R986S GIACOMINI | Alldatasheet

Document overview

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Technical content

Features

  • Not suitable for domestic water
  • Pressure loss reduced
  • Lightweight: the specific weight of polybutylene is approximately 9 times lower than the weight of iron and copper
  • Reduced thermal expansion
  • Non-toxic: Polybutylene is a sure and non-toxic material
  • Corrosionless: polybutylene is a bad conductor of electric energy
  • Scaleless: linked both to the impossibility of calcareous deposit formation and to the chemical inertia of the material
  • Resistance to high abrasion: this specific characteristic of polybutylene allows to increase the flow speed without abrasion problems
  • UV ray resistant: when systems are exposed to solar rays, we recommend the piping be protected in order to avoid a premature ageing of the material
  • Resistance to shock: the high material flexibility allows the pipe to return again to its original shape after a shock
  • Chlorine resistant: as with all the plastic materials, the polybutylene can be damaged by chlorine concentrations higher than 1,5 ppm (mg/l)
  • High flexibility especially at low temperatures
  • Recycleable material
  • Very good resistance to long-trem stresses in combination with pressure and temperature. This feature remains unchanged also with high water temperature
  • Giacomini polybutylene pipes are compatible with all Giacomini manifolds, fittings, valves and lockshields. Connections are made using Giacomini adapters for plastic pipes (R179, R179AM). R986 - R986S

PiPes, accessories and fittings Pol ybutylene PiPe for hea ting and cooling distribution systems r986 and r986s Thermal linear expansion During the planning and outside installation phases of Giacomini polybutylene pipes the thermal expansion must not be overlooked. If the working pressure of the system can pass through variations up to 10÷15 °C (typical case of systems for the addition of sanitary hot water), the planner will evaluate the piping behaviour. This is possible using the following table and the diagram. where: ∆t = working temperature variation in degrees Kelvin (°K) or Celsius (°C) ∆l = variation of length in mm L = initial length of the pipe in mm Pressure losses The following diagram shows the pressure losses distributed in Giacomini polybutylene pipes. In order to evaluate a pressure loss at a temperature different from 10 °C (for this temperature is valid the above diagram), it is sufficient to multiply the result obtained by the diagram for the suitable coefficient of correction: ∆P50 °C = ∆P10 °C • 0,89 ∆P80 °C = ∆P10 °C • 0,78 Graphic determination example of pressure losses Examine a Giacomini polybutylene pipe 20 x 2 mm (internal diameter 16 mm) with a flow of 200 l/h at a temperature of 80 °C. In the diagram it is possible to determine immediately a pressure loss equal to 10 mm w.c./m at a temperature of 10 °C. At 80 °C it will result in: ∆P80 °C = ∆P10 °C • 0,78 = 10 • 0,78 = 7,8 mm w.c./m 0,003 10000 1000 100 0,1 00001000100101 100 1000 10000 211,010,0 Flow l/s Flow l/h Pressure loss Pa/m Pressure loss mm w.c./m 11 11,6 12 16 18 0,10 m/s 0,25 m/s 0,5 m/s 0,75 m/s 1 m/s 1,5 m/s 2 m/s 2,5 m/s 3 m/s 3,5 m/s 4 m/s Internal diameter mm Pipe length [m] Temperature variation [K] 5 10 20 30 40 50 60 70 80 0,1 0,07 0,13 0,26 0,39 0,52 0,65 0,78 0,91 1,04 0,2 0,13 0,26 0,52 0,78 1,04 1,30 1,56 1,82 2,08 0,3 0,20 0,39 0,78 1,17 1,56 1,95 2,34 2,73 3,12 0,4 0,26 0,52 1,04 1,56 2,08 2,60 3,12 3,64 4,16 0,5 0,33 0,65 1,30 1,95 2,60 3,25 3,90 4,55 5,20 0,6 0,39 0,78 1,56 2,34 3,12 3,90 4,68 5,46 6,24 0,7 0,46 0,91 1,82 2,73 3,64 4,55 5,46 6,37 7,28 0,8 0,52 1,04 2,08 3,12 4,16 5,20 6,24 7,28 8,32 0,9 0,59 1,17 2,34 3,51 4,68 5,85 7,02 8,19 9,36 1,0 0,65 1,30 2,60 3,90 5,20 6,50 7,80 9,10 10,40 2,0 1,30 2,60 5,20 7,80 10,40 13,00 15,60 18,20 20,80 3,0 1,95 3,90 7,80 11,70 15,60 19,50 23,40 27,30 31,20 4,0 2,60 5,20 10,40 15,60 20,80 26,00 31,20 36,40 41,60 5,0 3,25 6,50 13,00 19,50 26,00 32,50 39,00 45,50 52,00 6,0 3,90 7,80 15,60 23,40 31,20 39,00 46,80 54,60 62,40 7,0 4,55 9,10 18,20 27,30 36,40 45,50 54,60 63,70 72,80 8,0 5,20 10,40 20,80 31,20 41,60 52,00 62,40 72,80 83,20 9,0 5,85 11,70 23,40 35,10 46,80 58,50 70,20 81,90 93,60 10,0 6,50 13,00 26,00 39,00 52,00 65,00 78,00 91,00 104,00 /uni0394t (K) /uni0394l mm 1 m 2 m 3 m 4 m 5 m 6 m 7 m 8 m 9 m 10 m L 0 10 20 30 40 50 60 70 80 90 100 110

