SIST EN 14055:2011
(Main)WC and urinal flushing cisterns
WC and urinal flushing cisterns
This European Standard specifies design, performance requirements and the test methods for WC and urinal flushing cisterns with flushing mechanism, inlet valve and overflow.
This European Standard covers flushing cisterns designed to be connected to drinking water installations inside buildings.
NOTE Cisterns for one-piece WCs and close-coupled suites are covered by EN 997.
Spülkästen für WC-Becken und Urinale
Diese Europäische Norm legt konstruktive und funktionelle Anforderungen sowie Prüfverfahren für Spülkästen für WC Becken und Urinale mit Spülmechanismus, Füllventil und Überlauf fest.
Diese Europäische Norm gilt für Spülkästen, die ständig an die Trinkwasser-Installation in Gebäuden ange¬schlossen sind.
ANMERKUNG Spülkästen für Einstück-WCs und WC-Kombinationen werden durch EN 997 abgedeckt.
Réservoirs de chasse d'eau pour WC et urinoirs
La présente Norme européenne spécifie les exigences relatives a la conception et a la performance ainsi que les méthodes d'essai applicables aux réservoirs de chasse pour WC comportant un mécanisme de chasse, un robinet de remplissage et un trop-plein.
La présente Norme européenne ne couvre que les réservoirs de chasse devant etre raccordés a des installations d'eau potable dans les bâtiments.
NOTE Les cuvettes de WC monoblocs et les réservoirs attenants spécifiques aux cuvettes sont traités par EN 997.
Izplakovalniki WC in pisoarjev
Ta evropski standard določa zasnovo, zahteve za delovanje in preskusne metode za izplakovalnike WC in pisoarjev z izplakovalnim mehanizmom, polnilnim ventilom in izlivom.
Ta evropski standard zajema izplakovalnike, ki se priključijo na napeljave za pitno vodo v stavbah.
OPOMBA: Izplakovalnike za enodelne WC in tesno združene enote zajema EN 997.
General Information
Relations
Standards Content (Sample)
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Izplakovalniki WC in pisoarjevSpülkästen für WC-Becken und UrinaleRéservoirs de chasse d'eau pour WC et urinoirsWC and urinal flushing cisterns91.140.70Sanitarne napraveSanitary installationsICS:Ta slovenski standard je istoveten z:EN 14055:2010SIST EN 14055:2011en,fr,de01-oktober-2011SIST EN 14055:2011SLOVENSKI
STANDARD
SIST EN 14055:2011
EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN 14055
November 2010 ICS 91.140.70 English Version
WC and urinal flushing cisterns
Réservoirs de chasse d'eau pour WC et urinoirs
Spülkästen für WC-Becken und Urinale This European Standard was approved by CEN on 16 October 2010.
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 CEN Management Centre 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 CEN Management Centre has the same status as the official versions.
CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre:
Avenue Marnix 17,
B-1000 Brussels © 2010 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 14055:2010: ESIST EN 14055:2011
EN 14055:2010 (E) 2 Contents Page Foreword .41 Scope .52 Normative references .53 Terms and definitions .54 Classification .85 Requirements and test methods for class 1 products.85.1 Design .85.1.1 Flushing cistern equipment .85.1.2 Water supply connection .95.1.3 Supply piping .95.1.4 Removable parts .95.1.5 Connecting dimensions .95.1.6 Flush pipes . 105.2 Hydraulic and mechanical characteristics . 135.2.1 Flush volume . 135.2.2 Water-saving devices . 145.2.3 Flush rate and impact force . 145.2.4 Overflow . 155.2.5 Inlet valve opening characteristics for water saving flushing . 165.2.6 Safety margin – Dimension “c” . 165.2.7 Backflow prevention, air gap, safety margin – Dimension “a” . 175.2.8 Outlet valve leaktightness . 175.2.9 Outlet valve reliability . 175.2.10 Operating force . 175.2.11 Durability . 175.3 Test methods . 185.3.1 General . 185.3.2 Flush volume . 185.3.3 Flush rate . 195.3.4 Determination of the overflow capacity. 235.3.5 Inlet valve opening characteristics . 245.3.6 Determination of dimension “c” . 245.3.7 Determination of dimension “a” . 245.3.8 Outlet valve leak tightness . 245.3.9 Outlet valve reliability test . 245.3.10 Operating force . 255.3.11 Impact force . 266 Functional requirements and test methods for class 2 products . 306.1 Inlet valve . 306.2 Backflow prevention . 306.3 Marking of flushing cistern . 306.4 Warning pipe and overflow provision. 306.5 Flush volume . 306.5.1 Full flush . 306.5.2 Reduced flush . 306.6 Flush rate . 316.7 Physical endurance and leakage of flushing device . 316.8 Chemical endurance of flushing device . 316.9 Durability . 31SIST EN 14055:2011
