How quickly does electric underfloor heating heat up?

How quickly heats up electric warm floor

If a heating film with a power of 220 W/m2 is used, then the maximum consumption will be 220 W/m2. If you apply a temperature controller and install a comfortable floor temperature 24, then consumption will decrease to 80-100 watts / m2. Applying a heating mat or a cable with a capacity of 150 watts / m2 Maximum electricity consumption will be 150 watts / m2. Using a thermostat with a temperature setting of 24 your underfloor heating will consume between 40 and 80 watts/m2. Of course, consumption depends on the ambient temperature.

How quickly infrared heat-insulated floor warms up linoleum?

Infrared warming film with a capacity of 220 watts / m2 warms the linoleum to a temperature of 30 for about 3-7 minutes, if the warming film is directly under the linoleum. If the heating film is laid under a sheet of GVL or Plywood, as manufacturers recommend, then the linoleum will warm up to a temperature of 30 in about 15-30 minutes, but it will also cool down for a long time. Also, time will be spent on the heating of the laminate.

How quickly heats up the tile with laid under it wearing a mat or cable?

If a heating mat or cable with a power of 150 watts / m2 is laid, the warm-up time to 25 varies between 10-30 minutes. Warm-up time depends on the thickness of the tile adhesive or concrete mortar. Typically, the manufacturer recommends a layer thickness of no more than 20mm for heating mats, and no more than 40mm for heating cables. But there are exceptions.

Why the heating mat cannot be filled with a screed larger than 20mm?

This is due to the power of the heating cable laid on the grid. Typically, the power of the heating cable is not more than 15 watts per linear meter. The thicker the layer of screed or tile adhesive, the slower the heating will be. The longer the heating will occur, the greater the probability of overheating of the heating mat or cable, because the heat released by the heater will delay in a thick layer of screed or tile glue in a thick layer. As a result, cold floors with high electricity consumption or failure of the heating mat or cable. But there is an exception. Using the MNKD silicone heating mat or SNKD cable, you can fill them with cement mortar up to 150mm, but be sure to use reinforcement (metal mesh) with a screed layer of more than 50mm.

How to stack a heating infrared film?

Below you will see in what order the infrared warming film is stacked, heating mat or heating cable depending on the situation.

Why does the manufacturer recommend laying polyethylene on the infrared heating film?

Polyethylene pile is protected from possible to enter water and mechanical damage to heating film during operation, so they say manufacturers. When laying an infrared heating film under a laminate, the substrate is not placed under the laminate. While walking on the floor, friction of the joints of the laminate against the heating film occurs, which can damage the heating film. To avoid this, manufacturers recommend covering the heating film with polyethylene with a thickness of 100-150 microns.

It is true that underfloor heating can be used as the main heating?

Yes it is! As an example, in.Yekaterinburg, an Electro-house was built, where electric floor heating is used as the main heating.

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Underfloor heating has long been used in some homes as the main heating. The efficiency of basic heating with underfloor heating is much higher than that of electric convectors and heat guns, especially than that of central heating with radiators. I will try to explain why. The point is the area of ​​\u200b\u200bcontact of air with the heater. The larger the area of ​​​​the heater, the air warms up more efficiently and faster. As you know, hot air tends to go up, while cold air always goes down. It follows from this that as soon as the floor is heated, the cold air begins to warm up, which, having warmed up, rises. Sufficient small floor temperature from 24 to 30 to warm the room with good insulation. It is important to understand that the main heating with underfloor heating will be as effective as possible in rooms with good insulation and no drafts. The underfloor heating power for the main heating should be at least 180 W/m2, it would be better if the underfloor heating power is 200 W/m2. I note that the power should be this at a voltage of 220 Volts, and many manufacturers produce products for a 230 Volt power grid, respectively, and the indicated power at a voltage of 220 Volts will be less.

They say that very strong and harmful electromagnetic radiation comes from the electric floor heating. This is true?

This is not true! Electromagnetic (AM) Radiation from electric heating floor in tens of times less than allowed. For comparison, let’s take an ordinary electric hair dryer, which is used to dry hair, its EMR is the strongest and ranges from 500 to 2000 μT (micro Tesla).

