KIWA Covenant K90465/02 Issued: 01-01-2017 STATEMENT BY KIWA This Covenant of Kiwa ascertains that the: Raxinox multilayer piping system of stainless steel pipes with plastic covering and stainless steel/plastic composite press fittings for sanitary applications dimensions 16 x 2,2 mm and 20 x 2,8 mm as manufactured by Viega Technology GmbH & Co. KG are tested for the transport of hot and cold drinking water inside buildings for application classes 1 and 2 according to ISO 10508 and an operating pressure of maximum 10 bar. The requirements and validation methods, including the prescribed inspections and marking of the products are embodied in this Kiwa Covenant. Luc Leroy Kiwa Publication of the Covenant is allowed. The Covenant is only valid in combination with the Kiwa Hygienic Aspects certificate number K90527. Advice: consult www.kiwa.nl in order to ensure that this Covenant is still valid. Kiwa Nederland B.V. Sir Winston Churchilllaan 273 Postbus 70 2280 AB RIJSWIJK The Netherlands Tel. +31 88 998 44 00 Fax +31 88 998 44 20 info@kiwa.nl www.kiwa.nl Supplier and holder of the covenant: Viega Technology GmbH & Co. KG Viega Platz 1 57439 Attendorn Germany T +49(0)2722 / 61-0 F +49(0)2722 / 61-1415 E info@viega.de I www.viega.de
PREFACE This Covenant has been prepared by the Technical Committee Multilayer piping systems of Kiwa Nederland B.V. and accepted by the KKC Evaluation Group. This KCC Evaluation Group also supervises the certification activities and where necessary requires the Covenant to be revised. All references to the Technical Committee and KKC Evaluation Group in this evaluation guideline pertain to the above mentioned Technical Committee and KKC Evaluation Group. This Covenant will be used by Kiwa in conjunction with the Kiwa Covenant Regulations. These regulations detail the methods employed by Kiwa for conducting the necessary investigations prior to issuing the Covenant and the method of external control. The Covenant certification system, procedures and proceedings are explained and detailed in the Kiwa Covenant Guideline. Kiwa Nederland B.V. - 2-1 January 2017
Table of contents 1 Scope of the Kiwa Covenant 1.1 Definition of the piping system 1.2 Intended use of the piping system 1.3 Assumed working life of the piping system 1.4 Procedure in the case of a significant deviation from the Kiwa Covenant 2 Fitness for use 2.1 Meaning of "fitness for use" 2.2 Assessment of fitness for use 3 Relevant characteristics of the piping system, required verification methods and assessment of fitness for use 3.1 Safety in case of fire 3.2 Influence of water intended for human consumption 3.3 Raw materials of the pipes 3.4 Characteristics of the pipes 3.5 Raw materials of the fittings 3.6 Characteristics of the fittings 3.7 Characteristics of the piping system (tightness of the jointing) 4 Factory production control (FPC) 5 Initial inspection and continuous surveillance by Kiwa 6 Marking of the products 7 Assumptions under which the fitness for the intended use is assessed 7.1 Manufacture of the product 7.2 Packaging, transport, storage of the product 7.3 Installation of the product in the works 7.4 Use, maintenance, repair 8 Reference documents Kiwa Nederland B.V. - 3-1 January 2017
1 SCOPE OF THE KIWA COVENANT 1.1. Definition of the piping system The Raxinox piping system consists of a: - medium transporting inner pipe made of stainless steel provided with a solid fixed smooth outer covering layer of PE-RT (polyethylene of raised temperature resistance), and: - stainless steel/ppsu composite press fittings. The build-up of the pipes, including dimensions and tolerances of the different layers, are laid down in the technical drawing(s) between Viega and Kiwa. The build-up of the fittings, including explanation of the different parts, the dimensions and tolerances, are laid down in the technical drawing(s) between Viega and Kiwa. The dimensions of the piping system are: 16 x 2,2 mm and 20 x 2,8 mm. 1.2 Intended use of the piping system The Raxinox piping system is intended to be used for sanitary drinking water applications inside buildings. The piping system shall be used up to an operating pressure of 10 bar and with a permanent operating temperature of maximum 70 C and a short-time operating temperature of maximum 95 C (application classes 1 and 2 according to ISO 10508), see table 1. Table 1 Temperature profile during 50 years Application class Operating temperature Maximum temperature Malfunction temperature Typical field of application 1 60 C for 49 years 80 C for 1 year 95 C for 100h Hot water supply 2 70 C for 49 years 80 C for 1 year 95 C for 100h Hot water supply Remark: the mentioned temperature profiles are in accordance with class 1 and 2 of ISO 10508. The aspect on the characteristic effect on the quality of water intended for human consumption is addressed on the basis of the following Dutch and German legislation for drinking water applications: - Kiwa ATA (attest toxicological aspects); - KTW-Leitlinie; - DVGW W270; - UBA list Acceptance of metallic materials used for products in contact with drinking water for stainless steel material; 1.3 Assumed working life of the piping system The provisions and the verification and assessment methods included or referred to in this Kiwa Covenant have been written based upon the assumed working life of the Raxinox piping system for the intended use of 50 years when installed in the works. These provisions are based upon the current state of the art and the available knowledge and experience. "Assumed working life" means that, when an assessment following the Kiwa Covenant provisions is made, and when this working life has elapsed, the real working life may be, in normal use conditions, considerably longer without major degradation affecting the requirements. 1 1 The real working life of a product incorporated in a specific works depends on the environmental conditions to which that works is subject and the particular conditions of the design, execution, use and maintenance of that works may be outside this Covenant. Therefore, it cannot be excluded that in these cases the real working life of the product may also be shorter than the assumed working life. Kiwa Nederland B.V. - 4-1 January 2017
