SIST EN 14989-2:2008

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Chimneys - Requirements and test methods for metal chimneys and material independent air supply ducts for roomsealed heating applications - Part 2: Flue and air supply ducts for room sealed appliancesDimniki - Zahteve in preskusne metode za kovinske dimnike in od materialov neodvisne kanale za dovod zraka za ogrevalne naprave v zaprtih prostorih - 2. del: Kanali za odvod dima in dovod zraka v zaprtih prostorihConduits de fumée et systemes d'alimentation en air pour appareils étanches -
Exigences et méthodes d'essai - Partie 2 : Conduits de fumée et d'alimentation en air pour appareils étanches individuelsAbgasanlagen — Anforderungen und Prüfverfahren für Metall-Abgasanlagen und materialunabhängige Luftleitungen für raumluftunabhängige Anlagen — Teil 2: Abgas- und Luftleitungen für raumluftunabhängige FeuerstättenTa slovenski standard je istoveten z:EN 14989-2:2007SIST EN 14989-2:2008en,fr,de91.060.40ICS:SLOVENSKI
STANDARDSIST EN 14989-2:200801-marec-2008







EUROPEAN STANDARDNORME EUROPÉENNEEUROPÄISCHE NORMEN 14989-2December 2007ICS 91.060.40; 91.140.30 English VersionChimneys - Requirements and test methods for metal chimneysand material independent air supply ducts for roomsealedheating applications - Part 2: Flue and air supply ducts for roomsealed appliancesConduits de fumée - Exigences et méthodes d'essai pourconduits de fumée métalliques et conduits d'alimentationen air pour tous matériaux pour des appareils de chauffageétanches - Partie 2: Conduits de fumée et d'alimentation enair pour appareils étanchesAbgasanlagen - Anforderungen und Prüfverfahren fürMetall-Abgasanlagen und materialunabhängigeLuftleitungen für raumluftunabhängige Anlagen - Teil 2:Abgas- und Luftleitungen für raumluftunabhängigeFeuerstättenThis European Standard was approved by CEN on 10 November 2007.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: rue de Stassart, 36
B-1050 Brussels© 2007 CENAll rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN 14989-2:2007: E



EN 14989-2:2007 (E) 2 Contents Page Foreword.5 Introduction.6 1 Scope.7 2 Normative references.7 3 Terms and definitions.7 4 Symbols and abbreviations.8 5 Manufacturer's declaration for type testing.11 6 Dimensions and tolerances.11 7 Performance requirements.11 7.1 General.11 7.2 Mechanical resistance and stability.11 7.2.1 Compressive strength.11 7.2.2 Tensile strength.12 7.2.3 Lateral strength.12 7.3 Resistance to fire.12 7.3.1 Internal to external.12 7.3.2 External to external.12 7.4 Hygiene, health and environment.12 7.4.1 Gastightness of the flue duct.12 7.4.2 Gastightness of the air supply duct.13 7.5 Safety in use.13 7.5.1 Thermal performance.13 7.5.2 Thermal resistance.14 7.5.3 Rainwater ingress.14 7.5.4 Flow resistance of the flue and air supply ducts and fittings.14 7.5.5 Water vapour diffusion resistance.15 7.5.6 Condensate penetration resistance.15 7.6 Materials.15 7.6.1 Flue ducts and other parts in contact with combustion products.15 7.6.2 Air supply duct and other parts not in contact with combustion products.16 7.6.3 Additional information on plastics and elastomers.16 7.6.4 Freeze/thaw.16 8 Product information.16 8.1 Manufacturer's instructions.16 8.2 Minimum information to be included in the manufacturer's instructions.16 8.3 Appliance adapter.17 9 Marking.17 9.1 General.17 9.2 Flue and air supply duct.17 9.3 Packaging.18 9.4 Chimney plate.18 10 Designation.19 10.1 General.19 10.2 Temperature classes and test temperature.19 10.3 Pressure class.20 10.4 Condensate resistance class.20