EN 14055:2010 (E) 3 6.10 Test methods . 316.10.1 Inlet valve tests . 316.10.2 Warning pipe and overflow provisions . 326.10.3 Flush volume test . 326.10.4 Flush rate test . 336.10.5 Physical endurance and leakage test of flushing device . 346.10.6 Chemical endurance test of flushing device . 356.10.7 Requirements for compatibility testing of class 2 products . 357 Requirements and test methods for class 3 products . 367.1 Requirements and test methods . 367.2 Adjustment . 368 Acoustic characteristics . 369 Dangerous substances . 3610 Marking and product designation . 3611 Evaluation of conformity . 3711.1 General . 3711.2 Type testing . 3711.2.1 Initial type testing . 3711.2.2 Further type testing . 3811.2.3 Sample, testing and compliance criteria . 3811.3 Factory production control. 3911.3.1 General . 3911.3.2 Testing equipment . 3911.3.3 Raw materials and components . 3911.3.4 Product testing and assessment . 3911.3.5 Non-conforming products . 39Annex ZA (informative)
Clauses of this European Standard addressing the provisions of the EU Construction Products Directive . 40ZA.1 Scope and relevant characteristic . 40ZA.2 Procedure for attestation of conformity of WC and urinal flushing cisterns . 41ZA.2.1 System of attestation of conformity . 41ZA.2.2 Declaration of conformity . 42ZA.3 CE marking and labelling. 42Bibliography . 44 SIST EN 14055:2011
EN 14055:2010 (E) 4 Foreword This document (EN 14055:2010) 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 May 2011, and conflicting national standards shall be withdrawn at the latest by August 2012. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN [and/or CENELEC] shall not be held responsible for identifying any or all such patent rights. This document has been prepared under a mandate given to CEN by the European Commission and the European Free Trade Association, and supports essential requirements of EU Directive(s). For relationship with EU Directive(s), see informative Annex ZA, which is an integral part of this document. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom.
SIST EN 14055:2011
EN 14055:2010 (E) 5 1 Scope This European Standard specifies design, performance requirements and the test methods for WC and urinal flushing cisterns with flushing mechanism, inlet valve and overflow. This document covers flushing cisterns designed to be connected to drinking water installations inside buildings. This standard does not cover automatic valveless siphon flushing cisterns for flushing urinals. NOTE Flushing cisterns for one-piece WCs and close-coupled suites are covered by EN 997. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. EN 997:2003, WC pans and WC suites with integral trap EN 1717, Protection against pollution of potable water in water installations and general requirements of devices to prevent pollution by backflow EN 13407:2006, Wall-hung urinals — Functional requirements and test methods EN 14124, Inlet valves for flushing cisterns with internal overflow BS 1212-2:1990, Float operated valves — Specification for diaphragm type float operated valves (copper alloy body) (excluding floats) BS 1212-3:1990, Float operated valves — Specification for diaphragm type float operated valves (plastics bodied) for cold water services only (excluding floats) BS 1212-4:1991, Float operated valves — Specification for compact type float operated valves for WC flushing cisterns (including floats) 3 Terms and definitions For the purposes of this document, the following terms and definitions apply. 3.1 valve-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 3.2 valveless-type flushing cistern cistern with integral syphonic actuated outlet device, for storage and discharge of a defined volume of flushing water for removal of excrement from a WC pan NOTE Both types of flushing cisterns are available, as detailed below: SIST EN 14055:2011
EN 14055:2010 (E) 6 Wall-hung independent low-level
Built-in independent
Wall-hung independent mid-level
Wall-hung independent high-level
One-piece integral (with WC pan)
Close-coupled
3.3 close-coupled multiple use flushing cistern close-coupled flushing cistern for use with different WC pans 3.4 independent flushing cistern flushing cistern mounted separately from a WC pan or urinal 3.5 outlet valve mechanism for opening and closing the outlet orifice of the flushing cistern 3.6 operating mechanism mechanism to open, and if applicable, close the outlet valve 3.7 flush pipe connecting pipe between a flushing cistern’s outlet and a WC’s or urinal's inlet 3.8 overflow device enabling release of excess water from a flushing cistern when water reaches a pre-determined level SIST EN 14055:2011
