Electric appliances connected to the water mains - Avoidance of backsiphonage and failure of hose-sets

The standard specifies requirements for appliances for household and similar purposes to prevent the backflow of non-potable water into the water mains. It also specifies requirements for hose sets used for connecting such appliances to the water mains that supply water at a pressure not exceeding 1 MPa.

Elektrische Geräte zum Anschluss an die Wasserversorgungsanlage - Vermeidung von Rücksaugung und des Versagens von Schlauchsätzen

Appareils électriques raccordés au réseau d'alimentation en eau - Exigences pour éviter le retour d'eau par siphonnage et la défaillance des ensembles de raccordement

Električne naprave, priključene na vodovod - Preprečevanje povratnega vodnega udara in odpovedi cevnega sestava - Dopolnilo AA

General Information

Status
Not Published
Public Enquiry End Date
31-Mar-2021
Current Stage
4020 - Public enquire (PE) (Adopted Project)
Start Date
03-Feb-2021
Due Date
23-Jun-2021
Completion Date
08-Mar-2021

RELATIONS

Buy Standard

Amendment
SIST EN 61770:2009/oprAA:2021
English language
13 pages
sale 10% off
Preview
sale 10% off
Preview

e-Library read for
1 day

Standards Content (sample)

SLOVENSKI STANDARD
SIST EN 61770:2009/oprAA:2021
01-marec-2021
Električne naprave, priključene na vodovod - Preprečevanje povratnega vodnega
udara in odpovedi cevnega sestava - Dopolnilo AA

Electric appliances connected to the water mains - Avoidance of backsiphonage and

failure of hose-sets
Elektrische Geräte zum Anschluss an die Wasserversorgungsanlage - Vermeidung von
Rücksaugung und des Versagens von Schlauchsätzen

Appareils électriques raccordés au réseau d'alimentation en eau - Exigences pour éviter

le retour d'eau par siphonnage et la défaillance des ensembles de raccordement
Ta slovenski standard je istoveten z: EN 61770:2009/prAA:2020
ICS:
91.140.60 Sistemi za oskrbo z vodo Water supply systems
97.030 Električni aparati za dom na Domestic electrical
splošno appliances in general
SIST EN 61770:2009/oprAA:2021 en,fr

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

---------------------- Page: 1 ----------------------
SIST EN 61770:2009/oprAA:2021
---------------------- Page: 2 ----------------------
SIST EN 61770:2009/oprAA:2021
EUROPEAN STANDARD DRAFT
EN 61770:2009
NORME EUROPÉENNE
EUROPÄISCHE NORM
prAA
January 2021
ICS 91.140.60; 97.030
English Version
Electric appliances connected to the water mains - Avoidance of
backsiphonage and failure of hose-sets

Appareils électriques raccordés au réseau d'alimentation en Elektrische Geräte zum Anschluss an die

eau - Exigences pour éviter le retour d'eau par siphonnage Wasserversorgungsanlage - Vermeidung von Rücksaugung

et la défaillance des ensembles de raccordement und des Versagens von Schlauchsätzen

This draft amendment prAA, if approved, will modify the European Standard EN 61770:2009; it is submitted to CENELEC members for

enquiry.
Deadline for CENELEC: 2021-04-09.
It has been drawn up by CLC/TC 61.

If this draft becomes an amendment, CENELEC members are bound to comply with the CEN/CENELEC Internal Regulations which

stipulate the conditions for giving this amendment the status of a national standard without any alteration.

This draft amendment was established by CENELEC in three official versions (English, French, German).

A version in any other language made by translation under the responsibility of a CENELEC member into its own language and notified to

the CEN-CENELEC Management Centre has the same status as the official versions.

CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Croatia, Cyprus, the Czech Republic,

Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the

Netherlands, Norway, Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland,

Turkey and the United Kingdom.

Recipients of this draft are invited to submit, with their comments, notification of any relevant patent rights of which they are aware and to

provide supporting documentation.

Warning : This document is not a European Standard. It is distributed for review and comments. It is subject to change without notice and

shall not be referred to as a European Standard.
European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels

© 2021 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.