EN 14989-2:2007 (E) 3 10.5 Corrosion resistance.20 10.5.1 Corrosion resistance.20 10.5.2 Flue duct material specification.21 10.6 Resistance to fire – Soot fire resistance, and distance to combustible material.21 11 Evaluation of conformity.21 11.1 General.21 11.2 Type testing.22 11.2.1 Initial type testing (ITT).22 11.2.2 Further type testing.22 11.2.3 Sampling for type testing.22 11.3 Factory production control (FPC).22 11.3.1 General.22 11.3.2 Equipment.24 11.3.3 Raw materials and components.24 11.3.4 Product testing and evaluation.24 11.3.5 Non conforming products.24 12 Test methods.24 12.1 Mechanical resistance and stability.24 12.1.1 Compressive strength.24 12.1.2 Tensile strength.26 12.1.3 Lateral strength.26 12.2 Hygiene, health and environment.28 12.2.1 Gastightness.28 12.3 Safety in use.29 12.3.1 Thermal performance.29 12.3.2 Thermal resistance.41 12.3.3 Rainwater ingress.48 12.3.4 Flow resistance of the flue and air supply ducts.50 12.3.5 Vapour and condensate resistance test.53 12.3.6 Condensate resistance test.56 12.4 Low temperature test.59 Annex A (informative)
Preferred dimensions.60 A.1 General.60 A.2 Dimensions of the push-in spigots for a separate air/flue configuration.60 A.3 Dimensions of the push-in spigots for a concentric air/flue configuration.62 Annex B (normative)
Coefficients of flow resistance.64 Annex C (normative)
Choice of size for type test and sampling.67 Annex D (normative)
Sampling for factory production control.68 D.1 Incoming material.68 D.1.1 Sampling plans.68 D.1.2 Acceptable quality level (AQL).68 D.1.3 Normal, tightened or reduced inspection.68 D.1.4 Single, double, multiple or sequential sampling.68 D.1.5 Batch quantity.68 D.1.6 The inspection level.68 D.2 In-process inspection.69 D.2.1 All dimensional aspects.69 D.2.2 Joint leakage tests.69 D.2.3 Insulation weight checks.69 D.2.4 Volume and density checks.69 D.2.5 Finished goods checks.69 Annex E (normative)
Factory production control.70 E.1 Insulation material.70 E.2 Metals, including coatings.70 E.3 Supports.70 E.4 Seals and sealants.70



EN 14989-2:2007 (E) 4 E.5 Manufacturing checks.71 E.5.1 Dimensions.71 E.5.2 Other checks.71 Annex ZA (informative)
Clauses of this European Standard addressing the provisions of the EU Construction Products Directive.72 ZA.1 Scope and relevant characteristics.72 ZA.2 Procedure for attestation of conformity of metal liners, connecting flue pipes and fittings flue and material independent air supply ducts for room sealed appliances.74 ZA.2.1 System of attestation of conformity.74 ZA.2.2 EC Declaration of conformity.75 ZA.3 CE marking and labelling.76 Bibliography.79



EN 14989-2:2007 (E) 5 Foreword This document (EN 14989-2:2007) has been prepared by Technical Committee CEN/TC 166 “Chimneys”, the secretariat of which is held by UNI. 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 June 2008, and conflicting national standards shall be withdrawn at the latest by September 2009. 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 EU Directive(s). For relationship with EU Directive(s), see informative Annex ZA, which is an integral part of this document. EN 14989 Chimneys — Requirements and test methods for metal chimneys and material independent air supply ducts for roomsealed heating applications consists of the following parts: Part 1: Vertical air/flue terminals for C6-type appliances Part 2: Flue and air supply ducts for room sealed appliances 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.



EN 14989-2:2007 (E) 6 Introduction This European Standard covers flue and air supply ducts for room sealed appliances meaning the combination of chimney and air supply duct needed for the correct functioning of a room sealed appliance. The requirements in this European Standard have been drawn up in connection with the widespread use of so-called room sealed appliances in which the combustion air supply duct and flue duct may be separate or as a concentric configuration. The requirements for flue ducts for separate air/flue configurations are in EN 1856-1. The requirements for terminals for room sealed appliances type C62 and C63 are covered by EN 14989-1.



EN 14989-2:2007 (E) 7 1 Scope This European Standard specifies requirements and test methods for metal flue ducts material independent air supply ducts for room sealed appliances. It also specifies the requirements for marking, manufacturer's instruction, product information and evaluation of conformity. NOTE 1 Recommendations for preferred dimensions of products are given in the informative Annex A. NOTE 2 In this European Standard, only general requirements are specified for elastomeric and plastic components. Elastomeric and plastic products used in flue systems are covered by separate standards, i.e. EN 14241-1 and EN 14471. 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 1443:2003, Chimneys — General requirements EN 1856-1:2003, Chimneys — Requirements for metal chimneys — Part 1: System chimney products EN 1856-2:2004, Chimneys — Requirements for metal chimneys — Part 2: Metal liners and connecting flue pipes EN 1859:2000, Chimneys — Metal chimneys — Test methods EN 14241-1, Chimneys — Elastomeric seals and elastomeric sealants — Material requirements and test methods — Part 1: Seals in flue liners EN 60529, Degrees of protection provided by enclosures (IP Code) (IEC 60529:1989) ISO 2859-1, Sampling procedures for inspection by attributes — Part 1: Sampling schemes indexed by acceptance quality limit (AQL) for lot-by-lot inspection BS 1042-2.1, Measurement of fluid flow in closed conduits — Velocity area method — Method using Pitot static tubes 3 Terms and definitions For the purposes of this document, the terms and definitions given in EN 1443:2003, EN 1856-1:2003,
EN 1856-2:2004, EN 1859:2000 and the following apply. 3.1 air supply duct independent duct in a building or an integral part of an air/flue configuration conveying combustion air to a room sealed appliance 3.2 concentric air/flue configuration configuration in which the chimney flue is fully surrounded by the air supply duct