The indications given as to the working life of the construction product cannot be interpreted as a guarantee given by the product manufacturer or his representative or Kiwa Nederland B.V. issuing the Kiwa Covenant, but are regarded only as a means for choosing the appropriate products in relation to the expected economically reasonable working life of the works. 1.4 Procedure in the case of a significant deviation from the Kiwa Covenant In cases in which the in works installed Viega Galaxy piping system does not comply to the requirements of the Kiwa Covenant, the complaint and appeal procedure according chapter 17 of to the Kiwa Covenant Regulations 2013 is applicable. 2 FITNESS FOR USE 2.1 Meaning of "fitness for use" "Fitness for (the intended) use" of the piping system means that the products have such characteristics that, the Raxinox piping system, if properly designed and built, can, 1. satisfy the requirements of this Kiwa Covenant and 2. be fit for their intended use and in this connection satisfy the requirements of this Kiwa Covenant, if normally maintained. 2.2 Assessment of fitness for use The relevant characteristics of the piping system for its fitness for use (requirements) and the required verification methods to be employed are given in chapter 3, as well as the actual performed assessment of fitness for use and proven conformance to the relevant characteristics of the piping system and its components. 3 RELEVANT CHARACTERISTICS OF THE PIPING SYSTEM, THE REQUIRED VERIFICATION METHODS AND THE ASSESSMENT OF FITNESS FOR USE 3.1 Reaction to fire 3.1.1 Requirement The products shall be classified according to EN 13501-1:2002. This requirement is not applicable for the stainless steel/ppsu composite press fittings 1). 3.1.2 Method of verification The pipes shall be tested, using the test method relevant to the corresponding reaction to fire class E, in order to be classified according to EN ISO 11925-2. 3.1.3 Assessment After testing the products have fulfilled the requirements for class E (MPA NRW test report number 230010200-2). 1) The PPSU composite parts of the fittings are very thin. Therefore it may be assumed that these parts in connection with the pipe do not make any contribution to fire growth or to the fully developed fire and they have no influence to smoke hazard. In the context of this end use application of the stainless steel/ppsu composite press fittings can be considered to satisfy any reaction to fire requirements. The stainless steel parts of the press fittings are considered to satisfy the requirements for performance class A1 of the characteristic reaction to fire without the need for testing. Kiwa Nederland B.V. - 5-1 January 2017
3.2 Influence of water intended for human consumption 3.2.1 Requirement and method of verification Kiwa ATA approval The pipes and fitting parts which come into contact with water, drinking water or warm tap water, are not allowed to release substances in such quantities which can jeopardise the health of the consumer or the quality of the drinking water. For that, the mentioned products have to meet the toxicological, microbiological and organoleptical requirements which are laid down in the valid Dutch Ministerial Regulation materials and chemicals drinking waterand warm tap water supply (published in the government Gazette). The procedure for obtaining a recognised ATA quality declaration, as meant in the valid Regulation, has to be concluded with positive results for the pipes, fittings and rubber sealing rings concerned. KTW, UBA-list and DVGW W270 The fitting parts made of plastics which come into contact with water, drinking water or warm tap water, must be hygienically unsuspected. They may not release substances that influence the toxicology, the taste, odour and colour of the drinking water. For that, the fitting parts made of plastics shall comply to the Leitlinie for the implementation of KTW recommendations by UBA. The requirements according to DVGW W 270 (A) do comply as well.. For each stainless steel material used a specific raw material specification by means of a test certificate or report according 3.1 of EN 10204 shall be provided. The receipt of each material shall comply to the valid positive lists as mentioned in the UBA-list. 3.2.3 Assessment After toxicological evaluation and hygienic testing, the products do fulfill the requirements for Kiwa-ATA, KTW and W270 as follows: - Kiwa ATA approval for the pipes and fittings (approval nr: K90527) - KTW for fitting PPSU parts (Hygiene Institut report nr K-247004-14-ko dated 14-8-2014) - W270 for fitting PPSU parts (report nr W-225984e-13-SI dated 5-2-2013) All metal parts in contact with drinking water do comply with the valid positive lists as mentioned in the UBA-list. 3.3 Raw materials of the pipes 3.3.1 Stainless steel stress bearing layer 3.3.1.1 Composition 3.3.1.1.1 Requirement The conformity of the supplied stainless steel is assessed according to EN 10088-2, clause 7.2. 3.3.1.1.2 Method of verification Evidence by means of a test certificate according 3.1 of EN 10204. 3.3.1.1.3 Assessment According 3.1 certificate the applied stainless steel is type 1.4435. 3.3.2 Adhesive layer 3.3.2.1 Peak melting temperature 3.3.2.1.1 Requirement The minimum peak melting temperature shall be 115 C. 3.3.2.1.2 Method of verification The peak melting temperature (in C) of the adhesive shall be determined in accordance with ISO 11357-3. 3.3.2.1.3 Assessment According 3.1 certificate the peak melting temperature is > 115 C. Kiwa Nederland B.V. - 6-1 January 2017
