EN 1856-2:2009

Chimneys - Requirements for metal chimneys - Part 2: Metal flue liners and connecting flue pipes

This document specifies the performance requirements for rigid or flexible metal flue liners, rigid metal
connecting flue pipes and their fittings used to convey the products of combustion from appliances to the
outside atmosphere (including their supports).
Vitreous enamelled connecting flue pipes are also covered by this document.
Rigid flue liners can be used as flue liners for renovation or adaptation of existing chimneys and as flue liners
of custom built chimneys.
Flexible metal flue liners described in this document are exclusively for renovation or adaptation of existing
chimneys. Flexible connecting flue pipes and extensible flexible products designed to be compressed or
extended along their length are excluded from the scope of this document.
This document also specifies the requirements for marking, manufacturer's instructions, product information
and evaluation of conformity.
Single wall and multi-wall system chimney products are covered by EN 1856-1.

Abgasanlagen - Anforderungen an Metall-Abgasanlagen - Teil 2: Innenrohre und Verbindungsstücke aus Metall

Dieses Dokument legt die Leistungsanforderungen für starre und flexible Metallinnenrohre, starre Verbindungsstücke aus Metall und deren Formstücke fest, welche zur Abführung von Verbrennungs-produkten von Feuerstätten an die Außenluft verwendet werden (einschließlich ihrer Halterungen).
Emaillierte Verbindungsstücke sind ebenfalls Gegenstand dieses Dokuments.
Starre Innenrohre dürfen auch als Abgasrohre zur Sanierung oder Querschnittsverminderung bestehender Abgasanlagen sowie als Abgasrohre für maßgefertigte Abgasanlagen verwendet werden.
Flexible Metallinnenrohre nach diesem Dokument werden ausschließlich bei Sanierung oder Querschnitts-anpassung einer bestehenden Abgasanlage eingesetzt. Flexible Verbindungsstücke und ausziehbare flexible Produkte, die in ihrer Länge zusammengeschoben oder ausgezogen werden können, fallen nicht in den Anwendungsbereich dieses Dokuments.
Dieses Dokument legt darüber hinaus Anforderungen an die Kennzeichnung, die Anleitungen des Herstellers, die Produktangaben und die Konformitätsbewertung fest.
Vorschriften für Produkte einschaliger und mehrschaliger Systemabgasanlagen sind in EN 1856-1 enthalten.

Conduits de fumée - Prescriptions relatives aux conduits de fumée métalliques - Partie 2: Tubages et éléments de raccordement métalliques

Le présent document fixe les prescriptions de performances des tubages métalliques rigides ou flexibles, des
éléments de raccordement métalliques rigides et leurs éléments de conduit de fumée utilisés pour évacuer
dans l'atmosphère extérieure les produits de combustion provenant des appareils (supports compris).
Les éléments de raccordement en émail vitrifié relèvent aussi du présent document.
Les tubages rigides peuvent être utilisés comme parois intérieures soit pour la rénovation ou l’adaptation de
conduits de fumée déjà installés, soit pour les conduits de fumée construits sur site.
Les tubages métalliques flexibles décrits dans le présent document sont exclusivement destinés à la
rénovation ou à l'adaptation des conduits de fumée déjà installés. Les éléments de raccordement flexibles et
les produits flexibles extensibles conçus pour être comprimés ou déployés dans le sens de la longueur sont
exclus du domaine d’application du présent document.
Le présent document précise aussi les prescriptions relatives au marquage, aux instructions du fabricant, aux
informations afférentes au produit ainsi qu'à l'évaluation de la conformité.
Les produits à conduits simple paroi et à conduits multiparois sont traités dans l’EN 1856-1.

