Thermostat for water heated floors - types and principles of operation, operating recommendations, how to choose. Heated floor temperature sensor: installation features, connection options and do-it-yourself testing Warm water floors temperature measurement

A temperature sensor is necessary for the normal functioning of the heated floor. To ensure the smooth operation of this system, it is important to choose the right device.

Peculiarities

The basis for arranging a heated floor is the heating elements of the structure and an automation system consisting of a temperature sensor and a regulator. The sensor is designed to measure the temperature of an object and transmit data to the control unit.

The sensor for the heated floor thermostat should be selected based on the characteristics of the automation unit.

Required condition When choosing a temperature sensor, it is important to follow the manufacturer's recommendations.

More complex systems Heated floor regulators include several sensors. An example of such a thermostat is one that measures temperature at several points. These measurement points are usually the body of the floor heater, the ambient air in the room and the temperature outside the room. The operating principle of such an automation unit is based on comparing measured temperatures, as a result of which the specified floor mode is maintained.

Systems that have more advanced methods of underfloor heating include electric heaters with liquid coolant. Such systems are considered ideal for installing heated floors.

Electric heating systems with liquid coolant have uniform heat distribution, smooth temperature changes, and are flexibly configured and regulated. A thermostat with an electric heater and a coolant liquid must include a thermostat. When combined with a thermal head, a thermostat allows you to more accurately regulate the floor temperature.

How to choose?

When choosing temperature controller sensors, you should follow the recommendations of the temperature controller manufacturers. In addition, when choosing sensors, you should pay attention to its purpose. So, if it is designed to measure floor temperature, it cannot be connected in place of a temperature sensor to measure the air temperature in the room, and vice versa.

You also need to take into account the features of the sensor. For example, The appliance is intended for indoor installation and should not be installed in an open space..

When choosing, we must not forget that the measurement error can be influenced by external factors.

Sensors whose measurement error will be affected by drafts and infrared radiation must be protected from such influences. Sensors without protection from these influences must be protected artificially or installed inside structures.

The floor heating thermostat sensor is a thermal resistance with connected copper conductors. The manufacturer usually supplies sensors with short wires.

The conductors from the temperature sensor to the thermostat can be lengthened or shortened. Extension of the conductors from the temperature sensor to the regulator is allowed up to 50 m. When extending the wire, remember that the longer it is, the greater the error in temperature measurement will be.

During the installation of the temperature sensor, it must be placed in an insulated corrugation, which is usually included with the product. In addition to protection, the corrugation is also necessary for subsequent removal in the event of sensor failure.

Its use is mandatory, and if it is not included in the kit, it must be purchased separately, following the manufacturer’s recommendations.

Having chosen a warm floor with water heating, use a thermal head with an external sensor. It is designed to control heating elements and maintain the coolant temperature within specified limits in automatic mode. It is selected according to the recommendations of the heating element manufacturer.

In addition to thermal heads with remote sensors, the systems use submersible sensors. They allow you to control the temperature of the coolant.

Installation and use

Before installing thermostat sensors and a heated floor thermostat, it is important to read the heating system manufacturer’s instructions and the principle of their operation. An important condition for successful operation of the system is the correct placement of the temperature sensor. It and the wires leading to it must be placed in a groove using corrugation.

It is recommended to place the temperature sensors directly in the body of the structure at an equal distance from adjacent heating elements. The corrugated pipe should be laid with smooth turns and transitions. This will help if the sensor is broken. Replacing a damaged device if you follow these recommendations will be greatly simplified.

As a recommendation, you can listen to the advice of using a trimmer cord. Having secured the sensor and supply wires to such a fishing line, it is quite easy to insert the sensor into the corrugated pipe. Removing it with wires will be just as easy in case of breakdown.

Let's consider typical mistakes when installing floor heating sensors. The most difficult thing is when you forgot to install the sensor, and the floor screed is already finished. In this case, if you are confident in knowing the exact location of the heating elements, you can make a groove along the floor and install a sensor. The second way out of this situation is to install an external device to measure the room temperature.

It should be remembered that there are sensors that have polarity. Such sensors should be connected strictly according to the diagram specified in the instructions.

For remote sensors, when installing underfloor heating with water heating, the main condition is the location of the temperature sensor at a distance from heating elements and pipelines with coolant. Such sensors, like all others, should be protected from exposure to drafts, direct sunlight and infrared radiation.

The underfloor heating control system includes a temperature sensor and a thermostat. If the manufacturer's recommendations for selecting heating system elements are followed, then the setting is reduced to setting the desired temperature.

The control system, which includes a programmable thermostat, has a more complex setup. In the latter case, the settings may include switching time, setting the temperature of individual heating zones and other parameters.

The test consists of monitoring and maintaining the specified temperature.

Manufacturers

From the variety of manufacturers of equipment for heated floors, we will analyze the advantages of products from well-known brands. Let us note the advantages when choosing a brand of such brands:

Legrand;
Spyheat;
Tech;
Heiz.

The Legrand company has been operating for a long time and specializes in the production of electrical devices, materials, and equipment. It has established itself as a manufacturer of reliable and high-quality products.

Programmable thermostats and thermostats manufactured by Legrand have installation features. So, if desired, you can choose equipment for installation in the mounting locations of switches or sockets. In this case, you can install the equipment both on the wall and in the panel. Due to the quality and reliability, Legrand products have an increased cost.

The manufacturing company Spyheat specializes in the production of ready-made sets of heated floors and other heating systems. The advantages of the company include the fact that the company produces ready-made floor heating systems with all components. Since the company specializes in heated floors using heating cables, these products will be a budget option.

Heiz specializes in heating systems based on liquid coolants. Thermostatic heads with remote sensors are needed to stabilize the room temperature. Heiz devices are distinguished by high reliability and accuracy of temperature control. This company provides a 5-year warranty on its products. The temperature sensor is capable of maintaining temperature with an accuracy of one degree. The manufacturer guarantees the sensitivity of the temperature sensor within 0.5 degrees.

Many underfloor heating manufacturers use and recommend controllers and sensors manufactured by Tech. One of the important factors in favor of this product is that the company produces both equipment for space heating and high-power boiler houses.

Tech sensors and thermostats are popular among manufacturers of heating systems, including underfloor heating kits. The reliability and quality of Tech's products is evidenced by its partnership with many manufacturers of heating systems. It would be useful to add to the advantages of the product the absence of reviews about malfunctions of its devices.

Which is better?

This question can be answered after a thorough analysis of all the conditions for using the heating system.

The decisive parameters for choosing a system or equipment manufacturer are the design of the room. In this case, you also need to take into account the structural design of the building where the room for installing the heated floor will be located.

In order to decide on the type of heated floor, you should start from the price of electricity and coolant. The price consists of the supplier's prices for central heating or determined by the price of fuel used to heat a given room.

To subsequently select a manufacturer of equipment that will be used in the installation of heated floors, you should focus on the price-quality ratio. In this case, the customer will independently choose the set of functions that he needs.

If you are planning to install a heated floor with your own hands, then get all necessary information First of all, we need to talk about temperature sensors.

The temperature sensor is a mandatory element for optimal operation of an electric heated floor. In addition to temperature control, it helps reduce energy costs.

Product Description

A heated floor sensor is a copper wire protected by a special bulb that detects the temperature of the air or floor and then transmits this data to the thermostat. A plus is that the length of the wire can be adjusted - it is possible to reduce the wire or increase it to a maximum of 50 meters.

As the floor temperature increases, the sensor resistance becomes less. The thermostat, having received information from the temperature sensor, begins to react and either turns on or turns off the heated floor, taking into account the set temperature. Maintaining a certain temperature occurs as follows: when the desired setpoint is reached, the system turns off, and as soon as a drop of half a degree occurs, the heating starts working again.

If the sensor breaks down, it should be completely replaced. The main thing is that the replacement process occurs without errors, otherwise the system’s response to a drop in temperature deteriorates, and the interval before the floor turns on can reach 5 degrees.

Sensor selection

When choosing a heated floor sensor, which can be sold separately or complete with a thermostat, it is worth considering some factors:

Sensor type. It is necessary to select a sensor specifically for heated floors. There are other types, the readings of which are greatly influenced by drafts and direct sunlight. As a result, the device will record the temperature of the air, not the floor. There are options for measuring both;
Installation method.

There are only a few types of sensors:

The limit sensor mainly operates at maximum or minimum temperature, that is, it does not allow the surface to cool or heat up to a certain level. It is usually used when installing cable electric underfloor heating. The limit sensor is installed in the insulating pipe.
Sensors with thermostats are standard and programmable and are sold together with an underfloor heating system.

Many people believe that installing a thermostat and a heat sensor is not at all necessary. But unfortunately, in the absence of such devices, it will be impossible to control the heating level. In addition, prolonged operation of underfloor heating leads to excessive energy consumption. In addition, there are a number of floor coverings that cannot withstand overheating. For example, the temperature of carpet and laminate should not exceed 30 °C. Otherwise, the material will deform and begin to release substances harmful to human health.

