EN 997:2012+A1:2015

SLOVENSKI STANDARD
01-september-2015
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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
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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.

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
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
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

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
1)
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”.
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.
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
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
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.
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 the horizontal axis of the flush
pipe
3.39
flush rate
volume of water flowing out of a flushing cistern as a function of time
!
3.40
product type
construction product with a set of representative performance levels or classes in
relation to its essential characteristics, produced using a given combination of raw
materials or other elements in a specific production process
"
4 Classification
WC pans and suites are classified as described below:
Class 1: WC pans and suites designed for use with and tested using a nominal full flush volume of either
4 l, 5 l, 6 l, 7 l or 9 l and in case of a reduced flush not less than those in accordance with Table 2
and Table 3. The requirements of class 1 are given in Clause 5.
Class 2: WC suites designed for use with a pressure flushing valve or a flushing cistern incorporating some
other flushing device, and tested as described in Clause 6, using a maximum flushing volume of
6 l, or a dual-flush combining a maximum flush of 6 l and a reduced flush no greater than two-
thirds of the maximum flush volume. The requirements of class 2 are given in Clause 6.
5 Functional requirements and test methods for class 1 products
5.1 Depth of water seal
When tested in accordance with 5.7.1, the depth of the water seal shall be not less than 50 mm.
5.2 Flushing requirements
5.2.1 General
Table 1 correlates the flushing requirements to the WC pan type and flushing volume.
Table 1 — Flushing requirements
Type of WC pan
Flushing of
Oversplashing
in accordance Wash of bowl Flushing of toilet After-flush
50 plastic balls
with Table 2 and (5.2.2) paper (5.2.3) volume (5.2.6)
(5.2.5)
(5.2.4)
Table 3
9 X X X X
7 X X X X
6 X X  X X
5 X X  X X
4 X X X X
The efficiency of flushing is demonstrated by the following requirements.
5.2.2 Wash of bowl
When tested in accordance with 5.7.2.3, 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 after five flushing operations.
In case of rimless WCs, the surface to be tested is the area between the water surface and a horizontal line
85 mm below the top edge of the bowl.
5.2.3 Flushing of toilet paper
When tested in accordance with 5.7.2.4, 12 sheets of toilet paper shall be flushed out of the WC pan a
minimum of 4 times out of five tests.
For baby WC pans, 6 sheets of toilet paper shall be flushed out of the WC pan a minimum of 4 times out of
five tests.
5.2.4 Flushing of fifty small plastic balls
When tested in accordance with 5.7.2.5 after five tests, each with 50 balls, a minimum of 85 % of the balls
shall be flushed out of the WC pan.
5.2.5 Oversplashing
When tested in accordance with 5.7.2.6, flushing water shall not splash beyond the rim of the bowl and wet
the floor. Only a few small drops are permissible.
5.2.6 After-flush volume
When tested in accordance with 5.7.2.7, an after-flush volume of 2,5 l or 2,8 l as appropriate is required.
5.3 Water absorption
When tested in accordance with 5.7.3, the arithmetic average for water absorption of glazed ceramic WC pans
shall not exceed 0,5 % by mass.
5.4 Static load
When tested in accordance with 5.7.4, wall-hung and non-ceramic WC pans and WC suites shall withstand a
force of (4,00 ± 0,05) kN without showing any evidence of cracking or permanent deformation.
Experience has shown that pedestal ceramic WC pans and WC suites comply with this requirement.
5.5 Additional requirements of flushing cisterns for close-coupled suites and one-piece
WCs
5.5.1 General
If close-coupled suites and one-piece WCs comprising a flushing cistern and a WC pan supplied or specified
by the manufacturer as a unit, the following requirements shall be fulfilled.
5.5.2 Inlet valve of the flushing cistern
Flushing cisterns shall have an inlet valve complying with EN 14124.
5.5.3 Supply piping
All materials of the supply piping which could be in contact with drinking water shall not be danger to health.
They shall not change the taste, aroma or visual appearance of the drinking water.
The use of elastomeric flexible supply hoses complying with EN 13618 is permissible inside the assembly.
5.5.4 Flush volume(s) of the flushing cistern
