SIST EN 806-4:2011

SLOVENSKI STANDARD
SIST EN 806-4:2011
01-april-2011
Specifikacije za napeljave za pitno vodo v stavbah - 4. del: Inštalacije
Specifications for installations inside buildings conveying water for human consumption -
Part 4: Installation
Technische Regeln für Installationen innerhalb von Gebäuden für Trinkwasser für den
menschlichen Gebrauch - Teil 4: Installation
Spécifications techniques relatives aux installations d'eau destinée à la consommation
humaine à l'intérieur des bâtiments - Partie 4 : Installation
Ta slovenski standard je istoveten z: EN 806-4:2010
ICS:
13.060.20 Pitna voda Drinking water
91.140.60 Sistemi za oskrbo z vodo Water supply systems
SIST EN 806-4:2011 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN 806-4:2011

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SIST EN 806-4:2011


EUROPEAN STANDARD
EN 806-4

NORME EUROPÉENNE

EUROPÄISCHE NORM
March 2010
ICS 91.140.60
English Version
Specifications for installations inside buildings conveying water
for human consumption - Part 4: Installation
Spécifications techniques relatives aux installations d'eau Technische Regeln für Trinkwasser-Installationen - Teil 4:
destinée à la consommation humaine à l'intérieur des Installation
bâtiments - Partie 4 : Installation
This European Standard was approved by CEN on 23 January 2010.

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 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 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 and United Kingdom.






EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

Management Centre: Avenue Marnix 17, B-1000 Brussels
© 2010 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 806-4:2010: E
worldwide for CEN national Members.

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SIST EN 806-4:2011
EN 806-4:2010 (E)
Contents Page
Foreword .4
1 Scope .5
2 Normative references .5
3 Terms and definitions .7
4 Work on site .7
4.1 General .7
4.2 Handling of materials.7
4.3 Bending pipes .7
4.4 Jointing of pipes .7
4.4.1 General .7
4.4.2 Pipe materials and jointing methods .8
4.4.3 Boilers and instantaneous water heaters connection . 12
4.5 Joining pipes to cisterns . 12
4.5.1 General . 12
4.5.2 Steel pipes to steel, fibre cement or glass reinforced plastics cisterns . 12
4.5.3 Copper or plastics pipe to steel, fibre cement or glass reinforced plastics cisterns . 12
4.5.4 Concrete cisterns . 13
4.5.5 Thermo-plastics cisterns . 13
4.6 Underground pipe laying . 13
4.7 Pipework in buildings . 13
4.7.1 Allowances for thermal movement and prevention of noise . 13
4.7.2 Pipe fixings . 14
4.7.3 Concealed (hidden) piping . 14
4.7.4 Piping passing through structures . 16
4.7.5 Clearance of structural members . 16
4.7.6 Penetration of fire walls and floors . 17
4.7.7 Drainage and prevention of air locks . 17
4.7.8 Pipe positioning . 17
4.8 Valves and taps . 17
4.9 Identifying and recording piping locations . 17
4.9.1 Location of pipes and valves . 17
4.9.2 Identification of above ground piping. 17
4.9.3 Record of installation . 18
4.9.4 Identification of valves installed above ground . 18
4.10 Water conditioning devices . 18
5 Dissimilar metals. 18
5.1 General . 18
5.2 Combination of pipes and fittings/valves made of different metals . 18
5.3 Flow-direction-rule . 19
6 Commissioning . 19
6.1 Filling and hydrostatic pressure testing of the installations inside buildings conveying
water for human consumption . 19
6.1.1 General . 19
6.1.2 Steel pipes, stainless steel pipes and copper pipes (linear elastic material) . 19
6.1.3 Plastics pipes (elastic or visco-elastic material) . 20
6.2 Flushing the pipework . 23
6.2.1 General procedure . 23
6.2.2 Flushing with water. 23
6.2.3 Flushing procedure with water/air mixture . 24
6.3 Disinfection . 25
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SIST EN 806-4:2011
EN 806-4:2010 (E)
6.3.1 General. 25
6.3.2 Selection of disinfectants . 26
6.3.3 Methods for using disinfectants . 26
6.3.4 Disinfection of storage cisterns and distributing pipes . 27
6.3.5 Localised repairs . 27
Annex A (normative) Pipe system material specifications, jointing procedures and pipe
installation for different types of materials. 28
A.1 General. 28
A.2 Connections between different materials . 28
A.2.1 Above-ground pipework . 28
A.2.2 Below-ground pipework . 28
A.3 Ductile iron . 28
A.3.1 General. 28
A.3.2 Types of joints . 28
A.3.3 Jointing procedures . 29
A.4 Stainless steel piping . 29
A.4.1 General. 29
A.4.2 Types of joints . 29
A.4.3 Preparation of tube . 30
A.4.4 Corrosion . 31
A.5 Hot dip galvanised steel piping . 31
A.5.1 General. 31
A.5.2 Types of joints . 31
A.5.3 Welded joints . 32
A.5.4 Corrosion . 32
A.6 Copper piping . 32
A.6.1 General. 32
A.6.2 Categories of joints . 32
A.6.3 Jointing procedures . 33
A.6.4 Bending. 36
A.6.5 Drift expanding . 36
A.6.6 Corrosion . 36
A.7 Plastic piping . 36
A.7.1 Types of joints . 36
A.7.2 Preparation of pipe . 37
A.7.3 Fused joints . 37
A.7.4 Solvent cement fittings . 38
A.7.5 Compression fittings . 39
A.7.6 Push-fit fittings . 40
A.7.7 Flanged fittings . 40
Annex B (informative) Calculation and compensation for thermal effects of pipes . 42
B.1 Thermal expansion of metal pipes . 42
B.2 Thermal expansion of plastics pipes . 43
B.3 Positioning of anchor points . 44
B.4 Installation of pipes allowing expansion by means of a flexible arm . 44
B.5 Installation of pipes allowing expansion by means of an expansion loop . 46
B.6 Installation of pipes allowing expansion and with continuous support and guide brackets . 47
B.7 Installation of pipes allowing expansion and with guide brackets . 48
B.8 Installation of pipes on continuous horizontal supports . 48
B.9 Installation of pipes not allowing expansion . 48
B.10 Positioning of anchor points . 49
B.11 Installation between anchor points where continuous pipe stiffening is provided (PE-X,
PB, PP and PE) . 49
B.12 Installation of pipes supported only at the anchor points (for PE-X, PB, PP and PE) . 50
Annex C (informative) Recommended maximum spacings of fixings for metal pipes . 52
Bibliography . 53
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SIST EN 806-4:2011
EN 806-4:2010 (E)
Foreword
This document (EN 806-4:2010) has been prepared by Technical Committee CEN/TC 164 “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 September 2010, and conflicting national standards shall be
withdrawn at the latest by September 2010.
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 authorities.
This standard has been written in the form of a practice specification. It is the fourth part of a European
Standard 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 and the United Kingdom.