3.3.2.2 Oxygen induction time (isothermal OIT) 3.3.2.2.1 Requirement The isothermal OIT of the adhesive raw material shall be in accordance with the specification of the supplier. 3.3.2.2.2 Method of verification The oxygen induction time (in minutes) of the adhesive shall be determined in accordance with ISO 11357-6. 3.3.2.2.3 Assessment The isothermal OIT is specified in 3.1 certificate. 3.3.2.3 Temperature index (thermal stability) 3.3.2.3.1 Requirement The temperature index (T 50y, Є tb=25%) via tensile testing shall be at least 70 C. 3.3.2.3.2 Method of verification The temperature index (in C) of the adhesive shall be determined in accordance with ISO 2578 via tensile testing according to ISO 527/6259 (Є tb, 110 C, 1y>25%) 3.3.2.3.3 Assessment After testing the adhesive have fulfilled the requirements for temperature index (SKZ test report 84471/08 and 86296/09). 3.3.3 Polyethylene-RT outer layer 3.3.3.1 Material and melt mass flow rate 3.3.3.1.1 Requirement The outer layer shall consist of PE-RT type II according ISO 24033. The MFR of the PE-RT raw material shall be in accordance with the specification of the supplier. Clean own re-processable material which is the same as the virgin material may be added to that virgin material. External re-processable material shall not be used. 3.3.3.1.2 Method of verification The melt mass flow rate (MFR) shall be determined in accordance with EN-ISO 1133-1. 3.3.3.1.3 Assessment Only PE-RT type II is used. The MFR is specified in 3.1 certificate. 3.3.3.2 Oxidation induction time (isothermal OIT) 3.3.3.2.1 Requirement The isothermal OIT of the PE-RT raw material shall be in accordance with the specification of the supplier. 3.3.3.2.2 Method of verification The isothermal OIT (in minutes) of the PE-RT material shall be determined in accordance with ISO 11357-6. 3.3.3.2.3 Assessment The OIT is specified in 3.1 certificate. 3.3.3.3 Density 3.3.3.3.1 Requirement The density of the PE-RT raw material shall be in accordance with the specification of the supplier. 3.3.3.3.2 Method of verification The density shall be determined in accordance with EN-ISO 1183-1 at a temperature of 23 C. The number of test pieces shall conform to EN-ISO 1183-1. 3.3.3.3.3 Assessment The density is specified in 3.1 certificate Kiwa Nederland B.V. - 7-1 January 2017
3.4 Characteristics of the pipes 3.4.1 Surface condition 3.4.1.1 Requirement The inside and outside of the pipes shall be smooth without any flaws. The weld seam shall be regular without visible damage(s). 3.4.1.2 Method of verification By visual inspection. 3.4.1.3 Assessment After visual inspection the pipes have fulfilled the requirements (MPA NRW test report 3.4.2 Geometrical characteristics 3.4.2.1 Requirement The dimensions of the pipes (in mm) shall fulfil the specifications and tolerances as laid down in the technical drawing(s) between Viega and Kiwa. 3.4.2.2 Method of verification The dimensions of the pipe (in mm) shall be measured in accordance with EN-ISO 3126. In the case of dispute the measurements of dimensions shall be made not less than 24h after manufacturing and after being conditioned for at least 4h at (23 + 2) C. The following dimensions are measured: Mean outside diameter : D em (in mm) Mean inside diameter : D im (in mm) Out-of-roundness : ovality (in mm) Overall wall thickness : e (in mm) Thickness and tolerance of the stainless steel and adhesive layers : e L 3.4.2.3 Assessment After measuring, the pipes have fulfilled the requirements (MPA NRW test report number 120004604) for the piping system dimensions 16 x 2,2mm and 20 x 2,8mm 3.4.3 Pressure strength (long-term pressure strength and design pressure strength) 3.4.3.1 Requirement The design pressure strength (p D) of the pipes shall be at least 10 bar. 3.4.3.2 Method of verification The design pressure strength (p D) is derived from the long-term pressure strength (p LPL), taking in account the application classes 1 and 2 and the overall design coefficients given in the relevant product standards of the outer layer material (see annex B of ISO 21003-2). The long-term pressure strength (p LPL) of multilayer pipes shall be measured (procedure II) as defined in ISO 17456. The test parameters and test pressures as defined in DIN 16887 shall be fulfilled as well. 3.4.3.3 Assessment The calculated design pressure strength (p D) of the applicable pipes is larger than 10 bar (Kiwa test reports LC9620 and LC11048). 3.4.4 Homogeneity of the weld seam 3.4.4.1 Requirement The homogeneity of the weld seam is characterized by shape, absence of holes and other irregularities limiting the performance of the system. Because of statistical occurrence of such irregularities, the homogeneity of the weld seam shall be monitored continuously during the welding process. 3.4.4.2 Method of verification and assessment The homogeneity of the weld seam is covered by the resistance to inner water pressure tests performed under 3.4.3. Kiwa Nederland B.V. - 8-1 January 2017
3.4.5 Delamination 3.4.5.1 Requirement The pipes shall comply to the requirements as listed in table 2 below. Table 2 Delamination resistance Requirement Conditioning pieces method Fpull > 30 N/cm Before and after conditioning in accordance with EN 12293 a ISO 17454 ISO 17454 a Using the test parameters of application class 2 (see ISO 21003-5:2008, table 5) 3.4.5.2 Method of verification See table 2. 3.4.5.3 Assessment After testing the pipes have fulfilled the requirements (MPA NRW test report 3.4.6 Bending behaviour at low temperatures 3.4.6.1 Requirement The correlation between bending radius and the occurance of irregularities like folds, cracks or buckles shall be verified. With the bending radius to be specified, no cracks or folds shall be visible to the unaided eye, corrected for normal vision, if necessary. 