Minimum spacing for laying underfloor heating cables

Attaching the cable (or thermal mat)

Now that the surface has been fully prepared, you need to fix the heating element. If you are using cable, attach it with mounting tape, as shown on

The distance between the coils must be equal over the entire area, otherwise the electric heating of the floor will not be uniform. Heating mats are easier to install.к. the distance between the coils is maintained along the entire length. All you need to do is to lay out the material according to the diagram and to connect it correctly to the thermostat.

When the installation of electric underfloor heating is complete, be sure to check the correctness of the connection, measuring the resistance multimeter. The resulting value should be the same as the value you measured before installation.

Installing and laying electric underfloor heating.

Before installing electric underfloor heating you need to decide on the choice of heating cable or mat, and focus not on the total area of the room, but on the net area not occupied by furniture. Carefully select the heating cable, the most important technical parameter of heating cables is the specific heat.

Before installing electric underfloor heating, you need to do the following:

  • Measure and mark the free space that is not occupied by furniture and appliances;
  • To measure and mark 5-10 centimeters distance from the walls and furniture;
  • Choose a section or mat for the marked area;
  • The area of the heating elements must not be larger than the designated area;
  • It is allowed to install underfloor heating under furniture when the height of the feet is not less than 15 cm;
  • It is necessary to calculate the pitch of the cable.

The installation pitch of the cable is calculated using the formula: Pitch (cm) = (100 S) / L. where S is the area on which the floor heating is laid, and L is the length of the cable section. Minimum installation pitch 8 cm.

Installing cable floor heating

High heat output, ease of operation and accessibility contribute to the fact that the cable floor heating is increasingly used for heating apartments and cottages. Cable heating system has a very high efficiency, the electric current is almost completely converted into heat energy.

Installing underfloor heating under tiles is not an easy process in itself. But if everything is done carefully, to calculate in advance, it is quite feasible for a home craftsman. Before you buy floor heating equipment, you must determine the wattage that you will need. Then it is only necessary to strictly follow the instructions.

What power heating mats need:

-180-200 W per 1 sq.m. meter for a room located on the first floor, where the equipment will be the main source of heating, or it is a room with increased heat losses (vestibules, balconies, loggias);

-140-160 W per square meter. meter for rooms on the second floor and above, or on floors with a good insulating layer;

UNDER FLOOR HEATING WIRING. 2ND FIX. A & R ELECTRICS #ELECTRICIANLIFE

-130 W per 1 sq. that is enough if the heating mats are used as an additional heat source.

To calculate the heating cable, you additionally need to use the formula: L = S×Ps/Pk, here L. required length, S. The area of the room (or several, if a single circuit is used), Ps. power requirement, Pk. is the heat output of the selected model of cable floor.

Before proceeding to the installation, you should carefully read the instructions, once again make sure that the size of the heating mat corresponds to the area of the room. It is important to correlate the electrical characteristics of the equipment and the network that is connected to the room.

Heating cable for underfloor heating

If you have decided to install floor heating in a building under construction which is not yet screed laid, we recommend using Deviflex 18T or Veria Flexicable-20 electric heating cable. It is installed into a 3-5 cm thick cement-sand or concrete screed., which ensures uniform heating and maintains a comfortable floor temperature.

You can buy a heating cable not only for comfort floor heating, but also as a complete heating, when the DEVI system is the only source of heat in the room. Cable heating (“Full heating”) compensates heat losses and ensures a constant room temperature.

Calculation of underfloor heating

Step of laying heating cable. the distance between its lines.

For the underfloor heating system, cold spots (heat zebra) may appear on the floor surface as the distance between the cable lines increases!

The greater the pitch, the thicker the layer of concrete over the cable must be to ensure an even temperature distribution over the entire floor surface.

We do not recommend to exceed the cable spacing for underfloor heating systems over 12.5 cm with the minimum allowable screed thickness of 3 cm for standard cement-sand mortar.

For thin screed we recommend using the DTIP-10 or DTIE-10 cable with a maximum laying pitch of 10 cm.

When calculating the pitch of the cable, keep in mind the minimum allowable power values for heating cable systems!

When installing Deviflex heating cables, we recommend the use of Devifast installation tape made in such a way that the cable spacing can be selected in 2.5-cm intervals (2.5 cm, 5 cm, 7.5 cm, 10 cm, 12.5 cm, 15 cm, 17.5 cm etc).д.).