Dimniki - Zahteve za kovinske dimnike - 2. del: Kovinske tuljave in dimniški priključki

General Information

• Status: Published
• Publication Date: 02-Jun-2009
• Withdrawal Date: 30-Mar-2011
• ICS: 91.060.40 - Chimneys, shafts, ducts
• Technical Committee: CEN/TC 166 - Chimneys
• Drafting Committee: CEN/TC 166/SC 2 - Chimneys and their components with inner linings of metal
• Current Stage: 6060 - Definitive text made available (DAV) - Publishing
• Start Date: 03-Jun-2009
• Due Date: 12-Jun-2009
• Completion Date: 03-Jun-2009
• Directive: 305/2011 - Regulation (eu) No 305/2011 of the European Parliament and of the Council of 9 march 2011 laying down harmonised conditions for the marketing of construction products and repealing council directive 89/106/eec
• Directive: 89/106/EEC - Construction products
• Mandate: M/105 - Mandate to CEN/CENELEC concerning the execution of standardization work for harmonized standards on chimneys, flues and specific products
• Ref Project: SIST EN 1856-2:2009 - Chimneys - Requirements for metal chimneys - Part 2: Metal flue liners and connecting flue pipes

Relations

• Replaces: EN 1856-2:2004 - Chimneys - Requirements for metal chimneys - Part 2: Metal liners and connecting flue pipes
• Effective Date: 06-Jun-2009
• Revised: prEN 1856-2 - Chimneys - Requirements for metal chimneys - Part 2: Metal flue liners and connecting flue pipes
• Effective Date: 19-Jan-2023

Overview

EN 1856-2:2009 is the CEN European standard that sets out performance requirements for metal flue liners and connecting flue pipes used to convey combustion products to the outside atmosphere. The standard covers rigid and flexible metal flue liners, rigid connecting flue pipes and their fittings (including vitreous‑enameled connecting pipes), their supports, marking, manufacturer’s instructions, product information and the procedures for evaluation of conformity. Flexible flue liners covered by this standard are intended exclusively for renovation or adaptation of existing chimneys.

Key topics and technical requirements

EN 1856-2:2009 defines the essential technical characteristics and testable performance criteria, including:

• Dimensions and tolerances for flue liners and connecting pipes
• Mechanical resistance and stability (rigid liners/pipes and flexible liners)
• Resistance to fire for liners, connecting pipes and fittings
• Gas tightness requirements and test procedures (Annex A)
• Safety in use, covering:
  • thermal performance in normal operation
  • accidental human contact
  • thermal resistance
  • water vapour diffusion resistance
  • condensate penetration resistance
  • flow resistance
• Durability requirements:
  • corrosion resistance (material specifications and tests)
  • freeze–thaw resistance
  • flue liner seals
• Product information, marking and labelling, including manufacturer's instructions and minimum documentation requirements
• Evaluation of conformity, type testing, factory production control (FPC) and CE marking requirements in relation to the Construction Products Directive (89/106/EEC) (see Annex ZA)

Annex A contains normative test methods (e.g., gas tightness, tensile strength, crushing, flexibility, torsion, thermal testing) and Annex ZA explains the link to EU regulatory requirements.

Applications and practical value

EN 1856-2:2009 is used to ensure safety, performance and regulatory compliance of metal chimney components in a range of scenarios:

• Renovation or adaptation of existing masonry chimneys using flexible or rigid flue liners
• Construction of custom-built chimneys using rigid metal flue liners
• Specification and procurement of rigid connecting flue pipes and fittings for heating appliances (gas, oil, solid fuel)
• Providing standardized product information and CE conformity for manufacturers and suppliers

Who uses this standard

• Manufacturers of metal flue liners, connecting flue pipes and fittings
• Chimney system designers and specifiers
• Installers and chimney sweeps carrying out renovation or new installations
• Testing laboratories and certification bodies performing type testing and FPC assessments
• Architects, building inspectors and regulators verifying compliance with the Construction Products Directive

Related standards

• EN 1856-1 - covers single wall and multi-wall system chimney products and complements Part 2.
• Annex ZA of EN 1856-2 - links this standard to EU CE marking and the Construction Products Directive (89/106/EEC).

Keywords: EN 1856-2:2009, metal chimneys, metal flue liners, connecting flue pipes, chimney standards, CEN, CE marking, Construction Products Directive.