3.4.6.2 Method of verification The correlation between bending radius and the occurance of irregularities is assessed by bending tests using a form/template as shown In EN ISO 3503, figure 1. Comparison test ing shall be performed with the smallest bending radius and a reference showing the most critical pattern of irregularities on the inner surface of the pipe, both as specified by Viega. The sequence of testing is defined as follows: a. 3 straight specimens per nominal dimension shall be conditioned for > 2 hours at (0 + 1) C; b. Each specimen shall be bent to an angle of > 90 at the specified smallest radius uning the form/template shown in figure 1 of EN ISO 3503; c. Relax the bent specimen for > 30 seconds; d. The specimens following step 3 shall be bent in the reverse direction for > 20. All the above steps 2 4 shall be performed within one minute. Following bending step 4, the bent pipe shall immediately be visually compared with the specified reference. The test report shall state at least: a. whether the bent samples show more critical irregularities compared to the reference or not; b. the smallest bending radius as specified by Viega and; c. the reference showing the most critical pattern of irregularities as specified by Viega. 3.4.6.3 Assessment The minimum bending radius is 4 x DN. After testing the pipes have fulfilled the requirements (MPA NRW test report 3.4.7 Behaviour under bending stress 3.4.7.1 Requirement The correlation between bending radius and internal pressure resistance shall be verified. Kiwa Nederland B.V. - 9-1 January 2017
3.4.7.2 Method of verification The correlation between bending radius and resistance to internal pressure is assessed by using a form/template as shown in figure 1 of EN ISO 3505. The test shall be performed with the smallest bending radius as specified by Viega. The bent pipe shall be exposed to internal pressure according to EN ISO 1167-1. The sequence of bending tests is defined as follows. a. 3 straight specimens per nominal dimension shall be conditioned for > 2 hours at (23 + 2) C; b. Each specimen shall be bent to an angle of > 90 at the specified smallest radius uning the form/template shown in figure 1 of EN ISO 3503; c. Relax the bent specimen for > 30 seconds; d. The specimens following step 3 shall be bent in the reverse direction for > 20. All the above steps 2 4 shall be performed within one minute. Following bending step 4, the bent pipe shall be exposed to internal pressure resistance according to EN ISO 1167-1 and the test conditions given in table 3. The test report shall state at least: a. whether the bent samples exposed to internal pressure exceed 5 minutes time to failure or not; b. the smallest bending radius as specified by Viega Table 3 conditions for behaviour under bending stress temperature C pressure bar Number of test pieces 23 40 3 3.4.7.3 Assessment The minimum bending radius is 4 x DN. After testing the pipes have fulfilled the requirements (MPA NRW test report 3.4.8 Thermal stability of the outer layer 3.4.8.1 Requirement After testing according to 3.4.8.2, the tested pipe shall not show any failure or leakage during the specified test period. 3.4.8.2 Method of verification The monolayer of the outer layer pipe is tested by the procedure specified in ISO 1167-1 and ISO 1167-2, using the test parameters given in table 4 below. Table 4 conditions for thermal stability of the outer layer temperature C Storage medium time h Design stress MPa Number of test pieces 110 Water in air 8760 2,3 3 3.4.8.3 Assessment After testing the pipes have fulfilled the requirements (Kiwa test report KL6540 and KL9898). 3.4.9 Thermal durability of the outer layer 3.4.9.1 Requirement After testing according to 3.4.9.2, no cracks shall be visible in the outer layer by the naked eye. Kiwa Nederland B.V. - 10-1 January 2017
3.4.9.2 Method of verification The thermal durability of the outer layer shall be determined in accordance with Annex C of ISO 21003-2, using the test parameters given in table 5 below. Table 5 conditions for thermal durability of the outer layer temperature Storage medium time Number of test pieces C h 110 air 8760 3 3.4.8.3 Assessment After testing the pipes have fulfilled the requirements (Kiwa test report LC11333-1 and LC11333-2). 3.5 Raw materials of the fittings 3.5.1 Stainless steel fitting body 3.5.1.1 Requirement The conformity of the supplied stainless steel is assessed according to EN 10088-2, clause 7.2, EN10088-3, clause 7.2 or EN10283, clause 8. 3.5.1.2 Method of verification Evidence by means of a test certificate according 3.1 of EN 10204. 3.5.1.3 Assessment According 3.1 certificate the applied stainless steel are types 1.4401/1.4404 or 1.4408. 3.5.2 PPSU fitting components 3.5.2.1 Requirement The raw material(s) used for the manufacturing of the PPSU components shall be suitable for their intended use. This means that the long-term strength shall be at least equal to the design stress in table 6 according to DIN 16838. Table 6 design stress for PPSU class Design stress [MPa] 1 15,00 2 13,32 20 C/50years 27,09 Clean own re-processable material which is the same as the virgin material may be added to that virgin material. External re-processable material shall not be used.3.5.2.2 Method of verification The long-term strength shall be determined in accordance with ISO 1167-series. and with the help of ISO 9080.3.5.2.3 Assessment After testing the PPSU material does fulfil the long-term strength requirements (SKZ reports 47730 and 90853/10/IV). 3.6 Characteristics of the fittings 3.6.1 Surface condition 3.6.1.1 Requirement The inside and outside surface of the fittings shall be smooth without any flaws. 3.6.1.2 Method of verification By visiual inspection 3.6.1.3 Assessment Kiwa Nederland B.V. - 11-1 January 2017
