EN 16497-2:2017

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Abgasanlagen - System-Abgasanlagen aus Beton - Teil 2: Raumluftunabhängige AnwendungenConduits de fumée - Conduits-systèmes de fumée en béton - Partie 2: Applications équilibréesChimneys - Concrete System Chimneys - Part 2: Balanced flue applications91.100.30Beton in betonski izdelkiConcrete and concrete products91.060.40Dimniki, jaški, kanaliChimneys, shafts, ductsICS:Ta slovenski standard je istoveten z:EN 16497-2:2017SIST EN 16497-2:2017en,fr,de01-maj-2017SIST EN 16497-2:2017SLOVENSKI
STANDARD
EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN 16497-2
March
t r s y ICS
{ sä r x rä v r English Version
Chimneys æ Concrete System Chimneys æ Part
tã Balanced flue applications Conduits de fumée æ ConduitsæSystèmes de fumée en béton æ Partie
tã Applications équilibrées
Abgasanlagen æ SystemæAbgasanlagen aus Beton æ Teil
tã LuftæAbgasæAnlagen This European Standard was approved by CEN on
t z November
t r s xä
egulations which stipulate the conditions for giving this European Standard the status of a national standard without any alterationä Upætoædate lists and bibliographical references concerning such national standards may be obtained on application to the CENæCENELEC Management Centre or to any CEN memberä
translation under the responsibility of a CEN member into its own language and notified to the CENæCENELEC Management Centre has the same status as the official versionsä
CEN members are the national standards bodies of Austriaá Belgiumá Bulgariaá Croatiaá Cyprusá Czech Republicá Denmarká Estoniaá Finlandá Former Yugoslav Republic of Macedoniaá Franceá Germanyá Greeceá Hungaryá Icelandá Irelandá Italyá Latviaá Lithuaniaá Luxembourgá Maltaá Netherlandsá Norwayá Polandá Portugalá Romaniaá Serbiaá Slovakiaá Sloveniaá Spainá Swedená Switzerlandá Turkey and United Kingdomä
EUROPEAN COMMITTEE FOR STANDARDIZATION COMITÉ EUROPÉEN DE NORMALISATION EUROPÄISCHES KOMITEE FÜR NORMUNG
CEN-CENELEC Management Centre:
Avenue Marnix 17,
B-1000 Brussels
t r s y CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Membersä Refä Noä EN
s x v { yæ tã t r s y ESIST EN 16497-2:2017

Contents Page European foreword . 6 1 Scope . 7 2 Normative references . 7 3 Terms and definitions . 7 4 Form . 9 5 Materials . 10 5.1 General . 10 5.2 Reaction to fire . 10 5.3 Reinforcement for handling . 11 6 Surface treatment . 11 7 Tolerances on dimensions of individual concrete components. 11 7.1 Declared dimensions . 11 7.2 Straightness . 12 7.3 Squareness of ends . 12 8 Performance . 12 8.1 Heat stress resistance . 12 8.2 Heat shock resistance . 12 8.3 Thermal resistance . 13 8.4 Gas tightness . 13 8.5 Abrasion resistance . 13 8.6 Compressive strength . 14 8.7 Corrosion resistance . 14 8.8 Condensate resistance . 14 8.9 Water vapour diffusion resistance . 15 8.10 Bulk density . 15 8.11 Flexural strength under wind loading . 15 8.12 Flow resistance . 16 8.12.1 Flow resistance of straight flue duct (rF) . 16 8.12.2 Flow resistance of straight air supply duct (rA) . 16 8.12.3 Flow resistance of fittings . 16 8.13 Freeze–thaw resistance . 16 8.14 Resistance to fire external to external . 16 8.15 Dangerous substances . 16 8.16 Relative movement between inner liner and outer wall . 17 8.17 Terminals . 17 8.17.1 Type III . 17 8.17.2 Flow resistance of terminals . 17 8.17.3 Wind velocity pressure of type III terminals. 17 8.17.4 Recirculation factor of type III termination . 17 8.17.5 Pressure equalising opening . 17 8.17.6 Rainwater ingress . 17 8.17.7 Icing behaviour . 18 9 Designation. 18 SIST EN 16497-2:2017