PiPes, accessories and fittings Pol ybutylene PiPe for hea ting and cooling distribution systems r986 and r986s Bending Due to the high flexibility of Giacomini polybutylene pipes simple bending can be carried out manually. The minimum radius of curvature to be realized is equal to 5 times the pipe diameter (as recommended in the specification DIN 4726), if pipe has been installed without sleeve. D R Precautions Giacomini polybutylene pipes, as with all plastic pipes, need some small precautions in order to guarantee duration and operation: Store the pipe in suitable packaging in order to avoid direct exposure to sun rays. GIACOMINIPB GIACOMINIPB GIACOM INIPB Store the pipe packaging in covered and dry places. GIACOMINIPB GIACOMINI PB GIACOMINIPB GIACOMINIPB GIACOMINI PB GIACOMINIPB GIACOMINIPB GIACOMINI PB GIACOMINIPB Prevent the pipe from coming into contact with sharp objects, and pay particular attention during transportation and installation of the pipe. Avoid tight bends during the installation of the sheathed pipe; it is recommended to have curves at least 8 times the external diameter of the pipe used, in order to guarantee pliability. Cut the Giacomini polybutylene pipe using the correct pipe cutters to ensure there are no burrs and that the cut is perpendicular to the pipe axis. Prevent the pipe from coming into contact with open flames or other heat sources. Protect Giacomini polybutylene pipe from U.V. rays during installation. Avoid direct exposure to the sun in order to stop “pipe ageing” . Graphic determination example of thermal linear expansion When a pipe length L = 4 m and a probable temperature variation ∆t = 50 °C has been fixed, it is possible to go back to a variation of length ∆l = 26 mm using the table and the diagram. Thermal linear expansion calculation Thermal expansion of Giacomini polybutylene pipes can also be valued with the following formula: ∆l = L • ∆t • α where: ∆t = working temperature variation in degrees Kelvin (°K) or Celsius (°C) ∆l = variation of lenght in mm L = initial pipe length in mm α = linear thermal expansion coefficient of 0,13 mm/mK for Giacomini polybutylene pipes (mm for every °C of thermal fall) Example of thermal linear expansion calculation When a piping length L = 4 m and a possible variation of temperature ∆t = 50 °C, has been fixed the formula used is the following: ∆l = L • t • α = 4 • 50 • 0,13 = 26 mm Warning. The above mentioned thermal expansions refer to the visible pipe installation and it is recommended to cover the pipe to protect it from solar rays. In case of an installation where the outer sleeve is not used, the expansion is absorbed by the pipe due to its high flexibility. When using an outer sleeve the expansion will be discharged in the air space between the pipe and the sleeve. Brackets for external pipe work For an outside installation, the designer and the plumber have to carefully value the distances between the pipe brackets. In order to do this valuation, it is necessary to know the working temperature of the pipe. Brackets distance (cm) Pipe external diameter (mm) 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 80°C 60°C 20°C Warning. In order to prevent early ageing of the pipe, we recommend to install Giacomini polybutylene pipe away from direct sun light.

PiPes, accessories and fittings Pol ybutylene PiPe for hea ting and cooling distribution systems r986 and r986s Guarantee All products and components supplied by Giacomini S.p.A. are subjected to the European norms in force as regards to guarantee and responsibility (1994/44/CE Directive, 2001/95/CE Directive and CEE 85/374). The guarantee is not valid in the following cases: 1. If the working conditions are different from the prescribed ones; 2. If the pipes are used to distribute fluids that are not compatible with the material; 3. If the installation instructions are not scrupulously followed; 4. In at the installation time, during the laying phase or at the pressure testing of the system, the pipes shows visually perceivable defects caused by accidental factors. Reference standards

  • DIN 16968
  • DIN 16837 ADD ON EN ISO 15875 Table 1 - Classification of the working conditions The performance requirements for pipe systems complying with EN ISO 15875 are specified for a project operation lifetime of 50 years. Application range Toper. [°C] Time at Toper. [years] Tmax [°C] Time at Tmax [years] Tmal [°C] Time at Tmal [h] Class 4 Floor heating and low temperature radiators plus plus 2,5 plus plus 70 2,5 100 100 Class 5 Heating with high temperature radiators plus plus plus plus 90 1 100 100
  • Operating temperature (Toper.): operating temperature envisaged for the application field, expressed in °C.
  • Max operating temperature (Tmax): highest value of the operating temperature, allowed for a short period of time only.
  • Malfunctioning temperature (Tmal): the highest temperature value that can occur when the control systems are not working (the time period and allowed temperature for this value is 100 h in a period of 50 years of continuous operation). For each application class, maximum usage pressure can be evinced from the table below: SIZE CLASS 4 CLASS 5 12 x 1,5 10 bar 8 bar 16 x 1,5 10 bar 8 bar 16 x 2,0 10 bar 10 bar 18 x 2,0 10 bar 10 bar 22 x 2,0 10 bar 8 bar All pipes are suitable to the transport of water for a period of 50 years at a temperature of 20°C and an operating pressure of 10 bar. All heating systems shall use as transfer fluid only water or treated water. Additional information For additional information please check the website www.giacomini.com or contact the technical service: ' +39 0322 923372 6 +39 0322 923255 * consulenza.prodotti@giacomini.com This pamphlet is merely for information purposes. Giacomini S.p.A. retains the right to make modifications for technical or commercial reasons, without prior notice, to the items described in this pamphlet. The information described in this technical pamphlet does not exempt the user from following carefully the existing regulations and norms on good workmanship. Giacomini S.p.A. Via per Alzo, 39 - 28017 San Maurizio d’Opaglio (NO) Italy