WC pans and WC suites with integral trap

This European Standard specifies constructional and performance requirements together with test methods for close-coupled suites, one-piece and independent WC pans with integral trap used for personal hygiene manufactured from glazed ceramics or stainless steel.
This European Standard does not apply to squatting toilets, WC pans without integral trap or flushing cisterns as separate appliances.
In the case of independent WC pans, the associated flushing cisterns and pressure valves are covered by other standards and the reference to cisterns in this standard is related only to the definition and requirements of flushing volume.
In the case of close-coupled suites and one-piece WCs, this standard also specifies design, performance requirements and the test methods for designated flushing cisterns with flushing mechanisms, inlet valves and overflows. For these products, this standard covers flushing cisterns designed to be connected to drinking water installations inside buildings.
Before installation of WCs, EN 12056-2 and national requirements need to be taken into consideration.

WC-Becken und WC-Anlagen mit angeformtem Geruchverschluss

Diese Europäische Norm legt die konstruktiven und funktionellen Anforderungen und Prüfverfahren für WC-Kombinationen, Einstück-WCs und WC-Becken mit freiem Zulauf mit angeformtem Geruchverschluss zur persönlichen Hygiene, hergestellt aus Sanitärkeramik oder nichtrostendem Stahl, fest.
Diese Europäische Norm gilt nicht für Hock-WCs, WC-Becken ohne angeformten Geruchverschluss sowie Spülkästen als Einzelgegenstände.
Für WC-Becken mit freiem Zulauf werden die zugehörigen Spülkästen und Druckspüler durch andere Normen abgedeckt. Der Verweis auf Spülkästen in dieser Norm gilt nur für die Begriffe und die Anforderungen an das Spülvolumen.
Für WC-Kombinationen und Einstück-WCs legt diese Norm zudem Konstruktions- und Leistungs-anforderungen und Prüfverfahren für die zugeordneten Spülkästen mit Spülmechanismus, Füllventil und Überlauf fest. Dabei gilt diese Norm nur für Spülkästen, die für den Anschluss an die Trinkwasser-Installation in Gebäuden ausgelegt sind.
Vor dem Einbau von WCs müssen EN 12056-2 und nationale Bestimmungen berücksichtigt werden.

Cuvettes de WC et cuvettes à réservoir attenant à siphon intégré

La présente norme spécifie les prescriptions relatives à la construction et aux performances, ainsi que les méthodes d’essai des cuvettes de WC indépendantes, monobloc et à réservoir attenant, à siphon intégré, en céramique émaillée ou en acier inoxydable, utilisées pour l’hygiène personnelle.
La présente norme ne s’applique pas aux sièges à la turque, aux cuvettes de WC sans siphon intégré, ni aux réservoirs de chasse seuls.
Pour les cuvettes indépendantes, les réservoirs et robinets de chasse associés sont traités dans d’autres normes. La référence aux réservoirs dans la présente norme ne concerne que la définition et des prescriptions relatives au volume de chasse.
Pour les cuvettes à réservoir attenant et les cuvettes monobloc, la présente norme spécifie également les prescriptions relatives à la conception et aux performances, ainsi que les méthodes d’essai applicables aux réservoirs de chasse associés équipés d’un mécanisme de chasse, d’un robinet d’alimentation et d’un trop-plein. Pour ces produits, la présente norme traite des réservoirs de chasse conçus pour être raccordés aux réseaux d’eau potable à l’intérieur des bâtiments.
Avant l’installation de WC, l’EN 12056-2 et les prescriptions nationales doivent être prises en compte.

Straniščne školjke in straniščna oprema z integriranim sifonom

Ta evropski standard določa konstrukcijske zahteve in zahteve v zvezi z delovanjem ter preskusne metode za prigrajene naprave, enodelne in neodvisne WC školjke z integriranim sifonom za osebno higieno, proizvedene iz glazirane keramike ali nerjavnega jekla.
Ta evropski standard se ne uporablja za čepeča stranišča, WC školjke brez integriranega sifona ali izplakovalne kot ločene naprave.
V primeru neodvisnih WC školjk so povezani izplakovalniki in tlačni ventili zajeti v drugih standardih, pri čemer je sklicevanje na izplakovalnike v tem standardu povezano samo z opredelitvijo in zahtevami prostornine za izplakovalno vodo.
Ta standard za prigrajene naprave in enodelne WC školjke določa tudi zasnovo, zahteve glede zmogljivosti in preskusne metode za določene izplakovalnike z mehanizmi za izplakovanje, dovodnimi ventili ter prelivi. V zvezi s temi izdelki so v tem standardu obravnavani izplakovalniki, ki so namenjeni priključitvi na napeljave za pitno vodo v stavbah.
Pred vgradnjo WC školjk ali naprav je treba upoštevati standard EN 12056-2 in nacionalne zahteve.