Test methods . 23 A.1 Squareness of ends test . 23 A.1.1 Apparatus . 23 A.1.2 First procedure . 25 A.1.3 Test result — first procedure . 25 A.1.4 Second procedure . 25 A.1.5 Test result — second procedure . 25 A.2 Straightness test . 25 A.2.1 Apparatus . 25 A.2.2 Procedure . 25 A.2.3 Test result . 26 A.3 Thermal performance tests . 26 A.4 Thermal resistance . 26 A.4.1 Test Method . 26 A.4.2 Test results . 27 A.5 Gas tightness test . 27 A.5.1 Test Method . 27 A.5.2 Test result . 27 A.6 Abrasion resistance test . 27 A.6.1 Test Method . 27 A.6.2 Test result . 27 A.7 Compressive strength test . 27 A.7.1 Apparatus . 27 A.7.2 Preparation of test sample . 27 A.7.3 Test procedure . 28 A.7.4 Test result . 28 SIST EN 16497-2:2017

A.8 Corrosion and condensate resistance test . 28 A.8.1 Test apparatus. 28 A.8.2 Acid solution and test solution . 31 A.8.3 Test sample . 31 A.8.4 Conditioning . 31 A.8.5 Test procedure . 31 A.8.6 Test results . 32 A.9 Water vapour diffusion resistance . 32 A.9.1 Test method . 32 A.9.2 Test results . 32 A.10 Flexural strength under wind load . 32 A.10.1 Principle . 32 A.10.2 Preparation of test specimen . 33 A.10.3 Test procedure . 33 A.10.4 Test result . 33 A.11 Bulk density . 33 A.11.1 Apparatus . 33 A.11.2 Procedure. 33 A.11.3 Test result . 33 A.12 Ultimate compressive strength . 34 A.12.1 Test procedure . 34 A.12.2 Test result . 34 Annex B (informative)
Examples of concrete flue block shapes . 35 B.1 General . 35 B.2 Multi-flued flue blocks . 36 Annex C (normative)
Thermal resistance calculation method . 37 C.1 Thermal resistance of the individual element . 37 C.2 Thermal resistance of the chimney and of enclosures . 37 Annex D (normative)
Requirements of sampling plan according to ISO 2859-1:1999 at an Acceptable Quality Level (AQL) of 10 % and inspection level S2 . 38 D.1 Acceptability determination . 38 D.1.1 Single sampling . 38 D.1.2 Double sampling . 38 D.2 Normal inspection . 38 D.3 Reduced Inspection . 40 D.4 Reduced to normal inspection. 41 SIST EN 16497-2:2017

Recommended test sequence for performance characteristics . 42 Annex ZA (informative)
Relationship of this European Standard with Regulation (EU) No.305/2011 . 43 ZA.1 Scope and relevant characteristics . 43 ZA.2 System of Assessment and Verification of Constancy of Performance (AVCP) . 45 ZA.3 Assignment of AVCP tasks . 45 Bibliography . 48
European foreword This document (EN 16497-2:2017) has been prepared by Technical Committee CEN/TC 166 “Chimneys”, the secretariat of which is held by ASI. 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 2017, and conflicting national standards shall be withdrawn at the latest by December 2018. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN shall not be held responsible for identifying any or all such patent rights. 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 Regulation, see informative Annex ZA, which is an integral part of this document. In this European Standard, the Annexes A, C and D are normative (not forming part of the product specification) and Annexes E and ZA are informative. This standard is one of a series of coordinated standards dealing with specification, design, and testing of chimneys, both single and multi wall. The coordinated package of standards is further divided by material of construction and this European Standard is one of a series of specifications and execution documents dealing with design and installation of concrete chimney products and systems. The standards in this series for concrete chimney products and systems are: EN 1857, Chimneys — Components — Concrete flue liners; EN 1858, Chimneys — Components — Concrete flue blocks; EN 12446, Chimneys — Components — Concrete outer wall elements. EN 16497-1-balanced flue applications EN 16497-2 According to the CEN-CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standardã Austriaá Belgiumá Bulgariaá Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. SIST EN 16497-2:2017