Two formulas can be used to calculate the pitch of the heating cable:

in total cable length: h = (S x 100) / L (cm)

minimum, spacing, laying, underfloor, heating

where S. laying area m², L. Heating cable length m.

total specific power: h = (Pn x 100) / Pd (cm)

where Pnr. Cable watt/m, W/m. calculated power density W/m².

The cable Deviflex DTIP-18, 535 W, 29 m is to be installed in a bathroom, the free area (laying area) of which is 3 m2.

Calculation of laying pitch: (3m² x 100cm/m) / 29m = 10.35cm

However, using Devifast mounting tape, we can install the heating cable in the bathroom in 10 cm increments, t.е. the installation will require a slight adjustment of the cable installation area.

We use the DTIP-10 heating cable (10W/m at 230V) in the process of reconstruction of a floor with a thin screed.

We choose the installed wattage of 120 W/m2.

Then the calculation of the laying pitch will be: (10W/m x 100cm/m) / 120W/m² = 8.3 cm

When calculating the laying step is not always a multiple of the pins on the Devifast installation tape.

In this case we recommend to lay the heating cable with a variable spacing. The table below shows the ratio of laying pitch to wattage per 1 m²:

Variable laying spacing. E. g. 5. 7,5 = (6,25) means that one line of cable is laid every 5 cm and the next line every 7,5 cm. Then in 5 cm steps again and so on.д.

Calculation of the Devifast mounting tape

To calculate the length of the Devifast mounting tape, the distance between the strips of tape must be determined. For concrete floors where the cable is covered with 3 cm or more of screed and the cable spacing is more than 10 cm, the distance between the strips of Devifast mounting tape must not exceed 50 cm.

For floors with minimum screed, where the cable is covered with a layer of special mastic 1. 2 cm and the cable spacing. 10 cm or less, the maximum distance between the strips of Devifast mounting tape must not exceed 25 cm.

Greater distances between stripes of tape are also possible. The main condition is the inadmissibility of displacement of laid lines of heating cable during pouring.

Formula for calculating the length of the installation tape: Total installation area (m²) x 100(cm/m) / line spacing(cm) Lw(m)

where Lw. the length of the wall parallel to the installation tape (m).

Total installation area: 1 m x 2 m = 2 m2. If we install the Devifast installation tape parallel to a 1 m wall (fig.1), if the distance between the tape lines is 50 cm, the required length is calculated as follows: 2м² x 100 cm / 50 cm 1 m = 5 m.

If we install the Devifast TM parallel to the wall in a 2 m length (fig.2), if the distance between the tape lines is 50 cm, the required length is calculated as follows: 2м ² x 100cm / 50cm 2m = 6m.

As you can see from this example, depending on the installation method, the length of the Devifast TM installation tape varies, while the room area and the distance between the tape lines remain the same.

DEVI floor heating. Heating cable laying pitch.

The step of laying the heating cable is the distance between its lines.For underfloor heating systems, increasing the distance between the cable lines can lead to cold spots (“heat zebra”) on the floor surface!The greater the installation pitch, the thicker must be the layer of concrete over the cable to ensure uniform temperature distribution across the entire floor surface.It is not recommended for underfloor heating systems to exceed a cable laying spacing of 12.5 cm with a minimum screed thickness of 3 cm for conventional cement-sand mortar.For thin screed it is recommended to use DTIP-10 or DTIE-10 cable with the spacing not exceeding 10 cm.When calculating the cable spacing, remember the minimum allowable wattage values for heating cable systems!When installing Deviflex TM heating cables it is convenient to use Devifast TM mounting tape. made in such a way that the distance between coils of cable can be chosen in intervals of 2.5 cm (2.5 cm, 5 cm, 7.5 cm, 10 cm, 12.5 cm, 15 cm, 17.5 cm etc).д.).Two formulas can be used to calculate the pitch distance of the heating cable:

h = Sy : Lk (m), where Sy. laying area, m 2; Lк. the length of the heating cable, m.

According to the total specific power

h = Watt : Ore (m), where Watt. is the total wattage of the cable, W/m; Ore. Rated power density, m 2.

Deviflex TM DTIP-18, 535 W, 29 m must be installed in a bathroom with a free area (laying area) of 3 m 2.

However, using the Devifast TM installation tape. we can install the heating cable in the bathroom in 10 cm increments, t.е. a small adjustment of the installation area will be necessary during installation.

While reconstructing the floor with thin screed, we use the heating cable DTIP-10 (10 W/m at 230 V).