General Information

Status
Withdrawn
Publication Date
09-Jul-2015
Withdrawal Date
11-Nov-2018
Current Stage
9900 - Withdrawal (Adopted Project)
Start Date
12-Nov-2018
Due Date
05-Dec-2018
Completion Date
12-Nov-2018

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SLOVENSKI STANDARD
SIST EN 997:2012+A1:2015
01-september-2015
6WUDQLãþQHãNROMNHLQVWUDQLãþQDRSUHPD]LQWHJULUDQLPVLIRQRP
WC pans and WC suites with integral trap
WC-Becken und WC-Anlagen mit angeformtem Geruchverschluss
Cuvettes de WC et cuvettes à réservoir attenant à siphon intégré
Ta slovenski standard je istoveten z: EN 997:2012+A1:2015
ICS:
91.140.70 Sanitarne naprave Sanitary installations
SIST EN 997:2012+A1:2015 en,fr,de

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

---------------------- Page: 1 ----------------------
SIST EN 997:2012+A1:2015
---------------------- Page: 2 ----------------------
SIST EN 997:2012+A1:2015
EUROPEAN STANDARD
EN 997:2012+A1
NORME EUROPÉENNE
EUROPÄISCHE NORM
June 2015
ICS 91.140.70 Supersedes EN 997:2012
English Version
WC pans and WC suites with integral trap

Cuvettes de WC et cuvettes à réservoir attenant à siphon WC-Becken und WC-Anlagen mit angeformtem

intégré Geruchverschluss

This European Standard was approved by CEN on 9 December 2011 and includes Corrigendum 1 issued by CEN on 18 July 2012 and

Amendment 1 approved by CEN on 6 April 2015.

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-CENELEC 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-CENELEC 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, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania,

Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United

Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels

© 2015 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 997:2012+A1:2015 E

worldwide for CEN national Members.
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SIST EN 997:2012+A1:2015
EN 997:2012+A1:2015 (E)
Contents Page

Foreword ..............................................................................................................................................................5

1 Scope ......................................................................................................................................................6

2 Normative references ............................................................................................................................6

3 Terms and definitions ...........................................................................................................................6

4 Classification ....................................................................................................................................... 10

5 Functional requirements and test methods for class 1 products ................................................. 10

5.1 Depth of water seal ............................................................................................................................. 10

5.2 Flushing requirements ....................................................................................................................... 11

5.2.1 General ................................................................................................................................................. 11

5.2.2 Wash of bowl ....................................................................................................................................... 11

5.2.3 Flushing of toilet paper ...................................................................................................................... 11

5.2.4 Flushing of fifty small plastic balls ................................................................................................... 11

5.2.5 Oversplashing ..................................................................................................................................... 11

5.2.6 After-flush volume .............................................................................................................................. 11

5.3 Water absorption ................................................................................................................................ 11

5.4 Static load ............................................................................................................................................ 12

5.5 Additional requirements of flushing cisterns for close-coupled suites and one-piece WCs ..... 12

5.5.1 General ................................................................................................................................................. 12

5.5.2 Inlet valve of the flushing cistern ...................................................................................................... 12

5.5.3 Supply piping ...................................................................................................................................... 12

5.5.4 Flush volume(s) of the flushing cistern ........................................................................................... 12

5.5.5 Leaktightness between flushing cistern and bowl .......................................................................... 12

5.5.6 Outlet valve leaktightness ................................................................................................................. 12

5.5.7 Outlet valve reliability ......................................................................................................................... 12

5.5.8 Overflow ............................................................................................................................................... 12

5.5.9 Safety margin – dimension “c” .......................................................................................................... 13

5.5.10 Safety margin – dimension “a” .......................................................................................................... 14

5.6 Durability ............................................................................................................................................. 14

5.7 Test methods ....................................................................................................................................... 14

5.7.1 Depth of water seal ............................................................................................................................. 14

