BS-EN-997-1999.pdf

| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | BRITISH STANDARD BS EN 997:1999 The European Standard EN 997:1999 has the status of a British Standard ICS 91.140.70 NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAW WC pans with integral trap Licensed Copy: sheffieldun sheffieldun, na, Tue Nov 07 07:00:35 GMT+00:00 2006, Uncontrolled Copy, (c) BSI This British Standard, having been prepared under the direction of the Sector Committee for Building and Civil Engineering, was published under the authority of the Standards Committee and comes into effect on 15 November 1999 BSI 11-1999 ISBN 0 580 30808 1 BS EN 997:1999 Amendments issued since publication Amd. No.DateComments National foreword This British Standard is the English language version of EN 997:1999. It supersedes BS 5503-2:1977 which is withdrawn. The UK participation in its preparation was entrusted to Technical Committee B/503, Sanitary appliances, which has the responsibility to: Ð aid enquirers to understand the text; Ð present to the responsible European committee any enquiries on the interpretation, or proposals for change, and keep the UK interests informed; Ð monitor related international and European developments and promulgate them in the UK. A list of organizations represented on this committee can be obtained on request to its secretary. Cross-references The British Standards which implement international or European publications referred to in this document may be found in the BSI Standards Catalogue under the section entitled ªInternational Standards Correspondence Indexº, or by using the ªFindº facility of the BSI Standards Electronic Catalogue. A British Standard does not purport to include all the necessary provisions of a contract. Users of British Standards are responsible for their correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. Summary of pages This document comprises a front cover, an inside front cover, the EN title page, pages 2 to 25 and a back cover. The BSI copyright notice displayed in this document indicates when the document was last issued. Licensed Copy: sheffieldun sheffieldun, na, Tue Nov 07 07:00:35 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EUROPEAN STANDARDEN 997 NORME EUROPÉENNE EUROPÄISCHE NORM July 1999 ICS 91.040.70 English version WC pans with integral trap Cuvettes de WC à siphon integréKlosettbecken mit angeformtem Geruchverschluß This European Standard was approved by CEN on 24 February 1999. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the Central Secretariat or to any CEN member. This European Standard exists in three official versions (English, French, German). A version in any other language made by translation under the responsibility of a CEN member into its own language and notified to the Central Secretariat has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom. CEN European Committee for Standardization Comité Européen de Normalisation Europäisches Komitee für Normung Central Secretariat: rue de Stassart 36, B-1050 Brussels © 1999 Copyright reserved to CEN members. Ref. No. EN 997 : 1999 E Licensed Copy: sheffieldun sheffieldun, na, Tue Nov 07 07:00:35 GMT+00:00 2006, Uncontrolled Copy, (c) BSI Page 2 EN 997:1999 © BSI 11-1999 Contents Page Foreword.3 1Scope .4 2Definitions4 3Functional requirements5 3.1Depth of water seal.5 3.2Flushing requirements 5 3.2.1General .5 3.2.2Wash of bowl.6 3.2.3Flushing of toilet paper6 3.2.4Flushing of single plastic ball6 3.2.5Flushing of fifty small plastic balls.6 3.2.6Over-splashing6 3.2.7After-flush volume.7 3.3Water absorption.7 3.4Static load .7 4Test methods.7 4.1Depth of water seal.7 4.2Flushing tests7 4.2.1Apparatus7 4.2.2Preparation to test.7 4.2.3Sawdust test7 4.2.4Toilet paper test 8 4.2.5Single plastic ball test .8 4.2.6Fifty plastic balls test.8 4.2.7Over-splashing test.8 4.2.8After-flush volume test8 4.3Determination of water absorption9 4.4Load test .10 5Classification.10 5.1Nominal flushing volumes.10 5.2Flushing devices .11 5.3Nominal flushing volumes and flushing devices.11 6Marking 11 6.1Permanent marking.11 6.2Marking by label12 7Quality control.12 Annex A (normative) Valve-type test flushing cistern13 Annex B (normative) Valveless-type test flushing cistern.15 Annex C (normative) Test rig for pressure flush valve.17 Annex D (normative) Test rig for after-flush volume test.19 Annex E (normative) Basket method21 Annex F (normative) Preparation of test specimens.22 Annex G (informative) Quality control.24 Annex H (informative) Classification, flushing volume and regulations of countries on interchangeability of