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PEX Tubing for small warm floor project

Flow tubes for 1 m2 floor surface with a step of 20 cm is approximately 5 absorption. m. Due to the fact that, due to hydraulic losses in the system of floor heating water, the contour of the loop length over 100 m stack is not recommended, it is easy to calculate that for step placement of 20 cm can lay pipe on the area of ​​20 m2. Lots more space to heat several loops, each of which, in turn, connects to the distribution manifolds. Under a system of PEX heating, unlike electric, does not necessarily take into account the location of furniture. The fact that the power cord under furniture can overheat and fail, the coolant tubes of this dangerous deficiency deprived.

In the fourth phase installation of warm water floor, after the pipe installation (units) produce crimp PEX tubing heating system – this is a hydraulic test systems, pipelines, boilers and vessels leak. Pressing heating systems – a mandatory event, which takes place after the installation works, it allows you to make sure no damage pipes, which can be obtained in parallel work on repair facilities, elementary might break her or drop her something heavy … crimping is performed directly before pouring the concrete screed. Pouring the concrete screed is at room temperature, while the system is usually under pressure from 3-4 bar for 24 hours. It is recommended to leave the heating system under pressure to complete all installation of floor heating.

Screed in the warm water floor heat distribution is material. For the production of concrete ties are usually applied cement-sand mortar or peskobeton, recommended grade of concrete not less than the M-300 (B-22, 5). The thickness of the ties of warm water floor must be at least 30mm above the pipe. When the thickness of screed over 150mm require separate calculations of thermal conditions of heating panels with the introduction of special correction factors.

For reference: the weight of 1 sq. m. ties at a thickness of 50 mm is 250-300 kg.

Include a system of floor heating water can only after a full gestation solution (for compositions based on cement, this process takes at least 28 days). It was only after the solution was completely pick up strength, should be gradually and smoothly increase the temperature of water in the system – with a gradual release of the operating mode for three days.

At the final stage Finish coating is placed over concrete screed. Particular attention should be given material that should have the coefficient of heat transfer resistance is not more than 0,15 m2 • K / watt. With ceramic plates and other similar materials no problems, and materials such as flooring, carpet and resilient coatings must have a special designation, designed for floor heating systems, ie, underfloor water.

If the use of concrete (sand-cement screed) is not acceptable, due to limited height space, wet process, critical periods of work and / or unacceptable significant increase in load on the floor, there will grazing system of water tepplogo sex.

Grazing system of water floor heating – the main difference between grazing systems on the concrete, is the absence of wet-process, which significantly reduces the installation time and provides immediate system ready for operation after installation. Slub system suitable for all types of buildings (supporting structures), including for wooden houses. Grazing system, in turn, is divided into two systems, polystyrene and wood.

Polystyrene system of water floor heating – the easiest (by weight) The current system of warm water floor. The system is based polystyrene plates 30h300h1000 with grooves (straight and turning), in which are embedded aluminum heat distribution plate. To evenly distribute heat from the pipes all over the floor in the grazing systems used aluminum plates for the stacking step 150 and 300 mm. They are metal plates with a slot for a heat pipe made of aluminum 0.5 (0.4), h270 (130) h1200mm. The plates have a special profile for a snug fit to the pipe. Aluminum plates stacked (without glue) to polystyrene plates with grooves. On the flatness of the floor slab is placed “Finish” flooring. Parquet (plain or laminated) 9-22 mm thick is placed directly on the aluminum plate through a moisture-absorbing pad of paper or polyethylene foam. If you use linoleum coverings, ceramic tiles or tiles of PVC should be first on the aluminum plate to put plate GVLV (elements of sex) with a minimum thickness of 10 mm.

Components of polystyrene heating system:

  • base (ground) floor
  • plastic film
  • polystyrene plate with grooves for the pipes are designed to prevent heat loss down
  • pipe for hot water floor heating
  • aluminum heat distribution plates
  • gypsum fiber layer (gypsum fiber sheet, moisture resistant) or plywood

Noteworthy properties of polystyrene:

  • There is no wet process, in contrast to concrete systems
  • The system is ready for operation right after installation
  • The minimum height of 50 mm
  • Load of 30 kg / m ²
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