A graph clearly illustrating the operation of a heated floor. As soon as the floor temperature drops to the set point, the sensor gives a signal to the thermostat, which turns on the heating. Having reached the upper temperature setpoint, the sensor-thermostat-heated floor chain is triggered again and the heating is turned off

An important point is that manufacturers of “warm floor” systems do not provide a guarantee for their products if a temperature sensor and temperature controller are not used.

How to install?

The temperature sensor is mounted next to the thermostat at a distance of 50 cm from the nearest wall. It records temperature changes, sends a signal to the thermostat, and it then adjusts the temperature of the underfloor heating. Therefore, it is very important to correctly install and connect the sensor, because the entire chain of further actions of the device is determined from it. The installation of a temperature sensor depends on the type of floor covering.

Sensor and thermostat installation diagram

The sensor for linoleum, parquet, laminate or carpet is a small cylinder that is attached to the end of the cable. It is placed in a corrugated tube with a plug at the end, which is fixed in the floor.

Sensors for hard surfaces, such as tiles, are protected by a special gel shell. It softens mechanical shocks.

The sensor can be installed in a groove or on the floor surface; it is placed strictly between the heating conductors of underfloor heating cables

The sensor for a warm floor must be installed between the heating cores. You can secure it with mounting tape. It is placed in a corrugation and sealed. One end should be near the heating core, and the other should be directed towards the thermostat. After which you can proceed to the connection.

How to connect?

There are two ways to connect a heated floor:

Straight. The thermostat and heating cable are combined.
Using a junction box. The cable runs to this box, and then to the heating circuit.

Automatic switches are installed in the electrical panel, and a distribution box is attached to the wall, to which the wires from the panel are supplied. A groove is laid from the box to the floor, two tubes will be located in it: in one there is a heating cable line, in the other there is a temperature sensor. After this, you can test the entire system by measuring the resistance. If the system works properly, it fits flooring or screed.

Connection diagram for a heated floor through a distribution box

The main reason for the failure of a “warm floor” system is a breakdown of the thermostat. For diagnostics, it is necessary to measure the resistance between the cable cores. The exact resistance value is indicated in the thermostat instructions, but usually it is in the range of 5-30 kOhm. If the resistance values differ greatly from the nameplate values, then there is no point in repairing the thermostat and it is better to completely replace it. To do this, you need to write down the model and contact a specialized organization for the sale and repair of such products. It is advisable that the sensor and thermostat be from the same manufacturer. Self-replacement is only possible if the temperature sensor can be removed. If it is built in tightly, then you will have to resort to the help of specialists.

Do not forget that working with a heated floor sensor implies compliance with safety precautions. Before proceeding with the installation and connection of the sensor and temperature controller, the apartment should be de-energized. In addition, you need to know the basic basics of electrical engineering. If you are not confident in your abilities, it is better to entrust such an important matter to a professional. Leave comments on the article and share your experience.

Heated floor sensor - instructions for installing a temperature sensor for a heated floor

Heated floor temperature sensor: principle of operation, how to choose, step-by-step instruction for installing and connecting a heated floor sensor.

How to install a heated floor temperature sensor?

Design and purpose of a temperature sensor

So, the temperature sensor for a heated floor system is a thermistor protected by a glass bulb, and also has a copper conductor about 3 meters long for connection to the thermostat. In addition to the glass bulb for tile floors, the temperature sensor itself is also protected by a gel shell. The conductor is insulated with high-quality PVC (polyvinyl chloride) to protect it from external influences and damage. The length of the conductor can be increased, and naturally, reduced, up to 50 meters, the main thing is that there is an undamaged sensor at the end of the conductor.

To easily replace it in the future, it is recommended to place this structure in a metal-plastic tube, even if the manufacturer included a plastic corrugation with a diameter of 16 mm. Metal-plastic pipe It has a smoother inner surface, so it is much easier to remove and install, as well as connect a new temperature sensor in case of failure. These types of temperature sensors are installed in hard floor coverings (under tiles or porcelain stoneware).

The principle of operation of the temperature sensor is very simple; when the temperature changes, its resistance changes, thereby giving a signal to the thermostat to turn on or off the heated floor system from 220 V, the most common network in everyday life.

Installation sequence

Let's move on directly to the installation of the heated floor and temperature sensor. First you need to determine the location of the thermostat, which will be located outside. It is most often located at a height of about 1 meter from the floor. Its mounting is similar to a regular socket.

Then you need to make grooves or grooves for laying two plastic pipes. One for the power wire leading to the heating element, the other for the electrical wiring of the sensor. The tube for the temperature sensor will be located on the floor. Such a gasket will make it possible to carry out repair work without removing the tiles, at least to replace control elements. It is not possible to completely replace the heating element if it is installed in a screed. It is important that when laying a pipe or cable corrugation there are as few bends and turns as possible. This will simplify the replacement of a failed temperature sensor in the future.

The next step is thermal insulation, it is carried out individually for different types of heating elements, for example, for a heating cable it is a damper tape or other insulation, the thickness of which is at least 1.5–2 cm. After this, the heating element is installed and secured with supply wires to the thermostat box.

Installing and connecting a heated floor temperature sensor has its own subtleties. In order to prevent solution from getting inside the tube where the sensor is located, its end on the floor is securely sealed with electrical tape or tape. It is not recommended to connect the entire system through an outlet; it is better to supply power from a circuit breaker and through a contactor (starter).

The temperature sensor should be installed at a distance of 0.5 to 1 meter from the wall on which the thermostat is installed, and also exactly in the middle between two adjacent turns of the heating cable. After installation, it is recommended to secure the temperature sensor with mounting tape or foil tape.

If a film heated floor is being laid, the temperature sensor must be installed under the heater sheet, as shown in the photo below. Please note that thermal insulation must be laid under the temperature sensor, otherwise the heating system will not be effective.

Important point! The location of the temperature sensor should be selected so that it is away from other heating sources. Otherwise, errors will occur and the warm floor will not work as it should.

The connection diagram for the heated floor temperature sensor is as follows:

Before making a screed, you need to check the functionality of the heated floor and the temperature sensor itself. As a rule, the resistance of both elements is measured. The system is considered operational if the resistance differs by no more than 10% from the passport data.

In order to assembled circuit was as safe as possible, it is recommended that in rooms where electric floor heating is carried out, it is recommended to install protective shutdown devices, which, in the event of a breakdown, will disconnect the circuit from the voltage, thereby protecting a person from falling under electrical potential. In damp areas this can be deadly.

Selecting a thermostat

I would also like to touch upon the thermostat itself, which plays a very important key role in this heating system. There are the following types of temperature controllers for heated floors:

Electromechanical. The clarity of such adjustment is approximate, so achieving a specific set temperature is quite problematic. The main advantage of such a device is its low price.
Electronic. The set value is set using touch buttons and has fairly clear settings and the ability to set the temperature limit down to one degree.
Programmable electronic. By installing such an element, you can not only regulate the temperature in the room, but also turn on the heating according to a schedule, or only when there is a person in the room.

By the way, some thermostats already have a built-in sensor, which makes it possible to control not only the temperature of the floor, but also the air in the room as a whole.

As a result, I would like to remind you about the rules for working with electrical equipment; all connection work is carried out with the power turned off. At the same time, it is necessary to ensure that no one, except the person performing this work, accidentally supplies voltage dangerous to human health and life. This is where our technology for installing a heated floor temperature sensor with your own hands ends. We hope the information provided was useful to you!

Installing a heated floor temperature sensor

How to install a heated floor temperature sensor. Diagram for connecting the temperature sensor to the network. Installation errors, which are demonstrated in the video example.

Installation and connection of a heated floor temperature sensor

A warm floor sensor is a plate or rod, the body of which is soldered from two metals. A distinctive property of such bimetallic conductors is their unique abilities - some produce electrical signals, the magnitude of which depends on the temperature of the environment in which the conductors are placed; others in different temperature conditions capable of taking a certain shape.

The features of bimetals are used by industry to create various thermostats - devices that allow you to automate the operation of electric heating systems.

Features and benefits of use

The operating principle of each of these devices forms the basis for the creation of thermostats - mechanisms that turn on and off an electrical circuit depending on the state of the sensor.

In systems that heat floors to a given temperature, sensors are used that are distinguished by many parameters. But the biggest difference between them is the operating principle.

The first type of devices are electromechanical switches that physically close and open circuit contacts. Their working element is a bimetallic curved plate, the curvature of which depends on temperature. When the circuit is disconnected, the plate bends until it touches the opposite contact. When heated, the conductor straightens and the connection is interrupted.