EN 14989-2:2007 (E) 8 3.3 flow resistance difference between the static pressures in the flue connection and the air supply duct connection under dynamic conditions 3.4 flue duct duct for conveying the products of combustion 3.5 nominal diameter (size) whole number representing the diameter of the flue, expressed in millimetres 3.6 nominal flow rate amount of air which flows at the nominal velocity through a duct with nominal diameter 3.7 nominal velocity velocity in a duct which characterises the velocity used in the test (the actual test
velocity may differ from the nominal velocity, because the actual inside diameter differs from the nominal diameter) 3.8 push-in spigot part of a pipe or fitting which is pushed into the socket of another pipe or fitting, thus resulting in a connection 3.9 room sealed appliance appliance in which the combustion circuit (air supply, combustion chamber, heat exchanger and evacuation of the products of combustion) is sealed with respect to the room in which the appliance is installed 3.10 separate air/flue configuration configuration in which the air supply duct and the chimney flue are separate (non-concentric) 3.11 socket part of a pipe or fitting which is pushed over the push-in spigot of another pipe or fitting, thus resulting in a connection 3.12 terminal adapter part of the terminal used to connect the terminal to the air supply duct and the flue. It may include the transition from parallel to concentric configuration 4 Symbols and abbreviations αa coefficient of heat transfer between the supply air and the outer surface of the flue duct in
KmW2⋅ αaB coefficient of heat transfer between the outside of the air supply duct and the ambient air in KmW2⋅ αi coefficient of heat transfer between the flue gas and the inner surface of the flue duct in
KmW2⋅



EN 14989-2:2007 (E) 9 αiB coefficient of heat transfer between the supply air and the inner surface of the air supply duct in KmW2⋅ ηA dynamic viscosity of air for Tm in 2msN⋅ ηB dynamic viscosity of air for TmB in 2msN⋅ λA Thermal conductivity of air for Tm in KmW⋅ λB thermal conductivity of air for TmB in KmW⋅ Λ1 thermal resistance of the flue duct in
WKm2⋅ BΛ1 thermal resistance of the air supply duct in WKm2⋅ ρ density of air at 20 °C = 1,2 in 3mkg ρe density of air for Te in 3mkg ρm density of air for Tm in 3mkg ρmB density of air for TmB in 3mkg ψ coefficient of friction of the flue -
ψB the higher of the value of the coefficient of friction of the inside of the air supply duct and the outside of the flue duct -
ψsmooth coefficient of friction of the flue for hydraulically smooth flow -
ψsmoothB coefficient of friction of the air supply for hydraulically smooth flow -
ζ flow resistance factor, friction factor -
ζA declared flow resistance factor of the air supply duct -
ζF declared flow resistance factor of the flue duct -
AB cross-sectional area of the air supply passage in m² cp specific heat capacity of air for Tm in KkJ⋅g cpB specific heat capacity of air for TmB in KkJ⋅g d1 external diameter of the push-in spigot of the flue duct in
mm d2 internal diameter of the socket of the flue duct in
mm D1 external diameter of the push-in spigot of the air supply in
mm D2 internal diameter of the duct socket of the air supply duct in
mm Dh hydraulic diameter of the flue in
m Dha hydraulic diameter of the outside of the flue duct in
m



EN 14989-2:2007 (E) 10 DhaB hydraulic diameter of the outside of the air supply duct in m DhB hydraulic diameter of the air supply passage in m DhiB hydraulic diameter of the inside of the air supply duct in m Dn declared nominal diameter of the flue duct in mm kb coefficient of heat transmission between the flue and the air supply passage at temperature equilibrium in
KmW2⋅ kBb coefficient of heat transmission between the supply air and the ambient air at temperature equilibrium in KmW2⋅ L length of the test segment in m L0 available insertion length in
mm Nu Nusselt number for the flue -
Nua Nusselt number for the outside of the flue duct -
NuB Nusselt number for a reference pipe flow -
NuiB Nusselt number for the inside of the air supply duct -
∆p static pressure difference, measured friction in
Pa Pr Prandtl number of the flue duct -
PrB Prandtl number of the supply air duct -
r mean value of roughness of the inner wall of the flue duct in m rB the higher of the value of the mean value of roughness of the inside of the air supply duct and the outside of the flue duct in m Re Reynolds number of the flue -
ReB Reynolds number of the air supply passage -
Srad correction factor for radiation from the outer surface of the flue duct to the inner surface of the air supply duct -
Ta ambient test temperature in oC Te air temperature at the flue inlet in °C TeB air temperature at the air supply inlet in °C Tm mean temperature in the flue in °C TmB mean temperature in the air supply in °C To air temperature at the flue outlet in °C ToB air temperature at air supply outlet in °C Tu ambient air temperature
in °C U circumference of the inside of the flue in m Ua circumference of the outside of the flue duct in m UiB circumference of the inside of the air supply duct in m V• test flow rate
in sm3 wn velocity of the flow inside the flue under nominal operating conditions
in sm wmB average velocity of the supply air in sm



EN 14989-2:2007 (E) 11 ww Wind speed in sm x centre to centre distance of the air supply duct and the flue duct for separate air/flue configuration in
mm
5 Manufacturer's declaration for type testing The manufacturer shall provide the relevant information in Clause 8 and, in addition, shall declare, for the flue and air supply duct: a) the manufacturing drawings including declared internal d
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