After visual inspection the fittings have fulfilled the requirements (MPA NRW test report 3.6.2 Geometrical characteristics and construction 3.6.2.1 Requirement The dimensions of the fittings (in mm) shall fulfil the specifications and tolerances as laid down in the technical drawing(s) between Viega and Kiwa 3.6.2.2 Method of verification The dimensions of the fittings (in mm) shall be measured in accordance with EN-ISO 3126. In the case of dispute the measurements of dimensions shall be made not less than 24h after manufacture and after being conditioned for at least 4h at 23 C. 3.6.2.3 Assessment After measuring, the fittings have fulfilled the requirements (MPA NRW test report 3.6.3 Strength of PPSU support body 3.6.3.1 Requirement The PPSU support body shall be resistant to internal hydraulic pressure. After testing, the PPSU support body shall not leak and show no signs of breakage or cracks. 3.6.3.2 Method of verification When the PPSU support body is tested by the procedure specified in ISO 1167-1, preparing the test pieces in accordance with ISO 1167-3 and using the test paramaters, where the test pressure is given in relation to the class of fitting and the design pressure in table 7. Table 7 conditions for the internal pressure test: temperature Storage medium ing time Design Pressure pd Design stress σdf Hydrostatic stress σf Pressure pf C h bar MPa MPa bar 20 Air or 1 57,1 42,9 3 10 13,32 95 water 1.000 21,3 16,0 3 Number of test pieces The test pressure is calculated after the following equation: F p F = p D DF where pf is the hydrostatic test pressure, to be applied to the plastic support body during the test period; F is the value of the hydrostatic stress, for the plastic support body material, as determined for the appropriate service condition class from data produced in accordance with the reference product standard DIN16838; DF is the design stress value, for the plastic support body material, as determined for the appropriate service condition class from data produced in accordance with the reference product standard DIN16838; pd is the applicable design pressure. Fittings may be connected to the pipes with which they are intended to be used. Other methods may also be used to seal the ends of the plastic support body in order that the required pressure can be applied. 3.6.3.3 Assessment After testing the fittings have fulfilled the requirements (MPA NRW test report Kiwa Nederland B.V. - 12-1 January 2017
3.7 Characteristics of the piping system (tightness of the jointing) 3.7.1 Resistance to vacuum 3.7.1.1 Requirement When tested for leaktightness under vacuum in accordance with 3.7.1.2, the change in vacuum pressure shall not be greater than 0,05 bar. 3.7.1.2 Method of verification Three test pieces per diameter shall be tested in accordance with EN 12294, using the test parameters as given in table 8. Table 8 conditions for resistance to vacuum temperature pressure time Number of test pieces C bar h 23 ± 2-0,8 1 3 3.7.1.3 Assessment After testing the piping system has fulfilled the requirements (MPA NRW test report 3.7.2 Resistance to pressure cycling 3.7.2.1 Requirement When tested for leaktightness under the action of pressure cycling in accordance with 3.7.2.2 and maximum pressure of 25 bar, the pipes, fittings and joints shall not leak. 3.7.2.2 Method of verification Three test pieces per diameter shall be tested in accordance with EN 12295, using the test parameters as given in table 9. temperature C Table 9 conditions for resistance to pressure cycling Frequency Pressure Pressure Number of pressure upper limit lower limit of cycles cycling bar bar 23 ± 2 (30 ± 5) cycles per minute Number of test pieces 25 0,5 10.000 3 3.7.2.3 Assessment After testing the piping system has fulfilled the requirements (MPA NRW test report Kiwa Nederland B.V. - 13-1 January 2017
3.7.3 Resistance to temperature cycling 3.7.3.1 Requirement When tested for leaktightness under the action of temperature cycling in accordance with 3.7.3.2, the pipes, fittings and joints shall withstand the test without leakage. 3.7.3.2 Method of verification One test assembly per diameter shall be tested in accordance with EN 12293, using the test parameters as given in table 10. Lowest test temperature C Table 10 conditions for resistance to temperature cycling Highest test Number Number of test pieces temperature pressure of cycles a C bar 20 ± 5 90 ± 2 10 5.000 One set of fittings with the configuration shown in EN 12293 a Each cycle shall comprise 15 minutes at the highest test temperature interval and 15 minutes at the lowest test temperature interval (i.e. the duration of one cycle is 30 minutes) 3.7.3.3 Assessment After testing the piping system has fulfilled the requirements (MPA NRW test report 3.7.4 Strength of the joints 3.7.4.1 Requirement When tested for pressure testing in accordance with 3.7.4.2 the joint assemblies shall not leak. 3.7.4.2 Method of verification One test assembly per diameter shall be tested in accordance with the relevant parts of ISO 1167, using the test parameters as given in table 11. Table 11 conditions for strength of the joints temperature pressure time Number of test pieces C bar h 95 ± 1 25 1.000 3 3.7.4.3 Assessment After testing the piping system has fulfilled the requirements (MPA NRW test report 3.7.5 Resistance to pull-out 3.7.5.1 Requirement When tested in accordance with 3.7.5.2, the joint assemblies shall withstand the pull-out force without being separated. 3.7.5.2 Method of verification Three test pieces per diameter shall be tested in accordance with EN ISO 3501, using the test parameters as given in table 12. Table 12 conditions for resistance to pull-out External pipe diameter temperature C time 23 ± 2 90 ± 2 Nominal size mm force N H Number of pieces 16 500 260 1 3 20 800 410 1 3 Kiwa Nederland B.V. - 14-1 January 2017
3.7.5.3 Assessment After testing the piping system has fulfilled the requirements (MPA NRW test report 3.7.6 Resistance to bending 3.7.6.1 Requirement When tested in accordance with 3.7.6.2, using a bending radius of 4 x d n, the joint shall not leak. 3.7.6.2 Method of verification Three test pieces per diameter shall be tested in accordance with EN ISO 3503, using the test parameters as given in table 13. Table 13 conditions for resistance to bending temperature pressure Bending radius time h Number of test pieces C bar 20 ± 2 25 4 x dn 1 3 3.7.6.3 Assessment After testing the piping system has fulfilled the requirements (MPA NRW test report 3.7.7 Leak path protection functionality 3.7.7.1 Requirement Leak path protection functionality in the non-pressed situation, shall be clearly not-leak tight when tested according to 3.7.7.2. 