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SIST EN 806-4:2011
EN 806-4:2010 (E)
1 Scope
This European Standard specifies requirements and gives recommendations for the installation of potable
water installations within buildings and for pipework outside buildings but within the premises in accordance
with EN 806-1. This European Standard is applicable to new installations, alterations and repairs.
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 200, Sanitary tapware — Single taps and combination taps for water supply systems of type 1 and type 2
— General technical specification
EN 545:2006, Ductile iron pipes, fittings, accessories and their joints for water pipelines — Requirements and
test methods
EN 681-1, Elastomeric seals — Material requirements for pipe joint seals used in water and drainage
applications — Part 1: Vulcanized rubber
st nd rd
EN 751-1, Sealing materials for metallic threaded joints in contact with 1 , 2 and 3 family gases and hot
water — Part 1: Anaerobic jointing compounds
st nd rd
EN 751-2, Sealing materials for metallic threaded joints in contact with 1 , 2 and 3 family gases and hot
water — Part 2: Non-hardening jointing compounds
st nd rd
EN 751-3, Sealing materials for metallic threaded joints in contact with 1 , 2 and 3 family gases and hot
water — Part 3: Unsintered PTFE tapes
EN 805, Water supply — Requirements for systems and components outside buildings
EN 806-1:2000, Specifications for installations inside buildings conveying water for human consumption —
Part 1: General
EN 806-2, Specification for installations inside buildings conveying water for human consumption — Part 2:
Design
EN 817, Sanitary tapware — Mechanical mixing valves (PN 10) — General technical specifications
EN 1044, Brazing — Filler metals
EN 1057, Copper and copper alloys — Seamless, round copper tubes for water and gas in sanitary and
heating applications
EN 1092 (all parts), Flanges and their joints — Circular flanges for pipes, valves, fittings and accessories, PN
designated
EN 1111, Sanitary tapware — Thermostatic mixing valves (PN 10) — General technical specification
EN 1254-1, Copper and copper alloys — Plumbing fittings — Part 1: Fittings with ends for capillary soldering
or capillary brazing to copper tubes
EN 1254-2, Copper and copper alloys — Plumbing fittings — Part 2: Fittings with compression ends for use
with copper tubes
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SIST EN 806-4:2011
EN 806-4:2010 (E)
EN 1254-4, Copper and copper alloys — Plumbing fittings — Part 4: Fittings combining other end connections
with capillary or compression ends
EN 1254-5, Copper and copper alloys — Plumbing fittings — Part 5: Fittings with short ends for capillary
brazing to copper tubes
EN 1514-1, Flanges and their joints — Dimensions of gaskets for PN-designated flanges — Part 1: Non-
metallic flat gaskets with or without inserts
EN 1717:2000, Protection against pollution of potable water in water installations and general requirements of
devices to prevent pollution by backflow
EN 10088-2, Stainless steels — Part 2: Technical delivery conditions for sheet/plate and strip of corrosion
resisting steels for general purposes
EN 10226 (all parts), Pipe threads where pressure tight joints are made on the threads
EN 10240, Internal and/or external protective coatings for steel tubes — Specification for hot dip galvanized
coatings applied in automatic plants
EN 10242, Threaded pipe fitting in malleable cast iron
EN 10255, Non-Alloy steel tubes suitable for welding and threading — Technical delivery conditions
EN 10312, Welded stainless steel tubes for the conveyance of aqueous liquids including water for human
consumption — Technical delivery conditions
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 15161, Water conditioning equipment inside buildings — Installation, operation, maintenance and repair
EN 29454-1:1993, Soft soldering fluxes — Classification and requirements — Part 1: Classification, labelling
and packaging (ISO 9454-1:1990)
EN 60335-1, Household and similar electrical appliances — Safety — Part 1: General requirements (IEC
60335-1:2001, modified)
EN ISO 228-1, Pipe threads where pressure-tight joints are not made on the threads — Part 1: Dimensions,
tolerances and designation (ISO 228-1:2000)
EN ISO 4016, Hexagon head bolts — Product grade C (ISO 4016:1999)
EN ISO 4034:2000, Hexagon nuts — Product grade C (ISO 4034:1999)
EN ISO 7091, Plain washers — Normal series — Product grade C (ISO 7091:2000)
