Specification for installations inside buildings conveying water for human consumption - Part 5: Operation and Maintenance

This European Standard specifies requirements and gives recommendations for the operation and maintenance of drinking water installations within buildings and for pipework outside buildings but within the premises in accordance with EN 806-1.

Technische Regeln für Installationen innerhalb von Gebäuden für Wasser für den menschlichen Gebrauch - Teil 5: Betrieb und Wartung

Diese Europäische Norm legt Anforderungen an den Betrieb und die Wartung von Trinkwasser-Installationen innerhalb von Gebäuden und für Rohrleitungen außerhalb von Gebäuden, aber innerhalb von Grundstücken nach EN 806-1 fest und gibt entsprechende Empfehlungen.

Spécifications techniques relatives aux installations d'eau destinée à la consommation humaine à l'intérieur des bâtiments - Partie 5: Exploitation et maintenance

La présente Norme européenne spécifie les exigences et donne des recommandations concernant l’exploitation et la maintenance des installations d’eau potable à l’intérieur des bâtiments et des canalisations à l’extérieur des bâtiments, dans les limites de propriété, conformément à l’EN 806-1.

Specifikacija za napeljave za pitno vodo v stavbah - 5. del: Delovanje in vzdrževanje

Ta evropski standard določa zahteve in vsebuje priporočila za delovanje in vzdrževanje napeljav za pitno vodo v stavbah ter za cevovode zunaj stavb, a v okviru prostorov, v skladu s standardom EN 806-1.

General Information

Status
Published
Public Enquiry End Date
30-Sep-2009
Publication Date
27-Mar-2012
Current Stage
6060 - National Implementation/Publication (Adopted Project)
Start Date
22-Mar-2012
Due Date
27-May-2012
Completion Date
28-Mar-2012

Buy Standard

Standard
SIST EN 806-5:2012
English language
31 pages
sale 10% off
Preview
sale 10% off
Preview
e-Library read for
1 day

Standards Content (Sample)

SLOVENSKI STANDARD
SIST EN 806-5:2012
01-maj-2012
Specifikacija za napeljave za pitno vodo v stavbah - 5. del: Delovanje in
vzdrževanje

Specification for installations inside buildings conveying water for human consumption -

Part 5: Operation and Maintenance
Technische Regeln für Installationen innerhalb von Gebäuden für Wasser für den
menschlichen Gebrauch - Teil 5: Betrieb und Wartung

Spécifications techniques relatives aux installations d'eau destinée à la consommation

humaine à l'intérieur des bâtiments - Partie 5: Exploitation et maintenance
Ta slovenski standard je istoveten z: EN 806-5:2012
ICS:
13.060.20 Pitna voda Drinking water
91.140.60 Sistemi za oskrbo z vodo Water supply systems
SIST EN 806-5:2012 en,fr,de

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

---------------------- Page: 1 ----------------------
SIST EN 806-5:2012
---------------------- Page: 2 ----------------------
SIST EN 806-5:2012
EUROPEAN STANDARD
EN 806-5
NORME EUROPÉENNE
EUROPÄISCHE NORM
February 2012
ICS 91.140.60
English Version
Specifications for installations inside buildings conveying water
for human consumption - Part 5: Operation and maintenance

Spécifications techniques relatives aux installations d'eau Technische Regeln für Trinkwasser-Installationen - Teil 5:

destinée à la consommation humaine à l'intérieur des Betrieb und Wartung
bâtiments - Partie 5: Exploitation et maintenance
This European Standard was approved by CEN on 19 November 2011.