The advantages of a thermostat that uses an electromechanical temperature sensor are simplicity, reliability and affordable cost. Such a device is easy to replace or repair with your own hands. In addition, electromechanical sensors are universal - they depend little on the model of the heating circuit.

The disadvantage of such a device is that adjustment must be done manually. The system is not able to respond to ambient temperature.

The second type of temperature sensor for underfloor heating uses an element capable of generating an electrical signal. The signal power depends on the temperature of the medium in which the bimetallic rod is placed. The pulse is sent to the electronic thermostat unit, which regulates the supply of electricity.

The thermostat is equipped with a touch control system; its interface contains a digital screen on which information about operating parameters is displayed. Sensors of this type make it possible to set precise temperature values, and the unit maintains the required level independently.

The most complex thermostats are programmable. This class of devices provides advanced control capabilities for the temperature regime at home: with their help, you can set climate parameters - from the screen of a computer or smartphone, change them remotely using wireless communication, program the operating mode depending on the presence of people in the house, and so on.

The advantages of different thermoregulatory systems are manifested in different conditions. The use of devices with an electromechanical principle of operation is justified in separate rooms in which a person is located a short time, but visits them regularly, for example, the bathroom or kitchen. Programmers are best placed in residential areas - bedrooms and living rooms.

Types and types of devices with sensors

Temperature regulators of the electromechanical type are often overhead - they can be built into electrical distribution panels. The advantage of this scheme is that the devices can be easily connected to residual current devices.

The sensor for a warm floor can be mounted directly in the heating circuit - as part of a water or electrical cable circuit. Temperature sensor - device small size, equipped with a cable for transmitting an electrical signal - can be remote or stationary. The remote device is simply placed between the heating wires.

Installation of the device in a concrete screed is carried out using additional protective covers made from a piece of corrugated pipe. The device must be placed in such a way as to ensure access to it. If the floor heating circuit is film type, the sensor is placed in a more rigid metal-plastic housing. In this case, a rational solution during installation would be to groove the walls and floors.

When choosing systems that control space heating mechanisms, they often focus on devices that control the temperature of the atmospheric air. They allow you to create a stable microclimate in the apartment and maintain it at a given level without human intervention. Temperature regulators of this type can work with several sensors installed in different rooms.

For thermoregulation to be effective, the temperature sensor must be located at an optimal height, away from heating appliances and devices that emit heat. If possible, the device should be protected from sunlight and drafts.

Disadvantages of using atmospheric sensors:

This method of regulation is irrational if the floors are covered with linoleum or parquet - materials that should not be subject to significant thermal effects.
The heat exchange in the room must be completely balanced, otherwise the heating elements will operate in a delayed mode, for example, a sudden entry of cold air into the room will lead to an overload of an already heated circuit.

Installation of temperature sensors

The installation of a heated floor sensor is carried out taking into account safety rules. Unauthorized access to it should be limited, first of all, for young children. The recommended installation height is 1.7 m. The manufacturer supplies thermostats that are designed for hidden and open wiring. Devices of the first type must be buried in the wall when installed.

IN wall partition make a half-hole: its depth should be sufficient to install the mounting box;
From the recess downwards and in the floor screed, a channel (groove) is punched for laying cables and signal wires;
A channel for input wires is made from the seat up to the switchboard.
The signal wires and power cable are packaged in a plastic protective hose: its diameter is chosen so that the device can be removed if necessary. The bend of the tube should be sufficiently rounded (from 5 cm) - over time it should not become an obstacle to the possible advancement of the device and cable.
The sensor is placed at an equidistant distance from all thermal elements and no closer than 0.5 m from the wall partition.

Connecting a temperature sensor

Connecting a heated floor sensor is a multi-operational process, the observance of which requires care. Before connecting the sensor to the power supply, it is necessary to perform the following preparatory work:

Disconnect the network;
In the distribution box on the DIN rail, secure an additional protective disconnecting device and a circuit breaker. Externally, the devices are similar, but their operating principles are different. The first device is designed to turn off the voltage in the event of damage to the insulation and the appearance of a “breakdown” on the walls. The second is necessary to disconnect the network in case of a short circuit;
To the sensor installation location from distribution box lay a three-core cable.

How to connect a heated floor sensor? Connect the wires in the junction box as follows:

black: to the intermediate circuit breaker (bottom), from it to the RCD (bottom), then to the input circuit breaker;
light blue (blue): to the RCD (bottom), then to the block with neutral wires;
yellow with a green stripe - to the earth bus.

IN installation box you need to connect the wires to the thermostat in accordance with the diagram. The connection procedure and diagram are determined by the instructions.

All devices are equipped with a standard block with six terminals, which are marked accordingly. Each connector has a mark that indicates:

L: “phase wire” from the network;
N: “neutral” wire from the network;
L1: “phase wire” to the thermal circuit;
N1: “zero” wire to the thermal circuit;
PE: grounding bus.

Please note:

The blocks of some thermostats may not have a terminal for connecting the “ground wire”. In this case, the corresponding wires are connected directly - using a suitable connector or bolted connection;
The marking of the wires that are connected to the working elements of the heater may have a different form, for example: “L” and “N” are connected by a jumper with a resistor icon (rectangle).

Replacing the temperature sensor

Repair of electric cable-type underfloor heating is often associated with failure of the temperature sensor, thermostat or connecting devices. There are times when heater elements stop functioning. To find the cause, it is necessary to conduct a diagnosis.

Experts say that there are only two malfunctions of electrical devices: there is no contact where it should be, and there is contact where it should not be. Both faults are detected using a tester.

Before starting work, the power is disconnected from the network.

Testing begins with the input wires. Before the “dialing” begins, the thermostat housing is disassembled. In most cases, this requires prying off the adjusting gear with two screwdrivers to free access to screw connection. However, there are other options - clips or latches.

After removing the thermostat cover, access to the contact group opens.

The general connection diagram for the sensor is as follows: it is connected in series with the power and control units.

First, it is determined whether the input circuit is working. To do this, turn on the power and use a tester to check the presence of voltage between the wires connected to the “L” and “N” terminals. If there is no power signal, it means that some switch is not working, in which case the functionality of all devices that are located in the circuit upstream of the thermostat is sequentially checked. It may be necessary to repair another device - a block or a breaker.

If there is potential at the input contacts, you need to check the presence of voltage at the outputs. To do this, disconnect the wires from the thermostat (with the devices de-energized) from the thermal circuit. If, when the supply is turned on, there is no signal at the output contacts of the thermostat, it means that the sensor or control unit is broken.

Then the resistance of the sensor is checked - its value should be in the range of 5-45 kOhm. To measure this value you need an ohmmeter. The exact parameters that the sensor characteristics must correspond to are determined by the instructions. The temperature sensor cannot be repaired; if it malfunctions, it must be replaced. Installation of a new sensor is possible only with the purchase of a new thermostat. Repair of the thermostat assembly is carried out in specialized workshops.

The possibility of replacing the temperature sensor depends on compliance with the rules for its installation. If it is not possible to remove the device, the entire floor heating circuit may need to be repaired. With a careful approach to the work and patience, it is quite possible to change the sensors that regulate the temperature, even with your own hands.

Heated floor sensor: how to check, install and connect

The heated floor sensor allows you to flexibly adjust the temperature in rooms with heated floors. Its installation and connections are quite simple if you have even a little knowledge of electronics.

How to install a heated floor sensor and thermostat

A sensor for a warm floor and a thermostat allow you to control the entire heating process. It is with their help that the optimal thermal regime for the heated floor covering is created.

Installing these items is easy. We will tell you how to do this below. But first, let's briefly describe these products. This will help you make the right choice when purchasing them.

Thermostat and sensor

Sensors and thermostats for heated floors

Selecting a thermostat

To make the right purchase, you will have to take into account the features of different types of such devices.

They, in turn, are as follows:

Electronic-mechanical - similar to those installed in irons. With their help it is impossible to set a specific temperature value. By turning the wheel, its approximate value is set here, which is then maintained. The advantages of such a product are its simplicity and affordable price;

Electronic - in their principle of operation they are similar to the previous ones. The difference is that they can be used to set the exact temperature degree. In addition, their design does not use a wheel, but buttons or a touch screen;

Pictured is an electronic regulator.

Programmable - can not only maintain a given temperature, but also perform other actions. For example, they are able to turn off the heating in the absence of people. Or, turn on at a certain time and heat the room when the residents arrive. Despite his high cost Thanks to energy savings, these devices pay for themselves quite quickly.

Do not install programmable controllers in small rooms such as a bathroom or toilet.

After all, they have to be heated quickly and at unplanned times.

For such premises it is better to use electronic-mechanical devices.

Sensor selection

Typically, floor heating sensors are sold complete with thermostats. This is very convenient because it eliminates the need to independently select suitable elements.