EN 14055:2010 (E) 7 3.9 inlet valve valve that controls and shuts off the flow of water into a flushing cistern 3.10 overflow level water level corresponding to the upper edge of the overflow or to the lower edge of the overflow notch 3.11 maximum water level highest water level reached after flow stabilisation, in the event of continuous supply, as a result of malfunction of the inlet valve 3.12 critical water level highest water level in any part of the appliance, 2 s after the supply is cut off 3.13 residual water level water level after a full flush is completed 3.14 adjustable residual water level water level in a cistern, after (uninterrupted) flushing, when an outlet mechanism can be adjusted to the elevated residual water level 3.15 meniscus level level resulting from surface tension of water during overflowing 3.16 nominal water level water level when a flushing cistern is filled to the nominal flush volume 3.17 nominal flush volume volume of water indicated, when a flushing cistern is filled to the nominal water level 3.18 flush volume volume of water discharged from the flushing cistern during a flush cycle 3.19 safety margin c distance between the nominal water level determined by the manufacturer and the overflow level 3.20 flush rate volume of water flowing out of a flushing cistern as a function of time 3.21 test height distance between the seat of the outlet valve and the horizontal axis of the flush pipe 3.22 impact force force of the flushing water at the outlet of the flush pipe SIST EN 14055:2011
EN 14055:2010 (E) 8 3.23 flushing device device fitted to a cistern to provide controlled measured volume(s) of water to a WC pan or suite for flushing 3.24
water-saving device flushing device that permits a part of the total flush volume to be delivered, e.g. acting as double-action mechanisms (interruptible) or double-control mechanisms (dual control or dual flush) 3.25 warning level level of spill over of a vertically mounted warning pipe connection or the invert of a horizontally mounted warning pipe connection, or the level at which an equally effective (warning) device would operate 3.26 short-term leak test leak test consisting of a 15 min wait after flushing then positioning paper designed to change colour when wet, under the flushing device for 10 min
NOTE
A leak is defined as being visible discharge of water amounting to more than three separate drops. 3.27 long-term leak test leak test consisting of a 2 h wait after flushing then positioning paper designed to change colour when wet, under the outlet for 15 min
NOTE
A leak is defined as being visible discharge of water amounting to more than three separate drops. 4 Classification Flushing cisterns are classified as described below: Class 1: Flushing cisterns tested in accordance with the requirements of Clauses 5 and 8 using a nominal flush volume of either 4 l, 5 l, 6 l, 7 l or 9 l. Class 2: Flushing cisterns tested in accordance with the requirements of Clauses 6 and 8 using a maximum flushing volume of 6 l, or a dual-flush which combines a maximum flush of 6 l and a reduced flush no greater than two-thirds of the maximum flush. Class 3: Class 1 flushing cistern intended to be used in connection with urinals. 5 Requirements and test methods for class 1 products 5.1 Design 5.1.1 Flushing cistern equipment An equipped flushing cistern comprises: a shell, provided with a removable lid or an access flap allowing access to components; an inlet valve complying with EN 14124; a flushing device; SIST EN 14055:2011
EN 14055:2010 (E) 9 an overflow device; an operating mechanism; a flush pipe, when the cistern is for use with an independent WC pan. In special cases, a combined fitting providing the functions of filling, overflowing and evacuation is permissible. In this case, the fitting shall be designed to comply with the hygiene, physico-chemical, leaktightness, hydraulic, pressure resistance, acoustic and mechanical characteristics specified in EN 14124. The tests shall be performed on the flushing cistern as supplied. 5.1.2 Water supply connection The inlet valve can be connected to the cistern through: the side; the back; the underside; the top. 5.1.3 Supply piping All materials of the supply piping which could be in contact with drinking water shall not be a danger to health. They shall not change the taste, aroma or visual appearance of the drinking water. 5.1.4 Removable parts It shall be possible to dismantle removable parts, without having to remove the flushing cistern. 5.1.5 Connecting dimensions The connecting dimensions shall comply with Table 1. SIST EN 14055:2011
EN 14055:2010 (E) 10 Table 1 — Connecting dimensions (Figures 1 and 2) Designation Symbol Dimensions
mm Remarks Hole for inlet valve — 19 ± 2 c For inlet valves size 3/8" 23 ± 2 c For inlet valves size ½" Hole for outlet valve A 6323+− c For ceramic flushing cisterns 6120+ c For thin-walled flushing cisterns (e.g. plastic) 4523+− c For high level flushing cisterns Inside diameter of outlet connection B 32,510+ c For flush pipes of design A 515,00+ c For flush pipes of design B Outside diameter of outlet connection C a 49,54,00+ b For flush pipes of design C Hole in the cover for operating device — 4021+− c Recommended dimension a Not applicable to flushing cisterns built into wall frames. b Where the exterior diameter of the flush pipe is conical or has several stepped diameters, the maximum diameter is to be verified and recorded. c Other dimensions are permissible if the performance of the cistern is assured.