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, 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
Management Centre: Avenue Marnix 17, B-1000 Brussels

© 2012 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 806-5:2012: E

worldwide for CEN national Members.
---------------------- Page: 3 ----------------------
SIST EN 806-5:2012
EN 806-5:2012 (E)
Contents Page

Foreword ..............................................................................................................................................................4

1 Scope ......................................................................................................................................................5

2 Normative references ............................................................................................................................5

3 Terms and definitions ...........................................................................................................................7

4 General ....................................................................................................................................................7

5 Documentation .......................................................................................................................................7

6 Operation ................................................................................................................................................8

7 Interruptions to operation and disconnection ....................................................................................8

8 Resumption of supply ...........................................................................................................................9

9 Damage and faults .................................................................................................................................9

9.1 Change in water quality ........................................................................................................................9

9.2 Insufficient water supply .......................................................................................................................9

9.3 Noise emission .................................................................................................................................... 10

10 Alterations, extensions and refurbishment ..................................................................................... 10

11 Accessibility of installation components ......................................................................................... 10

12 Maintenance ........................................................................................................................................ 10

Annex A (normative) Frequencies for inspection and maintenance of components for potable

water installations............................................................................................................................... 12

Annex B (normative) Inspection and maintenance procedures .................................................................. 14

B.1 Air gaps (protection device family A) ............................................................................................... 14

B.2 Pipe interrupters (protection unit family D type C) ......................................................................... 14

B.3 Backflow preventer with controllable reduced pressure zone (protection unit BA) ................... 15

B.4 Backflow preventer with different non-controllable pressure zones (protection unit CA) ......... 17

B.5 Controllable antipollution check valves (protection units EA and EC) ......................................... 18

B.6 Non-controllable antipollution check valves (protection units EB and ED) ................................. 19

B.7 Inline anti vacuum valve (protection units DA) ............................................................................... 19

B.8 Pipe interrupter with atmospheric vent and moving elements (protection unit DB) ................... 20

B.9 Hose union backflow preventer (protection unit HA) ..................................................................... 21

B.10 Hose union anti-vacuum valve (protection unit type HB) .............................................................. 22

B.11 Automatic diverter (protection unit type HC) ................................................................................... 22

B.12 Hose union anti vacuum valve combined with check valve (protection unit family H type

D) .......................................................................................................................................................... 23

B.13 Pressurised air inlet valve (protection unit family L type A) .......................................................... 24

B.14 Pressurised air inlet valve combined with a check valve located downstream (protection

unit family L type B)............................................................................................................................ 24

B.15 Hydraulic safety groups and expansion groups ............................................................................. 25

B.16 Pressure safety valves, expansion valves and combined temperature and pressure relief

valves ................................................................................................................................................... 26

B.17 Inline hot water supply tempering valves ........................................................................................ 27

B.18 Pressure reducing valve .................................................................................................................... 27

B.19 Pressure booster pump ..................................................................................................................... 28

B.20 Water heaters ...................................................................................................................................... 28

B.21 Fire fighting installations ................................................................................................................... 28

B.22 Pipework .............................................................................................................................................. 28

B.23 Water meters ....................................................................................................................................... 28

---------------------- Page: 4 ----------------------
SIST EN 806-5:2012
EN 806-5:2012 (E)

Annex C (normative) Inspection and maintenance procedures for water conditioning devices ............. 30

Bibliography ...................................................................................................................................................... 31

---------------------- Page: 5 ----------------------
SIST EN 806-5:2012
EN 806-5:2012 (E)
Foreword

This document (EN 806-5:2012) has been prepared by Technical Committee CEN/TC "Water supply", the

secretariat of which is held by AFNOR.

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 August 2012, 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 is intended for the use of engineers, architects, surveyors, contractors, installers, water

suppliers, consumers and regulatory inspectors.

This standard has been written in the form of a practice specification. It is the fifth part of the European

Standard "Specifications for installations inside buildings concerning water for human consumption" consisting

of five parts as follows:
 Part 1: General;
 Part 2: Design;
 Part 3: Pipe sizing — Simplified method;
 Part 4: Installation;
 Part 5: Operation and maintenance.