In general, it should be noted that these devices can be internal or external. In the first case, the sensor is built into the heated surface and measures its temperature. The second sample is installed outside the coating and measures the heating of the surrounding air.

It is also possible that both types of devices are used. This is usually found in programmable devices, such as the SE 200 thermostat from the Teplolux company.

Thermostat SE 200 with two temperature sensors

If applicable electrical system heating, it would not be superfluous to install a water sensor on the floor.

If a water main breaks, it will cut off the liquid supply.

This will not only save your home from the threat of flooding, but will also prevent possible failure of the floor heating structure.

Installation of sensor and thermostat

General installation diagram

Warm electric floors can be installed in the following ways:

using a junction box - in this case the cable is connected to the regulator through a junction box;
direct connection - in this case, the heating cable is connected directly to the thermostat. We will now consider this option.

Installation of elements begins with preparing recesses in the wall for laying corrugated pipes and installing the regulator. For this we use a hammer drill.

A mounting box should be placed in the recess for installing the thermostat. If for its operation the voltage is supplied not from batteries, but from a 220V network, then you will have to connect the appropriate wires to it.

The second stage of our work is the installation of a heated floor sensor. It is carried out as follows. We take the sensor and place it in the corrugated pipe that comes with the floor.

Place the device in the pipe

In this case, we place the device near the end of the tube. On the other side there will be a connecting wire coming out.

The first end of the pipe must be tightly sealed to prevent cement mortar from getting into it.

You can do this in the following ways:

wrap with electrical tape;
flatten with pliers and attach to the floor using a self-tapping screw;
use heat shrink tubing and a hair dryer.

After this, we continue installing the heated floor sensor. I put the phone down on the floor. Moreover, we do this in such a way that the radius of its bend is at least 5 cm. The distance from the wall to the place where the sensor is located should be 50-60 cm.

Maintain the required distance

The device should be placed in the tube so that it is freely located there.

This will allow you to easily replace it if necessary.

After this, using mounting tape we secure the tube between the turns of the cable. We place it so that it is at an equidistant distance from the turns of the wire.

We place the second end of the corrugated pipe in a pre-prepared channel and bring it out into the thermostat installation box. Then, the groove with corrugation can be covered with cement mortar.

Insert the tube into the mounting block

Now you need to connect the cable and sensor leads to the thermostat. The instructions included with the kit will tell you how to do this correctly.

Typically it looks like this:

a temperature sensor is connected to terminals No. 1 and No. 2;
the heating cable leads are connected to connectors No. 3 and No. 4;
terminals No. 5 and No. 6 are used to connect home electrical wiring wires.

Upon completion of the above work, it is necessary to check the entire system for operability. To do this, turn it on for about 1 minute. If everything is in order and connected correctly, the LED on the thermostat will light up and the heating cable will become warm.

The power can now be turned off. Installation is complete. After this, you should do the pouring of the cement-sand screed with your own hands. After 28 days you can start using the underfloor heating system.

Draw the layout of the cable and sensors.

It must indicate the specific location of their location, indicating the distances from the walls.

This may be useful in the future when carrying out repair work.

Sensors for heated floors together with a thermostat will help ensure the appropriate thermal conditions in the room. In addition, they will make the process of controlling heating more convenient.

You can install an electronic-mechanical, electronic or programmable thermostat. The choice of one type or another will depend on the area of the room and the volume of tasks that must be solved. this device. In most cases, you won’t have to select a sensor, since it usually comes complete with a thermostat.

Connecting a heated floor sensor and a thermostat is not very difficult and can be done on your own. You could read about this in detail above.

Heated floor sensor: do-it-yourself installation, installation features, connections, Teplolux, photo

Heated floor sensor: do-it-yourself installation instructions, installation features, connections, Teplolux, photo

Additional heating of the house, in many cases, is a necessary measure. And varying the intensity of heat supply becomes an urgent need. To do this, a heated floor temperature sensor is installed, which will allow maintaining an optimal microclimate in the home without active human participation in the control process.

Heated floor temperature sensor - purpose and types

Monitoring the condition of the underfloor heating system, electric or water, is required during its operation. And this is not only temperature regulation, but also supervision of the operating functions of the system.

The temperature sensor for heated floors, a remote version of the product, is manufactured based on the operating principle of a thermocouple. The main design element of the device is a bimetallic rod, the electrical resistance of which changes under the influence of ambient temperature. The control device is a thermostat, equipped with a built-in thermal converter of metal resistance values into conventional thermal units.

Features of temperature sensors for heated floors

The temperature sensor for a heated floor is selected based on the following parameters:

type of top covering;
installation method;
performing additional functions.

Under tiles, porcelain stoneware or boards, it is recommended to install a heated floor sensor with a reinforced protective housing so that massive materials do not deform the device. For lightweight flooring options, carpet or laminate, plastic covers are sufficient to protect the device.

Installation of the heated floor sensor can be done in an adhesive layer or in a concrete screed. Additional functionality can be provided by signaling problems or monitoring limit temperatures.

Thus, the sensor for the heated floor thermostat performs several functions:

saves energy by maintaining the set temperature within the specified limits;
notifies about problems in the system;
possesses self-sufficiency, carrying out a given program.

Selecting a thermostat for an additional heating system

Thermostats or system control units differ not only in brands and prices, but also in functionality and installation methods.

According to installation conditions, thermostats are produced:

overhead mounted on a wall, for example – Caleo UTH-130;
in a mounting box, for installation in a wall niche flush with the partition - Thermoreg TI 950 Design.

By functionality Floor temperature control units are divided into classic and programmable thermostats. IN classic version The device assumes the use of only a floor heating sensor. Programmable home heating control devices:

The range of capabilities of programmable floor heating control devices is quite wide and these are:

stable operation of the device even with significant voltage drops;
floor temperature adjustment from +1°C to +45°C;
setting heating parameters for a day and a week;
programming up to 5 different daily routines on different days of the week;
operation of the control unit in different modes during the day: “morning”, “night”, “at home”, “absence”;
maintaining room and floor temperature within specified limits;
saving specified parameters in cases of emergency power outage;
self-learning function.

A significant role in choosing a thermostat is played by its power; it must correspond to the maximum power of the heated floor. It is not recommended to use sensors and thermostats from different manufacturers in the floor heating control system.

Installation of a temperature sensor for heated floors

For productive operation of the control system, you need to know how to install a heated floor temperature sensor so that its readings are correct. First of all, the cable with measuring instrument is placed in a strong but flexible tube with smooth inner walls. This will make it easier to remove it in case of replacement or repair. Additionally, to reduce possible injury to the sensor when removing it, the bending radius of the tube is taken to be at least 4-5 cm.

When installing heated tiled floors, a groove is cut into the concrete substrate to accommodate a tube with a sensor. It should be located between the turns of the heating cable or rods, and under no circumstances should it come into contact with the heating elements.

The temperature sensor is installed under lightweight materials by simply fixing it with construction tape. In the installation of film floors, the installation of a heated floor temperature sensor is carried out directly under the film, but with mandatory thermal insulation.

On the wall, where the tube with the temperature sensor approaches, a place for attaching the thermostat is installed. A starter or automatic circuit breaker (RCD - residual current device) is placed in front of the control unit, this is especially true for rooms with high humidity. The end of the tube, with the sensor placed in it, is tightly closed and is qualitatively insulated from penetration liquid concrete or glue. The location of the sensor and thermostat should not be exposed to air flows that distort the real heating picture.

Connecting a heated floor temperature sensor

The instructions for the thermostat always indicate how to connect the heated floor sensor, usually these are the outer terminals on the left or right side of the control unit. After connecting the cables according to the diagram, the operation of the heating system is checked. The test can be carried out by measuring the resistance at the terminals of the sensor and heating elements or by turning on the system from the minimum temperature value to the value recommended by SNIP, that is, 30°C.

Only after making sure that the assembly is safe can you begin finishing works. It is worth remembering that the heating power similar systems, can reach 6 kW. Therefore, a heated floor without a temperature sensor can become a dangerous device. This is especially true for thin coatings that are easy to heat and ignite, such as laminate or linoleum. In these cases, the question of whether it is possible to connect a heated floor without a temperature sensor should not even confront the consumer.

If malfunctions are detected in the heating floor temperature control system, it is not recommended to operate it until the heating device is fully operational.

It and the wires leading to it must be placed in a groove using corrugation.

As a recommendation, you can listen to the advice of using a trimmer cord. Having secured the sensor and supply wires to such a fishing line, it is quite easy to insert the sensor into the corrugated pipe. Removing it with wires will be just as easy in case of breakdown.

Let's look at typical mistakes when installing floor heating sensors. The most difficult thing is when you forgot to install the sensor, and the floor screed is already finished. In this case, if you are confident in knowing the exact location of the heating elements, you can make a groove along the floor and install a sensor. The second way out of this situation is to install an external device to measure the room temperature.