We choose the installed power of 120 W/m 2. Then the calculation of the laying pitch will be:

When calculating, the pitch is not always a multiple of the Devifast TM mounting tape.In this case it is recommended to lay the heating cable in variable pitch. The table shows the ratio between pitch and wattage per 1 m 2 :

Installation pitch, cm. Power (W/m 2) (DSIG-20) Power (W/m 2 )(DTIP-18) Power (W/m 2) (DTIP-10)
W/m(220V) W/m(230 V) W/m(220 V) W/m(230 V) W/m(220 V) W/m(230 V)
18,5 20 16,4 18 9,1 10
5 370 400 330 360 182 200
5. 7,5 = (6,25) 295 320 265 290 146 160
7,5 247 265 220 240 121 133
7,5. 10 = (8,75) 210 230 190 205 104 114
10 185 200 165 180 91 100
10. 12,5 = (11,25) 165 178 145 160 81 89
12,5 148 160 130 145 73 80
12,5. 15 = (13,75) 135 145 120 130 66 73
15 123 133 110 120 61 67
15. 17,5 = (16,25) 115 123 100 110
17,5 106 95 100 100
17,5. 20 = (18,75) 100 107 87 95
20 93 100 82 90

Variable laying pitch. For example, 5. 7.5 = (6.25) means that one line of cable is laid 5 cm apart and the next line. in 7.5 cm. Then. in 5 cm again and t. д.

What is underfloor heating

This is a special system designed to maintain the floor temperature in the necessary ranges. Underfloor heating allows you to maintain an optimal temperature in the house or apartment, regardless of the time of year. Most often used water and electric heating systems. The design of the water floor consists of a pipeline through which water flows, and a special device that heats the liquid and distributes it throughout the system. Tubes are installed in the concrete screed.

A few words about the economy

If we consider underfloor heating from an economic point of view, there are only a few cases where it is advantageous. First of all, when installing an electrical system, heating mats must be chosen according to the size of the floor surface to be heated. Using too big mats will lead to overconsumption of electricity. Provided that the electric system will be equipped with a temperature regulator, it is safe to say that the cost of central heating will be equal to the cost of heating with underfloor heating. But the house must be well insulated and equipped with high-quality plastic windows.

How beneficial is an electric underfloor heating

Pay attention to! The operation of water underfloor heating is much cheaper for the owners than the electric system, so they are often used as the main source of heat in the house.

Advantages and disadvantages

  • uniform distribution of heat over the area of the room;
  • the system does not create any problems for people who suffer from asthma or allergies;
  • generated energy is absolutely safe;
  • easy installation and operation of the floor heating;
  • The installed system does not take up useful space in the house;
  • there are no convection currents when using underfloor heating system.
  • the high cost of electricity in comparison with other fuels
  • availability of thermostats and their skilful use is a prerequisite for the operation of underfloor heating;
  • it is necessary to dismantle the flooring in case of a malfunction;
  • the system is not used in large industrial premises (their heating is not profitable from the economic point of view).

The disadvantages of underfloor heating are few, which is why this system and enjoys great popularity and the modern construction market offers several types of such systems.

What affects the energy consumption of underfloor heating

Electric underfloor heating: Laying process

If you are planning to install in a house or apartment where there is already heating, the heating will be additional, and there is no need to purchase a very powerful system. If the heating is basic, it is likely to be done in a rather thick concrete screed (from 5 cm) and the power of the cable will be high. But as a rule, such systems are used more often in manufacturing facilities or freestanding buildings that are not connected to the central heating.

Once you have decided on the heating purpose, you can now move on to the laying and calculation options. For supplementary heating, infrared film or heating mat are used in most cases; for basic heating, cables are preferred. The power of the system is chosen approximately according to the following parameters: bedroom. 100-150 W/m2, kitchen and corridor. 150 W/m2, balcony. 200 W/m2, bathroom. 150-180 W/m2.

The next task is to plan the floor heating installation and calculate the cable spacing.

The distance from the walls when laying should be at least 5-10 cm. This is to ensure that the cable gives heat directly into the space of the room and does not overheat. And when installing, for example, interior doors, you will not worry about the integrity of the underfloor heating. Indentation should also be made from the location of floor plumbing, heavy furniture and large household appliances (refrigerator, washing machine).

The step of laying the cable is calculated by the formula: 100 is multiplied by S and the resulting value is divided by L, where S. the area on which the underfloor heating is laid, and L. is the length of the cable section. The minimum pitch is 8 cm. The power is calculated based on the heating area and the value per square meter. For example, the area of the room is 10 m2, and the required power per m2. 100 W. The power of the cable will be 1300 W and the cable length will be 20 meters.