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, Turkey and the United Kingdom.
---------------------- Page: 6 ----------------------
SIST EN 806-5:2012
EN 806-5:2012 (E)
1 Scope

This European Standard specifies requirements and gives recommendations for the operation and

maintenance of potable water installations within buildings and for pipework outside buildings but within the

premises in accordance with EN 806-1.
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 806-1:2000, Specifications for installations inside buildings conveying water for human consumption —

Part 1: General

EN 806-2, Specifications for installations inside buildings conveying water for human consumption —

Part 2: Design

EN 806-4:2010, Specifications for installations inside buildings conveying water for human consumption —

Part 4: Installation
EN 1487, Building valves — Hydraulic safety groups — Tests and requirements
EN 1488, Building valves — Expansion groups — Tests and requirements
EN 1489, Building valves — Pressure safety valves — Tests and requirements

EN 1490, Building valves — Combined temperature and pressure relief valves — Tests and requirements

EN 1491, Building valves — Expansion valves — Tests and requirements

EN 1567, Building valves — Water pressure reducing valves and combination water pressure reducing

valves — Requirements and tests

EN 1717:2000, Protection against pollution of potable water in water installations and general requirements of

devices to prevent pollution by backflow

EN 12729, Devices to prevent pollution by backflow of potable water — Controllable backflow preventer with

reduced pressure zone — Family B - Type A

EN 12897, Water supply — Specification for indirectly heated unvented (closed) storage water heaters

EN 13076, Devices to prevent pollution by backflow of potable water — Unrestricted air gap — Family A -

Type A

EN 13077, Devices to prevent pollution by backflow of potable water — Air gap with non-circular overflow

(unrestricted) — Family A - Type B

EN 13078, Devices to prevent pollution by backflow of potable water — Air gap with submerged feed

incorporating air inlet plus overflow — Family A, type C

EN 13079, Devices to prevent pollution by backflow of potable water — Air gap with injector — Family A -

Type D

EN 13433, Devices to prevent pollution by backflow of potable water — Mechanical disconnector, direct

actuated — Family G, type A
---------------------- Page: 7 ----------------------
SIST EN 806-5:2012
EN 806-5:2012 (E)

EN 13434, Devices to prevent pollution by backflow of potable water — Mechanical disconnector, hydraulic

actuated — Family G, type B

EN 13443-1, Water conditioning equipment inside buildings — Mechanical filters — Part 1: Particle rating

80 µm to 150 µm — Requirements for performances, safety and testing

EN 13443-2, Water conditioning equipment inside buildings — Mechanical filters — Part 2: Particle rating

1 µm to less than 80 µm — Requirements for performance, safety and testing

EN 13959, Anti-pollution check valves — DN 6 to DN 250 inclusive family E, type A, B, C and D

EN 14095, Water conditioning equipment inside buildings — Electrolytic treatment systems with aluminium

anodes — Requirements for performance, safety and testing

EN 14367, Non-controllable backflow preventer with different pressure zones — Family C, type A

EN 14451, Devices to prevent pollution by backflow of potable water — In-line anti-vacuum valves DN 8 to

DN 80 — Family D, type A

EN 14452, Devices to prevent pollution by backflow of potable water — Pipe interrupter with atmospheric vent

and moving element DN 10 to DN 20 — Family D, type B

EN 14453, Devices to prevent pollution by backflow of potable water — Pipe interrupter with permanent

atmospheric vent DN 10 to DN 20 — Family D, type C

EN 14454, Devices to prevent pollution by backflow of potable water — Hose union backflow preventer DN 15

to DN 32 — Family H, type A

EN 14455, Devices to prevent pollution by backflow of potable water — Pressurised air inlet valves DN 15 to

DN 50 — Family L, type A and type B

EN 14506, Devices to prevent pollution by backflow of potable water — Automatic diverter — Family H, type C

EN 14622, Devices to prevent pollution by backflow of potable water — Air gap with circular overflow

