EN 14055:2010+A1:2015

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Spülkästen 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 14055:2010+A1:2015SIST EN 14055:2011+A1:2015en,fr,de01-september-2015SIST EN 14055:2011+A1:2015SLOVENSKI
STANDARDSIST EN 14055:20111DGRPHãþD

EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN 14055:2010+A1
June 2015 ICS 91.140.70 Supersedes EN 14055:2010English 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 and includes 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.
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B-1000 Brussels © 2015 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 14055:2010+A1:2015 ESIST EN 14055:2011+A1:2015

!Clauses of this European Standard addressing the provisions of the EU Construction Products Regulation" . 44 Bibliography . 53
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 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 SIST EN 14055:2011+A1:2015

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. !3.28 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 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; — an overflow device; — an operating mechanism; SIST EN 14055:2011+A1:2015

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 510,50+ c For flush pipes of design B Outside diameter of outlet connection C a 49,50,40+ 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 Key See Table 1. See Table 1. Figure 1 — !Outlet connection for flush
pipes of design A, B1 and B2" Figure 2 — Outlet connection for flush
pipes of design C ! NOTE Design B means design B1 and design B2." SIST EN 14055:2011+A1:2015

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 B1 and B2 flush pipes for wall-hung low-level or mid-level cisterns" SIST EN 14055:2011+A1:2015

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+A1:2015

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+A1:2015

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 distance between the overflow level and the maximum nominal water level indicated by the manufacturer shall be at least 20 mm. SIST EN 14055:2011+A1:2015

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 8 — Safety margin dimensions 5.2.7 Backflow prevention, air gap, safety margin – Dimension “a” When tested as described in 5.3.7, the dimension “a” (see Figure 8) between the overflow level and the lowest point of the air inlet orifice of the inlet valve shall be 20 mm minimum as required by EN 1717 to prevent backflow. In the case of adjustable overflow, the adjustment shall provide a dimension “a” of 20 mm minimum. 5.2.8 Outlet valve leaktightness When tested in accordance with 5.3.8, there shall be no leakage greater than three drops within 15 min. 5.2.9 Outlet valve reliability When tested in accordance with 5.3.9, the outlet mechanism functions shall be ensured. The flushing device shall not show any failure or permanent distortion of any components 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. 5.2.10 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. SIST EN 14055:2011+A1:2015

Key 1 flushing cistern 5 residual water level 2 measured volume 6 seat level 3 pressure sensor 7 flush pipe 4 nominal water level 8 test height (see Table 4) Figure 9 — Test arrangement for testing low-level, mid-level and built-in flushing cisterns 5.3.3.2 Determination of the residual water level — Fill the flushing cistern via an inlet valve to the water level indicated by the manufacturer. — Shut off the supply. — Operate the flushing mechanism. — Record the residual water level, when flushing is completed. — Perform the test three times. — If there are differences in the levels obtained, record the highest residual water level. — In the case of flushing cisterns with alternative flush volumes indicated, the residual water level shall be established for each volume. — In the case of flushing cisterns having an adjustment of flushing volumes via the outlet valve, the increased residual water level shall be established and marked for each of the adjustable flushing water volumes. 5.3.3.3 Establishing the measuring points to measure the flush rate 5.3.3.3.1 General In order to measure the flush rate, it is necessary to establish the measuring points indicated in Figures 10, 11 and 12. SIST EN 14055:2011+A1:2015

Key V1 starting volume (full flush 1,0 l) V2 measuring volume (full flush 3,0 l) V3 finishing volume (full flush 2,0 l, 3,0 l, 5,0 l) Figure 10 — Flushing cisterns with an outlet valve adjustment for flushing volumes of 6 l, 7 l or 9 l respectively 5.3.3.3.3 Flushing cisterns with an inlet valve adjustment for flushing volumes of 6 l, 7 l or 9 l respectively The determination of the measuring points and the adjustment of the water level are illustrated in Figure 11. The choice of measuring points is significant for measuring the flush rate. SIST EN 14055:2011+A1:2015

