A sensor for a warm floor is installed. The heated floor temperature sensor has burned out - what to do? Types and brief characteristics of thermostats

In modern reality, electric floor heating is becoming increasingly common. This creates more comfortable living conditions.

The need for a sensor

For stable temperature at electric heating floors, it is necessary to maintain certain time limits for disconnecting and connecting electricity supplied to the heating elements. It is for this reason that when installing a heated floor, it is necessary to install a temperature sensor in the heated floor.

Timely installation of a temperature sensor allows you to solve many issues. In the absence of such a sensor, it will be very difficult to maintain a comfortable optimal temperature, and excessive energy consumption is also possible, which will entail additional financial costs.

If certain floor coverings, such as carpet or laminate, overheat, fumes that are harmful to health may be released.

There is a possibility of laminate deformation due to overheating. If you install the sensor in a heated floor system, these problems are automatically eliminated.

There are many on the Internet various photos heated floor temperature sensor. With many options to choose from, you can choose the best option for your system.

Existing types of floor heating sensors

The temperature of the heated floor is regulated by a thermostat using a connected temperature sensor. It is located near the heating elements, which facilitates more accurate measurement of the ambient temperature. Existing sensors are divided into external and internal.

The external sensor is designed to measure the room temperature; it is mounted close to the heated floor. The internal sensor is placed close to the heating elements mounted in the floor screed.

The instructions for the heated floor temperature sensor inform you that temperature sensors are classified depending on the surface under which they are planned to be installed.

If you need to install them under linoleum, or laminate, or parquet, then purchase a sensor in the form of a plastic cylinder with a wire. If the temperature sensor is mounted in concrete covering, screed, a device equipped with a protective shell is required.

Installation of sensors

Sensors are installed to be able to automatic regulation warm floor temperature. Consequently, there is a need to connect a temperature sensor to the thermostat. It is with the choice of a place to install the thermostat that the installation process begins, directly of the temperature sensor.

The thermostat is installed away from other heating devices, these can be radiators, stoves, fireplaces, at a height of about one meter from the surface of the heated floor.

The mount is practically no different from a regular socket. Next, two grooves are cut, one for the power wire from the heating element connected to the thermostat, while the other is needed to connect the sensor.

The question arises of how to install a heated floor temperature sensor so that there are no difficulties when repairing it, if necessary. In order to avoid such situations, electrical wires are laid in plastic pipes, placed in prepared grooves, which will make it possible to easily make the necessary repairs.

It should be taken into account that the tube with the temperature sensor cable located on the floor should be located in the center of the gap, between the floor heating elements and about a meter from the vertical wall where the thermostat was installed.

The outlet of the pipe must be sealed with tape to prevent the solution from getting inside. After installing the sensor, it is advisable to fix the pipe where the cable with the temperature sensor is located using improvised means.

If you are laying a film heated floor, then the sensor is installed under any sheet of the heater, having previously laid thermal insulation, for the efficiency of the heating system.

System check

Having completed the installation of the heated floor system, before applying the screed, it is necessary to check its performance. If this is not done, then it will be almost impossible to make any changes once you have already made the screed. Pre-measure the resistance of the temperature sensor of the heated floor and its elements.

Performance is considered confirmed if deviations in resistance indicators are within no more than 10% of the declared passport data.

It is advisable to connect the thermostat to the electrical network using an individual line from the electrical panel. Having previously checked electrical connections, the heated floor system is turned on for a short time to check its performance.

After switching on, the thermostat should respond with a signal from the light bulb, while at the same time heating of the heated floor elements occurs.

Replacing the sensor

It happens that a situation arises when the floor heating system stops working. In this case, the question arises of how to check the heated floor temperature sensor. The reason can be found out using diagnostics carried out by the tester.

First you need to check the input wires; this can be done by disassembling the regulator body. After turning on the power, use a tester to check the voltage. If it is absent, all elements are checked, up to the output contacts. The wires of the thermal elements are disconnected from the de-energized regulator and further testing is carried out.

The resistance of the sensor itself is checked with an ohmmeter. If it malfunctions, it cannot be repaired; the sensor is dismantled and a new one installed.

When installing a heated floor system, you can make sure that installing a temperature sensor and connecting a temperature sensor with your own hands is an easy task. It will be much more difficult to install temperature control equipment if it was not installed in a timely manner, along with the installation of the heated floor. But even in this case, the situation can be corrected.

If there is a temperature sensor, the entire underfloor heating system can operate correctly and create a comfortable microclimate in your home.

Photo of heated floor temperature sensors

An element such as a heated floor sensor plays a vital role in the operation of the entire system, its stability and durability. Incorrect installation threatens to reduce the overall resource, as well as loss of the warranty period.