The flush volume(s) for one-piece and close-coupled flushing cisterns supplied with a WC pan shall conform
to the value(s) specified by the manufacturer according to Table 3, when measured as described in 5.7.5.1.
Flushing cisterns or their components shall be marked to allow the correct volume(s) of flush to be achieved.
5.5.5 Leaktightness between flushing cistern and bowl
When tested in accordance with 5.7.5.2, there shall be no leakage between the WC pan and the flushing
cistern.
5.5.6 Outlet valve leaktightness
When tested in accordance with 5.7.5.3, the outlet shall not show any leakage greater than three drops within
15 min.
5.5.7 Outlet valve reliability
When tested in accordance with 5.7.5.4, the outlet mechanism functions shall be ensured.
The flushing device shall not show any failure or permanent distortion of any component including linkages
that prevents normal operation of the mechanism.
The outlet of the flushing device shall not show leakage greater than three drops within 15 min.
5.5.8 Overflow
When tested as described in 5.7.5.5, the overflow shall meet the requirements specified below (see Figure 1):
a) The distance between the maximum water level and the overflow level shall be ≤ 20 mm.
b) The distance between the critical water level and the overflow level shall be ≤ 10 mm.
c) The distance between the meniscus level and the overflow level shall be ≤ 5 mm.
Dimensions in millimetres
Key
1 overflow pipe
2 overflow level
3 maximum water level
4 critical water level
5 meniscus level
Figure 1 — Maximum, critical and overflow level
5.5.9 Safety margin – dimension “c”
When tested as described in 5.7.5.6, dimension “c” (see Figure 2) corresponding to the distance between the
overflowing level and the maximum nominal water level indicated by the manufacturer shall be ≥ 20 mm.
Key
1 maximum water level
2 overflow level
3 maximum nominal water level
a
distance between overflow level and the point of the air inlet orifice of the inlet valve
c safety margin
Figure 2 — Safety margin dimensions
5.5.10 Safety margin – dimension “a”
When tested as described in 5.7.5.7, the dimension “a” (see Figure 2) between the overflow level and the
lowest point of the air inlet orifice of the inlet valve shall be 20 mm minimum as required in EN 1717, to
prevent backflow.
In the case of an adjustable overflow, the adjustment shall provide a dimension “a” of 20 mm minimum.
5.6 Durability
Class 1 products conforming to the requirements of 5.2 to 5.4 and 5.5.5 to 5.5.10 are deemed to be durable.
5.7 Test methods
5.7.1 Depth of water seal
Install the WC pan in accordance with 5.7.2.2. Flush the WC pan and measure the height from the invert of
the trappage back plate to the surface of the water.
5.7.2 Flushing tests
5.7.2.1 Apparatus
Independent WC pans are to be tested with one or both of the following separate flushing devices:
Valve-type flushing cistern Type A (see Annex A, Tables A.1 and A.2)
Pressure flush valve Type C (see Annex B, Table B.1)
Close-coupled suites and one-piece WC pans shall be tested with flushing cisterns provided or specified by
the manufacturer.
5.7.2.2 Preparation to test
Independent WC pans
Use the flushing volumes in accordance with Table 2 with the full flush as indicated by the manufacturer:
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 or Annex B.
Close-coupled suites and one-piece WC pans
Use the flushing volumes in accordance with Table 3 with the full flush as indicated by the manufacturer:
Install the close-coupled suite or the one-piece WC pan on a firm flat horizontal or vertical surface as
appropriate using the flushing device provided or specified by the manufacturer.
5.7.2.3 Sawdust test
5.7.2.3.1 Test material
20 g of fine dry wood sawdust.
5.7.2.3.2 Procedure
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 evenly as possible over the moistened surface.
Flush the WC pan and measure any unwashed area. Repeat this procedure 5 times.
In the case of rimless WCs, the surface to be tested is the area between the water surface in the trap and a
horizontal line 85 mm below the top edge of the bowl.
5.7.2.4 Toilet paper test
5.7.2.4.1 Test material
+15
−10
!Single layer toilet paper with a saturation time of 15 s verified by the basket method in accordance
with Annex D. Individual sheets shall have a size of (130 ± 10) mm x (100 ± 10) mm. The mass per unit
surface of the toilet paper shall be (30 ± 10) g/m ."
5.7.2.4.2 Procedure
Individually loosely crumple 12 sheets of toilet paper or 6 sheets in case of baby WCs and drop them
separately one after the other into the WC pan within a time of 14 s to 18 s. Activate the full flush within 2 s of
the last sheet being dropped into the WC pan. Record and remove any paper not flushed out of the bowl and
the trap. Repeat this test 5 times.
5.7.2.5 Fifty plastic balls test
5.7.2.5.1 Test material
2)
50 balls of non-absorbent material, each having a mass of (3,7 ± 0,1) g and a diameter of (20 ± 0,1) mm .

