The coefficient of linear expansion of aquatherm pipes without stabilizing components isĪquatherm faser composite pipes must have enough space to expand (see below). The coefficient (a) of linear expansion of aquatherm composite pipes is onlyĪnd therefore nearly identical with the linear expansion of metal pipes. aquatherm pipes for cold water and aquatherm faser composite pipes for hot water and heating plants make this possible. in the basement), excellent optical characteristics and form stability are important. ![]() This can be ensured by a favourable fixing of the riser in the duct.Īn adequate large pipe liner also gives sufficient elasticity to the branchoff pipe.įurthermore the installation of a spring leg gives the appropriate elasticity. The installation of risers of aquatherm pipes without stabilizing components requires a branch pipe, which is elastic enough to take the linear expansion of the riser. Make sure that the distance between two fixed points is limited to a maximum of 3.0 meters. This directs the expansion on the distance between the fixed points, where it is ineffective. In general it is possible to install risers rigidly, that means without expansion joints. All clamps in the riser must be installed as fixed points. The positioning of a fixed point directly before each branch-off point is sufficient. The linear expansion of aquatherm faser composite pipes in vertical risers can be ignored. Installation in ductsĭue to the different linear expansion of the aquatherm PP-R-pipes with or without stabilization, the installation of pipe branches in risers has to be made according to the selected type of pipe.Īquatherm green pipe MF (faser composite pipe)Īquatherm blue pipe MF (faser composite pipe) The compressive strain and tensile stress arising from this are not critical as they are absorbed by the material itself. to current regulations.Ī temperature induced linear expansion is prevented by the embedding in the floor, concrete or plaster. The same applies to pipes, which do not have to be insulated acc. ![]() In the case where the expansion is greater than the room to move in the insulation, the material absorbs any stress arising from a residual expansion. to DIN 1988 or the EnEV (Energieeinsparverordnung) provides enough expansion space for the pipe. ![]() ![]() On locating a sliding clamp it has to be ensured that movements of the pipelines are not hindered by fittings or armatures installed next to the clamps.Īquatherm pipe clamps have an extra even and sliding surface of the sound insulation insert.Ĭoncealed installations generally do not require a consideration of the expansion of aquatherm PP-R-pipes. Sliding clamps have to allow axial pipe movements without damaging the pipe. Pipe clamps suited for fixed point installations To compensate the forces arising from the linear expansion of the pipe there must be sufficient and stable clamps and mountings.Īquatherm pipe clamps meet all mentioned requirements and – when considering the following installation instructions – are perfect for fixed point installations. Risers do not require expansion loops, provided that fixed points are located immediately before or after a branch. Swinging clamps should not be used as fixed points.īasically vertical distributions can be installed. On using threaded rods or threaded screws the drop from the ceiling should be as short as possible. In principle fixed points have to be measured and installed in a way, that the forces of expansion of aquatherm PP-R-pipes as well as probable additional loads are accommodated. On locating fixed points the pipelines are divided into individual sections. This avoids uncontrolled movements of the pipe.
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