Standards Content (Sample)

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.SULNOMXþNLAbgasanlagen - Anforderungen an Metall-Abgasanlagen - Teil 2: Innenrohre und Verbindungsstücke aus MetallConduits de fumée - Prescriptions relatives aux conduits de fumée métalliques - Partie 2: Tubages et éléments de raccordement métalliquesChimneys - Requirements for metal chimneys - Part 2: Metal flue liners and connecting flue pipes91.060.40Dimniki, jaški, kanaliChimneys, shafts, ductsICS:Ta slovenski standard je istoveten z:EN 1856-2:2009SIST EN 1856-2:2009en,fr,de01-oktober-2009SIST EN 1856-2:2009SLOVENSKI
STANDARDSIST EN 1856-2:20041DGRPHãþD

EUROPEAN STANDARDNORME EUROPÉENNEEUROPÄISCHE NORMEN 1856-2June 2009ICS 91.060.40Supersedes EN 1856-2:2004
English VersionChimneys - Requirements for metal chimneys - Part 2: Metalflue liners and connecting flue pipesConduits de fumée - Prescriptions relatives aux conduits defumée métalliques - Partie 2: Tubages et éléments deraccordement métalliquesAbgasanlagen - Anforderungen an Metall-Abgasanlagen -Teil 2: Innenrohre und Verbindungsstücke aus MetallThis European Standard was approved by CEN on 7 May 2009.CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this EuropeanStandard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such nationalstandards 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 translationunder the responsibility of a CEN member into its own language and notified to the CEN Management Centre has the same status as theofficial versions.CEN members are the national standards bodies of Austria, Belgium, Bulgaria, 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 STANDARDIZATIONCOMITÉ EUROPÉEN DE NORMALISATIONEUROPÄISCHES KOMITEE FÜR NORMUNGManagement Centre:
Avenue Marnix 17,
B-1000 Brussels© 2009 CENAll rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN 1856-2:2009: ESIST EN 1856-2:2009

Test methods . 22 A.1 Measure of diameter of flexible flue liner . 22 A.1.1 Procedure . 22 A.1.2 Results . 22 A.2 Gas tightness . 22 A.2.1 General . 22 A.2.2 Conditioning and apparatus . 22 A.2.3 Procedure . 22 A.2.4 Results . 22 A.3 Tensile strength . 22 A.3.1 Test assembly . 22 A.3.2 Procedure . 23 A.3.3 Test results . 23 A.4 Crushing resistance . 23 A.4.1 Test apparatus . 23 A.4.2 Procedure . 23 A.4.3 Test results . 23 A.5 Flexibility test . 24 A.5.1 Test apparatus . 24 A.5.2 Test conditioning . 24 A.5.3 Procedure . 24 A.5.4 Results . 24 A.6 Torsion strength test . 25 A.6.1 Test apparatus . 25 A.6.2 Test assembly . 25 A.6.3 Procedure . 25 A.6.4 Results . 26 A.7 Thermal performance test . 26 A.7.1 Apparatus . 26 A.7.2 Test structures . 27 A.7.3 Test samples . 28 A.7.4 Thermal test procedure . 28 Annex B (normative)
Choice of size for type test and sampling . 32 B.1 General . 32 B.2 Thermal testing . 32 B.3 Mechanical tests . 32 B.4 Gas tightness . 32 B.5 Samples . 32 B.6 Factory production control. 32 B.7 Nature of changes requiring further type test . 32 Annex ZA (informative)
Relationship between this European Standard and the Essential Requirements of Construction Products Directive (89/106/EEC) . 33 ZA.1 Scope and relevant characteristics . 33 ZA.2 Procedure(s) for attestation of conformity of rigid or flexible flue liners and rigid connecting flue pipes . 36 ZA.2.1 System(s) of attestation of conformity . 36 ZA.2.2 EC Declaration of conformity . 37 ZA.3 CE marking and labelling. 38 Bibliography . 43
supersedes EN 1856-2:2004. This document has been prepared under a mandate given to CEN by the European Commission and the European Free Trade Association, and supports essential requirements of EC Directive 89/106/EEC. For relationship with EC Directive 89/106/EEC, see informative Annex ZA, which is an integral part of this document. 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, 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. SIST EN 1856-2:2009