During its installation, you need, first of all, to compare the length of the existing corrugation (the principles of its use will be discussed a little below) and the sensor cable. In some cases, there may be two wires - power supply and transmission of the resistance signal to the thermostat. In this case, in addition to the length, the internal diameter of the corrugation must also be taken into account. For two conductors with one sensor - 16 mm, for one - 10 mm.

It is also worth noting that it is necessary to observe not only the installation technology, but also the location. Optimal placement, despite the peculiarities of the laying and topography of the floor (steps or flat floor), this is the correct thermal zone. More in simple words- the sensor must be inserted between the first and second turns, while maintaining an equal distance between them.

What is needed to install a heated floor sensor?

Tool:

Hammer (alternative to chisel and hammer).
Screwdriver.
Screwdriver.
Pliers.
Crown (attachment for a rotary hammer or drill).

Materials:

Plastic flexible corrugated pipe DKS (preferably an internal broach).
Clips (dowel clamps are used as a replacement if flooring lost its strength).
Connecting box.
Plastic socket box.
Ties for connecting gasket elements.

Installation process

Step one - marking the installation location of the thermostat and cutting a recess for the sensor

The optimal height for placing the regulator is 0.5 meters. Having resorted to exactly this value, the standard sensor wire will be enough to pull it into the nearest fan zone, bypassing common mistake- installation in a cold zone.

In the case of a cable heating conductor or ready-made thin mats on a synthetic mesh, there can be only one installation location, since it is determined by the output of the power cables from the extreme point of the cable.

The location can be adjusted only at the beginning of laying out the heated floor.

Using a drill with a crown attachment, a recess is made into which the socket box is installed. It is here that the connection of the sensor cable with the regulator and, in fact, the power cable with the household network input will take place.

From the resulting recess, to the depth of the lower entrance through hole socket box, a vertical recess is made with a hammer drill. The same is repeated on the floor.

The junction of two vertical recesses should not have sharp corners, as this can cause damage to the conductor as a result of the mobility of the structure and cyclical heating or cooling concrete screed.

Step two - installing a socket box and connecting the power supply

Installation of the socket box (box) is carried out on the starting or finishing putty. After the latter has set, a 220 V wire is inserted into the upper hole. At this stage, you should not rush to finish the network supply, since the length of the wire may not be enough to install the connecting terminal block.

Step three - laying the corrugation with a temperature sensor

First of all, you need to stretch the sensor with the wire along the entire length of the corrugation. Exactly at in this case you will need the previously mentioned internal broach. The sensor itself should protrude a few centimeters beyond the flexible tube. The upper part of the conductor in the corrugation is inserted into the socket in which the regulator will be located.

It is worth immediately noting that if several underfloor heating systems with similar sensors are installed, one regulator can be used. It is enough to perform a through groove on the wall and bring the cable from another room to the place where the regulator is installed. This must be done before installing the socket box.

Step four - sealing

All connections of the corrugated pipe, starting from the box on the wall and ending with the sensor outlet into the free outlet, must be sealed. The parts of the corrugation are connected with electrical tape, and the sensor itself is closed with a plug. The connection of the latter is also duplicated with electrical tape.

Careful sealing is essential for protection internal space from contact with concrete solution or putty, which will allow replacing the sensor if, of course, such a need arises during operation.

Thus, it becomes quite clear that the corrugated soft pipe serves as a passage element for quickly replacing the heated floor sensor without removing tiles or other floor covering.

Step five - selecting a plug for the sensor

As a rule, the heated floor kit already includes everything you need, including a plug. If it is plastic or rubber, it should be replaced with copper, which has higher thermal conductivity.

If such a plug is difficult to find, you can make it yourself. To do this, you need to take a piece of copper tube for 15 and, accordingly, a plug according to its size. There is no need to use any sealants or seals. This can affect the actual performance during the heating and cooling of the screed.

It is very rare to find ceramic plugs in specialized stores. It makes no sense to talk about the price, since the size of the product is small. Ceramics conduct heat very well, but have a significant drawback - it cannot be separated from the main mass of the concrete screed.

Step six - attaching the sensor

The heated floor sensor, already packed in a corrugation and plug, must be secured. To do this, the edge placed on the floor, immediately in front of the plug, is secured to the floor with construction metal tape, or rather, with a small piece of it. The power wire of the heating cable or thin mat laid nearby is secured to the corrugated pipe with plastic ties.

The tightening force should be minimal, which will eliminate the possibility of changing the shape of the tube. This is very important for further manipulations.

Step seven - putty the groove with the sensor

Using tile adhesive, you can cover the sensor level with the rough concrete screed. To start subsequent masonry work there is no need to withstand any time period.

The true purpose of corrugation

The heated floor sensor, like any other electronic item, can fail. Thanks to the soft corrugated pipe and the internal broach, which was emphasized at the beginning of the article, you can easily replace a faulty temperature control element.