It should be remembered that there are sensors that have polarity. Such sensors should be connected strictly according to the diagram specified in the instructions.

The test consists of monitoring and maintaining the specified temperature.

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.

Fits under soft surfaces(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

When installing a heated floor sensor, be sure to follow all safety rules.

Installation of a heated floor sensor

Installation sequence for the heated floor sensor:

You need to make a small hole in the wall partition; the depth should be enough to install the mounting box.
It is necessary to punch a groove in the floor screed so that cables and signal wires can be laid.
From the seat up and to the switchboard you need to punch a channel for the input wires.
The signal wires and power cable are placed in a plastic protective hose: its diameter should be sufficient so that the device can be reached if necessary. Pipe bend (from 5 cm).
The temperature sensor must be located at the same distance from all thermal elements and no closer than 50 cm from the wall partition.

Fault detection methods - how to check correctly

There are two ways to check the functionality of the system:

First. It consists of visually inspecting the cable and components for damage. But it allows you to detect only visible defects, such as burnt equipment, lack of power supply in the building, broken cable and others. But this method it is not very informative, and it is not always possible to identify the reason for the lack of heating.
Second. This method makes it possible to find a breakdown using a multimeter. It allows you to find out the voltage in the network. Before checking the heated floor with a multimeter, the temperature regulator is removed from the wall and the voltage, which should be 220V, is measured using special probes. If this parameter is normal, then the cause of the malfunction lies in one of the system elements.

First of all, perform a visual inspection to make sure there is power supply to the floor. Next, they look for melted or burnt parts. If nothing can be detected, use a multimeter.

You need to measure the cable resistance and divide it by 220 to get the voltage value in the electrical network. This value reflects the amount of current passing through the system. This figure is then multiplied by the voltage to determine the power consumption. It is necessary that it corresponds to the power of the heating system, which is reflected in the passport.

When the received parameter is greater, this means that the cable insulation is damaged. If the value is less than that specified in the passport, then you need to read the instructions on how to check the heated floor for a break. In the absence of documentation for the equipment, it is considered that the power is conditionally 150 W/m2.

If the resistance of the heated floor on the multimeter is zero, then the system is disabled by a short circuit. In this case, repairing the equipment will be expensive, and finding such damage on cable field difficult. If heating occurs using infrared flooring, you need to lift the floor covering, find the damaged area and replace it.

Design and arrangement of electrical cables

A heated floor system, mounted from an electric cable or using infrared film, consists of a number of elements:

heating cable, which is a source of thermal energy;
a temperature sensor that records the degree of heating of the wires;
a thermostat responsible for connecting all the component elements into a common structure and regulating the switching on/off of the floor in accordance with the heating temperature of the cable.

The thermostat or thermostat looks like a small switch. It is intended to adjust the voltage that is supplied to the wires. Connect this device to a standard electrical network using phase and neutral wires.

The thermostat regulates the voltage automatically. It is supplied directly to the heating cable after the floor in the room has cooled. The degree of its heating is monitored by a temperature sensor, which is mounted near the wires and filled with cement mixture.

Residents independently set the temperature at which the floor surface heating system should turn on. The cable used to equip such a heating structure can be resistive and self-regulating. The latter of them independently reacts to temperature fluctuations and changes the resistance level. In turn, a resistive cable does not have such functions.

When calculating the operating parameters of the heating system, and during installation, one must not forget that the length of some types of cables must be certain. If they are shortened, then the degree of heating and current readings may change, as a result of which the wires will begin to function incorrectly and the insulation on them will begin to deteriorate.

When arranging the system, either a single two-core cable or two single-core cables are used, which are arranged in parallel. The first of them is a mesh of wires with a plug on one side. It is unacceptable to cut it and lay it in a screed in places where large pieces of furniture or equipment will be located.

In turn, single-core cables can be cut and nothing bad happens to the insulation. In the same way, infrared floors are trimmed in accordance with the area of the room that requires heating.

Installation features

Before installing the sensor, it is necessary to prepare the location for placement. You cannot embed it in a screed; replacement will be more difficult in case of breakage.

Preparing the installation site

Temperature sensors are used together with a control device in any heated floor system. In this way, it is possible to maintain a comfortable stay for a person in the room and safety for the floor covering. This requires a properly designed connection diagram.

It is advisable to install inside a corrugated pipe. When replacing, simply pull out the broken device and place a new one.

If the heated floor system is located under the laminate, then the sensor is placed without additional protection. But if you have to replace it, then the area where the sensor is located will have to be disassembled.

Installation of the device under laminate

Such devices have a soft wire, and it is difficult to place it in a corrugated pipe. The fishing line used for garden trimmers will help you complete this process. It has the rigidity to push the sensor through and, if necessary, remove it back.

Laying in corrugated pipe

There are devices that have a small step where the cable exits. It may catch on the protrusions that the corrugated pipe has during removal. For this reason, it is better to wrap this edge with electrical tape.

Installation of temperature sensors

Procedure:

A half-hole is made in the wall partition: its depth should be sufficient to install the mounting box;
From the recess downwards and in the floor screed, a channel (groove) is punched for laying cables and signal wires;
A channel for input wires is made from the seat up to the switchboard.
The signal wires and power cable are packaged in a plastic protective hose: its diameter is chosen so that the device can be removed if necessary. The bend of the tube should be sufficiently rounded (from 5 cm) - over time it should not become an obstacle to the possible advancement of the device and cable.
The sensor is placed at an equidistant distance from all thermal elements and no closer than 0.5 m from the wall partition.

Connecting a temperature sensor

Disconnect the network;
In the distribution box on the DIN rail, secure an additional protective disconnecting device and a circuit breaker. Externally, the devices are similar, but their operating principles are different. The first device is designed to turn off the voltage in the event of damage to the insulation and the appearance of a “breakdown” on the walls. The second is necessary to disconnect the network in case of a short circuit;
Lay a three-core cable from the junction box to the sensor installation site.

How to connect a heated floor sensor? Connect the wires in the junction box as follows:

black: to the intermediate circuit breaker (bottom), from it to the RCD (bottom), then to the input circuit breaker;
light blue (blue): to the RCD (bottom), then to the block with neutral wires;
yellow with a green stripe - to the earth bus.

In the wiring box you need to connect the wires to the thermostat in accordance with the diagram. The connection procedure and diagram are determined by the instructions.

All devices are equipped with a standard block with six terminals, which are marked accordingly. Each connector has a mark that indicates:

L: “phase wire” from the network;
N: “neutral” wire from the network;
L1: “phase wire” to the thermal circuit;
N1: “zero” wire to the thermal circuit;
PE: grounding bus.

Please note:

The blocks of some thermostats may not have a terminal for connecting the “ground wire”. In this case, the corresponding wires are connected directly - using a suitable connector or bolted connection;
The marking of the wires that are connected to the working elements of the heater may have a different form, for example: “L” and “N” are connected by a jumper with a resistor icon (rectangle).

Manufacturers

DEVI. This company from Denmark is characterized by high quality products, they have the latest technologies and modern materials, thanks to which it occupies a leading position in the heating equipment market.

Thermostat for heated floors Devireg 130 with sensor

Thermostat with sensor AEG FTE 5050 SN

Thermo Industri AB. This company from Sweden is one of Europe's largest manufacturers of heating equipment, in particular underfloor heating. Used in production modern technologies and materials. High quality and reliability are the main characteristics of Thermo Industri AB products.

Thermoreg TI-200 thermostat with sensor

Thus, the heated floor temperature sensor will help create comfortable conditions in the room.

Installation of fixture

The sensor is mounted in a corrugated tube.

At indoor installation the sensor is placed between the loops of the heating cable, so that the gaps to them are equal.
The device is fixed using a piece of mounting tape.
It, in turn, is attached at a distance of 0.50 m from the wall, between the wire loops closest to the sensor installation point.
Next, the device is placed in a corrugated tube. It must be carefully sealed with electrical tape to prevent solution and dust from penetrating into it.
The final stage of installation is fixing the end of the corrugated tube with the sensor on a piece of mounting tape.
The second side of the pipe with the wire is brought to the installation point of the thermostat.

Connecting the device

The photo shows a diagram of connecting devices.

After the warm floors are assembled, there are two ways to connect the sensor yourself.

Direct connection when the heating cable and thermostat are combined.
Using a junction box.

The sensor for heated floors must be connected using a separate power line from the panel. The best option, in this case, choose power wires made of copper. Their cross section should be about 2.5 mm².

In the room, another distribution box is placed on the selected wall. A cable from the electrical panel is pulled to it. A groove is made from the distribution box to the floors. Two corrugated plastic tubes for the power wires of the heating cable and the temperature sensor are placed in it.

Then the thermostat and sensor are fixed in their designated places.

The efficiency of controlling the operation of heated floors depends on the model of the temperature sensor. Therefore, his choice should be taken very seriously. In the video presented in this article you will find additional information on this topic.