The laying process varies depending on the method. If the installation is done in a screed, either a cable or a heating mat is suitable. If on a screed under a carpet, a tile or a laminate, it is possible to use an infra-red film or, again, a heating mat.

Laying in the screed is as follows:

    Firstly the floor surface is prepared. Cleaned from dust and debris and coated with primer (optional). If necessary, a preparatory casting is made. Next, thermal insulation is laid to minimize heat loss from the floor. If you do not do this, then, firstly, the system efficiency will decrease, and secondly, the ceiling of the neighbor downstairs will be heated.

After the preparatory phase you can proceed directly to the laying of mats (if just a cable is laid, additional cement-sand screed shall be made under it).

Before laying the cable (heating mat) it is necessary, without uncoiling, to check its efficiency. measure the resistance. Allowable deviation is ± 5-10%. The same should be done immediately after laying and before casting the screed.

Installation begins with the attachment of the beginning of the cable and the coupling with a mounting tape. Then it is necessary to check the pre-planned laying, observing its order and pitch. In the areas of cable bends, if the cable is not fixed to the grid, you must maintain a radius of not less than 5 cm. When installing the cable yourself, clips and mounting tape are used to secure it (the cable is already fixed to the mats), and you must make sure that the cable lines do not cross or touch. Do not forget about the indentation.

Then the screed itself is poured. It should be at least 3 cm above the cable. If the floor heating is done under a laminate, carpet, parquet or linoleum, it is necessary to lay a layer of sound insulation.

The plaster hardens over a fairly long period of time. for about a month. Do not turn on the floor to speed up the process, because it not only does not help, but on the contrary, will cause a threat of failure of the system. After laying the screed it is also necessary to check the functionality of the cable, and only then proceed to connect it.

When installing heating mats on the screed under the tile, the process is slightly different. Firstly, instead of screed, tile adhesive is used, and secondly, the thickness of its layer will be much less than the thickness of the screed. To fix the mat on the floor surface before laying tiles, you can use double-sided adhesive tape. If it is necessary to change the shape of the mat, a notch is made on it, allowing it to rotate 180 degrees. However, violating the integrity of the cable is strictly prohibited.

The advantage of this method of laying is the possibility of installing the system on the old layer of tile, t.е. There is no need to remove the layer of tiles, which you had laid before. Also an advantage is the ability to use the floor after just one week (or even less, depending on how quickly the adhesive dries).

Installation of infrared film is as follows:

    First of all the standard cleaning of the surface and the laying of thermal insulation. Do not use aluminium foil or any other material that contains aluminium for this purpose. In addition, it is forbidden to use metal mounting mesh when laying tiles.

Installation options for electric underfloor heating

The process of laying underfloor heating varies depending on the chosen method of installation. If you plan to lay in the screed, it is suitable either a heating cable or heating mat. If laying is planned to perform on a screed under a carpet, a tile or a laminate, it is possible to use an infrared film or, again, a heating mat.

The table below shows the basic structure of the electric floor heating system for different floor and subfloor configurations.

Electric underfloor heating under tile on a concrete subfloor. 1 Floor covering, glazed tiles; 2 Tile adhesive or tile compound; 3 Self-leveling floor mix; 4 Heating cable or heating mat; 5 Priming coat or screed; 6 Concrete floor base.

Laying of underfloor heating in the screed

Laying into the screed is done as follows:

First prepares the floor surface cleaned of dust and debris, covered with primer (if necessary). If necessary, the preparatory pouring of the screed is performed. Next lay thermal insulation to minimize heat loss from the floor. If this is not done, then, firstly, the efficiency of the system will decrease, and secondly, the ceiling of the neighbors below will be heated.

The next step is laying waterproofing around the perimeter of the room, and after the edge insulation, to separate the screed from the walls.

Afterwards a place for the floor temperature sensor and thermostat is prepared. For this purpose, a place is selected, special notches are made for the sensor recess under the corrugated pipe, in which it will be located (otherwise it will be a real problem to remove it if it breaks). A recess is required so that the overall floor level is uniform, with no unevenness (the thermo regulator wire and sensor are placed in the pipe and laid in the recess before pouring the screed in the process of connecting the floor to electricity).

minimum, spacing, laying, underfloor, heating

After the preparatory phase you can proceed directly to the laying of mats (if just a cable is laid, additional cement-sand screed shall be made under it).