Key V1 starting volume (full flush 1,0 l, 2,0 l, 4,0 l) V2 measuring volume (full flush 3,0 l) V3 finishing volume (full flush 2,0 l) Figure 11 — Flushing cisterns with an inlet valve adjustment for flushing volumes of 6 l, 7 l or 9 l respectively 5.3.3.3.4 Flushing cisterns with a combined outlet/inlet valve adjustment flushing volume of 4,0 l or 5,0 l respectively Flushing cisterns with a combined outlet/inlet valve adjustment flushing volume of 4,0 l or 5,0 l and the determination of the measuring points and the adjustment of the water level are illustrated in Figure 12. The choice of measuring points is significant for measuring the flush rate.
Key V1 starting volume (full flush 1,0 l) V2 measuring volume (full flush ≥ 2,0 l) V3 finishing volume (full flush 1,0 l) V4 residual volume (full flush individual) Figure 12 — Flushing cisterns with a combined outlet/inlet valve adjustment flushing volume of 4,0 l or 5,0 l respectively SIST EN 14055:2011+A1:2015

For a flush with 4 l in a 7 l flushing cistern: Maximum adjustable flushing volume 7,0 l Adjustment via the inlet valve to 5,5 l Giving for full flush: — V1 = 1,0 l; — V2 = 2,0 l; — V3 = 1,0 l; — V4 = 1,5 l. V4 being the volume remaining in the flushing cistern, controlled by the outlet valve. 5.3.3.3.5 Flushing cisterns having no flushing volume adjustment For flushing cistern having no flushing volume adjustment, i.e. where the volume is permanently set to 4 l, 5 l, 6 l, 7 l or 9 l, the measuring points and the setting of the water level shall be established or obtained by analogy with the description in 5.3.3.3.2 to 5.3.3.3.4. 5.3.3.4 Determination of flush rate 5.3.3.4.1 General For flushing cisterns providing the possibility of adjustment to different flushing volumes, the flush rate is to be measured at the adjustment corresponding to the lowest measuring points as 5.3.3.3.2 to 5.3.3.3.4. 5.3.3.4.2 Flush rate for complete flushing — Fill the flushing cistern via an inlet valve to the level determined as described in 5.3.3.3. — Shut off the water supply. — Operate the flushing mechanism. — Using the sensor established in the cistern as described in 5.3.3.1, record the pressure/time curve. — Extrapolate from the recording the flush rate between the measuring points established as described in 5.3.3.3. — The test shall be performed three times. — The arithmetic mean of the three separate operations shall be taken as the flush rate. 5.3.4 Determination of the overflow capacity — Record the overflow level. — Supply the flushing cistern with a flush rate of 0,28 l/s for at least 60 s. In the case of a combined mechanism (inlet valve + flushing mechanism), supply the mechanism at a pressure of 0,6 MPa (6 bar) and force the inlet valve to be open for at least 60 s. — Record the maximum water level when the level has stabilised. SIST EN 14055:2011+A1:2015

Key Key 1 push button or cistern operating mechanism 1 push button or cistern operating mechanism 2 guide 2 guide 3 test force 3 test force
4 release Figure 13 — Test apparatus for
vertical operation Figure 14 — Test apparatus for
horizontal operation 5.3.10.2 Procedure — Fill the flushing cistern to the maximum water level indicated by the manufacturer. — Place the testing device 2 mm from the push button or cistern operating mechanism. — Apply a maximum force of 25 N to the push button or cistern operating mechanism. — Verify that the push button or cistern operating mechanism is activated within 0,5 s to 1 s. 5.3.11 Impact force 5.3.11.1 General The impact force of the flushing cistern complete with the flush pipe according to Table 4 shall be measured with the test device shown in Figure 15. The flushing water from the flush pipe sha
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