Thermal sensor malfunction

Don’t rush to open the floors, first check if the temperature sensor is working

In order not to open the screed ahead of time, check the serviceability of the temperature sensor. Its cable is a two-core wire.

To test, you need to measure the resistance between the wires. Typically, resistance values are in the range of 5 - 120 kOhm, the exact value is indicated in the technical data sheet for the thermostat.

Resistance test:

the multimeter is switched to ohmmeter mode,
parameters are set,
the resistance value is measured.

If the resistance value during testing does not correspond to the passport value, then the sensor is faulty and requires replacement.

Before checking, turn off the power supply

Check the electric underfloor heating and make sure it is working properly heating system, you can by connecting the power directly to the floor wires. To do this you need:

Turn off the power to the electrical network of the apartment or house (unscrew the plugs on the electrical panel).
Connect the power wires directly to the panel, bypassing the thermostat: contact No. 1 to contact No. 3, and contact No. 2 to contact No. 4.
Turn on the electricity supply and wait half an hour for the floor to heat up.

If the system heats up with this connection, then the thermostat unit itself is faulty. If, after all the measures have been taken, the floor does not work and the cause cannot be eliminated, the problem is much deeper in the literal sense.

Installation of a heated floor temperature sensor

You can install the heated floor sensor using a protective box, which is located between the cable and the thermostat, or you can connect it directly to the thermostat. According to consumer reviews, the second option is more convenient and reliable for carrying out independent work, without the services of a specialist.

The sensor can be installed in several ways, which depend on the selected heated floor model. Therefore, in order to avoid mistakes that could lead to irreparable consequences, it is necessary to consider each option separately.

Installation of sensor with heating cable

Installation of a heated floor temperature sensor in conjunction with an electrical cable can be divided into seven main stages:

determine the location of the thermostat;
gating walls for wires;
covering the thermal insulation layer;
fastening the damper tape;
cabling;
mounting a temperature sensor and thermostat;
pouring concrete screed.

Installation of a thermostat for film heated floors

The location for the thermostat should be protected from direct sunlight and other heating elements. Also, for the safety of children and pets, its location should not be less than 0.5 - 1 meter from the floor level. The product is placed in a specially insulated box.

The cable from the sensor is inserted into the corrugated tube

A three-core electrical cable is laid to the location of the thermostat. From the floor to the box, two grooves are made in the wall, into which plastic tubes are mounted. The cable system wires will be located in one pipe, and the sensor wire in the second.

Attach the cable with the sensor to the heated floor

Having completed this work, heat-insulating and vapor-proof material is laid on the base of the room in a layer of 20 mm. Next for fixation electric cable mounting tape is attached. Before laying the heated floor heating elements on it, all wires are pulled to the thermostat.

Lead the other end of the sheathed wire to the thermostat

Having laid and secured the cables of the electrical system at a certain pitch, a concrete screed is made. But before pouring it, you need to make sure that the connecting coupling of the elements is located directly in the screed itself.

Connect to the thermostat and seal the groove with putty

Installation of the sensor with heating mats

Installing a heated floor sensor based on heating mats is much faster than with the first method. Installation is carried out in the following way:

Installation of thermostat. It is installed on the wall in the most convenient place, but not less than 30 cm from the floor. In the designated area, a hole is made with a hammer drill to install the thermostat. From the groove down the wall and along the base of the room, grooves are hollowed out for laying the ends of the heating mat and temperature sensor.
Power supply. Electrical power is supplied to the thermostat installation. In this case, the cross-section of the power line conductor must coincide with the current strength of the heating mat.
Preparing the base. The rough floor for laying the heating model must be level. To do this, all debris and dust are removed from it with a brush, and cracks are sealed with a primer.
Drawing up a diagram. On the basis of the room, markings for the location of large furniture and floor electrical equipment are marked.
Laying mats. On a pre-prepared free space mats are laid out on the floor. In order for the electrical system to occupy the entire heated area of the room, it must be cut into convenient fragments. The heating material is cut along strictly designated lines, without damaging the cables.
Sensor location. The area for the heated floor sensor should be located between the turns of the heating cable.
Fixing the electrical system wires. Through a pre-prepared groove, the installation wires of the heating mats are led out to the thermostat box.
Installing a temperature sensor. Before connecting the sensor, using special equipment it is necessary to check its resistance with heating mats. If their values coincide, the temperature sensor is placed in a special corrugated pipe, where one end will be located under the floor covering, and the other will be connected to the thermostat. The pipeline itself is laid in the niche made so that the bending radius at the wall is at least 5 cm.

To secure the installation of the sensor, a thin layer of cement mortar is laid on the groove. Then, to connect the heated floor sensor, its ends must be tinned and connected to the thermostat.

Peculiarities

The sensor for the heated floor thermostat should be selected based on the characteristics of the automation unit.

A prerequisite when choosing a temperature sensor is to follow the manufacturer's recommendations.

More complex systems of underfloor heating regulators include several sensors. An example of such a thermostat is one that measures temperature at several points. These measurement points are usually the body of the floor heater, the ambient air in the room and the temperature outside the room. The operating principle of such an automation unit is based on comparing measured temperatures, as a result of which the specified floor mode is maintained.

Systems that have more advanced methods of underfloor heating include electric heaters with liquid coolant. Such systems are considered ideal for installing heated floors.

Functions and selection of thermostat

The thermostat is also very important device, which 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

Main types of thermostats

Thermostat functions:

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

Thermostat Warmehaus TOUCHSCREEN

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.

Compact, convenient floor heating thermostat Termo+ A008 16A with weekly programming

Table. Types of thermostats.

Type	Characteristic
Electromechanical	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.
Electronic	The device works like this: it is equipped with a special element that produces a special signal. Power directly depends on the ambient temperature. 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.
Programmable	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.

Thermostat for heated floors TOP FLOOR M6.716

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.

Connection diagram mechanical thermostat for water heated floor

Varieties

The sensor can measure floor or air temperature

The main regulation of the operation of the heated floor is controlled by a thermostat (temperature regulator), it reads readings from a sensor connected to the system and regulates the heating

This is especially important for floor coverings such as laminate or linoleum.

Otherwise, if there is no temperature sensor in the system or it is faulty, this may lead to damage to the above-mentioned coatings.

First of all, they differ in the mounting location.

There are sensors installed in the floor next to the system, others measure the temperature of the air space in the room.

In addition, there are devices that are built into the thermostat.

If we consider devices intended for installation in the floor, we can divide them into 2 categories:

floor sensor for soft covering– laminate, linoleum, parquet, carpet;
device for hard surfaces – ceramic tiles, artificial or natural stone. However, it will be slightly different appearance from the previous ones. Its size will be larger and it will be packaged in a protective case to protect it from the mixture or glue.

The limiter is programmed to a certain temperature and does not allow the floor to heat the room more than necessary

In addition, there is a floor heating sensor - a limiter. It is programmed at a certain temperature and does not allow the system to cool below the specified value.

Mostly it is connected to a cable heating system, and in this case it is mounted in insulating pipe, intended directly for him.

How to calculate the number of thermostats

As has already become clear, it is possible to connect electric heating through a thermostat. Therefore, first of all, you need to figure out how many thermostats there will be. First of all, you should determine how many rooms will be heated in this way. If there are several of them, it is recommended to install an individual thermostat in each individual room. Of course, this turns out to be quite expensive, but this way you can control the temperature in each individual room.

This solution has a lot of advantages. For example, if you install an electric heated floor in a utility room, then the required temperature there will be the same, but in the living room it will be different. As a result, the likelihood that heavy loads will be placed on the power grid is completely eliminated.

Important! The presence of a thermostat in each individual room will allow you to set the program. For example, in some rooms, you can turn off the heating at night, or, conversely, turn it on.
. Installing several thermostats also entails that an individual temperature sensor is installed on each of them

This is the only way the entire system will work properly, and you will be able to maintain a comfortable temperature throughout the room. So, having familiarized ourselves with all the features of connecting an electric heated floor, let’s consider small instructions on the sequence of the entire process.

Installing several thermostats also entails that an individual temperature sensor is installed on each of them. This is the only way the entire system will work properly, and you will be able to maintain a comfortable temperature throughout the room. So, having familiarized ourselves with all the features of connecting an electric heated floor, let’s consider small instructions on the sequence of the entire process.

How to check the temperature sensor

If the floor itself is working, but the system still does not work, then the reason lies elsewhere. You can try to check the serviceability of the sensor. It is a resistor that has its own resistance, and this can also be measured using a multimeter. But the performance of the latter varies greatly depending on what the floor temperature is at the moment. For example, with a temperature reading of 5 degrees, the multimeter will show a value of 22 kOhm, and with a temperature reading of 40 degrees – only 6 kOhm. In general, the indicator should correspond to the factory resistance. If it differs from the indicated value by more than 5 kOhm or is equal to 0, then the sensor does not work and needs to be changed.