flushing devices25 Licensed Copy: sheffieldun sheffieldun, na, Tue Nov 07 07:00:35 GMT+00:00 2006, Uncontrolled Copy, (c) BSI Page 3 EN 997:1999 © BSI 11-1999 Foreword This European Standard has been prepared by Technical Committee CEN/TC 163 “Sanitary appliances“, the Secretariat of which is held by UNI. This European Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by January 2000, and conflicting national standards shall be withdrawn at the latest by January 2000. This standard is one of a series of standards for sanitary appliances. Supporting standards are those for flushing devices and connecting dimensions. This standard includes annexes, seven normative and one informative, covering the current interchangeability of independent WC pans by flushing volume class and flushing device acceptable in the different Member States of the European Union and European Free Trade Association. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and the United Kingdom. Licensed Copy: sheffieldun sheffieldun, na, Tue Nov 07 07:00:35 GMT+00:00 2006, Uncontrolled Copy, (c) BSI Page 4 EN 997:1999 © BSI 11-1999 1 Scope This standard specifies constructional and performance requirements together with test methods for WC pans with integral trap used for domestic purposes made from vitreous china or stainless steel which are flushed by a nominal volume of 6 l, 7 l or 9 l. This standard is not applicable to WC pans flushed with other volumes, squatting WCs and WC pans without integral trap. 2 Definitions For the purpose of this standard, the following definitions apply: 2.1pedestal WC pan:Floor mounted WC pan that has an integral base. 2.2wall-hung WC pan:WC pan cantilevered clear of the floor. 2.3wash-out WC pan:WC pan in which excrement falls first into a shallow water filled bowl, before being removed by the flushing water. 2.4wash-down WC pan:WC pan in which excrement falls directly into the trap before being removed by the flushing water. 2.5siphonic WC panWC pan in which excrement is removed by siphonage induced by the flushing water. 2.6close-coupled suite:Combination of a WC pan and flushing cistern directly coupled into a functional unit. 2.7one-piece WC pan:WC pan manufactured with an integral flushing cistern. 2.8independent WC pan:WC pan suitable for the connection with a flushing cistern or a pressure flush valve. 2.9valve-type flushing cistern: Cistern with integral valve outlet device for storage and discharge of a defined volume of flushing water for removal of excrement from a WC pan. Licensed Copy: sheffieldun sheffieldun, na, Tue Nov 07 07:00:35 GMT+00:00 2006, Uncontrolled Copy, (c) BSI Page 5 EN 997:1999 © BSI 11-1999 2.10 valveless-type flushing cistern: Cistern with integral siphonic outlet device for storage and discharge of a defined volume of flushing water for removal of excrement from a WC pan. 2.11 pressure flush valve:Valve directly connected to the water supply which delivers a pre-determined volume of flushing water for removal of excrement from a WC pan. NOTE: Drawings are diagrammatic only 3 Functional requirements Table 1 correlates the functional requirements of this standard to the Essential Requirements of the Council Directive of 21 December 1988 on the approximation of laws, regulations and administrative provisions of the Member States relating to construction products (89/106/EEC). Table 1 Functional requirementsEssential Requirements Hygiene Health Environment Safety in useEnergy economy Depth of water sealX Flushing testsX Flushing volumeXX Water absorptionX Static loadX 3.1Depth of water seal When tested in accordance with 4.1 the depth of the water seal shall be not less than 50 mm. 3.2Flushing requirements 3.2.1General Table 2 correlates the flushing requirements to the WC pan type, flushing volume and flushing device type. Licensed Copy: sheffieldun sheffieldun, na, Tue Nov 07 07:00:35 GMT+00:00 2006, Uncontrolled Copy, (c) BSI Page 6 EN 997:1999 © BSI 11-1999 Table 2 WC panNominal flushing volume (litres) Flushing device Wash of bowl (3.2.2) Flushing of toilet paper (3.2.3) Flushing of single ball (3.2.4) Flushing of 50 balls (3.2.5) Over- splashin g (3.2.6) After- flush volume (3.2.7) 9Valve-type flushing cistern XXXX Close-coupled suites and one- piece WC pans Valve-type flushing cistern XXXX 7Valveless-type flushing XXXX 6 Valve-type flushing cistern XXXX Valveless-type flushing cistern XXXXX 9 Valve-type flushing cistern XXXX Pressure flush valve XXXX Valve-type flushing cistern XXXX Independent WC pans 7Valveless-type flushing cistern XXXX Pressure flush valve XXXX Valve-type flushing cistern XXXX 6Valveless-type flushing cistern XXXXX Pressure flush valve XXXX The efficiency of flushing excrement is simulated by the following requirements. 