To do this you will need:

remove the thermostat from the socket box, having previously de-energized the room;
disconnect the sensor itself from the terminal block and the regulator;
pull out the mentioned one through the corrugation;
using a broach, thread the original sensor back until it stops

After this, you need to install the regulator in place and check the correctness of the repair work. Thanks to the broach, the sensor head will reach the copper plug (its remote location) and will not get tangled at the bend between the floor and the wall.

Which corrugation is best to use?

Color, brand and composition do not matter. Only the inner diameter matters. Branded sensors, which come complete with ready-made heated floors, fit closely into the 10 mm corrugation. The latter is also included as standard equipment.

If, for any reason, the sensor is replaced with a compatible, but non-original model, it is worth using a 17 mm corrugation during the installation process. To install it, you only need to make a deeper groove.

Do I need to raise the sensor head as high as possible to the top layer of the screed?

In heated floors for the domestic sector, the sensor head is in copper tube rises as high as possible. IN industrial systems this is not necessary, since the cross-section and power of the cable heating element is much larger.

What should you pay attention to when installing the sensor?

When installing any heating system, the temperature sensor must be inserted into the fan-shaped heating zone. The minimum distance of the sensor from the wall is 0.5 meters, between the second branch of heating elements or a thin heating mat. This will allow you to correctly monitor the floor temperature at this point. The readings taken from the fan zone are as true as possible, even if we're talking about about hundredths.

The location of the thermostat sensor between the first line of laying the cable heating element will lead to the recording of incorrect data and, as a result, a decrease in the service life of the heated floor. This will be triggered by overheating of the conductor or frequent on/off cycles in a minimum time period.

If we are talking about installing an intelligent thermostat with an output sensor that calculates the heating and cooling rate of the screed, ignoring the mentioned placement will disrupt the “prediction” function. It is also worth noting that a significant difference in readings between actual and detected heating can lead to an error such as a sensor break. In fact, there is nothing wrong with the sensor, it is just located in a colder zone and does not see changes in the thermal background when the screed is heated and cooled above the underfloor heating cable.

The lack of resistance information for the thermostat is fraught not only with wear and tear of the entire system, but also with the failure of the included prediction programs, which can only be eliminated by contacting a service center.

With mechanical regulators the situation is simpler. No programs or settings, only mechanical control buttons that set desired temperature according to data from the sensor. Placing the latter in the first line or cold zone will indicate insufficient heating. The transition from a comfortable mode to increased heating will provoke not only wear and tear on the mats and cables, but also melting of the contacts in the junction box where the household network connects to the consumer itself.

What to do if the sensor is installed incorrectly?

In the process of rough work, it is very easy to correct the situation. It is enough to cut the groove a little further and, using an additional piece of corrugation with a diameter of 10 mm, move the sensor a little further.

Lack of sensor cable length can be corrected by moving the wall regulator lower in level or by adding a wire of the same cross-section and then insulating it.

If the work is completed and carried out fine finishing- the tiles are laid, it is necessary:

remove the piece of tile under which the heated floor sensor is located;
clear the end of the recess in which the corrugation is laid;
remove the plug (plug) of the sensor;
cut off the sensor from the wire;
add the required wire length;
seal the extended part in a new 10 mm corrugation;
place in the added groove;
apply tile adhesive and lay the tiles.

After such work, the shutter speed until the first switching on will be 18 days.

Possible options for connecting a heated floor sensor

Despite the simplicity of the process described above, there are several ways to connect the sensor, namely:

direct connection “cable - thermostat”;
using a junction box.

The first connection option is discussed above, which, according to by and large, is the most common and easy to implement. You can do it yourself without having the proper experience.

The second is considered more reliable, but at the same time requires more costs, both material and time. In this case, the heated floor sensor is output to a separate line of the electrical panel. To do this, you need to buy and lay 2.5 sq. copper power cables. mm.

This approach requires, in addition to a dedicated line, to install an RCD in distribution board, and also be mounted on the line circuit breaker, which breaks the circuit when short circuits and overloads occur on a dedicated line. Restarting is possible after a few minutes - after the folding spring has cooled.

In a room with the floor itself, it is necessary to install a socket box similar to the previously mentioned one, into which to connect the power line from the common panel to the terminal block. The latter is where the sensor itself is connected and outputted.

This scheme is based precisely on safety - conducting the entire underfloor heating system through a circuit breaker in a common distribution panel.

Bottom line

When installing a heated floor sensor, it is better to use original models, which come complete with a heating cable or thin mat. Separate use of Chinese sensors is fraught with wear and tear on the system.

Correct functioning and display of the current resistance on the thermostat is a consequence of choosing the optimal fan zone, bypassing the cold one.

The entire distance, right up to the plug, must be carried out straight. One 45 degree turn is allowed. Otherwise, replacing the sensor will not be possible.

Thermal elements of a heated floor do not come into contact with the air they heat, so the temperature in the room is controlled by an external device - a thermostat. The amount of electricity consumption depends on its functionality. Agree, for an informed purchase it is worth understanding the characteristics and capabilities of the device.