I note that the safe value of EMR in residential premises is 5 μT, in non-residential premises 10 μT. EMR over 40,000 μT is deadly.

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Two-core heating cable radiates less than 0.2 μT Single-core heating cable radiates less than 1.3 μT Infrared heating film emits less than 0.15 μT Where should the temperature sensor be installed?

Temperature sensor must be installed between the heating elements, as shown in the figure below. Why is that? Because the temperature sensor must measure the temperature of the heated object, and not the heating cable or heating film. If the temperature sensor is located directly on the heating element, then when the heating is turned on, the temperature will quickly reach the adjuster, which will turn off the heating and your floors will remain cold enough long time.

How to Lay and Install Underfloor Heating Mats Prior to Tiling. Tile Mountain

The temperature controller “clicks” very often. At night, it bothers. Why and how to fix it?

Most likely the floor temperature sensor is located too close to the heating cable or the heated carbon strip of the heating film. When the warm floor is turned on, the temperature controller is “clicking”, which indicates the inclusion of a warm floor. The temperature sensor reacts to an increase in temperature and sends a signal to the temperature controller, which, by clicking, turns off the warm floor. Such a cycle can be repeated every minute if the temperature sensor is very close to the heating element. This arrangement of the temperature sensor is usually used to protect the heating element from overheating. You will see the correct location of the temperature sensor for underfloor heating systems in the figure above.

The indicator on the temperature controller flashes quickly. What could it mean?

The floor temperature sensor may have failed or the overheating protection has tripped. You can verify that the temperature sensor is broken only by replacing it with a new one. But before changing the sensor, turn off the heating of the floor for 1-2 hours. Then turn on the heating at a temperature of 5-7 degrees. If the indicator stops flashing frequently, then the overheating protection has tripped. Set the floor temperature to 26 degrees. If the indicator continues to flash rapidly, replace the floor temperature sensor with a new one. It is advisable to acquire the temperature sensor to the manufacturer, as the temperature controller.

Why thermostat clicks, but it does not disable the heated floor?

First you need to remove that the temperature controller does not turn off the warm floor. It is not always possible to tactilely determine whether the warm floor is on or off, because.To. the heating and cooling time takes a lot of time, except for the infrared heating film laid under the linoleum, which is a violation of the heating film installation and operation technology.

If the temperature controller really clicks, but does not turn off the warm floor, then most likely the relay contacts have “sticked”. This indicates that the load on the thermostat exceeds the allowable values, that is, the power of the warm floor is more than the allowable 3000 watts at a peak short-term load on the temperature controller of 3500 watts. This case is not warranty.

The second possible option is not a quality relay installed in the temperature regulator.

Types of warm floors

Three types of underfloor heating are best known today:

Warm water floors

Water floors are a piping system connected to a gas boiler through a manifold block. The boiler by serving hot water “makes” the floor covering.

Pipes for the water system are used from stitched polyethylene, polyurethane, metal plastic and copper. The most popular pipe XLPE. Polyurethane products require for installation of special welding equipment.

The best in terms of quality copper pipes. At the same time it is the most expensive pipelines.

Warm water floors are hidden by cement screed. How long will the floor coverings be warm, largely depends on the thickness of the cement screed. Pipes for underfloor heating are normally used with a diameter of 16 mm. Such a size confirmed by the accumulated operating experience is determined on the basis of heat engineering calculations.

Faster all the warmth begins to give a copper pipeline

A certain amount of heating circuits located in several rooms are heated through the collector assembly of hot water located in several rooms.

Heat engineers recommend making the length of the 1st circuit about 70 m with a pipe diameter of 16 mm. The height of the screed is advised to perform no more than 50 mm. In this case, the thickness of the screed over the laid pipes will be about 30 mm.

The required temperature floors will not raise no earlier than half a day

How much does a warm floor warm up when it is first turned on under such conditions?

Practice shows that the heating time of a warm floor when the first turning on can last from 12 hours to one and a half days.

To do this, the water leaving the boiler is brought to a temperature of 90 ° C.