Key See Table 1 Figure 1 — Outlet connection for flush
pipes of designs A and B Key See Table 1 Figure 2 — Outlet connection for flush
pipes of design C 5.1.6 Flush pipes The dimensions of flush pipes designed to equip WC pans for independent supply shall comply with Table 2. The flush pipe shall be provided by the manufacturer of the flushing cistern. SIST EN 14055:2011
EN 14055:2010 (E) 11 Table 2 — Dimensions of flush pipes (Figures 3 to 6) Designation Symbol Dimension
mm Remarks Outside diameter at inlet b 325,00+ For flush pipes of design A 505,00+ For flush pipes of design B Inside diameter c 5010+ For flush pipes of design C Outside diameter at outlet to WC e 325,00+ For flush pipes of design A 445,00+ For flush pipes of design B 455,00+ For flush pipes of design C Inside diameter at outlet to WC f ≥ 39 For flush pipes of designs B and C Height of flush pipe h ≥ 1 500 For flush pipes of design A ≥ 165 For flush pipes of design B ≥ 600 ≥ 165 For flush pipes of design C Length k ≥ 210 For flush pipes of designs A and B ≥ 180 For flush pipes of design C Length of vertical inlet portion m ≥ 100 For flush pipes of design A Radius of bend r 50 to 80 For flush pipes of design A ≥ 15 For flush pipes of design B ≥ 5 For flush pipes of design C Apart from dimension e other dimensions are permissible, provided the performance requirements in 5.2 are satisfied. SIST EN 14055:2011
EN 14055:2010 (E) 12
Key See Table 2 Figure 3 — Design A flush pipe for wall-hung high-level cisterns, fabricated in one or two parts
Key See Table 2 Figure 4 — Design B flush pipe for wall-hung low-level or mid-level cisterns SIST EN 14055:2011
EN 14055:2010 (E) 13
Key See Table 2 Figure 5 — Design C flush pipe for built-in cisterns
Key
r Radius of bend Figure 6 — Detail X 5.2 Hydraulic and mechanical characteristics 5.2.1 Flush volume Flush volume(s) shall correspond with those specified in Table 3, when measured as described in 5.3.2. SIST EN 14055:2011
EN 14055:2010 (E) 14 Table 3 — Flush volumes Nominal flush volumes
l Flush volumes
l For complete flushing For water-saving (dual) flushing Minimum Maximum Minimum Maximum 9,0 8,5 9,0 3,0 4,5 a 7,0 7,0 7,5 3,0 4,0 a 6,0 6,0 6,5 3,0 4,0 a 5,0 4,5 5,5 3,0 4,0 a 4,0 4,0 4,5 2,0 3,0 a a Only for double-control water-saving (dual) flushing devices. Flushing cisterns or their components shall be marked to allow the correct volume(s) of flush to be achieved. Flushing cisterns with a nominal volume of 9 l, 7 l, 6 l, 5 l or 4 l can be used to deliver the different volumes shown in Table 3. Adjustment can be effected at the inlet valve and/or the outlet mechanism. The manufacturer’s instructions shall describe the procedure and the consequences (e.g. increase in the residual water level or decrease in the filling level). 5.2.2 Water-saving devices Water-saving mechanisms shall be designed so that, when selected, only part of the total flush volume is delivered. Water-saving mechanisms shall comply with the requirements specified below: a) Double-action mechanisms (interruptible): 1) one action initiates flushing; and 2) a second action stops the flush. Devices with immediate and automatic closing are not permitted. b) Double-control mechanisms (dual control): 1) one control releases the full flush volume; and 2) another control releases a reduced flush volume. Both devices shall deliver flush volumes and flush rates in accordance with Tables 3 and 4. 5.2.3 Flush rate and impact force When tested as described in 5.3.3 and 5.3.11, the flush rate and the impact force shall comply with the values specified in Table 4. SIST EN 14055:2011
EN 14055:2010 (E) 15 Table 4 — Flush rates and impact force Type of flushing cistern Test height mm Impact force
N Flush rate for complete flushl/s Independent wall-hung low-level 200 ± 5 — 2,4 ± 0,2 Independent built-in ≥ 195 a — 2,2 ± 0,2 Independent built-in < 195 a > 3,9 (defined by the maximum method) or > 3,7 (defined by the fixed time frame method)2,2 ± 0,2 Independent wall-hung mid-level 565 ± 5 — 1,8 4,01,0+− Independent wall-hung high-level 1 365 ± 5 — 1,8 4,01,0+− One-piece and close-coupled — — n.a. b Multiple use close-coupled — — min. 2,0 c a Flushing cisterns with integral flush pipes and flushing cisterns built into wall frames shall be tested as supplied by the manufacturer, regardless of the test height. b One-piece and close-coupled type will be tested in accordance with EN 997. c Independent from this value, the flushing cistern shall be tested in accordance with EN 997 with dedicated WC pans specified by the manufacturer of multiple use close-coupled flushing cistern. 5.2.4 Overflow When tested as described in 5.3.4, the overflow shall be designed in accordance with the requirements specified below (see Figure 7): a) the distance between the maximum water level and the level of overflow shall be ≤ 20 mm; b) the distance between the critical water level and the level of overflow shall be ≤ 10 mm; c) the distance between the meniscus level and the level of overflow shall be ≤ 5 mm. SIST EN 14055:2011
EN 14055:2010 (E) 16 Dimensions in millimetres
Key 1 Overflow pipe 2 Overflow level 3 Maximum water level 4 Critical water level 5 Meniscus level Figure 7 — Maximum, critical and overflow level 5.2.5 Inlet valve opening characteristics for water saving flushing When tested as described in 5.3.5, inlet valves used with flushing cisterns equipped with a water-saving device shall re-open during or after the short flush has been completed. 5.2.6 Safety margin – Dimension “c” When tested as described in 5.3.6, dimension “c” (see Figure 8) corresponding to the dis