3.7.7.2 Method of verification It shall be verified whether the piping system is leaking or not in the non-pressed and pressed situation. The leak path protection functionality shall be assessed with a test set up of different fitting components (e.g. elbows, tees, couplings). In total 20 fitting components have to be connected with pipe and pressure tested. The assembly may not slip apart due to unpressed fitting components. First, the assembly is tested under water with pressurized air using the test pressures given in table 14. Each test pressure is held for > 10 seconds. The test report shall state at least the average air bubble number per second at each test pressure. Second, the fitting components in the already tested assembly will be pressed. This assembly is then filled with water. The test report shall also state, whether the pressed, water-filled assembly shows leaking when being pressurized according to the test conditions given in table 15. Table 14 conditions for leak path protection, unpressed medium pressure Criteria Air 110 mbar One or more rising air bubbles per second Air 1,0 bar One or more rising air bubbles per second Air 6,0 bar One or more rising air bubbles per second Water 1,0 bar One or more falling drops per second Water 6,0 bar One or more falling drops per second Table 15 conditions for leak path protection, pressed temperature C pressure bar time h 20 + 6 /- 5 25 1 Kiwa Nederland B.V. - 15-1 January 2017
3.7.7.3 Assessment After testing the piping system has fulfilled the requirements (MPA NRW test report Kiwa Nederland B.V. - 16-1 January 2017
4 FACTORY PRODUCTION CONTROL (FPC) For ensuring the appropriate quality during production of the products concerned, Viega has implemented a factory production control (FPC) under the umbrella of a quality management system according to EN ISO 9001. The extent of the FPC is shown in table 16 below. Table 16 Requirements for factory production control (internal quality control) Characteristic Article FPC Frequency Reaction to fire 3.1 - - Influence of water 3.2 - - Raw materials of the pipes Stainless steel: composition 3.3.1 X (supplier specification) Each delivery Adhesive layer: melting temp. 3.3.2.1 X (supplier specification) Each delivery Adhesive layer: OIT 3.3.2.2 X (supplier specification) Each delivery PE-RT outer layer: MFR 3.3.3.1 X (supplier Each delivery specification) PE-RT outer layer: OIT 3.3.3.2 X (supplier specification) Each delivery PE-RT outer layer: Density 3.3.3.3 X (supplier specification) Each delivery Characteristics of the pipes Surface condition 3.4.1 X Continuously, with recording every two hours Geometrical characteristics 3.4.2 X (exluding thickness of individual Per drum layers) Pressure strength 3.4.3 X (165h / 95 C) 1x per week or batch Homogeneity of the weld seam 3.4.4 X Continuously, with recording every two hours Delamination 3.4.5 X 1x per week or batch Bending in cold condition 3.4.6 X 1x per week or batch Bending stress 3.4.7 - - Thermal stability outer layer 3.4.8 - - Thermal durability outer layer 3.4.9 - - Raw materials of the fittings Stainless steel fitting body: composition 3.5.1 X (supplier specification) 3.5.2 X (supplier specification) Each delivery PPSU fitting components: composition Each delivery Characteristics of the fittings Surface condition 3.6.1 X Continuously, with recording every eight hours Geometrical characteristics 3.6.2 X Every day Strength fitting body 3.6.3 X (1h / 20 C) 1x per week or batch Strength fitting body 3.6.3 X (1.000h / 95 C) 1x per year per Dimension Kiwa Nederland B.V. - 17-1 January 2017
Continuation of table 16 Characteristics of the piping system Vacuum 3.7.1 - - Pressure cycling 3.7.2 - - Temperature cycling 3.7.3 - - Strength of the joints 3.7.4 X 1x per year per diameter Pull-out 3.7.5 - - Bending 3.7.6 - - Leak path protection functionality 3.7.7 - - Marking 6 X Every shift Registrations of the FPC performed are made and kept for a minimum of 10 years. These registrations indicate the type of assessments and tests, the amount of tests and samples, the test results as well as date of production and testing. Procedures for maintenance of the production machines, entry-control raw materials, production, FPC and testing, calibration of measuring instruments, storage, non-conforming products and customer complaints are available. 5 INITIAL INSPECTION AND CONTINUOUS SURVEILLANCE BY KIWA Within the scope of pre-certification tests, Kiwa has ascertained at Viega s works whether the manufactured products meet the quality requirements and technical specifications as laid down in this Covenant. Hereby: - samples were taken in the producer s works by and on the instructions of Kiwa and were tested in the Kiwa laboratories in Apeldoorn; - samples were tested in the laboratory of Viega s works with calibrated equipment available and under supervision of the Kiwa inspector; - it was assessed whether the production processes used by Viega offers sufficient confidence that the manufactured products are of a constant quality; - whether Viega has an FPC in place which ensures that any nonconformities are spotted in timeand that, if necessary, corrective actions are taken; - whether Viega has implemented adequate procedures in respect of the following aspects: - maintenance of the production machines, entry-control raw materials, production, FPC and testing, calibration of measuring instruments, storage, non-conforming products and customer complaints. The following Viega works (production locations) were ascertained: Pipe production in Niederwinkling (Germany)on 15 October 2015. Fitting PPSU production in Elspe (Germany) on 14 October 2015. Fitting assembly in Ennest (Germany) on 14 October 2015. Within the framework of this Covenant agreement Kiwa carries out inspections at regular intervals of two times per year to the production locations as mentioned in 7.1, to ensure that Viega complies with her obligations. The inspections are carried out by Kiwa employees and include: - inspections to ascertain whether the product specification laid down in the Covenant is being complied with; - inspections of the production process; - - ; - inspections of the FPC (IQC scheme) in use and the results of the tests recorded by Viega Kiwa Nederland B.V. - 18-1 January 2017