EN 1856-1:2009 except wind load. 6.1.2 Flexible flue liners 6.1.2.1 General Flexible flue liners shall comply with the following requirements. 6.1.2.2 Compressive strength of fittings and supports The manufacturer shall declare the relevant design load of fittings and supports. The compressive strength requirements shall be in accordance with 6.2.1.1 and 6.2.1.2 of EN 1856-1:2009. 6.1.2.3 Tensile strength The manufacturer shall declare the relevant design load of flexible flue liners. The flexible flue liner, when tested in accordance with A.3, shall meet the gas tightness requirement of 6.3. 6.1.2.4 Crushing resistance When tested in accordance with A.4, the outside diameter of the flexible flue liner shall not have been reduced to less than 75 % of its original nominal diameter and shall meet the gas tightness requirement of 6.3. 6.1.2.5 Flexibility When tested in accordance with A.5.2, the flexible flue liner shall meet the gas tightness requirement of 6.3. When tested in accordance with A.5.2, the inner layer of the double skin flexible flue liner shall remain overlapped at the minimum bending radius declared by the manufacturer. Oval flexible liners shall be subjected to the test method of A.5.2 in both axes of the oval shape. 6.1.2.6 Torsion strength When a flexible flue liner is tested in accordance with A.6, it shall meet the gas tightness requirement of 6.3. 6.1.2.7 Pulling force Before the thermal performance test, as per 6.4.1.1 (see also A.7), it shall be checked that the pulling force measured in A.7.3.1.1 shall be less than 0,5 kN. SIST EN 1856-2:2009

EN 1859:2009 with the exception of the test rig (Figures 4 and 5) which shall be replaced by the test rig described in Annex A, it shall meet the gas tightness requirements defined in 6.3. 6.2.2 Rigid connecting flue pipes and fittings The manufacturer shall declare the minimum distance to combustible material, either measured according to Annex A or calculated as at least three times their nominal diameter but not less than 375 mm (as specified in EN 15287-1:2007, 4.3.9.3, paragraph 3, first sentence for connecting flue pipes naturally ventilated) and the requirements of 6.4.1 shall be met. The maximum surface temperature of combustible material adjacent to a rigid connecting flue pipe and its fittings designated as sootfire resistant, at the distance declared by the manufacturer, shall not exceed 100 °C when related to an ambient temperature of 20 °C. When a rigid connecting flue pipe and its fittings designated as sootfire resistant are tested to the test method described in A.7.3.3 and A.7.4, it shall also meet the gas tightness requirement of 6.3. 6.2.3 Flexible flue liners and fittings When a flexible flue liner and its fittings, designated as sootfire resistant, are tested according to the test method described in A.7.4.3, they shall meet the gas tightness requirements defined in 6.3. The test sample shall allow the test ball defined in A.7.3.1.2 to move freely down. 6.3 Gas tightness When tested in accordance with A.2 for flexible flue liners and their fittings or with 4.4 of EN 1859:2009 for rigid flue liners and rigid connecting flue pipes and their fittings, the leakage rate shall not be greater than those specified in Table 1. Table 1 — Leakage rate Pressure type Test pressure Pa Leakage rate/flue surface area l ⋅⋅⋅⋅ s-1 ⋅⋅⋅⋅ m-2 N1 40 < 2,0 N2 20 < 3,0 P1 200 < 0,006 P2 200 < 0,120 H1 200 and 5 000 < 0,006 H2 200 and 5 000 < 0,120 6.4 Safety in use 6.4.1 Thermal performance at normal operating conditions 6.4.1.1 Rigid flue liners and fittings When a flue liner and its fittings are tested according to the heat stress test method of EN 1859 with the exception of the test rig (Figures 4 and 5) which shall be replaced by the test rig described in A.7.2, they shall meet the gas tightness of 6.3. SIST EN 1856-2:2009