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2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Izplakovalniki WC in pisoarjevSpülkästen für WC-Becken und UrinaleRéservoirs de chasse d'eau pour WC et urinoirsWC and urinal flushing cisterns91.140.70Sanitarne napraveSanitary installationsICS:Ta slovenski standard je istoveten z:FprEN 14055kSIST prEN 14055:2010en,fr,de01-junij-2010kSIST prEN 14055:2010SLOVENSKI
STANDARD
kSIST prEN 14055:2010
EUROPEAN STANDARDNORME EUROPÉENNEEUROPÄISCHE NORMFINAL DRAFTprEN 14055July 2007ICS 91.140.70 English VersionWC and urinal flushing cisternsRéservoirs de chasse pour WC et urinoirsSpülkästen für WC-Becken und UrinaleThis draft European Standard is submitted to CEN members for unique acceptance procedure. It has been drawn up by the TechnicalCommittee CEN/TC 163.If this draft becomes a European Standard, CEN members are bound to comply with the CEN/CENELEC Internal Regulations whichstipulate the conditions for giving this European Standard the status of a national standard without any alteration.This draft European Standard was established by CEN in three official versions (English, French, German). A version in any other languagemade by translation under the responsibility of a CEN member into its own language and notified to the CEN Management Centre has thesame status as the official versions.CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland,France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal,Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.Warning : This document is not a European Standard. It is distributed for review and comments. It is subject to change without notice andshall not be referred to as a European Standard.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMITÉ EUROPÉEN DE NORMALISATIONEUROPÄISCHES KOMITEE FÜR NORMUNGManagement Centre: rue de Stassart, 36
B-1050 Brussels© 2007 CENAll rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. prEN 14055:2007: EkSIST prEN 14055:2010
prEN 14055:2007 (E) 2 Contents Page Foreword.4 1 Scope.5 2 Normative references.5 3 Terms and definitions.5 4 Classification.8 5 Requirements and test methods for class 1 products.8 5.1 Design.8 5.1.1 Flushing cistern equipment.8 5.1.2 Water supply connection.8 5.1.3 Flexible hoses.9 5.1.4 Mechanical components.9 5.1.5 Connecting dimensions.9 5.1.6 Flush pipes.10 5.2 Hydraulic and mechanical characteristics.12 5.2.1 Flush volume.12 5.2.2 Water-saving devices.13 5.2.3 Flush flow rate.13 5.2.4 Overflow.14 5.2.5 Inlet valve opening characteristics.15 5.2.6 Safety margin – dimension "c".15 5.2.7 Backflow prevention.16 5.2.8 Leaktightness.16 5.2.9 Endurance.16 5.2.10 Operating force.16 5.2.11 Durability.16 5.3 Test methods.17 5.3.1 General.17 5.3.2 Flush volume.17 5.3.3 Flush flow rate.18 5.3.4 Overflow.23 5.3.5 Inlet valve opening characteristics.23 5.3.6 Safety margin – dimension "c".23 5.3.7 Backflow prevention.23 5.3.8 Leaktightness.23 5.3.9 Endurance.24 5.3.10 Operating force.25 6 Functional requirements and test methods for class 2 products.25 6.1 Inlet valve.25 6.2 Backflow prevention.26 6.3 Marking of flushing cistern.26 6.4 Warning pipe and overflow provision.26 6.5 Flush volume.26 6.5.1 Full flush.26 6.5.2 Reduced flush.26 6.6 Flush rate.26 6.7 Physical endurance and leakage of flushing device.26 6.8 Chemical endurance of flushing device.26 6.9 Durability.27 6.10 Test methods.27 kSIST prEN 14055:2010
prEN 14055:2007 (E) 3 6.10.1 Inlet valve tests.27 6.10.2 Warning pipe and overflow provisions.27 6.10.3 Flush volume test.28 6.10.4 Flush rate test.28 6.10.5 Physical endurance and leakage test of flushing device.29 6.10.6 Chemical endurance test of flushing device.30 6.10.7 Requirements for compatibility testing of class 2 products.31 7 Requirements and test methods for class 3 products.31 7.1 Requirements and test methods.31 7.2 Adjustment.31 8 Acoustic characteristics.31 9 Dangerous substances.32 10 Marking and product designation.32 11 Evaluation of conformity.33 11.1 General.33 11.2 Type testing.33 11.2.1 Initial type testing.33 11.2.2 Further type testing.33 11.2.3 Sample, testing and compliance criteria.33 11.3 Factory production control.35 11.3.1 General.35 11.3.2 Testing equipment.35 11.3.3 Raw materials and components.35 11.3.4 Product testing and assessment.35 11.3.5 Non-conforming products.35 Annex ZA (informative)
Relationship between this European Standard and the Essential Requirements of EU Directive 89/106/EEC, EU Construction Products Directive.36 ZA.1 Scope and relevant characteristic.36 ZA.2 Procedure for attestation of conformity of WC flushing cisterns.37 ZA.2.1 System of attestation of conformity.37 ZA.2.2 Declaration of conformity.38 ZA.3 CE marking and labelling.38 Bibliography.40
kSIST prEN 14055:2010
prEN 14055:2007 (E) 4 Foreword This document (prEN 14055:2007) has been prepared by Technical Committee CEN/TC 163 “Sanitary appliances”, the secretariat of which is held by UNI. This document is currently submitted to the Unique Acceptance Procedure. This document has been prepared under a mandate given to CEN by the European Commission and the European Free Trade Association, and supports essential requirements of the Construction Products Directive (89/106/EEC). For relationship with EU Directive(s), see informative Annex ZA, which is an integral part of this document. kSIST prEN 14055:2010
prEN 14055:2007 (E) 5 1 Scope This European Standard specifies design, performance requirements and the test methods for WC and urinal flushing cisterns with flushing mechanism, inlet valve and overflow. This European Standard covers flushing cisterns designed to be connected to drinking water installations inside buildings. NOTE Cisterns for one-piece WCs and close-coupled suites are covered by EN 997.