(restricted) — Family A, type F

EN 14623, Devices to prevent pollution by backflow of potable water — Air gaps with minimum circular

overflow (verified by test or measurement) — Family A, type G

EN 14652, Water conditioning equipment inside buildings — Membrane separation devices — Requirements

for performance, safety and testing

EN 14743, Water conditioning equipment inside buildings — Softeners — Requirements for performance,

safety and testing

EN 14812, Water conditioning equipment inside buildings — Chemical dosing systems — Pre-set dosing

systems — Requirements for performance, safety and testing

EN 14897, Water conditioning equipment inside buildings — Devices using mercury low-pressure ultraviolet

radiators — Requirements for performances, safety and testing

EN 14898, Water conditioning equipment inside buildings — Active media filters — Requirements for

performances, safety and testing

EN 15092, Building valves — Inline hot water supply tempering valves — Tests and requirements

EN 15096, Devices to prevent pollution by backflow of potable water — Hose union anti-vacuum valves —

DN 15 to DN 25 inclusive Family H, type B and type D — General technical specification

---------------------- Page: 8 ----------------------
SIST EN 806-5:2012
EN 806-5:2012 (E)

EN 15161, Water conditioning equipment inside buildings — Installation, operation, maintenance and repair

EN 15219, Water conditioning equipment inside buildings — Nitrate removal devices — Requirements for

performance, safety and testing

EN 15848, Water conditioning equipment inside buildings — Adjustable chemical dosing systems —

Requirements for performance, safety and testing

EN ISO 3822-1, Acoustics — Laboratory tests on noise emission from appliances and equipment used in

water supply installations — Part 1: Method of measurement (ISO 3822-1:1999)

EN ISO 3822-2, Acoustics — Laboratory tests on noise emission from appliances and equipment used in

water supply installations — Part 2: Mounting and operating conditions for draw-off taps and mixing valves

(ISO 3822-2:1995)

EN ISO 3822-3, Acoustics — Laboratory tests on noise emission from appliances and equipment used in

water supply installations — Part 3: Mounting and operating conditions for in-line valves and appliances

(ISO 3822-3:1997)

EN ISO 3822-4, Acoustics — Laboratory tests on noise emission from appliances and equipment used in

water supply installations — Part 4: Mounting and operating conditions for special appliances

(ISO 3822-4:1997)
3 Terms and definitions

For the purposes of this document, the terms, definitions and graphical symbols given in EN 806-1:2000 and

EN 1717:2000 apply.
4 General

Installations shall be operated and maintained in such a manner as to avoid adversely affecting the quality of

potable water, the supply to consumers and the equipment of the water supplier.

Installations shall be checked at regular intervals for safety and performance. Appropriate procedures shall be

adopted to maintain the performance of the system at the level specified in EN 806-2, EN 1717 and the

individual product standards referenced in Annex A.

The system shall be operated in accordance with the original design conditions, e.g. temperature, pressure.

Responsibility for operation, inspection and maintenance is subject to local and national requirements (e.g.

qualified personnel).
5 Documentation

In order to enable the correct operation and maintenance, all information relevant to the installation shall be

readily available.

Manufacturer's documentation (e.g. Technical Product Information (TPI)) related to the operation and

maintenance of appliances shall be available, retained and followed.
The commissioning report shall be part of the documentation.

The maintenance shall be recorded and stored in such a way that the data is auditable.

---------------------- Page: 9 ----------------------
SIST EN 806-5:2012
EN 806-5:2012 (E)
6 Operation

Installations and appliances shall be operated in such a manner as to ensure their reliable performance.

Unless otherwise specified in the relevant operating instructions, the following shall apply:

 Stop valves and servicing valves shall always be in their fully open or closed position and actuated at

regular intervals to ensure they remain operational.

 All spare parts shall be readily available and fit for purpose. Original manufacturers' spare parts are

preferred.