Table 2 — Material specification for connecting flue pipes Material type Material No. Symbol 00
99 c Cast iron
Normal steel EN 10025-5
Aluminium coated steel
EN AW – 4047A
EN AW - 1200
EN AW - 6060
1.4301
1.4307
1.4401
1.4404 b
1.4432
1.4539
Double sided vitreous enamelled steel To be declared -
S 235 JRG 2
EN 10154
EN AW Al Si 12 ª
EN AW-AL 99,0A
EN AW-Al MgSi
X5CrNi 18-10
X2CrNi 18-9
X5CrNiMo 17-12-2
X2CrNiMo 17-12-2
X2CrNiMo 17-12-3
X1NiCrMoCu 25-20-5
-
To be declared a
Cu < 0,1 %, Zn < 0,15 %. b
Equivalent for material no. 1.4404 = 1.4571 (symbol X6CrNiMoTi17-12-2). c
A material type not currently specified in the table (and assigned a material number) may be assigned the material type 99 for the purpose of designating the product in accordance with Clause 9. It may be considered as a suitable flue liner material provided that it has passed the appropriate corrosion test according to its intended designation V1, V2, or V3. The manufacturer shall declare the material specification (see Clause 7).
EXAMPLE L 40045 represents a flue liner made of 1.4401 stainless steel with a thickness of 0,45 mm. SIST EN 1856-2:2009

99 c EN AW – 4047A
EN AW - 1200
EN AW - 6060
1.4301
1.4307
1.4401
1.4404 b
1.4432
1.4539
To be declared EN AW Al Si 12 ª
EN AW-AL 99,0 ª
EN AW-Al MgSi
X5CrNi 18-10
X2CrNi 18-9
X5CrNiMo 17-12-2
X2CrNiMo 17-12-2
X2CrNiMo 17-12-3
X1NiCrMoCu 25-20-5
To be declared a
Cu < 0,1 %, Zn < 0,15 %. b
Equivalent for material no. 1.4404 = 1.4571 (symbol X6CrNiMoTi17-12-2). c
A material type not currently specified in the table (and assigned a material number) may be assigned the material type 99 for the purpose of designating the product in accordance with Clause 9. It may be considered as a suitable flue liner material provided that it has passed the appropriate corrosion test according to its intended designation V1, V2, or V3. The manufacturer shall declare the material specification (see Clause 7).
6.5.2 Freeze thaw resistance Metal flue liners and connecting flue pipes are considered to satisfy freeze thaw resistance requirements. 6.5.3 Flue liner seals Flue liner seals shall be in accordance with EN 14241-1. 7 Product information 7.1 Manufacturer's instructions The manufacturer‘s instructions shall be available in the language of each country where the product is placed on the market. SIST EN 1856-2:2009

EXAMPLES
Rigid connecting flue - EN 1856-2-T400-N1-W - Vm-L40045- G (xx) M or G (xx) NM a
Product description
Document number
Temperature class (see Table 3)
Pressure level (N or P or H)
Condensate resistance (W: wet or D: dry)
Corrosion resistance (durability against corrosion) (see 6.7.1 and Annex A of
EN 1856-1:2009)
Connecting flue pipe material specification (see Table 2)
Sootfire resistance (G: yes or O: no) and distance to combustible material xx (in mm) and if measured M and if not measured NM (only for connecting flue pipes)
a See 7.2.1.
Flexible flue liner - EN 1856-2-T400-N1 - W -Vm-L40010 a - G
Product description
Document number
Temperature class (see Table 4)
Pressure level (N or P or H)
Condensate resistance (W: wet or D: dry)
Corrosion resistance (durability against corrosion) (see 6.5.1 and Annex A of EN 1856-1:2009)
Flue liner material specification (see Table 3)
Sootfire resistance (G: yes or O: no)
a Inner skin for double skin flexible flue liners.
the operations referred to under i) and j),
only the operations under i) or,
only those under j). The operations under i) centre as much on the intermediate states of the product as on manufacturing machines and their adjustment, and equipment etc. These controls and tests and their frequency are chosen based on product type and composition, the manufacturing process and its complexity, the sensitivity of product features to variations in manufacturing parameters etc. The manufacturer shall have or have available the installations, the equipment and the personnel which enable him to carry out the
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