2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. EN 997:2003, WC pans and WC suites with integral trap EN 1717, Protection against pollution of potable water in water installations and general requirements of devices to prevent pollution by backflow EN 13407:2006, Wall-hung urinals — Functional requirements and test methods prEN 13618-1, Hose assembly - Flexible hose assembly - Part 1: Product standard for flexible hose assembly (with or without braiding) prEN 13618-2, Water supply - Hose assembly - Part 2: Semi-rigid hose assembly EN 14124, Inlet valves for flushing cisterns with internal overflow BS 1212-2:1990, Float operated valves — Specification for diaphragm type float operated valves (copper alloy body) (excluding floats) BS 1212-3:1990, Float operated valves — Specification for diaphragm float operated valves (plastics bodied) for cold water services only (excluding floats) BS 1212-4:1991, Float operated valves — Specification for compact type float operated valves for WC flushing cisterns (including floats) 3 Terms and definitions For the purposes of this document, the following terms and definitions apply. 3.1 valve-type flushing cistern cistern with integral valve actuated outlet device, for storage and discharge of a defined volume of flushing water for removal of excrement from a WC pan 3.2 valveless- type flushing cistern cistern with integral syphonic actuated outlet device, for storage and discharge of a defined volume of flushing water for removal of excrement from a WC pan NOTE Both types of flushing cisterns are available, as detailed below: kSIST prEN 14055:2010
prEN 14055:2007 (E) 6
Wall-hung independent low-level
Built-in independent
Wall-hung independent mid-level
Wall-hung independent high-level
One-piece integral (with WC pan)
Close-coupled
3.3 close-coupled multiple use cistern close-coupled cistern for use with different WC pans 3.4 independent cistern cistern mounted separately from a WC pan or urinal 3.5 outlet valve mechanism for opening and closing the outlet orifice of the cistern 3.6 outlet connection piece component to facilitate connection between a cistern and a flush pipe 3.7 operating device device to open, and if applicable, close the outlet valve 3.8 flush pipe connecting pipe between a flushing cistern’s outlet and a WC’s or urinal's inlet kSIST prEN 14055:2010
prEN 14055:2007 (E) 7 3.9 overflow device enabling release of excess water from a cistern when water reaches a pre-determined level 3.10 inlet valve flow control device, through which a flushing cistern is filled after flushing to a pre-set water level 3.11 overflow level water level corresponding to the upper edge of the overflow or to the lower edge of the overflow notch 3.12 maximum water level highest physical or piezometric water level reached after flow stabilisation, in the event of continuous supply, as a result of malfunction of the inlet valve 3.13 critical water level highest physical or piezometric water level in any part of the appliance, 2 s after the supply is cut-off 3.14 residual water level water level after a full flush is completed 3.15 adjustable residual water level water level in a cistern, after (uninterrupted) flushing, when an outlet mechanism can be adjusted to the elevated residual water level 3.16 meniscus level level resulting from surface tension of water during overflowing 3.17 nominal water level water level when a cistern is filled to the nominal flush volume e.g., 4 l, 5 l, 6 l, 7 l or 9 l 3.18 nominal flush volume volume of water indicated, when a cistern is filled to the nominal water level 3.19 flush volume effective volume of water discharged during a flush cycle when the water level corresponds to the nominal water level set by the manufacturer 3.20 safety margin – dimension c distance between the nominal water level determined by the manufacturer, and the overflowing level 3.21 flush flow rate volume of water flowing out of a flushing cistern as a function of time 3.22 flow stabiliser device which is fitted to the horizontal part of the flush pipe and used to stabilise the flow kSIST prEN 14055:2010