We will tell you how to buy the most suitable thermostat for your underfloor heating. The article we have presented describes its varieties, which differ in the type of control, the type of temperature-fixing device and the method of installation. Tips to make your choice easier optimal model.

The thermostat is designed to control the operation of the underfloor heating system (WHS). It consists of a control device and one or more sensors. Information from them is taken into account when turning heat mats on and off.

Thanks to the operation of the device, an even temperature is maintained in the rooms and energy consumption is minimized.

The rhythmic switching on of heated floor heating mats allows you to save half of the electricity, which pays for the cost of the thermostat in a few months

Thermostats are easy to use and even teenagers can use them. In this case, the operating mode of the STP can be changed several times a day without fear of breakdown or premature failure of the equipment.

The minimum temperature can be adjusted separately for each room. In addition, some models allow programming of the device’s operating mode during the day.

Types of devices by type of control

The operation of the STP is regulated special device, which is usually hung on the wall. It has standard dimensions key switch and can be equipped with a mechanical, electronic or programmable interface.

Mechanical without electronics

A mechanical thermostat does not include in its design electronic components. Electrical wires to the STP go directly through the device, which adds problems during its installation.

Mechanically, the thermostat usually has a limit switch. It allows you to quickly turn on/off the device without having to change temperature settings

The function of a temperature sensor in a mechanical regulator is usually performed by a bimetallic plate, which, when cold, closes the contacts of the heating mats. As the temperature in the room increases, it bends and disconnects the electrical circuit, as a result, heat generation stops.

The regulation interface is represented by a wheel, by rotating which you can adjust the temperature in the room.

This device design has its advantages:

Low price.
Easy to use.
Ability to work at low temperatures.
Reliability.
Independence from voltage surges.
Long service life.
Automatic switching on after a power outage.

The simplicity of a mechanical thermostat also causes its disadvantages, which can be critical:

Minimal functionality.
Lack of remote control capability.
Large error.
The presence of clicks when bending the bimetallic plate.

Despite their simplicity, mechanical thermostats have a strong hold on the consumer market due to their high reliability, simplicity and interchangeability.

With electronic mechanism

The appearance of electronic thermostats may not differ from mechanical devices. The main difference lies in the internal filling of the device.

Mobile thermostat units are usually battery-powered, so their displays are not backlit. Setting up such devices in dark room difficult

Electronic floor heating controllers consist of the following components:

Frame.
Control microcircuit.
Built-in or external temperature sensor.
Electronic key for turning on and off the power supply to heating mats.

Temperature adjustment in electronic thermostats can be done using a touch display, buttons, an adjustment wheel, or a combination of these methods.

Some models support multi-zone temperature control, in which several isolated heated floor zones with their own sensors are independently connected to the control microcircuit.

The advantages of electronic devices include:

Possibility of installing a remote temperature sensor in any location in the room.
Availability of a display showing the current and set temperature.
Possibility of multi-zone heating control.
Temperature sensor accuracy up to fractions of a degree.
Indication in case of error or breakdown.
Possibility of completing with an external remote control unit.

The disadvantages of an electronic thermostat are mainly due to the presence of a microcircuit.

Thermostat models are not tied to specific manufacturers. During installation, the devices can be combined with heating mats and sensors from various companies

The disadvantages include the following characteristics:

Dependence of the stability of the control microcircuit on voltage drops.
Failures in settings during a short-term power outage.
Higher price than mechanical devices.

Mechanical thermostats are only 15-25% cheaper than their electronic counterparts, therefore, in the absence of voltage drops in the network, the choice between these two types of devices is determined mainly by their appearance.

Great looking luminous displays are often the main motivating factor when purchasing a particular thermostat model.

Programmable electronic devices

The main difference between programmable thermostats and conventional ones electronic devices is the expanded functionality of the control microcircuit. This type of device allows you to set different temperatures in the rooms depending on the time of day.

As a result, users receive huge advantage in the form of energy savings by reducing air heating in an empty house

The cost of a programmable thermostat directly depends on the quality of the display and the number of parameters that the device operates in its operation.

Programmable thermostats may also have a remote control function from a smartphone via Wi-Fi.

The disadvantages of such devices include the high cost and difficulty of setting up in the absence of skills in handling the equipment. Otherwise, the pros and cons of programmable thermostats are the same as conventional electronic ones.

With remote control unit

In electronic and programmable thermostats, internal components can be divided into two blocks: main and mobile. Electrical cables are connected to the main box and wired temperature sensors are connected. It can be located in any remote location of the room, which facilitates installation work.

Some manufacturers of programmable thermostats produce their own applications for smartphones, by installing which you can configure the equipment from your gadget

A battery-powered mobile unit is used as a control panel. It can lie on a table or hang on the wall. Additionally, the consoles can be equipped with external temperature sensors that measure the ambient air temperature. Such devices are convenient because they allow you to hide the adjustment mechanism from small children.