5.7.2 Flushing tests ...................................................................................................................................... 14

5.7.3 Determination of water absorption ................................................................................................... 17

5.7.4 Load test .............................................................................................................................................. 18

5.7.5 Tests for flushing cisterns of close-coupled suites and one-piece WCs ..................................... 18

5.8 Types of independent WC pans, close-coupled suites and one-piece WCs ................................ 21

5.8.1 Nominal flush volume ........................................................................................................................ 21

5.8.2 Flushing devices ................................................................................................................................. 22

5.8.3 Verification of types ........................................................................................................................... 22

6 Functional requirements and test methods for class 2 products ................................................. 22

6.1 Inlet valve ............................................................................................................................................. 22

6.2 Backflow prevention ........................................................................................................................... 23

6.3 Marking of flushing cistern ................................................................................................................ 23

6.4 Warning pipe and overflow provision............................................................................................... 23

6.5 Flush volume ....................................................................................................................................... 23

6.5.1 Full flush .............................................................................................................................................. 23

6.5.2 Reduced flush ..................................................................................................................................... 23

6.6 Flush rate ............................................................................................................................................. 23

6.7 Physical endurance and leakage of flushing device ....................................................................... 23

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SIST EN 997:2012+A1:2015
EN 997:2012+A1:2015 (E)

6.8 Chemical endurance of flushing device............................................................................................ 23

6.9 Solids discharge and after-flush volume for maximum flush ........................................................ 24

6.10 Paper discharge for reduced-flush volume ...................................................................................... 24

6.11 Liquid contaminant dye retention ...................................................................................................... 24

6.12 Wash of bowl ....................................................................................................................................... 24

6.13 Depth of water seal .............................................................................................................................. 24

6.14 Static load of class 2 products .......................................................................................................... 24

6.15 Water absorption ................................................................................................................................. 24

6.16 Durability of class 2 products ............................................................................................................ 24

6.17 Test methods ....................................................................................................................................... 24

6.17.1 Inlet valve tests .................................................................................................................................... 24

6.17.2 Warning pipe and overflow provisions ............................................................................................. 25

6.17.3 Flush volume and water trap seal tests ............................................................................................ 25

6.17.4 Flush rate test ...................................................................................................................................... 26

6.17.5 Physical endurance and leakage test of flushing device ................................................................ 27

6.17.6 Chemical endurance test of flushing device .................................................................................... 28

6.17.7 Solids discharge and after-flush volume for maximum flush volume test ................................... 28

6.17.8 Paper discharge for reduced-flush volume test ............................................................................... 30

6.17.9 Liquid contaminant dye retention test .............................................................................................. 30

6.17.10 Wash of bowl ....................................................................................................................................... 31

6.17.11 Summary of requirements for compatibility testing of class 2 products ...................................... 31

7 Dangerous substances ....................................................................................................................... 32

8 Marking ................................................................................................................................................. 32

9 Assessment and verification of constancy of performance – AVCP ............................................. 35

9.1 General ................................................................................................................................................. 35

9.2 Type testing ......................................................................................................................................... 35

9.2.1 General ................................................................................................................................................. 35

9.2.2 Test samples, testing and compliance criteria ................................................................................ 36

9.3 Factory production control (FPC) ...................................................................................................... 37

9.3.1 General ................................................................................................................................................. 37

9.3.2 Equipment ............................................................................................................................................ 38

9.3.3 Raw materials and components ........................................................................................................ 38

9.3.4 Product testing and assessment ....................................................................................................... 38

9.3.5 Non-complying products .................................................................................................................... 38

9.3.6 Corrective action ................................................................................................................................. 38

Annex A (normative) Valve-type test flushing cistern .................................................................................. 39

A.1 Valve-type test flushing cistern (Figures A.1 to A.3) ....................................................................... 39

A.2 Calibration of the valve-type test flushing cistern ........................................................................... 41

A.3 Procedure to test the flush rate of the test flushing cistern ........................................................... 41

A.4 Procedure to test the flushing requirements of the WC .................................................................. 42

A.5 Procedure to measure the impact force of the test flushing cistern ............................................. 42

A.5.1 General ................................................................................................................................................. 42

A.5.2 Test device ........................................................................................................................................... 42

A.5.3 Procedure for calibrating the load cell unit and the measurement amplifier ................................ 44