After the floor warms up, the initial temperature of the coolant is reduced to 70 o.

If the floor heats up for a long time, then the cause must be sought in improper installation and connection of heating circuits or the equipment was turned on with a “raw” screed.

Cable heating floor

Cable laying is performed in the form of a spiral and a snake. The spiral shape is used in small areas (up to 20 m 2). On large bases, the cable is fixed in the form of a snake.

The electric heating element will quickly heat up and begin to give off heat to the body of the floor. Screed thickness of 70 mm or more will significantly increase the inertness of concrete. The floor in this case, how much longer it will heat up, how slowly it will cool down. At the same time, power consumption will increase significantly.

It takes 6 to 8 hours for the first heating

How much heated floors warm up when the cable is first turned on depends largely on the power of the wire.

With the right installation of electrical heating and compliance with construction norms when laying a screed, the time of first warming up the base of the room can be from 6 to 8 hours.

When a cable coated with bituminous mastic is laid under a ceramic tile layer, the heating time of the floor covering is significantly reduced.

Film infrared heating

Increasing attention of consumers is attracted by film infrared heat-insulated floors. In the polymer layer of the film, the electrode mesh, which, under the influence of electric current, radiates thermal rays in the infrared range.

Many people are interested in how quickly the floor covering from the IR film heats up. This question can not be unambiguously replied. It all depends on the coverage area, the technical parameters of the IR film, the method of laying the connection to the electrical network. But one thing can be argued that where the floor was heated under the IR coating, the first heating time was 2. 3 hours.

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Due to its constructive features, IR coatings are easy and quickly mounted under any floor covering, except for ceramic tiles. The exception is the IR heating device under the tile. Read more about connecting and heating the floor, see this

An example of an IR heating device for laminate parquet

The device of a warm floor of this type consists of several stages:

  • A vapor barrier made of a thick polyethylene film is laid on the finished floor base.
  • Then placed thermal insulation from plates of polyurethane, foam or other similar material.
  • In some cases, thermal insulation is covered with a layer of bituminous coating mastic.
  • On top of the layer of mastic or thermal insulation steering a foil substrate, which is placed by a reflective surface pointing up.
  • Rolls of IR film are rolled out on the surface of the substrate. Fragments of the IR coating are interconnected by contact clips.
  • Install a temperature sensor.
  • Connect infrared heating to the mains through a control unit equipped with a display.
  • Testing. Errata eliminate. The test is repeated.
  • On top of the IR coating spread a soft substrate.
  • Laminate parquet is laid on the substrate. You can see the detailed installation of the film on the floor in this

We will reflect in the table examples of the need for time until the full heating of underfloor heating systems at the first start:

No. Floor heating system Time to full heating
one Water heated floors 12 hours or more
2 Cable heating 6 – 8 hours
3 IR film coatings 2 – 3 hours

What should be the temperature for underfloor heating

It is important to have an idea about the device and the features of the underfloor heating in order to understand how the temperature indicators can be adjusted and to what level, in principle, heating is possible. Regardless of the manufacturer or type of system, the floor consists of several layers. There are only three. Only this design allows you to ensure the optimal temperature of the floor in the room. Now consider the features of each of these layers separately.

Wiring diagram for electric floor heating

First layer

It is a cement screed, on top of which a special substrate is laid, which has waterproof and heat-insulating properties. The main task of the substrate is to keep the heat in the house and protect the lower floors from possible leaks. The screed also protects the pipeline from mechanical stress, which is very important at the installation stage.

What does an underfloor heating device look like under a tile

Second layer

The next layer of the underfloor heating system is a pipeline through which hot water or coolant circulates. For the manufacture of the pipeline, metal and expanded clay are most often used. When installing other heating systems, special heating elements are installed instead of pipelines, although the water heating system is considered the most common (it is economical and safe).

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third layer

The final layer of the system is a solid concrete screed that closes the pipeline. Outdoor coating is on top of the screed, for example, parquet or linoleum. There are several main requirements for the finish coating. First of all, it should be not only moisture resistant, it should not be afraid of high temperatures.

Concrete Layer. Direct Floor Screed

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