Types of temperature sensors for underfloor heating systems

The operating mode of STP heating elements directly depends on the correct temperature measurement by temperature sensors. They can be built into the body of the control box or placed remotely.

Thermal sensors come in four types:

To determine air temperature.
Infrared, measuring the heating of the floor surface from a distance.
To determine the temperature of the floor surface by contact method.
Combined.

The air heating sensor is usually built into the thermostat or its mobile unit. It is used when the heated floor is the main heating system. The main requirement for its location is the presence of natural air circulation around the device.

The tips of temperature sensors should be made of materials that conduct heat well, then the speed of the thermostat’s response to excess heat will be higher

Infrared floor temperature meters can be built into the thermostat housing or placed as a separate unit. The main requirement for their installation is that there are no obstacles between the sensor and the floor. The distance between the device and the surface to be analyzed must be at least 30 cm.

Contact-type temperature sensors look like a long wire with a thickening at the end. On the one hand, they are connected to the thermostat unit, and on the other, they are placed in a special long corrugated pipe under the floor. This installation feature makes it easy to replace a broken sensor with a new one.

The advantage of underground placement is the possibility of multi-zone control of floor temperature within one room. Typically, such sensors are installed as part of an additional heating system.

Several sensors can be connected to the thermostat, but this scheme is used mainly within the framework of an integral set of equipment.

Rules for installing a thermostat

Electrical cables and wiring from temperature sensors must be connected to the thermostat hung on the wall. To do this, appropriate grooves are made in the slab - grooves. In them the wires are laid to electrical panel and to the floor.

The floor temperature sensor must be as far from each other as possible from adjacent heating elements, otherwise when they are turned on, it will immediately trigger and disconnect the electrical circuit

If the equipment is installed in a room with high-quality interior decoration, then you can use overhead devices and run cables over the walls in boxes.

It is better to place the adjusting device at a distance of 40-170 cm from the floor, unless otherwise provided in the instructions. If you have a mobile control panel, the main box can be installed in any convenient place.
The main functions of the floor temperature sensor are to prevent overheating of the floor covering and foot comfort, but not to control the temperature of the air in the room.
In damp rooms It is allowed to use thermostats with appropriate protection against water ingress.
When the device is built into a wall, a mounting box made of non-combustible materials is used.
Wires from the regulator to underfloor heating heaters with a power of more than 1 kW must be routed in hollow heat-resistant tubes.
The floor temperature sensor should be located between the heating elements and at least 50 cm from the walls.
When turning on the device for the first time, it is necessary to take into account the minimum operating temperature specified in the instructions.
Wire connections to the thermostat terminals must be made exclusively according to the diagram specified in the manual.
Installation of the thermostat begins only after the heating elements are finally laid on the floor in order to correctly calculate the length of the wires.
When filling the floor with solution, it is necessary to well insulate the end of the tube with the temperature sensor.
Before pouring the solution onto the floor, it is necessary to check the functionality of all elements of the system.
Heating mats must be grounded, and an RCD is installed in front of the thermostat.

Compliance with these rules will protect residents from electric shock, the house from fire, and equipment from premature failure.

When purchasing a thermostat, you need to know certain nuances in order to pay only for required functions and ensure the longevity of the operation and the device itself.

When choosing a thermostat, you should pay attention to the quality of the plastic case. If the manufacturer saves on this, then it is worth thinking about the reliability of internal components

These selection features include the following rules:

For heating small rooms, an inexpensive mechanical or electronic thermostat with internal air temperature sensor.
It makes sense to buy a programmable thermostat if you need multi-zone temperature control, as well as to save energy when there are no residents at home during the daytime.
The thermostat must correspond to the maximum power of the heating elements with a margin of 25-30% in case of operation at reduced voltage.
For houses with wooden interior decoration, only overhead thermostat boxes are suitable.

Also, when choosing a device, it is necessary to take into account its design.

Existing the lineup allows you to buy not only reliable equipment, but also a thermostat that will fit perfectly into the interior of the room.

Video #3. Installation of a temperature sensor in the floor:

Analysis of various thermostats allows us to say that their maximum functionality is not always justified from both a financial and operational point of view. Therefore, this equipment must be selected for each STP separately.

How did you choose, attach and connect the thermostat for the underfloor heating system? Share what became the decisive landmark for you? Please leave comments in the block below, ask questions, publish useful recommendations and photos related to the topic of the article.

Warm floor - functional modern technology heating systems used in a house, apartment, cottage, children's and medical institution, production premises. Its irreplaceable component is a thermostat.

The heated floor sensor records and transmits the floor temperature to the thermostat, which, reacting to the information received, controls the entire heating system. Timely switching on and off of the heated floor ensures the creation of a comfortable atmosphere in a certain space.