- inspections to ascertain whether the products are marked correctly; - inspections to ascertain whether Viega is complying with the procedures for dealing with complaints and taking corrective actions. The following characteristics of the piping system are subject to external quality control by Kiwa including testing in the Kiwa laboratories, see table 17. Table 17 Requirements for external quality control Characteristic Article External control Frequency Reaction to fire 3.1 - - Influence of water 3.2 X 1x per year Raw materials of the pipes Stainless steel: composition 3.3.1 X (supplier specification) 1x per year Adhesive layer: melting temp. 3.3.2.1 X (supplier specification) 1x per year Adhesive layer: OIT 3.3.2.2 X (supplier specifica- 1x per year tion) PE-RT outer layer: MFR 3.3.3.1 X (supplier specification and measurement) 1x per year (MFR measurement in Viega laboratory) 1x per year PE-RT outer layer: OIT 3.3.3.2 X (supplier specification) PE-RT outer layer: Density 3.3.3.3 X (supplier specification) 1x per year Characteristics of the pipes Surface condition 3.4.1 X 1x per year Geometrical characteristics 3.4.2 X 1x per year Pressure strength 3.4.3 X(1.000h / 95 C) 1x per year Homogeneity of the weld seam 3.4.4 - - Delamination 3.4.5 X 1x per year in Kiwa laboratory Bending in cold condition 3.4.6 - - Bending stress 3.4.7 - - Thermal stability outer layer 3.4.8 - - Thermal durability outer layer 3.4.9 - - Raw materials of the fittings Stainless steel fitting body: composition 3.5.1 X (supplier specification) 3.5.2 X (supplier specification) 1x per year PPSU fitting components: composition 1x per year Characteristics of the fittings Surface condition 3.6.1 X 1x per year Geometrical characteristics 3.6.2 X 1x per year Strength fitting body 3.6.3 X(1.000h / 95 C) 1x per year (in combination with 3.4.3 if possible) Kiwa Nederland B.V. - 19-1 January 2017
Continuation of table 17 Characteristics of the piping system Vacuum 3.7.1 - - Pressure cycling 3.7.2 - - Temperature cycling 3.7.3 - - Strength of the joints 3.7.4 X(1.000h / 95 C) 1x per year (in combination with 3.4.3 if possible) Pull-out 3.7.5 - - Bending 3.7.6 - - Leak path protection functionality 3.7.7 - - Marking 6 X 1x per year 6 MARKING OF THE PRODUCTS Pipes The pipes are marked with the Kiwa Covenant word mark. The minimum required marking on the pipes shall be: - Kiwa word mark + class 2 / 10 bar; - The Kiwa water mark: - The manufacturer s name, the system name and Kiwa Covenant number; - Material identification of the build-up of the pipes: stainless steel / PE-RT; - Nominal outside diameter and nominal wall thickness of the pipe in mm; - Production code. The realization of the marks is as follows: durable and indelible at intervals of not more than 1 m. Fittings The minimum required marking on the fittings shall be: - Kiwa word mark (if not possible, then on the smallest packaging); - The Kiwa water mark (if not possible, then on the smallest packaging): - The manufacturer s name or trade name or system name; - Nominal outside diameter of the corresponding pipe in mm; - Production code. The minimum required marking on the smallest packaging unit of the fittings shall be: - Kiwa word mark (if not possible, then on the smallest packaging); - The Kiwa water mark: - The manufacturer s name, the system name and Kiwa Covenant number; - Nominal outside diameter and wall thickness of the corresponding pipe in mm; - Material identification of the fitting body. The realization of the marks is as follows: durable and indelible on each fitting/packaging. Kiwa Nederland B.V. - 20-1 January 2017
7 ASSUMPTIONS UNDER WHICH THE FITNESS FOR THE INTENDED USE IS AS- SESSED 7.1 Manufacture of the product The end-manufacturing of the pipes and fitting parts take place at the following production locations. pipe: Viega GmbH & Co. KG factory Niederwinkling Bernrieder Strasse 12 94559 Niederwinkling Germany fitting: Viega GmbH & Co. KG or Viega GmbH & Co. KG factory Großheringen factory Ennest Am Mühlberg 4 Zum langen Acker 7 99518 Großheringen 57439 Attendorn Germany Germany Viega GmbH & Co. KG factory Elspe Bielefelder Strasse 94 57368 Lennestadt-Elspe Germany 7.2 Packaging, transport, storage of the product When storing, it must be done in compliance with the requirements of DIN EN 806-4 "4.2 Handling of Material": Store lengths of piping on even, clean surfaces The product can be stored outside in its original unopened packaging for up to three months. The packaging must be protected against damage from rain or high levels of humidity 7.3 Installation of the product in the works Installation information Target groups This information is directed at heating and sanitary professionals and trained personnel. Individuals who don't have the appropriate Viega training or qualifications are prohibited from performing assembly, installation and if appli- cable maintenance of this product. This restriction does not extend to possible operating instructions. The installation of Viega products must take place in accordance with the general rules of engineering and the Viega instructions for use. Media The system is suitable for the following media: QQ Drinking water Operating conditions Operating temperature max.: QQ Sanitary installations: 70 C Operating pressure max.: QQ Sanitary installations: 1.0 MPa (10 bar) Kiwa Nederland B.V. - 21-1 January 2017