 Valves and parts, which are subject to noise control requirements, shall only be replaced by valves and

parts that are at least acoustically equivalent.

 Draw-off fittings shall not to be used to connect hoses, unless suitable backflow protection is provided

(see EN 1717).

 The connection of appliances can influence water quality. It is recommended that any connection and

modifications are undertaken by suitably qualified personnel.

 The connection of appliances and apparatus (e.g. washing machines and dishwashers) shall be suitably

protected against backflow in accordance with EN 1717.

 Hoses (e.g. garden hoses) shall only be connected to draw-off points provided for this purpose which are

specifically designed for hose connection and are fitted with suitable backflow protection.

 The air inlet openings of valves (e.g. anti vacuum valves, air gaps) shall not be closed or obstructed and

shall be protected against possible flooding or contamination.

 The water contained in parts of the installation that are seldom used (e.g. pipes serving guest rooms,

garages or cellar connections) shall be flushed at regular intervals, preferably once a week.

 Water pipes shall not bear external loads.

 Checks shall be made on the temperature of water in pipes, cold water cisterns, hot water storage

vessels and the discharge from taps to ensure that they are within the limits as listed in EN 806-2.

 Particular attention shall be given to the function and servicing of safety and protection devices and to the

location of stop valves. Local and national regulations shall apply.

 Hygienic aspects shall be observed especially where water conditioning equipment is installed.

7 Interruptions to operation and disconnection

Installations, which will not be operated within 7 days of their completion or are out of service for more than

7 days, shall either be shut off at the supply stop valve and drained or the water shall be flushed regularly.

Service pipes that are not commissioned immediately after completion or are to be disconnected temporarily,

shall be shut off at the water main and those not used for a period of one year or more, should be

disconnected from the water main.

Water installations located in areas where frost damage is likely and frost protection measures are not in place

and operational, shall be drained in time to prevent such damage.
---------------------- Page: 10 ----------------------
SIST EN 806-5:2012
EN 806-5:2012 (E)

To avoid potential damage by water and water loss in the event of prolonged absence, it is recommended that

the system is isolated at the supply stop valve in residential units and in the case of apartments, at the stop

valve in the pipe entering the apartment.
8 Resumption of supply

After interruptions to the operation, it is usually sufficient for the individual draw-off fittings to be fully opened

for a short period (approximately 5 min) to allow stagnant water to run off.

Systems which have been temporarily shut off and drained shall be thoroughly flushed before operation is

resumed by the following procedure:

 The stop valves shall be partially opened, starting with the service stop valve. To prevent pressure surges

and damage to the system, the pipes shall then be completely vented by slowly opening the taps.

Following this, the stop valves shall be fully opened and the pipes shall be flushed (for flushing see

EN 806-4:2010, 6.2).

 Once the system has been filled, flushed or cleaned and, if necessary, disinfected and the draw-off

fittings are closed, all accessible pipes, connections and appliances shall be inspected for signs of

leakage.

 Any water conditioning equipment with a regeneration process shall be restarted manually and other

water conditioning equipment in accordance with the manufacturer's instructions.

Systems that have been out of service for a prolonged period, not commissioned or disconnected from the

service pipe shall only be reconnected and/or operation restarted by the water supplier or a suitably qualified

installer.
Any necessary disinfection shall be in accordance with EN 806-4:2010, 6.3.1.
9 Damage and faults
9.1 Change in water quality

Where damage or malfunctions involve the risk of water pollution or produce changes in odour, taste or colour

of the water, necessary corrective actions shall be taken.

In cases, where immediate action is necessary to prevent serious damage or contamination, the system shall

be shut off at the service stop valve; the water supplier shall be informed.

In case of stagnation and when the water temperature does not comply with EN 806-2, there is an increased

risk of bacteria growth, e.g. Legionella. Then necessary corrective actions shall be taken.