prEN 14055:2007 (E) 8 3.23 height for flush flow rate test the distance between the seating of the flushing device and the horizontal axis of the flush pipe 4 Classification Flushing cisterns are classified as described below: Class 1: Flushing cisterns tested in accordance with the requirements of Clauses 5 and 8 - using a nominal flush volume of either 4 l, 5 l, 6 l, 7 l or 9 l. Class 2: Flushing cisterns tested in accordance with the requirements of Clauses 6 and 8 - using a maximum flushing volume of 6 l, or a dual-flush which combines a maximum flush of 6 l and a reduced flush no greater than two-thirds of the maximum flush. Class 3: Class 1 flushing cistern intended to be used in connection with urinals. 5 Requirements and test methods for class 1 products 5.1 Design 5.1.1 Flushing cistern equipment An equipped flushing cistern comprises: a shell, provided with a removable lid or an access flap allowing access to components; an inlet valve for use with flushing cisterns complying with EN 14124. The manufacturer shall declare the operating range. a flushing mechanism; an overflow device; an operating device; a flush pipe, when the cistern is for use with an independent WC pan. In special cases, a combined fitting providing the functions of filling, overflowing and evacuation is permissible. In this case, the fitting shall be designed to comply with the hygiene, physico-chemical, leaktightness, hydraulic, pressure resistance, acoustic and mechanical characteristics specified in EN 14124. The tests shall be performed on the cistern as supplied. 5.1.2 Water supply connection The inlet valve can be connected to the cistern through: the side; the back; kSIST prEN 14055:2010
prEN 14055:2007 (E) 9 the underside; the top. 5.1.3 Flexible hoses The use of elastomeric flexible supply hoses complying with prEN 13618-1 and prEN 13618-2 is permissible inside the flushing cistern and in contact with flushing water. 5.1.4 Mechanical components It shall be possible to dismantle mechanical components, without having to remove the cistern. 5.1.5 Connecting dimensions The connecting dimensions shall comply with Table 1. Table 1 — Connecting dimensions (Figures 1 and 2) Designation Symbol Dimensions
mm Remarks 19 ± 2 c
For inlet valves size 3/8”
Hole for inlet valve
— 23 ± 2 c
For inlet valves size ½”
6323+− c For ceramic cisterns
Hole for outlet valve
A
6120+ c For thin-walled cisterns (e.g. plastic)
4523+− c For high level cisterns
32,510+ c For flush pipes of design A
Inside diameter of outlet connection
B
515,00+ c For flush pipes of design B Outside diameter of outlet connection C a
49,54,00+ b For flush pipes of design C Hole in the cover for operating device —
4021+− c Recommended dimension a Not applicable to cisterns built into wall frames. b Where the exterior diameter of the flush pipe is conical or has several stepped diameters, the maximum diameter is to be verified and recorded. c Other dimensions are permissible, if the performance of the cistern is assured. kSIST prEN 14055:2010
prEN 14055:2007 (E) 10
KEY See Table 1 Figure 1 — Outlet connection for flush pipes of designs A and B KEY See Table 1 Figure 2 — Outlet connection for flush pipes of design C 5.1.6 Flush pipes The dimensions of flush pipes designed to equip WC pans for independent supply shall comply with Table 2. The flush pipe shall be provided by the manufacturer of the flushing cistern. Table 2 — Dimensions of flush pipes (Figures 3 to 6) Designation Symbol Dimension mm Remarks 325,00+ For flush pipes of design A
Outside diameter at inlet
b 505,00+ For flush pipes of design B Inside diameter c 5010+ For flush pipes of design C 325,00+ For flush pipes of design A 445,00+ For flush pipes of design B
Outside diameter at outlet to WC
e 455,00+ For flush pipes of design C Inside diameter at
outlet to WC f ≥ 39 For flush pipes of designs B and C ≥ 1 500 For flush pipes of design A ≥ 165 ≥ 600
For flush pipes of design B
Height of flush pipe
h ≥ 165 For flush pipes of design C ≥ 210 For flush pipes of design A and B
Length
k ≥ 180 For flush pipes of design C Length of vertical inlet portion m ≥ 100 For flush pipes of design A 50 to 80 For flush pipes of design A ≥ 15 For flush pipes of design B
Radius of bend
r ≥ 5 For flush pipes of design C kSIST prEN 14055:2010
prEN 14055:2007 (E) 11 Apart from dimension e other dimensions are permissible, provided the performance requirements in 5.2 are satisfied.
KEY See Table 2 Figure 3 — Design A flush pipe for wall-hung high-level cisterns, fabricated in one or two parts
KEY See Table 2
Figure 4 — Design B flush pipe for wall-hung low-level or mid-level cisterns
kSIST prEN 14055:2010
prEN 14055:2007 (E) 12
KEY See Table 2
Figure 5 — Design C flush pipe for built-in cisterns
KEY r radius of bend Figure 6 — Detail X 5.2 Hydraulic and mechanical characteristics 5.2.1 Flush volume Flush volume(s) shall correspond with those specified in Table 3, when measured as described in 5.3.2.kSIST prEN 14055:2010
prEN 14055:2007 (E) 13
Table 3 — Flush volumes Flush volumes
l For complete flushing For water-saving (dual) flushing Nominal flush volumes
l Minimum Maximum Minimum Maximum 9,0 8,5 9,0 3,0 4,5 a 7,0 7,0 7,5 3,0 4,0 a 6,0 6,0 6,5 3,0 4,0 a 5,0 4,5 5,5 3,0 4,0 a 4,0
4,0 4,5 2,0 3,0 a a Only for double-control water-saving (dual) flushing devices.