Mixed installations In drinking water installations, piping components from different metals can have a detrimental effect on each other e. g. cause corrosion. For instance, e. g. threaded adapters made of stainless steel may not be connected directly with pipes or threaded fittings made of galvanised steel. Components made of stainless steel and galvanised steel may not be directly connected, thread/adapter press connectors made of gunmetal are recommended here. All Raxinox pipes may only be mounted using original accessories, Raxinox connectors with SC-Contur and the corre- sponding Raxinox / Raxofix press tools. Use with components of other plastic piping systems is not permitted. All Raxinox pipes may only be used with Raxinox connectors made of stainless steel. Mixing Raxinox components with components from other piping systems is not permitted. Should you have any questions on this subject, please contact the Viega Service Center. Information for use Chemical resistance Note! Material damage due to aggressive chemicals! Aggressive chemicals, especially ones containing solvents, can lead to material damage and leaks. As a result, it may lead to water damage. Avoid contact between system components and aggressive The system components must be protected against excessively high chloride concentrations in the media or operating environment. Excessively high chloride concentrations can lead to corrosion in stainless steel systems. The chloride concentration in the media must not exceed 250 mg/l. The rules below must be followed to prevent external contact with materials containing chloride: QQ Insulating materials must not have a water-soluble chloride ion content that exceeds 0.05%. QQ Sound insulating inlays on the pipe clamps must not contain leachable chloride. QQ Stainless steel components must not come into contact with building materials or mortar containing chloride. If external corrosion protection is required, then the following regulations must be followed: QQ DIN EN 806-2 QQ DIN 1988-200 Storage Materials must be stored in compliance with the requirements of DIN EN 806-4 "4.2 Handling of Material": QQ Store rods on even, clean surfaces. Kiwa Nederland B.V. - 22-1 January 2017
Assembly information Mounting instructions Note! Material damage due to thread locker containing solvents! Thread lockers containing solvents can lead to material damage and leaks in plastic parts of pipe connections. As a result, it may lead to water damage. QQ Only use commercially-available hemp in connection with thread sealing paste or certified sealing tape for drinking water. QQ Using adhesive to glue the edges of the insulating material of the systeminstalled is harmless. QQ Please contact the Viega Service Center if you have any questions. Checking system components System components may, in some cases, become damaged through transportation and storage. QQ Check all parts. QQ Replace damaged components. QQ Do not repair damaged components. QQ Contaminated components may not be installed. Required tools The use of original Viega tools is recommended for installation. The following tools are required for production of a press connection: Hand or electric saws, pipe cutters and angle-grinders are not permitted. QQ press machine with constant pressing force QQ suitable press jaws for raxial press systems QQ pipe shear (model 4441) for dimensions of 16-20 mm Recommended Viega press machines: QQ Pressgun 5 QQ Pressgun Picco QQ Pressgun 4E / 4B QQ Picco QQ Type PT3-AH QQ Type PT3-H / EH QQ Type 2 (PT2) Kiwa Nederland B.V. - 23-1 January 2017
Assembly Bending the pipes After straightening the coiled bundle, Raxinox pipes in 16 and 20 mm dimensions can be bent with the following bending radius values: d Bending radius x d by hand maximum number of bends 16 / 20 6 1 x 90 16 / 20 10 3 x 90 d Bending radius x d with bending tool model 4431 maximum number of bends 16 4 1 x 90 20 4.5 1 x 90 Strain, which occurs during the bending of pipes, can lead to damage to the stainless steel pipe. Avoid critical strain on the stainless steel by observing the abovementioned bending radii Correct and incorrect pipe bends external view Correct and incorrect pipe bends cross section Kiwa Nederland B.V. - 24-1 January 2017
The pipe may be damaged if the bending radius is not observed or the pipe is bent many times. Examples are provided in correct and incorrect pipe bends external view and correct and incorrect pipe bends cross section. If visible or tangible material displacement occurs in the internal radius, the section of pipe affected must be replaced. The subsequent installation of a connector in the region of the bend is not possible in the case of bending radii of 6 x d and lower. Bending directly at the connector leads to kinking of the Shortening the pipes Information on tools, also refer to Required tools. CAUTION! Risk of injury (cutting) due to sharp edges! The cut edge, produced when the pipe is cut, is extremely sharp. These sharp edges can lead to injuries (cuts). QQ Take particular care when dealing with pipes that have been cut. QQ Always round off the cut edges, using the rounder of the pipe shear, immediately after cutting. Dimensions 16 and 20 mm Cut the protective pipe to length with the protective pipe cutter (model 4441). Cut pipe to length properly using a pipe shear. Turn the shear up to 20 on the pipe axis to enable easier cutting. CAUTION To avoid injuries (cuts), immediately round off the pipe end. Replace worn blades (model 4441.6). Ensure that the cut surface is clean and straight. Kiwa Nederland B.V. - 25-1 January 2017
Round off the stainless steel cut edge with the rounder of the pipe shear to avoid damage to the support body. Visual inspection of the rounded cut edge. Consistent bevel around the full cir- cumference with no sharp edges is OK. Visual inspection of the cut edge. Burr, grooves and chips not OK. Replace worn rounder with spare part set model 4441.6. Incorrectly rounded or not rounded off cut edges can lead to damage of the support body. If an improperly rounded off pipe is inserted into a connector, this connector must be discarded! Pressing the connection Push the pipe into the press connector until the pipe end is visible in the inspec- tion window. Kiwa Nederland B.V. - 26-1 January 2017
Check insertion depth in the inspection window. 7.4 Use, maintenance, repair The Viega (general) user instructions for use, maintenance and repair of the Raxinox piping system are applicable. For further information it is advised to contact Viega GmbH & Co. KG. Kiwa Nederland B.V. - 27-1 January 2017