9.2 Insufficient water supply

In the case of insufficient supply of water, at least the following shall be checked:

 stop valves not fully opened;
 blocked filters;
 blocked spray outlets (e.g. by dirt or scale);
 defective pressure reducing valves;
---------------------- Page: 11 ----------------------
SIST EN 806-5:2012
EN 806-5:2012 (E)

 too much water being drawn off at the same time from a number of discharge points;

 scaling of system components, in particular of those carrying hot water;
 change in supply pressure;
 pipe burst or frozen pipes.
9.3 Noise emission

In the case of noise emission, higher than expected, at least the following shall be checked:

 installation of valves not classified in accordance with EN ISO 3822 series;
 stop valves that are defective or not fully opened;

 water hammer, caused by rapid-closing or defective draw-off fittings, unsuitable valves, incorrect

operation or installation or inadequate fixing;
 too high velocities due to high pressure or incorrect pipe sizing.
10 Alterations, extensions and refurbishment

Major alterations to and extensions of the installation, in particular extensions of the pipework servicing

appliances, connection of systems and appliances, can be a potential source of potable water pollution.

Therefore, prior to this work being undertaken notification shall be given to the relevant authority in

accordance with local and national regulations. This work together with maintenance and replacement of

safety devices and backflow prevention devices shall be carried out by the water supplier or a suitably

qualified installer and shall be documented (see Clause 5).

Where pipework, fittings or appliances are to be replaced, continuity of earthing and equipotential bonding

shall be maintained. Where pipework has been used for earthing, alternative earthing arrangements shall be

made in consultation with the electricity supplier and in accordance with national or local regulations.

Colour or marking to aid tracing of the pipe system shall be maintained and protected.

11 Accessibility of installation components

Installation components which require regular inspection and servicing (e.g. water meters, check valves,

filters, anti-vacuum valves, air gaps) or are installed for inspection and servicing purposes (e.g. pressure

gauges), and all controls (e.g. on stop valves) shall be readily accessible for inspection, maintenance and

operation. Access to these components shall not be obstructed by stored goods, furniture, cladding, floor

coverings, etc.
12 Maintenance

Routine maintenance work on pipes and draw-off fittings, stop valves and appliances shall be in accordance

with the manufacturer's instructions. Particular care shall be taken to ensure reliable operation of safety and

backflow prevention devices. Where water conditioning equipment is installed, specific attention shall be paid

to the hygienic aspects to prevent excessive bacterial growth.
Types of maintenance include:
 Inspection: The system shall be visually checked on a regular basis.
---------------------- Page: 12 ----------------------
SIST EN 806-5:2012
EN 806-5:2012 (E)

 Routine maintenance: work on pipes and draw-off fittings, stop valves and appliances shall be carried out

in accordance with the manufacturer's instructions. To ensure reliable operation, safety devices and

backflow protection devices shall be checked at regular intervals and maintained in fully operational

condition by replacing, where necessary, any worn part (e.g. seals, valve seats, springs, diaphragms),

taking into account the requirements and recommendations given in Annex A, Annex B and Annex C.

Annex A, Annex B and Annex C describe the inspection, maintenance and repair work to be carried out for the

common types of valves, appliances and installation components and give recommendations for the minimum

frequency of such work. Procedures and frequencies for operation and routine maintenance shall be followed

in accordance with the manufacturer's instructions.

Frequencies for inspection and routine maintenance are given in Annex A. Any deviation shall be justified and

recorded; these may depend on:
 size and complexity of the network;
 type of water use (cooking, beverage, shower, medical care, etc.);
 users (vulnerability);
 operation of the installation (permanent, intermittent, seasonal, etc.).

Cisterns shall be inspected at regular intervals to ensure they are clean, that overflow and warning pipes are

clear, that covers are adequate and securely fixed and that there are no signs of leakage or deterioration likely

to result in leakage. Cisterns storing potable water shall be inspected at least annually, and the water shall be

tested, if c
...

Questions, Comments and Discussion

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