* Cut PEX pipe perpendicular to its axis, leaving no burrs
* Wear crimp nut and locking the cutting ring on the end of the PEX pipe
* Insert the PEX tube inside the sleeve, it should go there all the way
* Crimp tool attached to the outer thread of responses and manually turn until it stops.

Then with a wrench it fix about 1,5-2 turnover.

In the compounds of this type, with the original elements of Uponor Wirsbo PEX, sealing is carried out by contact of metal surfaces (metal – metal) without the use of rubber seals. In this connection, the connection will always be sealed regardless of the temperature and duration of operation.

In compounds of another type, with rubber sealing elements, sealing depends on the life of seals.

At high temperatures, water (coolant), a hot water supply systems, or PEX heat transfer plate PEX radiant heating, the service life of these spacers is about 5 years.

There are several methods of laying underfloor PEX radiant heating with a concrete solution.

Minimum thickness of concrete above the mud tubes should be 30 mm and the maximum recommended thickness – 70 mm.

Installation of PEX pipe in the metal hoop is an easy and economical method of fastening pipe underfloor PEX radiant heating. The maximum distance between the bracket 750 mm. Metal mesh should be attached to the ceiling, but not to the layer of isolation under the net.

In all types of flooring important is the consideration of heat loss and the penetration of sound along with the required load.

Hydronic heating floor PEX radiant heating is the common requirements for PEX radiant heating systems for almost all types of buildings with modern designs. The project can be adapted to the specific requirements of the design.

According to EN 1264, floor PEX radiant heating system can be divided into types A, B and C, depending on the location in the floor construction of PEX radiant heating loops.

In the case of liquid concrete, and anhydrous floors that are currently practiced in the new buildings, used “wet” underfloor PEX radiant heating system. This means that the PEX radiant heating loops are placed directly in concrete (Type A and C).

Where, for technical reasons, for example. Too high mass or high-floor construction (which is often found in older buildings) can not apply such a decision, it is recommended to use “dry” method. In this case, the PEX radiant heating PEX pipe are placed in a layer of floor insulation. This reduces the thickness of the concrete layer dissipates the load, ie reduces the height of the floor construction (type B).

It should be remembered that the German norm DIN 4725 meets European standard EN 1264.

The design of the proposed layers of insulation meets the requirements of DIN 18560, Part 2, section 3.3.
Isolation concrete floor with a concrete floor for underfloor PEX radiant heating.

Terms of proper design of floor heating system are:

* Compliance with the standard PN-91/B-02020 – Thermal protection of buildings.
* Calculation of heat requirements according to EN ISO 6946 (provisionally, according to German standard DIN 4701) – QN.
* Calculation of heat requirements for the premises at a reduced amount of heat loss through the floor QPd. Q = QN – QPd
* Calculation of heat flow for the premises:

APd – the floor surface in the room [m2]

In areas with particularly high demand in the warmth associated with a high degree of external walls and surfaces of windows, you can design the coastal zone to meet the boundary values.

Coastal zones, covering more than 20% of the total heated surface, or with the size of more than 6 m2 should be joined with the distributor as a separate circulation. In the case of smaller coastal zones can be projected so-called. integrated coastal zone.

Then, according to the table provided below, depending on q [W/m2], it is necessary to determine the stacking step of PEX radiant heating loops.