Project: 69374 Ref. No. EN 61770:2009/prAA:2020 E
---------------------- Page: 3 ----------------------
SIST EN 61770:2009/oprAA:2021
EN 61770:2009/prAA:2020 (E)
2 European foreword

3 This document (EN 61770:2009/prAA:2020) has been prepared by CLC/TC 61 “Safety of household and similar

4 electrical appliances” in collaboration with CEN/TC 164 “water supply”.
5 This document is currently submitted to the CENELEC Enquiry.
6 The following dates are proposed:

• latest date by which the existence of this document has to be (doa) dor + 6 months

announced at national level

• latest date by which this document has to be implemented at national (dop) dor + 6 months

level by publication of an identical national standard or by endorsement

• latest date by which the national standards conflicting with this (dow) Dor+36 months

document have to be withdrawn

8 Secretary Note: The Notified bodies and laboratories requested the reducing the timing of DOW for aligning the

implementation of AM12 with A11 because the AM12 shall clarify some requirements of A11

10 This amendment supplements or modifies the corresponding clauses of:
11 — EN 61770:2009+A11:2018+A1:2019

12 This document has been prepared under a mandate given to CENELEC by the European Commission and the

13 European Free Trade Association, and supports essential requirements of EU Directive(s).

14 Secretary note: to be consistent with IEC text, the words unrestricted overflow has been changed with

unobstructed overflow.
---------------------- Page: 4 ----------------------
SIST EN 61770:2009/oprAA:2021
EN 61770:2009/prAA:2020 (E)
16 Text of prAA:2020 of EN 61770:2009
17 1 Modification to clause 3 "Terms and definitions"
18 3.4 airgaps
19 3.4.Z1 airgap (general)
20 Add the following note at the end of the clause:

21 NOTE 1 to entry: distance is considered to be unobstructed if the air flow into the feed pipe under vacuum conditions is not

22 restricted by the construction of the appliance.

23 Secretary note: the note has been inserted using the text of the note in the Clause 3.5 of IEC 61770 A1

24 uncorrected deleted by A11 because clarify what does mean the word “unobstructed”.

25 3.Z6 diameter of feed pipe (bore D)
26 Replace the definition of diameter of feed pipe with the following:

27 Internal diameter size of the outlet feed orifice (or calculated from the equivalent cross sectional area)

28 NOTE 1 to entry: The dimension of the diameter “D” is in mm
29 Add Note 2 to entry:

30 NOTE 2 to entry: If a water valve is used for calculations, then the internal diameter of the outlet connection shall be used or

31 the minimum feed orifice diameter.
32 Add new definition:
33 3.Z9 Connection arrangement

34 Entirely water-bearing components, located between the water tap and the backflow-prevention device

35 incorporated in or fixed to the electrical appliance according to 4.2.

36 NOTE 1 to entry: Hose-sets and inlet-valves are typical components of the connection arrangement

37 NOTE 2 to entry: For further information, see Figure Z17 - P (intermediate) = f (P upstream) reverse flow rate constant = QN

38 2 Modification to clause 4 "General requirements"
39 4.Z1
40 Modify “NOTE” with “NOTE Z1”
41 Add the following new notes at the end of the clause:

42 NOTE Z2 If components of the connection arrangement are not suitable for contact with water intended for human

43 consumption but risk analysis does not show specific hazards and if their total volume is equal or smaller then 1l they shall

44 be considered as risk category 2 and be protected against backflow / backsiphonage accordingly.

45 NOTE Z3: The backflow prevention device can be installed in front of the first component of the connection arrangement

46 downstream that is not explicitly suitable for drinking water.
47 3 Modification to clause 6 "Air gaps"
48 Modify the subclauses as follow:
49 6.Z2 Overflow arrangements
50 Add the following text at the end of the clause:
51 The air break to drain shall not restrict the overflow.
---------------------- Page: 5 ----------------------
SIST EN 61770:2009/oprAA:2021
EN 61770:2009/prAA:2020 (E)

52 An overflow is to be regarded as unobstructed if during the investigation of the assembly in each possible

...

Questions, Comments and Discussion

Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.