3.2.2Wash of bowl When tested in accordance with 4.2.3, the arithmetic average of any unflushed area below the rim and above the surface of the water in the trap shall not be more than 50 cm 2 after 5 flushing operations. 3.2.3Flushing of toilet paper When tested in accordance with 4.2.4, 12 sheets of toilet paper shall be flushed out of the WC pan a minimum of 4 times out of 5 tests. 3.2.4Flushing of single plastic ball When tested in accordance with 4.2.5, the plastic ball shall be flushed out of the WC pan a minimum of 4 times out of 5 tests. 3.2.5Flushing of fifty small plastic balls When tested in accordance with 4.2.6, after 5 tests, each with 50 balls, a minimum of 85% of the balls shall be flushed out of the WC pan. 3.2.6Over-splashing When tested in accordance with 4.2.7, flushing water shall not splash beyond the rim of the bowl and wet the floor. Only a few small drops are permissible. Licensed Copy: sheffieldun sheffieldun, na, Tue Nov 07 07:00:35 GMT+00:00 2006, Uncontrolled Copy, (c) BSI Page 7 EN 997:1999 © BSI 11-1999 3.2.7After-flush volume When tested in accordance with 4.2.8, an after-flush volume of 2.5 l or 2.8 l as appropriate is required. 3.3Water absorption When tested in accordance with 4.3, the arithmetic average for water absorption of glazed ceramic WC pans shall not exceed 0,5 % by mass. 3.4Static load When tested in accordance with 4.4, wall-hung and non-ceramic pedestal WC pans shall withstand a loading of (400 ± 5) kg without showing any evidence of cracking or permanent deformation. 4Test methods 4.1Depth of water seal Install the WC pan in accordance with 4.2.2. Flush the WC pan and measure the height from the invert of the trappage back plate to the surface of the water. 4.2Flushing tests 4.2.1Apparatus Independent WC pans are to be tested with one or any combination of the following separate flushing devices as indicated by the manufacturer: Valve-type flushing cisternType A (see annex A) Valveless-type flushing cisternType B (see annex B) Pressure flush valveType C (see annex C) For interchangeability of independent WC pans and flushing devices the test requirements shall be fulfilled for any combination (see Tables 3 and 5 and annex H). For close-coupled suites and one-piece WC pans see Table 4 and annex D. 4.2.2Preparation to test Independent WC pans: Install the pedestal or wall-hung WC pan to be tested on a firm flat horizontal or vertical surface as appropriate. Connect a flushing device in accordance with annex A, B or C. Close-coupled suites and one-piece WC pans: Install the suite or the one-piece WC pan on a firm flat horizontal or vertical surface as appropriate using the flushing device provided and specified by the manufacturer. The flushing volume shall be verified for the class of the WC pan (see Table 4 and annex D). 4.2.3Sawdust test 4.2.3.1 Test material 20 g of fine dry wooden sawdust. 4.2.3.2 Test method Moisten the complete inner surface of the WC pan below the flushing rim and above the surface of the water in the trap. Immediately afterwards, sprinkle the sawdust as completely and evenly as possible over the moistened surface. Flush the WC pan and measure any unwashed area. Repeat this procedure 5 times. Licensed Copy: sheffieldun sheffieldun, na, Tue Nov 07 07:00:35 GMT+00:00 2006, Uncontrolled Copy, (c) BSI Page 8 EN 997:1999 © BSI 11-1999 4.2.4Toilet paper test 4.2.4.1 Test material Toilet paper with a saturation time of (15 ± 10) s verified by the basket method (see annex E). Individual sheets shall have a size approximately 140 mm x 100 mm. The mass per unit surface of the toilet paper shall be (30 ± 10) g/m2. 4.2.4.2 Test method Individually loosely crumple 12 sheets of toilet paper and drop them separately one after the other into the WC pan within a time of 14 s to 18 s. Operate the flushing mechanism within 2 s of the last sheet being dropped into the WC pan. Check for any paper not flushed out of the bowl and the trap. Repeat this test 5 times. 4.2.5Single plastic ball test 4.2.5.1 Test material A ball of non-absorbent material, having a relative density of between 1,075 g/cm3 and 1,08 g/cm3 and a diameter of (43 ± 0,5) mm. 4.2.5.2 Test method For each flushing operation place the ball into the WC pan and flush the WC pan. Check if the ball is flushed out of the WC pan. Repeat this test 5 times. 4.2.6Fifty plastic balls test 4.2.6.1 Test material 50 balls of non-absorbent material, each having a mass of (3,7 ± 0,1) g and a diame