A.5.4 Measurement procedure ..................................................................................................................... 44

A.5.5 Calculation procedure for fixed time frame 0,35 s to 0,5 s ............................................................. 45

A.5.6 Calculation procedure for maximum impact force .......................................................................... 45

Annex B (normative) Test rig for test pressure flush valve ......................................................................... 46

B.1 Test rig (Figure B.1) ............................................................................................................................. 46

B.2 Procedure to measure the impact force............................................................................................ 47

Annex C (normative) Test rig for after-flush volume test ............................................................................. 49

C.1 Test rig for after-flush volume test for independent WC pans (Figures C.1 and C.2) .................. 49

C.2 Test rig for after-flush volume test for one-piece WC pans, close-coupled suites and WC

suites (Figure C.3) ............................................................................................................................... 50

Annex D (normative) Basket method .............................................................................................................. 51

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SIST EN 997:2012+A1:2015
EN 997:2012+A1:2015 (E)

Annex E (normative) Preparation of test specimens .................................................................................... 52

Annex F (informative) Examples of flush pipes and outlet valves for test flushing cisterns................... 54

Annex ZA (informative) !Clauses of this European Standard addressing the provisions of the

EU Construction Products Regulation" ........................................................................................ 58

Bibliography ..................................................................................................................................................... 67

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SIST EN 997:2012+A1:2015
EN 997:2012+A1:2015 (E)
Foreword

This document (EN 997:2012+A1:2015) 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 December 2015, and conflicting national standards shall be withdrawn

at the latest by March 2017.

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 includes Corrigendum 1 issued by CEN on 18 July 2012 and Amendment 1 approved by CEN

on 4 April 2015.
This document supersedes !EN 997:2012".

The start and finish of text introduced or altered by amendment is indicated in the text by tags ! and ".

The modifications of the related CEN Corrigendum have been implemented at the appropriate places in the

text and are indicated by the tags ˜ ™.

!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 EU Construction Products

Regulation.

For relationship with EU Construction Products Regulation, see informative Annex ZA, which is an integral

part of this document."

This standard is one of a series of standards for sanitary appliances. Supporting standards are those for

flushing devices and connecting dimensions.

!The main changes introduced in EN 997:2012 with respect to the prior edition of this standard were the

following:"

a) by reason of the actual market development, testing the flushing requirements has been specified. In this

connection, requirements for test flushing cistern and its calibration have been adjusted to these

conditions (introduction of the new parameter impact force);

b) requirements and test methods for close-coupled suites and one-piece WCs have been extended and

adjusted to those for flushing cisterns in accordance with EN 14055.

NOTE Noise level has not been considered in the present amendment. Noise level will be considered as soon as a

European test method is available.

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, Former Yugoslav Republic of Macedonia, France, Germany, Greece,

Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal,

Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom.

1) Presently, a test method is under elaboration by CEN/TC 126 “Acoustic properties of building products and of

buildings”.
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SIST EN 997:2012+A1:2015
EN 997:2012+A1:2015 (E)
1 Scope

This European Standard specifies constructional and performance requirements together with test methods

for close-coupled suites, one-piece and independent WC pans with integral trap used for personal hygiene

manufactured from glazed ceramics or stainless steel.

This European Standard does not apply to squatting toilets, WC pans without integral trap or flushing cisterns

as separate appliances.

In the case of independent WC pans, the associated flushing cisterns and pressure valves are covered by

other standards and the reference to cisterns in this standard is related only to the definition and requirements

of flushing volume.

In the case of close-coupled suites and one-piece WCs, this standard also specifies design, performance

requirements and the test methods for designated flushing cisterns with flushing mechanisms, inlet valves and

overflows. For these products, this standard covers flushing cisterns designed to be connected to drinking

water installations inside buildings.

Before installation of WCs, EN 12056-2 and national requirements need to be taken into consideration.

2 Normative references

The following documents, in whole or in part, are normatively referenced in this document and are

indispensable for its application. For dated references, only the edition cited applies. For undated references,

the latest edition of the referenced document (including any amendments) applies.

