SIST EN 806-5:2012
(Main)Specification for installations inside buildings conveying water for human consumption - Part 5: Operation and Maintenance
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
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 MaintenanceTechnische 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 maintenanceTa 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.
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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 Wartungbâtiments - 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 STANDARDIZATIONCOMITÉ 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 ----------------------
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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
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Annex C (normative) Inspection and maintenance procedures for water conditioning devices ............. 30
Bibliography ...................................................................................................................................................... 31
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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,
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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: GeneralEN 806-2, Specifications for installations inside buildings conveying water for human consumption —
Part 2: DesignEN 806-4:2010, Specifications for installations inside buildings conveying water for human consumption —
Part 4: InstallationEN 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 requirementsEN 1567, Building valves — Water pressure reducing valves and combination water pressure reducing
valves — Requirements and testsEN 1717:2000, Protection against pollution of potable water in water installations and general requirements of
devices to prevent pollution by backflowEN 12729, Devices to prevent pollution by backflow of potable water — Controllable backflow preventer with
reduced pressure zone — Family B - Type AEN 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 AEN 13077, Devices to prevent pollution by backflow of potable water — Air gap with non-circular overflow
(unrestricted) — Family A - Type BEN 13078, Devices to prevent pollution by backflow of potable water — Air gap with submerged feed
incorporating air inlet plus overflow — Family A, type CEN 13079, Devices to prevent pollution by backflow of potable water — Air gap with injector — Family A -
Type DEN 13433, Devices to prevent pollution by backflow of potable water — Mechanical disconnector, direct
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EN 13434, Devices to prevent pollution by backflow of potable water — Mechanical disconnector, hydraulic
actuated — Family G, type BEN 13443-1, Water conditioning equipment inside buildings — Mechanical filters — Part 1: Particle rating
80 µm to 150 µm — Requirements for performances, safety and testingEN 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 testingEN 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 testingEN 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 AEN 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 BEN 14453, Devices to prevent pollution by backflow of potable water — Pipe interrupter with permanent
atmospheric vent DN 10 to DN 20 — Family D, type CEN 14454, Devices to prevent pollution by backflow of potable water — Hose union backflow preventer DN 15
to DN 32 — Family H, type AEN 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 BEN 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 FEN 14623, Devices to prevent pollution by backflow of potable water — Air gaps with minimum circular
overflow (verified by test or measurement) — Family A, type GEN 14652, Water conditioning equipment inside buildings — Membrane separation devices — Requirements
for performance, safety and testingEN 14743, Water conditioning equipment inside buildings — Softeners — Requirements for performance,
safety and testingEN 14812, Water conditioning equipment inside buildings — Chemical dosing systems — Pre-set dosing
systems — Requirements for performance, safety and testingEN 14897, Water conditioning equipment inside buildings — Devices using mercury low-pressure ultraviolet
radiators — Requirements for performances, safety and testingEN 14898, Water conditioning equipment inside buildings — Active media filters — Requirements for
performances, safety and testingEN 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
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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 testingEN 15848, Water conditioning equipment inside buildings — Adjustable chemical dosing systems —
Requirements for performance, safety and testingEN 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.
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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 disconnectionInstallations, 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
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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 supplyIn 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;
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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 componentsInstallation 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.
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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...
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