Heating / | The unit of floor heating |
Warm floors in the market appeared relatively recently. However, they are quite quickly gained popularity among consumers, that does not depend on climatic conditions and geographic location. Perfect unit of floor heating in the children's room, bedroom and bathroom. There are two types of floor heating: water and electric, that is the whole area of the room in the primary screed is laid pipe that is connected to the hot water system, or a special power supply cable, and runs on top of the final tie.
Warm floors, water
Water floor are economical, since it is not in operation increases operating costs. The only possible problem may be the lowering of the temperature of hot tap water from the neighbors that may cause trouble. underfloor apparatus is performed by a conduit, which may be made of copper or galvanized pipe. Recommended use Metal-piece pipe, since the metal pipe laying will inevitably joints tubes. And that could lead to leakage, which is to eliminate the need to disassemble the entire floor. Solid Metal-plastic piping allows you to hedge against such troubles.
Warm floors Electric
Electric floor came to us from Europe, where the supply is performed and a special cable. The heating cable is a key element of the warm floor. This conductor, characterized by a high resistance heated by passing a current through it. At the beginning of its appearance underfloor displeased environmentalists because the electromagnetic field generated by them has an adverse impact on human rights. Today the problem is removed, as environmentalists have recognized that the electromagnetic radiation of modern cable creates a minimum without causing harmful effects. In order to expand the functions for comfort and optimal economy of use thermostats, which are devices offer high accuracy. Further advantages of the set, an electric floor heating has several disadvantages. Firstly, it is characterized by a high rate of power supply, which can be up to four kilowatts per hour. Secondly, make a connection test floor can only after drying screed, or rather a half months from the date of installation. If you connect it turns out that the floor does not work, it is necessary to break tie, to make the fault and re-produce the fill solution. Also, for such a costly and lengthy procedure would have recourse in the event of failure in the floor.
The unit of floor heating
When creating systems « floor heating » using the laying of the heating cable is observed several important recommendations, namely:
- heating cable is used in accordance with manufacturer's recommendations;
- cable connection is carried out by a qualified electrician;
- should observe the recommended power, calculated per square meter of floor;
- heating cable must not be exposed to mechanical tension and stress, prohibited from extending and shortening;
- in the process of laying the cable have to be orderly, that it does not hurt;
- It should be possible to turn off the cable automatically by thermostat;
- made compulsory grounding of the heating cable;
- at low temperatures, PVC cable jacket becomes excessive rigidity, so during installation you need to include a short cable unwound;
- It is not allowed to include cable is unwound;
- not recommended for floor heating device occur at temperatures below five degrees below zero.
The stages of work
In the early works is drawing heated area, which indicates the location of the heating cable, joints and terminations, place a network connection and a temperature sensor. If the cable is damaged as a result of installation or construction works this will greatly facilitate the search for fault location. Composing the drawing, you need a cable between the lines to determine the distance. To do this, use the formula: P = P x 100/L, where:
P — this distance in centimeters;
P — free area in square meters;
D — cable length.
The temperature sensor is located between the lines of the cable at a distance of about one hundred centimeters from the wall to open the hinge. For installation of the sensor, the thermostat wall box and cold bonding wire in the wall cuts through the cutting grooves with a section twenty-twenty millimeters. The base where the cable is laid, is cleared from sharp objects and debris. After that, the floor is fixed mounting tape. The heating cable on the surface of the entire floor splits evenly loops, avoiding areas intended for the tank, pipes, cabinets and other items. The cable is mounted on a mounting tape with special fasteners, which are located at a distance of three centimeters. The heating cable must not touch each other or overlap. When cable installation is complete, the ohmic resistance measurement is carried out, which should not exceed the value specified on the box -5% - 10%. According to the drawings, the cable is located between the lines of the temperature sensor, packed in a plastic tube with a diameter of about sixteen millimeters. To prevent to the concrete pipe at one end sealed with a plug. The bending diameter of the pipe should not be more than six centimeters.
Fill
After completing laying of cable filling work is performed with a solution that does not contain sharp stones. Coupling and heating cable shall be filled with a solution completely. The thickness of the screed may not exceed five centimeters. Improper or low-quality shading solution can lead to the formation of air pockets around the cable, which could result in exceeding the permissible temperature and as a result of damage to the cable. After pouring cable ohmic resistance is measured again. The heating cable is not included to complete solidification of the solution. Typically, the solution freezes completely flooded during the month and a half. Connecting heating cable through the thermostat to the mains. Sex is heated to temperature set no earlier than a day. After all the work we can assume that unit of floor heating is complete.