EN 1717, Protection against pollution of potable water in water installations and general requirements of

devices to prevent pollution by backflow

EN 12056-2, Gravity drainage systems inside buildings — Part 2: Sanitary pipework, layout and calculation

EN 13618, Flexible hose assemblies in drinking water installations — Functional requirements and test

methods
EN 14124, Inlet valves for flushing cisterns with internal overflow
AS 1172-1, Water closets of 6/3 l capacity — pans

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.
NOTE Drawings are diagrammatic only.
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SIST EN 997:2012+A1:2015
EN 997:2012+A1:2015 (E)
3.1
glazed ceramic

ceramic material for sanitary appliances with all visible surfaces glazed when installed

3.2
WC pan
bowl-shaped appliance for reception and flushing away of human solid and liquid
excrement
3.3
pedestal WC pan
floor-mounted WC pan that has an integral foot
3.4
wall-hung WC pan
WC pan cantilevered clear of the floor
3.5
back-to-wall WC pan
pedestal WC pan whose back is in contact with the wall
3.6
wash-out WC pan

WC pan in which excrement falls first into a shallow water filled bowl, before being

removed by the flushing water
3.7
wash-down WC pan

WC pan in which excrement falls directly into the trap before being removed by the

flushing water
3.8
˜ ™
siphonic WC pan
WC pan in which excrement is removed by siphonage induced by the flushing water
3.9
close-coupled suite

combination of a WC pan and flushing cistern directly coupled into a functional unit

3.10
one-piece WC pan
WC pan manufactured with an integral flushing cistern
3.11
independent WC pan

WC pan suitable for the connection with a flushing cistern or a pressure flush valve

3.12
WC suite

WC pan combined with either a flushing cistern with integral warning pipe connection

– or a device deemed to be a no less effective device – and inlet/outlet devices, or a

pressure flush valve, with WC and flushing device installed as a functioning unit

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SIST EN 997:2012+A1:2015
EN 997:2012+A1:2015 (E)
3.13
children WC pan
WC pan with a front edge between 300 mm and 380 mm high
3.14
baby WC pan
WC pan with a front edge below 260 mm high
3.15
flushing device

device fitted to a cistern to provide controlled measured volume(s) of water to a WC

pan or suite for flushing
Note 1 to entry: A flushing device can be a siphon, drop valve, flap valve or

pressurised cistern etc. For the purposes of this specification, the flushing device

includes the activator (e.g. handle, button, linkages etc.) and all seals, pistons, or other

integral components.
3.16
valve-type flushing cistern

cistern with integral valve outlet device for the storage and discharge of a defined

volume(s) of flushing water for the removal of excrement from a WC pan
3.17
pressure flush valve

valve directly connected to the water supply which delivers a pre-determined volume

of flushing water for the removal of excrement from a WC pan
3.18
water trap
water seal that prevents backflow of foul odour from a drain
3.19
inlet valve

valve that controls and shuts off the flow of water into a flushing cistern, usually by an

arm connected to a float
3.20
outlet valve
mechanism for opening and closing the outlet orifice of the flushing cistern
3.21
flush pipe
connecting pipe between a flushing cistern’s outlet and a WC’s inlet
3.22
overflow

device enabling release of excess water from a flushing cistern when water reaches a

pre-determined level
3.23
overflow level

water level corresponding to the upper edge of the overflow or to the lower edge of the

overflow notch
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SIST EN 997:2012+A1:2015
EN 997:2012+A1:2015 (E)
3.24
flush volume
volume of water discharged from the flushing device during a flush cycle
3.25
after-flush volume

volume of flush water remaining after the last test specimen has left the outlet of the

bowl
3.26
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
3.27
meniscus level
level resulting from surface tension of water during overflowing
3.28
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

3.29
nominal flush volume

volume of water indicated, when a flushing cistern is filled to the nominal water level

3.30
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
3.31
critical water level

highest water level in any part of the appliance, 2 s after the supply is cut-off

3.32
residual water level
water level, after a full flush is completed
3.33
adjustable residual water level

residual water level in a cistern, after (uninterrupted) flushing, which can be altered by

adjusting the outlet mechanism
3.34
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 1 to entry: A leak is defined as being visible discharge of water amounting to

more than three separate drops.
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SIST EN 997:2012+A1:2015
EN 997:2012+A1:2015 (E)
3.35
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 1 to entry: A leak is defined as being visible discharge of water amounting to

more than three separate drops.
3.36
safety margin – safety margin c
distance between the nominal water level determined by the manufacturer, and the
overflow level
3.37
impact force
force of the flushing water at the outlet of the flush pipe
3.38
test height
distance between the seat of the flushing device and
...

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