Warm floor sensor

On a note! Modern thermostats equipped with a display often indicate a sensor malfunction on their own.

Manufacturers

Legrand;
Spyheat;
Tech;
Heiz.

Precautionary measures

When working with any electrical equipment, installation work must be carried out carefully, connections must be made reliably, wiring must be designed for the power consumed by the heated floor. For safety, it is advisable to connect the power circuit to an individual RCD.

It should be remembered that thermostats do not tolerate high humidity and water ingress, therefore, when installing a heated floor in a bathroom, the control unit should be installed outside this room.

The serviceability of all parts must be checked before installation. Filling the screed and laying the finishing coating must be carried out carefully. If there is no mechanical damage, the heating cable will last a long time.

Types of temperature sensors for heated floors

Modern cable underfloor heating systems, as a rule, include a sensor included

However, in cases where the heating design is made independently, they do not always remember the important function of the temperature sensor and may simply forget to purchase it. In the future, this will lead to inflated bills for consumed electricity, since the system will operate without periodic outages

Temperature sensors, as well as thermostats, exist in several types:

Some thermostats work in combination with two sensors. Such a system shows both the external temperature and the condition of the base;
Limit sensors are also in demand, which prevent the temperature on the floor surface from falling below a set level;
Some samples of temperature sensors are additionally equipped with an alarm system that notifies home owners about possible problems in the system.

For water floors, a thermal head with a remote sensor is used, which acts as a regulator of the heating battery and serves to automatically maintain the selected coolant temperature. The thermostatic head is selected taking into account the design features of the pipeline of the installed heating system.

Installation work

Installation of a heated floor temperature sensor can be done in two ways:

using a special box between the cable and the thermostat;
directly from the heating cable to the thermostat.

In practice, the second option is more often used.

Also, the nuances of installing the device depend on the type of electric heating system being created: the use of a heating cable, mats or film floor.

The work of installing a floor temperature sensor for a heating cable can be divided into the following stages:

determining the location of the thermostat;
cutting two ditches on the wall;
laying thermal insulation material;
fastening the mounting tape;
installation of heating cable;
installation of sensor and thermostat;
pouring concrete screed.

The thermostat is usually located at a height of 0.5-1 m from the floor level. It fits on the wall in regular box designed for sockets. A three-core electrical wire is connected to the location of the box under the thermostat.

Using a hammer drill, two grooves are created leading from the floor to the thermostat box. Two plastic tubes will be attached to them. One will carry the power wires from the heating cable, the second will carry the electrical wire for the sensor.

The length of the tube for the heating cable will be equal to the distance from the thermostat to the floor. For the sensor, the tube is laid with a margin of approximately 1 m. It will be located on the floor. This is done so that the wire with the sensor can be pulled out through the tube if it breaks.

Creating thermal insulation involves sticking damper tape and laying insulation minimum thickness 2 cm. After which a special mounting tape is attached to the heat-insulating material. It is designed to fix the heating cable. The fastening step of the tape for laying the cable “snake” is 50 cm.

Before installing the heating cable, all wires are pulled to the thermostat box. The coupling for connecting the elements must be in the poured screed. The lines of the installed floor heating cable do not intersect.

Having finished laying the cable, you should work on the floor temperature sensor. He:

placed in a plastic tube;
is pulled between the heating cable.

The distance from the cable should be in the range from 0.5 to 1 m. To prevent the solution from entering, the end of the tube is sealed with electrical tape.

Before creating a concrete screed, the resistance of the heated floor temperature sensor must be measured. This is how the quality of the work performed is checked. The resistance indicator should not deviate by more than 10% from the product manufacturer’s specifications.

Next, the cement mortar is poured. After it has set, the functionality of the electric floor is checked. The heating cable is connected to the network for a short time. Usually the green light on the thermostat lights up and the cable starts to heat up.

Some nuances of installing the sensor when laying mats and film floors

The principle of installing an electric floor temperature sensor when laying heating mats and film covering has a number of distinctive features.

In particular, when installing a floor using heating mats, the groove for the sensor is carried out not only on the wall, but also on the floor. This is explained by reducing the thickness of the floor to 1.5 cm. The protective plastic tube where the sensor is placed will be located slightly below the mat.

When creating a warm film floor, the sensor can be installed in two ways:

using a pipe in the floor (it is necessary to make a groove);
placing the device directly on the film surface.

Most universal devices are NTC floor temperature sensors. They can function like:

digital temperature controllers with manual control;
devices with software control.

Installing a temperature sensor and connecting it to the thermostat

Before installing the floor heating system sensor, it is necessary to place it in an insulated corrugated tube, which is usually included with the product. In the area where the sensor connects to the wire, it is advisable to wrap several layers of ordinary electrical tape so that the device can be easily removed if necessary.

The trimmer line, which is only 3 mm thick, has very good elasticity, will help you easily insert the sensor into the tube. Using electrical tape, the end of the wire must be connected to the fishing line, and then inserted into the corrugation.

Before connecting the temperature sensor, it must be positioned in accordance with the rules. The device is placed in the middle between the heating elements so that the sensor is parallel to them. It is recommended to close the corrugation with a plastic stopper. This will help prevent the screed solution from getting into it. If infrared film is used in the heating system, the sensor must be mounted on the reverse side of the product.

The thermostat is installed only after the screed has hardened. All heating elements of the system, a temperature sensor, as well as power wires are connected to it. It is recommended to place the regulator as close as possible to the heating system itself in order to minimize the distance from it to the temperature sensor.

Experts advise installing a temperature control device at a height of no more than 30-40 cm from the level of the floor covering.

When purchasing a thermostat, you should choose a product with a power that matches the power of the heating elements of the underfloor heating system. IN maximum mode it should not exceed permissible load to the heating cable.

When connecting wiring to the terminals, you must remember to comply with the phases. For most thermostatic devices, the neutral zero is designated as "N", and the phases are letters "F" And "L". In addition, phases can also be determined by the color of the wires. Zero is usually blue. As for the phase, the wire can be either white, black or brown.

After the warm floor sensor and heating elements of the system are connected, it is recommended to test the thermostat. To do this you need:

set the lowest temperature on the device;
supply electrical power;
turn on the heating using the toggle switch;
smoothly change the temperature several times, paying attention to the presence of a click, which should be heard when the heating elements are turned on;
check how well the floor covering heats up.

If we talk about connecting a water heating system to a thermostat, it is not mandatory. However, using such a device will help save on coolant, since it can be used to control the flow of water. The same as in the case with electric heating, the sensor for a warm floor can be simple or programmable. It is usually mounted at a height of one meter near the location of the thermostat. In this case, the function of the temperature sensor is determining air temperature in a heated room. Therefore, there should be no additional heat sources near it.

Design and purpose of a temperature sensor

To easily replace it in the future, it is recommended to place this structure in a metal-plastic tube, even if the manufacturer included a plastic corrugation with a diameter of 16 mm. The metal-plastic pipe has a smoother inner surface, so it is much easier to remove and install, as well as connect a new temperature sensor in case of failure. These types of temperature sensors are installed in hard floor coverings (under tiles or porcelain stoneware).

Installation of sensors for heated floors

Warm floors are responsible for creating comfortable atmosphere, which has a beneficial effect on well-being. The recommended temperature at the feet is 25°C, and in the head area – 21. It is this mode, which is optimal according to experts, that creates rising heat from the heated floor.

An integral attribute is a thermostat with a temperature sensor built into it - a device at the end of the cable that monitors the degree of heating. When the set values are reached, the heated floor automatically turns off, and when the indicator drops by half a degree, the system starts working again. This ensures a constant climate in the room. In addition, energy consumption is significantly reduced.

How to ring a warm electric floor

Before ringing the heated floor with a multimeter, it is set to the sound signal icon located next to the ohmmeter scale. When the probes touch each other, a sound is heard, indicating that the circuit is closed. If you simultaneously touch the conductors of the heated floor with the probes, a buzzer should appear.

When it is missing or interrupted, this indicates a tear in the vein. After you have managed to figure out how to ring a warm floor, you need to do a similar procedure with a temperature sensor. If the sensor resistance is missing or does not match the specifications, it is clear that it is faulty.

Selecting a thermostat for an additional heating system

Thermostats or system control units differ not only in brands and prices, but also in functionality and installation methods.

According to installation conditions, thermostats are produced:

overhead mounted on a wall, for example – Caleo UTH-130;
in a mounting box, for installation in a wall niche flush with the partition - Thermoreg TI 950 Design.

Based on functionality, floor temperature control units are divided into classic and programmable thermostats. The classic version of the device assumes the use of only a floor heating sensor. Programmable home heating control devices:

can be with one or more heated floor temperature sensors - Caleo 330PS;
You can also use the installation of a heated floor temperature sensor and built-in or free-standing air temperature sensors - Devireg D-532.