Equipment Features

Hot water as a heat source is used when installing a heated water floor. To adjust a comfortable room temperature, a warm water floor sensor mounted in the screed is used.

There are several types of thermostat sensors. Thermostats with two sensors are considered more reliable. This provides control over the external room temperature and internal state systems. The presence of these two devices makes heated floors more economical and safer.

An additional key serves as a child safety lock. Some models of thermostats with sensors are equipped with sound and light alarms that inform owners about problems and violations of the system’s operating mode.

Far infrared radiation from film heated floors is used for the main or additional heating system of any room. Infrared sensor for heated floors, measures the temperature in the place where the thermostat is installed.

Due to the fact that the floor heating sensor is mounted directly into the floor structure, the influence of external factors on its errors is minimal.

A heated floor thermostat with a temperature sensor, together with a heating cable, is considered the most important element of the heating system.

Unique sensor-limiters prevent the floor surface from cooling to a certain temperature. They are most often installed in an insulating pipe in a cable heating system.

The sensors included with thermostats for laminate tiles are simple and programmable. To obtain maximum savings in operating costs, it is better to buy a programmable floor heating sensor. An inexpensive, reliable mechanical device is used for simple manual temperature adjustment.

The heating floor temperature sensor is connected to a wall where there is no draft or direct contact sun rays. This connection of the heated floor sensor prevents distortion of temperature indicators and ensures the creation of the desired temperature.

The Devi heated floor sensor, thanks to the presence of fast heating functions and smooth adjustment of the system temperature, allows for the most user-friendly operating mode. When consumed small quantity electricity, heated floors noticeably transform the room into a warmer, more comfortable one.

It is best to buy a heated floor temperature sensor famous brand(Devi, Teplolux, Energy, Legrand). Despite the fact that they cost more than the cheapest options (from 1,500 rubles and above), their use provides precise work systems (and therefore energy savings for heating the room).

Nuances of selection and application

Regarding the key rules for installing the sensor:

To ensure adequate temperature data, the floor heating sensor is installed at a distance of at least 50 cm from the nearest wall.
The total length of the wire from the sensor’s thermal head to the thermostat should not exceed 2 m.

To ensure accurate operation of the sensor (and therefore extend the life of the heating system and avoid excess energy consumption), these nuances must be taken into account.

Even a minimal error in measurements will cost you money, which you will have to spend on maintaining an extra degree of temperature.

By choosing the right temperature sensor for a warm water floor (electric, infrared - any), you will enjoy maximum comfort in your home for a long time.

We'll tell you how to check the heated floor sensor:

Typically, the resistance of the heated floor sensor is in the range of 5-30 kOhm. You can determine more precise parameters of this value by looking at the operating instructions for a particular device.
On the tester in resistance measurement mode, the corresponding maximum value is set. Measurements that differ greatly from the specifications indicate a faulty sensor that needs to be replaced.
To establish the functionality of the sensor, its resistance is measured and compared with the specified parameter in the passport. When it is plugged into the network, a green light on a working device lights up, the cable begins to heat up, and the resistance should decrease.

If everything is in order, the power is turned off and further work on the floor screed can be carried out.

As for the cost of the device, it starts around 1000-1200 rubles. For this amount you can purchase a regular sensor that operates in the required temperature range (from 0º to +30º).

Device installation

Regardless of the manufacturer, a standard installation diagram for connecting the heated floor sensor is carried out.

The following elements of the system will “participate” in this:

A three-core supply cable, in which the phase is a core of any color different from the rest; working zero – blue, white-blue core; protective (grounding) zero – yellow-green conductor.
Heating cable for a heating system, made of two wires with a protective screen.
Temperature sensor located in a corrugated pipe directed to the location of the heated floor, with black and white cores.

It is best to buy a temperature sensor for a heated floor complete with heating system. This will simplify the task - you won’t need to search suitable option. Otherwise, the temperature sensor for the heated floor must be selected independently.

Installing a heated floor sensor does not require any special skills or special equipment, and if desired, you can handle the task yourself.

However, due to the fact that this work will not tolerate errors (the slightest inaccuracy can lead to an error in measurements, which means incorrect operation of the system), it is still better to have specialists do this, along with laying the heated floor itself.

Under parquet, laminate, and other types of soft floor coverings, its installation is done “dry” - a plastic cylinder is attached directly to heating system. The connection of the heated floor temperature sensor under the tiles is carried out in a corrugated tube laid in a pre-made channel in the floor.

To prevent concrete from getting into the corrugated tube, a plug is placed on one side using tile adhesive. If necessary, the temperature sensor can be easily removed from the corrugated pipe without lifting the entire floor covering.

A warm floor is a rather complex, well-functioning system consisting of a heating element, the coolant in which, depending on the type, can be electricity or hot water. The most popular are heated floors powered by electricity. Installation of this type of system involves the installation of not only wires that will give off heat, but also a thermostat. A heated floor sensor is also installed.

