Option 2b set valve + thermal head:
Build cheap option the mixing unit will help the circuit on three-way valves Herz Calis TS. You can choose a ready-made kit for famous area warm floors: up to 50 m2, up to 200 m2 or up to 300 m2.
On the scheme 2 shows a warm floor consisting of one, but a large circuit. The pump drives the water in the circuit. A thermostatic valve is installed at the supply to the warm floor, controlled by an actuator electronic regulator temperature or .The principle of operation of a warm floor is described by this scheme: three-way valve Calis stands at the intersection of the return line and the bypass. Thermal head installed on the valve with a remote sensor measures the supply temperature, if the supply is hotter than the set value of the thermal head (for example, 45 ° C), then the valve closes the return flow, and the circulation goes in a small circle - through the pipes of the warm floor. To prevent the warm floor from overheating the room, the controller that controls the thermostatic valve TS-E 772303 monitors the temperature in the room through the drive, and if it is hot, it shuts off the supply to the floor heating circuit or turns off the circulation pump of the small circle.
How floor heating works scheme 3 the same as in diagram 2, the Herz Calis TS three-way dividing valve separates the high-temperature circuit from the underfloor heating circuit. Each branch of the warm floor is connected to a manifold with flow meters on the return line. Flow meters allow you to set the required coolant flow for each branch. Thermostatic axle boxes are installed on the manifold supply, they can be controlled by controllers through Herz thermal actuators or. One controller can control one room with up to 8 branches.Option 2 in three-way mixing thermostatic valve:
Option 3:
- if we are talking about an apartment building with its own boiler room and large quantity rooms with underfloor heating, then you can divide the house into zones, and use the previous schemes in each zone, or you can organize a fairly large mixing unit for all underfloor heating circuits. Here we should recall the Herz 4037 three-way valves.
On the diagrams 4 and 5 the input from the heat source is shown, it is either a boiler room, or a heat exchanger, or an ITP or a central heating station. A bunch of Herz 4037 three-way valve + actuator - controller allows you to limit the temperature of the coolant entering the warm floor, for example, to 50 ° C. Further warm water either enters the common collector of the underfloor heating ( scheme 4) on either end user (scheme 5) - on a per-apartment or floor-by-floor distributor. Temperature control in separate rooms possible as controllers: simple