Before laying the cable (heating mat), it is necessary to check its operability. to measure its resistance without uncoiling it. The permissible deviation is ± 5-10%. The same should be done immediately after laying and before pouring the screed.

The installation begins with securing the beginning of the cable and the coupling with mounting tape. Further it is necessary to reconcile with the pre-planned installation plan, to observe its order and step. In the places of cable bending, if the cable is not fixed on the grid, it is necessary to observe the radius of not less than 5 cm. If you lay the cable yourself, use staples and mounting tape to secure it (the cable is already fixed to the mats), and make sure that the cable lines do not cross over or touch each other. Also remember to pay attention to the spacing.

The screed is then filled in. It must be at least 3 cm above the cable. If the floor heating is done under a laminate, carpet, parquet or linoleum, it is necessary to lay a layer of sound insulation.

Finally the screed hardens for a fairly long period of time about a month. Do not turn on the floor to speed up the process, because this not only does not help, but on the contrary, it will cause a threat of failure of the system. After pouring it is also necessary to make a test of the functionality of the cable, and only then proceed to connect.

The electrical floor heating system can only be connected when the power is switched off! The connection principle is clearly described in the system manual. Do not forget about the additional grounding wires, and that if the floor is laid in several rooms, each system must have (usually) its own thermo regulator.

Consider in more detail the basic steps for installing electric underfloor heating, using the Electrolux heating cable as an example.

Mark out the location of the temperature controller and the groove for routing the power cable and the floor temperature sensor. The temperature controller should be positioned at least 30 cm above floor level. If you are installing electric underfloor heating in a damp area, place the temperature controller outside the area.
Drill a hole to install the thermostat in the previously marked location.
Cut and choose a groove around 20x20mm. for routing the power cable and the corrugated mounting pipe with the floor temperature sensor.
Prepare the floor surface. Clean off any debris and apply a layer of deep penetrating primer. Priming will ensure better contact of the floor surface with the layer of the sand-cement screed.
Place the thermal insulation on top of the floor and staple the sheets together. For example you can use foamed polystyrene foam and metallized adhesive tape.
Use mounting tape for installing heating cable.
Fix the mounting tape with suitable fasteners. In order to achieve an even, parallel laying of the heating cable, install the installation tape at a distance of 30 cm. from walls with the spacing between the tapes 50 100 cm.
Mark out and draw a diagram of heating cable laying. Observe the position of furniture and radiators. Maintain a distance of at least 5 cm from walls and stationary furniture., and from heating devices (risers and central heating pipes) at least 10 cm. The installation of the heating cable begins with the calculation of the laying step using the formula: H = S100/L, where: H. laying step (cm), S. heating area (m²), L. cable length (cm).
Lay and fix the heating cable in an evenly spaced and non-intersecting manner following the previously defined laying pattern. Start laying by leading the power supply cable to the location of the thermostat and the groove you prepared earlier in the wall. Make sure that the cable coils are not brought closer than 8 cm to each other.
To fix the heating cable, lift the tongue on the mounting strap and wrap it around the cable, then lower the clamp and fix it over the tongue and cable. Make sure that the bends in the cable loops are smooth, without kinks or excessive strain on the cable.
To connect the floor temperature sensor, place it inside the corrugated tube. The end of the wire with the temperature sensor should be located inside the tube closer to the end of the tube. Before laying the flexible conduit, close the end of the conduit at the encoder end with a special plug to prevent grout from getting into the conduit.
Insert the corrugated pipe into the previously prepared groove. Note that the bend radius of the tube should not be less than 5 cm. The distance from the wall to the edge of the tube and the position of the floor sensor should be 50-60 cm.
Fix the tube with the sensor between the coils of heating cable at an equal distance from them.
Perform resistance measurement of the heating cable and the temperature sensor after attachment.
Fill the groove with mortar and connect the thermostat according to the instructions.
Check heating mat operability. For this, briefly apply voltage for 1 minute. If the heating mat works correctly, the green indicator on the thermoregulator should light up and the cable should heat up. After testing turn off power.
For quality adhesion of the screed to the base of the floor it is necessary to cut through technological holes of the order of 10×15 cm in every 30-40 cm in the previously laid thermal insulation.
In accordance with the instructions for the dry mixes prepare the required amount of grout.
Set the screed level and pour the screed with a minimum thickness of 3 cm. Do not allow bubbles to form and heating cable to rise. Heating cable, connection socket and floor temperature sensor must be completely filled with mortar.
Install the final floor covering (ceramic tiles). Take into account the timing of the beginning of installation of the final floor coating, see the instructions to the chosen dry mixture. Do not use the laid floor heating to accelerate the drying of the screed.