Thermal sensor is one of the essential elements included in the underfloor heating system. This is a copper conductor covered with insulating material, the end of the sensor for the purpose of protection from various external influences closed with a special cone. The principle of operation of the device is simple: the sensor independently determines the floor temperature (when heated, the resistance of the device decreases) and then reports the received information to the thermostat.

Next, the thermostat, depending on the data received - high or low temperature - automatically turns the floor heating system on/off. Typically, the device is triggered if the temperature drops below the set point by only 0.5 degrees. In general, the frequency of the “on-off” cycle depends on several factors - thickness, type of coating, heating temperature in the room, presence or absence of insulation.

On a note! The temperature sensor can be located at different distances from the temperature controller. Its information content in this case remains virtually unchanged.

Thus, these devices - both the sensor and the regulator - help create a favorable indoor microclimate by controlling the entire floor heating system.

Features and benefits of use

Installing a temperature sensor and thermostat in a heated floor system is optional. But experts strongly recommend not to neglect them. The presence of these small but important devices is necessary for proper heating operation. The fact is that the absence of a temperature sensor will not allow you to control the heating temperature of the floors, which can negatively affect the condition of the floor covering as a result of violation of operating conditions.

For example, laminate and carpet should not be used at high temperatures - the permissible heating rate for coatings is only +30 degrees. If exceeded, both laminate and carpet begin to release compounds into the atmosphere, which can have an impact Negative influence on human health. Laminate is also prone to deformation when the lamellas are significantly overheated. If a temperature sensor is built into the system, then when a certain temperature is reached, the floor heating is turned off, and the coatings are not in any danger.

The device also helps control energy costs, which means it significantly saves money that goes towards paying utility bills.

Types of temperature sensors for heated floors

To select a temperature sensor that is suitable for specific situation, you need to approach it with full responsibility. And first you should study what types of these devices exist.

On a note! In most cases, sensors for heated floors are included with thermostats, which makes them easier to install and configure.

Table. Types of sensors for heated floors.

Type	Characteristic
	Such a sensor is installed where there is no wind or draft, and where it will not be exposed to sunlight. Otherwise, the device's readings will be inaccurate. This type measures the temperature of the air around it.
	Mounted directly into the surface that will be heated.

sensor for heated floor

On a note! There are types of thermostats that are immediately equipped with two temperature sensors. It is believed that such a system is much more reliable in operation than a conventional one.

Functions and selection of thermostat

The thermostat is also a very important device that is used when installing a floor heating system. It will process the indicators that the temperature sensor transmits to it and, depending on them, control the system.

Thermostat functions:

heating system control;
control and maintenance of optimal floor temperature;
process of monitoring consumed electricity;
optimization and improvement of floor heating operation.

On a note! The energy consumption of the entire system usually corresponds to ½ of its power. In this way, approximate costs can be calculated.

Table. Types of thermostats.

Type	Characteristic
	The simplest type of device and affordable. Its main working element is a special metal plate that reacts to temperature changes. When the system cools down, as soon as the curvature of the plate becomes such that it touches the second contact, the system turns on. The device will not allow you to install a specific floor heating temperature value.
	The device works like this: it is equipped with a special element that produces a special signal. Power directly depends on temperature indicators environment. Such thermostats allow you to set the exact heating temperature, sometimes even down to fractions of a degree. The device is controlled using buttons and a small display. More expensive and more difficult to manage than previous ones.
	The most expensive type of temperature sensor, but it allows you to set certain parameters, upon reaching which the thermostat will turn the entire system on or off. Such a device will create a microclimate in the apartment that is suitable for a specific person. In this case, the programmable thermostat can be configured so that it starts the system at a strictly allotted time. That is, it can heat the floors immediately before the owner comes home, without wasting electricity while he is not in the room. However, it is not advisable to use it in the bathroom.

Experienced craftsmen recommend installing a programmable thermostat during installation. The costs for it will quickly pay off during heating season when electricity bills will increase significantly compared to warm period of the year.

There are also thermostats with a limiter. This type of device is triggered depending on the maximum/minimum permissible temperature. Its main functions are to prevent the floor from overheating or cooling down too much.

There are regulators and alarms. If the sensor detects overheating of the coating, the device will notify the home owner about the violation using a special signal.

Pros and cons of thermostats

Undoubtedly, the use of a temperature sensor and thermostat in itself is a big plus for the operation of the entire underfloor heating system.

However, each type of device has its own advantages and disadvantages.

Advantages electromechanical devices– versatility, ease of use, high reliability and low cost. In addition, if necessary, this type of device is easy to repair or replace yourself. The main disadvantage is the need to control the system manually. It does not respond to ambient temperature.
Electric thermostat(together with the sensor) is equipped with a display showing performance indicators. It also has the advantage of being able to set precise temperature values.
Flaws programmable thermostat– high price, difficult to operate. But some models can even be controlled using a phone or computer.