2) Suitable balls are available from Fa. Gebauer GmbH, Kugelfabrik, P.O. Box 425, 36004 Fulda, Germany or CIMAP,
Avenue Paul Adam 21 – 25 75017 Paris, France. This information is given for the convenience of users of this standard
and does not constitute an endorsement by CEN of these products.
5.7.2.5.2 Procedure
For each flushing operation place the 50 balls into the WC pan and flush the WC pan with a full flush. Record
and remove any balls left in the WC pan. Repeat this test 5 times.
5.7.2.6 Oversplashing test
5.7.2.6.1 Test material
Paper of a type which shows surface change when wet.
5.7.2.6.2 Procedure
Lay the paper around the WC pan to be tested projecting 200 mm beyond the plan of the bowl projected onto
the floor. Flush the WC pan and record evidence of water on the paper. The test shall be made with the
flushing volume for which the WC pan will be approved.
5.7.2.7 After-flush volume test
5.7.2.7.1 Test rig
A test rig in accordance with Annex C.
NOTE Other test rigs may be used, if the tolerance for after flush volume, related to 6 l, does not exceed
± 0,1 l when the same WC pan is used.
5.7.2.7.2 Test material
Test specimens prepared in accordance with Annex E.
5.7.2.7.3 Procedure
Place four test specimens, or in case of baby WC pans two test specimens, one after the other into the WC
pan and flush the WC pan. In case of wash out WC, place the four specimen as shown in Figure 3.
To obtain 10 measures, repeat the test 9 times.

Figure 3 a) Figure 3 b)
Key
1 water trap
a placement of the four specimen in adults' wash-out WC
b placement of the two specimen in baby wash-out WC
Figure 3 — Placement of specimen in case of wash-out WC
The result of flushing operations when not all test specimens have been evacuated shall count as 0 l.
The test is positive, if:
a) in 8 out of 10 flushes all test specimens are evacuated and the after-flush volume is on each occasion
≥ 2,5 l or
b) the arithmetic average of the after-flush volume of the 10 flushing operations is ≥ 2,8 l.
If the WC pan does not provide results according to a) or b), repeat the procedure again for an additional
20 flushing operations.
The test is then positive, if:
c) in 16 out of 20 flushes all test specimens are evacuated and the after-flush volume is on each occasion
≥ 2,5 l or
d) the arithmetic average of the after-flush volume of the 20 flushing operations is ≥ 2,8 l.
5.7.3 Determination of water absorption
5.7.3.1 Test material and apparatus
— a balance accurate to 0,05 g;
— an oven controlled at a test temperature of (110 ± 5) °C;
— a desiccator with fresh prepared silica gel;
— a chamois leather;
— a heated bath with temperature control;
— demineralised water;
— a pair of fine tweezers;
— a fine brush.
5.7.3.2 Procedure
— Break three samples glazed on one face from a WC pan. The unglazed surface area of the samples shall
be approximately 30 cm and the thickness including the glaze shall be approximately 12 mm.
— Dry the samples at a temperature of 110 °C for (180 ± 5) min.
— Allow the samples to cool in a desiccator.
— Weigh each sample to an accuracy of 0,05 g; the mass is m .
— Using the fine tweezers place the samples in the bath and fill with demineralised water. Ensure they do
not touch the sides or the bottom of the bath.
— Heat the water to boiling point for (120 ± 5) min. Afterwards stop the heating process and leave the
samples immersed for a further (20 ± 1) h.
— Using the fine tweezers take the samples immediately from the water and dry them with slightly damp
chamois leather.
— Any cavities or holes shall be dried using a fine brush.
— Weigh each sample immediately; this mass is m .
— The coefficient of water absorption in percentage shall be calculated for each sample using Equation (1).
mm−
(1)
WA ⋅100
m
where
WA is the coefficient of water absorption, in %;
m is the mass of the dry sample, in g;
m is the mass of the sample after immersion in water, in g.
Calculate the arithmetic average of the water absorption coefficient for the three samples. Report each
individual value and the calculated arithmetic average.
5.7.4 Load test
Wall-hung WC pans shall be fixed in accordance with the
manufacturer's instructions onto a smooth surface with a
layer of mortar or other facing material used for pointing
between the back of the WC pan and the smooth surface.

Pedestal WC pans of non-ceramic materials shall be fixed Figur
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