Installing floor heating on the screed

When laying heating mats on the screed under the tiles, the process is slightly different. Firstly, tile adhesive is used instead of screed, and secondly, the thickness of its layer will be much less than the thickness of the screed. To fix the mat on the floor surface before laying tiles, you can use double-sided adhesive tape. If it is necessary to change the shape of the mat, a notch is made on it, which gives the possibility of turning it 180 degrees. However, it is strictly forbidden to destroy the integrity of the cable.

The advantage of this laying method is the possibility to install the system on the old tile layer, i.e. е. There is no need to dismantle the layer of tiles you had before. Another advantage is the possibility to use the floor after only a week (or even less, depending on the drying rate of the adhesive).

Consider in more detail the basic steps of installing electric underfloor heating on the example of heating mat Electrolux.

1. Preparing the place for installing the thermostat and the temperature sensor. The thermostat has to be placed at least 30 cm high. from the floor. When choosing where to place the thermostat, place it so it does not interfere with the further placement of furniture, and you were comfortable to use it. Do not forget that in rooms with high humidity, such as bathrooms, the thermostat must be installed outdoors.
We mark and mark the place for mounting the thermostat. Mark the place where we shall lay the power cable and the floor temperature sensor. The distance from the wall to the place of installation of the floor temperature sensor must not be less than 50 cm. When laying the power cable, make sure that the cross section of the power cable matches the current intensity of the floor heating.
Using a drill bit and an electric drill, select a recess to install the thermostat. Don’t forget to wear gloves and glasses. You can use a vacuum cleaner to collect dust.
Use an angle grinder or a stitch cutter to cut a 20×20 mm groove. for laying the supply cable of heating mat and corrugated mounting pipe with a floor temperature sensor.
Using a chisel and an electric drill in percussion mode (or a torch) we make a groove (stroked).
2. Installing the thermostat and the temperature sensor. Install the temperature sensor in a corrugated plastic tube. The end of the wire with the temperature sensor must be located inside the corrugation at its very edge. Before laying the heating mats, close the end of the heating tube at the sensor location with a special plug to prevent grout or tile adhesive from getting inside the heating tube.
Insert the corrugated pipe into the prepared grommet. Use special plastic clips or dowel clamps to fix corrugated pipes in the gooseneck. The bend radius of the corrugated pipe at the wall must be at least 5 cm.
Check the electrical connections. Fill the groove with trowel and tile adhesive using a trowel.
3. Preparing the floor surface before laying the heating mat. Remove debris from the floor and clean the room with a brush. Prime the floor surface with a primer for better contact with the tile adhesive.
Mark up the surface before laying the heating mat. It is necessary to take into account that the distance from the walls and stationary furniture should be at least 5 cm., and from heating devices (risers and central heating pipes) at least 10 cm.
4. Laying the heating mat. Place the heating mat on the heating area that has been pre-determined.
Shape the heating mat into the desired shape by cutting it into sections without touching the heating cable.
When laying the heating mat, do not allow the pieces to overlap and cross the cable. It is not allowed to use the same heating mat for heating different types of rooms, such as bathroom, kitchen, room or corridor. Including it is not recommended to use the same heating mat for heating floors with different construction. Use separate heating mats in these cases.
When installing the heating mat, it is necessary to position the floor temperature sensor so that it is at an equal distance between the coils of the heating cable. Check that the heating mat is not mechanically damaged after completion of the installation.
To check the correct operation of the floor heating, measure the resistance of the heating mat and check the value against the specified in the manual.
Fill the groove with mortar and connect the thermostat according to the instructions.
Check the operability of the heating mat. For this, briefly switch on the voltage for 1 minute. If the heating mat works correctly, the green light on the thermoregulator should light up and the mat should heat up. After checking, switch off the power supply.
5. Install the floor covering. After the functional test, you can proceed to cover the heating mat with a layer of tile adhesive. Please note that there must be no draughts in the room where the work is being carried out.
It is desirable to apply the adhesive mortar in small areas and install the tiles by slightly pressing them into the mortar. The thickness of the adhesive mixture should be 8-10 mm. Tile adhesive must cover the heating mat completely and be in contact with the entire surface of the tile without air cavities. Heating mat may be used only after the tile adhesive is completely dry.
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