The nominal water level(s) shall be marked in multiple use cisterns. Flushing cisterns with a nominal volume of 9 l, 7 l, 6 l, 5 l or 4 l can be used to deliver the different volumes shown in Table 3. Adjustment can be effected at the inlet valve and/or the outlet mechanism. The manufacturer’s instructions shall describe the procedure and the consequences (e.g. increase in the residual water level or decrease in the filling level). 5.2.2 Water-saving devices Water-saving mechanisms shall be designed so that when selected, only part of the total flush volume is delivered. Water-saving mechanisms shall comply with the requirements specified below: Double-action mechanisms (interruptible): one action initiates flushing and a second action stops the flush. Devices with immediate and automatic closing are not permitted. Double-control mechanisms (dual control): one control releases the full flush volume and another control releases a reduced flush volume. Both devices shall deliver flush volumes and flush flow rates
in accordance with Tables 3 and 4. 5.2.3 Flush flow rate When tested as described in 5.3.3, the flush flow rate shall comply with the values specified in Table 4. kSIST prEN 14055:2010
prEN 14055:2007 (E) 14 Table 4 — Flush flow rates Type of flushing cistern Test height
mm Flush rate for complete flushl/s Minimum flush rate for water-saving (dual) flush l/s Independent wall-hung low-level
200 ± 5 a 2,4 ± 0,2 b 2,0 Independent built-in 200 ± 5 a 2,2 ± 0,2 b 2,0 Independent wall-hung mid-level 565 ± 5
1,84,01,0+− b 1,6 Independent wall-hung high-level 1 365 ± 5
1,84,01,0+− 1,7 One-piece and close-coupled — not applicable c not applicable c Multiple use close-coupled — min 2,0d
2,0d a Cisterns with integral flush pipe and cisterns built into wall frames shall be tested as supplied by the manufacturer, regardless of
the test height. b Flush rate with flow stabiliser fitted (see Figure 9). c One-piece and close-coupled type have to be tested in accordance with EN 997. d Independent from this value, the flushing cistern shall be tested in accordance with EN 997 with dedicated WC pans specified by
the manufacturer of multiple use close-coupled cistern.
5.2.4 Overflow When tested as described in 5.3.4, the overflows shall be designed in accordance with the requirements specified below (see Figure 7): a) the distance between the maximum water level and the level of overflow shall be ≤ 20 mm; b) the distance between the critical water level and the level of overflow shall be ≤ 10 mm; c) the distance between the meniscus level and the level of overflow shall be ≤ 5 mm. kSIST prEN 14055:2010
prEN 14055:2007 (E) 15
Dimensions in millimetres
Key 1 overflow pipe 2 overflow level 3 maximum water level 4 critical water level 5 meniscus level Figure 7 — Maximum, critical and meniscus level 5.2.5 Inlet valve opening characteristics When tested as described in 5.3.5, inlet valves used with flushing cisterns equipped with a water-saving device shall re-open during or after the short flush has been completed. 5.2.6 Safety margin – dimension "c" When tested as described in 5.3.6, dimension "c" (see Figure 8) corresponding to the distance between the overflow level and the maximum nominal water level indicated by the manufacturer shall be at least 20 mm.kSIST prEN 14055:2010
prEN 14055:2007 (E) 16
Key a distance between overflow level and lowest point of the inlet valve or inlet orifice c safety margin Figure 8 — Safety margin dimensions 5.2.7 Backflow prevention When tested as described in 5.3.7, the dimension "a" (see Figure 8) between the overflow level and the lowest point of the inlet valve air inlet orifice shall be 20 mm minimum as required by EN 1717 to prevent backflow. In the case of adjustable overflow, the minimum adjustment shall provide a dimension "a" of at least 20 mm. 5.2.8 Leaktightness When tested as described in 5.3.8, the leaktightness shall be ensured. A maximum of three drops does not constitute a failure. 5.2.9 Endurance During endurance testing as described in 5.3.9, the outlet mechanism functions shall be ensured. The flushing device shall not undergo any failure or permanent distortion of any components including linkages that prevents normal operation of the mechanism. 5.2.10 Operating force When tested as described in 5.3.10, it shall be possible for the outlet mechanism to be actuated with a maximum force of 25 N. 5.2.11 Durability Class 1 products conforming with 5.2.1, 5.2.3 to 5.2.9 and Clause 8 are deemed to be durable. kSIST prEN 14055:2010
prEN 14055:2007 (E) 17 5.3 Test methods 5.3.1 General The tests described are type tests (laboratory tests) and not quality control tests carried out during manufacture. 5.3.2 Flush volume 5.3.2.1 General The flush volume
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