The range of capabilities of programmable floor heating control devices is quite wide and these are:

stable operation of the device even with significant voltage drops;
floor temperature adjustment from +1°C to +45°C;
setting heating parameters for a day and a week;
programming up to 5 different daily routines on different days of the week;
operation of the control unit in different modes during the day: “morning”, “night”, “at home”, “absence”;
maintaining room and floor temperature within specified limits;
saving specified parameters in cases of emergency power outage;
self-learning function.

Connecting the thermostat to the mains

Connection can be made in two ways:

Connect through an outlet using a plug.
Pass a three-core wire in a pre-prepared groove from the thermostat to the outlet.

In order to connect the regulator in the second way, you need to install it under the socket. To do this, a hole is made for a regular socket box. Using a crown, a hole is drilled into which the box is installed. There are also special boxes in plasterboard; thermostats can also be installed in these boxes.

When connecting the temperature controller, you should pay attention to the contacts located on the back of the device; they are marked with three letters that indicate different wire colors:

L – phase, brown or red wire;
N – zero, blue or blue wire;
PE – grounding, yellow-green or yellow wire.

Usually the cable comes complete with a thermostat, the wire length is up to 3 meters. It is connected to a temperature controller and a temperature sensor.

For the entire circuit to work, you must connect a thermostat with a temperature sensor and a heated floor. Before connecting, make a groove from the temperature regulator to the floor and lay the wires using the diagram that is in the instructions. We talked about how to perform wall gating in a separate article.

So, you can connect the thermostat to the heated floor as follows:

Connect the temperature sensor to terminal numbers 1 and 2 of the thermostat.
The wire from the network must be connected to terminal numbers 5 and 6. The phase is placed on the fifth, and zero on the sixth.
The heating cable is connected to terminals 3 and 4.

Please note that the markings on the thermostat may be different and, accordingly, the connection diagram will be different (for example, the power cable will be connected to terminals 1 and 2).

It is also important to understand that not all houses have the opportunity to connect the regulator to a three-wire network, because many old houses do not have grounding. There is also a single-core or two-core heated floor, this also affects the installation method

Connection diagram for a heated floor thermostat with grounding and without a grounding wire:

The temperature sensor is installed under tiles or other floor coverings, so it should be installed in such a way that in the event of a malfunction it can be removed without damaging the floor covering. Despite simple diagram When connecting the thermostat, it is important to carefully read the instructions, because if the connection is incorrect, the heated floor will not work.

The video below clearly shows how to install a temperature controller and connect it to the network with your own hands:

This is the technology used to install a heated floor thermostat in the bathroom and other rooms. Now you know at what height to install and how to correctly connect the wires from the heating system and temperature sensor to the regulator.

Errors when installing heated floors
Installing a fan in the bathroom

Three main reasons for underfloor heating failure

1. Floor temperature sensor. Each thermostat comes with a floor temperature sensor, which is installed in a corrugated tube and mounted in the wall and floor in a certain way, under a certain bend. So that it can be replaced in the future. In a heated floor system, the floor temperature sensor is " consumables" Sooner or later it will need to be replaced. This sensor can work for you for 10-15 years, but it can fail after 3-5 months

This is why it is very important to install it CORRECTLY to avoid further problems.

Bricked sensor

How to check the serviceability of the heated floor sensor?
To check the serviceability of the floor temperature sensor, you need to remove the front panel. Unscrew the thermostat installation block and check the resistance of the floor temperature sensor with a multimeter. Each sensor has a factory resistance statement. Your sensor value should match it. If the resistance differs by more than 5 kOhm, or is early 0, then the sensor is faulty and requires replacement.

2. Thermostat. More often, either the relay or the capacitor fails. You can check the functionality of the thermostat by switching to heating mode by applying power to the terminals of the heated floor. The average cost of repairs is about 3,000 rubles. In many cases, it is more advisable to purchase a new thermostat from the same manufacturer. Since the thermostat must be from the same company as the sensor installed in the floor. (However, the DeviTouch thermostat works with floor temperature sensors from manufacturers Teplolux, Eberle, Ensto, Fenix, Oj Electronics, Raychem, etc.)

3. Heating cable (mat). In 95% of cases, the cable heating system fails due to unqualified installation. The most vulnerable part of the heating cable is the coupling. During installation, it is necessary to observe all the rules for laying pitch, cable bending, and the location of the coupling. Also, when purchasing equipment, you need to understand that the cable will be under the tiles. You install heated floors for at least 10-15 years. There is no need to chase cheapness, since a cheap cable is not reliable and may soon fail.

How to check the serviceability of the heating cable?

Each cable has its own resistance. It is necessary to check the resistance value 3 times. Before installation. After installing the heated floor. After filling with screed or tile adhesive. If the cable resistance differs significantly from the rated values, or is equal to zero. This means the cable may have failed. In this case, it is necessary to check the cable with a megger to check the insulation resistance of the heating cores and the shielding braid.

Repair of electric heated floor.

Equipment for searching for cliffs.

Repairing a heating cable (mat) begins with searching for a broken cable or a damaged coupling.
Then the tile in this place is opened and a repair coupling is installed. After this, the resistance is checked and
checking with a megger, as well as a test connection.

In conclusion I would like to say: Each heating system, including heated floors, must be calculated and selected according to the heat loss conditions of your room. Despite its apparent simplicity, there are many nuances that must be taken into account when choosing a heated floor and thermostat and further installation.

We offer a service for on-site diagnostics of heated floors. Diagnostics will include checking the functionality of your thermostat, floor temperature sensor, and heating cable (mat). Cost: 2000 rubles.

Sensors and thermostats for heated floors

Selecting a thermostat

To make the right purchase, you will have to take into account the features of different types of such devices.

They, in turn, are as follows:

Electronic-mechanical - similar to those installed in irons. With their help it is impossible to set a specific temperature value. By turning the wheel, its approximate value is set here, which is then maintained. The advantages of such a product are its simplicity and affordable price;

Electronic-mechanical version

Electronic - in their principle of operation they are similar to the previous ones. The difference is that they can be used to set the exact temperature degree. In addition, their design does not use a wheel, but buttons or a touch screen;

Pictured is an electronic regulator.

Programmable - can not only maintain a given temperature, but also perform other actions. For example, they are able to turn off the heating in the absence of people. Or, turn on at a certain time and heat the room when the residents arrive. Despite their high cost, thanks to energy savings, these devices pay for themselves quite quickly.

Programmable thermostat

Advice!
Do not install programmable controls in small rooms such as a bathroom or closet.
After all, they have to be heated quickly and at unplanned times.
For such premises it is better to use electronic-mechanical devices.

Sensor selection

Typically, floor heating sensors are sold complete with thermostats. This is very convenient because it eliminates the need to independently select suitable elements.

It is also possible that both types of devices are used. This is usually found in programmable devices, such as the SE 200 thermostat from the Teplolux company.

Thermostat SE 200 with two temperature sensors

Advice!
If an electric heating system is used, it would be a good idea to install a water sensor on the floor.
If a water main breaks, it will cut off the liquid supply.
This will not only save your home from the threat of flooding, but will also prevent possible failure of the floor heating structure.

How to choose

When choosing temperature controller sensors, you should be guided by the recommendations of thermostat manufacturers

In addition, when choosing sensors, you should pay attention to its purpose. So, if it is designed to measure the floor temperature, it cannot be connected instead of a temperature sensor to measure the air temperature in the room, and vice versa

You also need to take into account the features of the sensor. For example, The appliance is intended for indoor installation and should not be installed in an open space..

When choosing, we must not forget that the measurement error can be influenced by external factors.

The floor heating thermostat sensor is a thermal resistance with connected copper conductors. The manufacturer usually supplies sensors with short wires.

Its use is mandatory, and if it is not included in the kit, it must be purchased separately, following the manufacturer’s recommendations.

In addition to thermal heads with remote sensors, the systems use submersible sensors. They allow you to control the temperature of the coolant.

An element such as a heated floor sensor plays vital role during the operation of the entire system, its stability and durability. Incorrect installation threatens to decline shared 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), 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 the floor covering has 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 inlet through hole of the 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 the cyclical heating or cooling of the 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. It is in this case that the previously mentioned internal broach will be needed. The sensor itself must protrude beyond flexible tube by a few centimeters. Upper part 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 necessary to protect the internal space from penetration of concrete solution or putty, which will make it possible to replace 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 begin subsequent masonry work, there is no need to maintain 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 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. Minimum distance The sensor distance 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 the 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, by and large, is the most common and easily implemented. 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 the distribution panel, and also to install an automatic switch on the line, which breaks the circuit when short circuits and overloads occur on the 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 power line from the common shield 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 that 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.