EN ISO 9453, Soft solder alloys — Chemical compositions and forms (ISO 9453:2006)
EN ISO 15874-3, Plastics piping systems for hot and cold water installations — Polypropylene (PP) — Part 3:
Fittings (ISO 15874-3:2003)
EN ISO 15875-3, Plastics piping systems for hot and cold water installations — Crosslinked polyethylene (PE-
X) — Part 3: Fittings (ISO 15875-3:2003)
EN ISO 15876-3, Plastics piping systems for hot and cold water installations — Polybutylene (PB) — Part 3:
Fittings (ISO 15876-3:2003)
EN ISO 15877-3, Plastics piping systems for hot and cold water installations — Chlorinated poly(vinyl
chloride) (PVC-C) — Part 3: Fittings (ISO 15877-3:2009)
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SIST EN 806-4:2011
EN 806-4:2010 (E)
EN ISO 21003-3, Multilayer piping systems for hot and cold water installations inside buildings — Part 3:
Fittings (ISO 21003-3:2008)
IEC 60449, Voltage bands for electrical installations of buildings
3 Terms and definitions
For the purposes of this document, the terms and definitions given in EN 806-1:2000 and EN 1717:2000 apply.
4 Work on site
4.1 General
This Clause gives requirements and recommendations on how installation work should be carried out in order
to ensure the system fulfils its requirements for long-term safe and economic use and maintain environmental
sustainability.
All products shall comply with the relevant product standards and, while awaiting the adoption of verifiable
European criteria, with the national regulations.
4.2 Handling of materials
Pipes, fittings and other components shall be protected, handled and stored carefully to avoid damage and to
prevent contamination by dirt, building materials, vermin and other extraneous matter.
Manufacturers' advice shall be followed concerning how their products should be loaded, transported,
unloaded and stored.
4.3 Bending pipes
Bending of a straight pipe shall be carried out by using purpose designed equipment.
When forming bends, care shall be taken to avoid rippling and throating and restricting the diameter of pipes
when forming bends.
Bent pipes shall be inspected for damage before use.
Hot dipped zinc coated steel pipes over DN 50 shall not be bent (see EN 10240 and EN 10255).
4.4 Jointing of pipes
4.4.1 General
All joints shall be made in accordance with the relevant standards and the manufacturer's instructions. Care
shall be taken to establish satisfactory jointing techniques for all water service pipework. Pipes shall be cut at
right angles to their axes. Burrs and ridges shall be removed before assembling a joint. If gouges, splits or
damage to the pipe end are apparent, the end of the pipe should be re-cut to remove them. Materials used to
make the joint should be prevented from entering the waterways. All pipes and fittings shall be internally clean
and free from particles of sand, soil, metal filings and chips, etc.
All pipe joints shall be permanently watertight. Pipe joints shall be clad, plastered over or otherwise covered
only after having been pressure tested (see 6.1), unless national regulations require accessibility of certain
joints, then compliance with those national regulations shall be achieved.
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SIST EN 806-4:2011
EN 806-4:2010 (E)
During installation all inlets and outlets of finished or partly finished pipework, to which draw off fittings or other
components have not yet been connected, shall be tightly closed with stoppers, caps or blind flanges. Closed
stop valves shall not count as tight closures.
When the installation is complete, flushing shall be carried out (see 6.2) to remove dust, debris and flux
residues. Disinfection should also be undertaken when necessary (see 6.3).
All components shall be prepared in accordance with the relevant European Standards. Where threaded joints
are used on metallic components, the sealing materials shall comply with EN 751-1, EN 751-2 and EN 751-3.
Where threaded joints are used on plastic components, the sealing materials shall comply with EN 751-3.
For pipes in buildings and buried pipes within the premises, all joints shall be of endload bearing type.
4.4.2 Pipe materials and jointing methods
A listing of different jointing methods for different pipe materials and connection joints is listed in the following
tables:
 Table 1: Jointing methods for metallic pipes;
 Table 2: Jointing methods for plastics pipes (PE-X, PE, PVC-U);
 Table 3: Jointing methods for plastics pipes (PVC-C, PP, PB);
...