In each individual case, the most convenient thermostat can be used. For example, electromechanical devices can be used in the bathroom, toilet and other rooms to save money small size and where the person is not located for a long time. But programmable ones are the best option for living rooms, children's rooms, bedrooms.

Floor temperature sensor and controller - how to select and install

The choice of temperature sensor and thermostat for installation in a heated floor system should be done correctly. Here it is important to evaluate the main indicators and operating requirements.

On a note! There are types of thermostats that can record data from sensors located in two zones (rooms) at once. Sometimes it makes sense to purchase just such devices.

Selecting a heated floor sensor depending on the floor covering

Depending on the type of floor covering, certain types of sensors should be used. There are the following types of device.

Stacked under soft covering (carpet, linoleum, parquet, laminate). The sensor in this case is a small cylinder attached to the end of a special cable. It is installed only after the concrete screed has completely dried, in which a small groove is then made specifically for the device.
Installs under hard surfaces. The larger element has a special gel shell that protects the device from shock and mechanical damage.

Installation of thermostat and sensor

Installation of these two devices is quite simple and, as a rule, even beginners do not have any problems if they act in accordance with the instructions. There are two ways to connect a temperature sensor.

Directly. In this case, the heating cable itself is combined in one bundle with a thermostat.
Using a junction box. In this case, one cable is laid from the thermostat to the junction box, and then to heating element- already different.

To connect the temperature control system, you should organize a separate line from the electrical panel. Copper wiring with a cross section of 2.5 mm 2 is perfect for this. Next, a groove is cut into the wall into which the corrugations with the wire from the temperature sensor and the heating cable will be laid.

Step 1. The wire, at the end of which a temperature sensor is installed, is inserted into a corrugated tube of a suitable diameter.

Step 2. The sensor wire also comes out of the other end of the corrugation.

Step 3. The end of the tube, where the sensor itself is located, is closed with a special plastic plug. This is necessary to ensure that nothing gets there, including mortar, with which the system will be flooded.

Step 4. The end of the tube with the sensor is fixed between two heating circuits right in the middle. It is secured with a plastic clamp or special tape. In this case, the installation location of the sensor is selected so that it is relatively close to the thermostat itself; it is desirable that there is relatively easy access to the sensor. Optimal distance from the device to the wall – 50-60 cm.

Attention! The temperature sensor should not be located close to heating devices or fireplaces, stoves. Otherwise, errors in the readings will be noted.

Step 5. The tube from the location of the regulator is led to the floor in a special groove. Its bend at the floor should not be sharp - at least 5 cm.

Step 6. The groove in the wall, after laying all the wires and the corrugated tube in it, is sealed with cement mortar.

Step 7 The wires must be tinned.

Step 8 After this, the wires are connected to the thermostat. The regulator is installed in its place - a hole in the wall above the groove for the wires.

Step 9 All electrical connections are checked and then the floor heating system is turned on for one minute. This will allow you to check its functionality.

Step 10 If everything works, the warning light on the thermostat panel will light up, and the floor system will also heat up. The sketched diagram of the heated floor indicates the installation location of the temperature sensor.

Video - How to connect the floor system to the thermostat

Video - Installing a temperature sensor

Replacing the temperature sensor

If the heated floor temperature sensor fails, it will have to be replaced. Otherwise, the thermostat will not be able to control the heating system. Diagnostics with a tester will help you find out the cause of the breakdown. As a rule, it identifies two causes of a malfunction - both of them are related to contacts (either it is present where it is not needed, or it is absent where it is needed).

The first step is to test the input wires - to do this you will have to disassemble the regulator housing. When the power supply is turned on, the tester checks for the presence of voltage in the wires. If there is no power, it means that one of the switches is not working - then the functionality of the devices in the network is checked up to the location where the regulator is installed. If there is voltage at the input contacts, then the test continues on the weekend. The wires are disconnected from the regulator when the current is turned off. thermal circuit. If in this case, when the power is turned on, there is no voltage on the output wires, then the breakdown is hidden in the control unit or in the sensor itself. The sensor resistance is checked using an ohmmeter. If the sensor does not work, it should be removed if possible and a new one installed.

Attention! The sensor cannot be repaired, it can only be replaced with a new one. In this case, you will have to buy a new regulator.

What to do if the sensor is not installed

Using a heated floor system without a temperature sensor is risky - you can ruin the floor covering. There are several ways to solve the problem.

Equipping the system with an air sensor (installation is possible only for a cable heating system. The power of the heating circuit must be equal to 170 W/m2).
Installation of the sensor in the screed (it is necessary to groove the floor with high accuracy carrying out work so as not to damage the heating system).

During installation of a heated floor system, installing both a temperature sensor and a regulator is quite simple. It is more difficult to carry out work if the devices were neglected at one time, and then realized that they were still necessary. Fortunately, everything can be fixed.