3.2 hollow wall flue block flue block having vertical cavities Note 1 to entry: Cavities may pass through both ends of the block. 3.3 manufacturer's declared internal transverse dimension internal dimension of the flue block measured perpendicular to the longitudinal axis 3.4 manufacturer's declared height internal height of the flue block Note 1 to entry: Examples of measurement are shown in Figure 1.
a) with rebate b) with plain end Key H internal height Figure 1 — Manufacturer's declared height 3.5 manufacturer's declared structural height maximum constructional height of the flue blocks as declared by the manufacturer 3.6 manufacturer's declared overall wall thickness dimensions at its thinnest point, between the inside face of the flue and the outside face of the flue block, not measured at any joint feature Note 1 to entry: Examples for joint features are spigot/socket end 3.7 multi wall flue block flue block consisting of a flue liner and at least one additional wall SIST EN 16497-2:2017

— mortar for jointing a flue block or outer wall elements; — terminal; — chimney base; — cladding; — opening section; — reinforcement for handling. — Pressure equalising opening — Combustion air supply duct. This duct may be an additional passage within a flue block, or a separate duct, possibly of other materials. Single wall or multi-wall flue blocks shall be manufactured in one of the following forms: — single flue; — multi-flue; — flue/combustion air/ventilation combination. NOTE See Annex B for examples of typical flue block types. Flue blocks shall have a maximum of four flues, combustion air or ventilation passages. 5 Materials 5.1 General The wall or walls of concrete flue liners or concrete flue blocks shall be precast concrete. For multiwall concrete flue blocks the concrete liner and outer wall may be separated by an air space or insulation. The material of a separate combustion air supply duct may be same as the flue liner or flue block or be of other materials, e.g. metal tube, but it shall have the appropriate resistance to fire external to external. Materials used in the manufacture of system chimneys shall be identified for factory production control purposes. When insulation forms part of a system chimney, it shall be of bonded material as specified by the manufacturer. If the insulation is supplied as a separate item, it shall be installed in accordance with the system chimney manufacturer’s installation instructions. The manufacturer shall declare the density of any insulation and the bulk density of the concrete elements and when tested to A.11 the density shall be within ± 10 % of the declared value (see 8.10). CE-marked chimney components are deemed to satisfy these requirements. 5.2 Reaction to fire In accordance with Commission Decision 96/603/EC, as amended, concrete elements of system chimneys to this standard are classified as reaction to fire class A1 without test provided they contain SIST EN 16497-2:2017

below 10 mm :12+−=mm=10=mm=to=40=mm=:=55,1+−=mm=above=40=mm=:=125+−=%=The=tolerances=of=other=materials=e.g.=metal=ducts=shall=be=according=to=the=relevant=chimney=standard=for=that=material.=7.2 Straightness 7.2.1 When tested as described in A.2, the limit deviation from straightness of a straight concrete components of manufacturer's declared height greater than 300 mm and less than 1 000 mm shall not be greater than 1 % of the declared height. 7.2.2 When tested as described in A.2 for concrete components having a manufactured height equal to or greater than 1 000 mm, the limit deviation shall not be greater than 0,5 % of the manufacturers declared height. 7.3 Squareness of ends When tested in accordance with either procedure described in A.1, the test sample shall not touch the upright for the first procedure and the dimension G shall not be greater than 5 mm for the second procedure. 8 Performance 8.1 Heat stress resistance 8.1.1 When concrete system chimneys, including those designated soot fire resistant, are tested in accordance with A.3 at the test temperature appropriate to the designation specified in Table 1, the system chimney shall subsequently meet the requirements of 8.4 and 8.5. When a concrete system chimney is multi-flued with an equal wall thickness, the heat stress test shall be carried out on the flue with the highest designation and temperature. 8.1.2 The distance to combustible material, xx, shall be declared. The maximum temperature measured on the surface of adjacent combustible materials shall not exceed 85 °C when related to an ambient temperature of 20 °C. 8.2 Heat shock resistance 8.2.1 Following the heat stress resistance test in 8.1, when a concrete system chimney designated as soot fire resistant is tested as described in A.3 at a flue gas temperature of 1 000 °C for a period of 30 min ± 1 min, the block shall subsequently meet the requirements of 8.4 and 8.5. 8.2.2 The distance to combustible material, xx, shall be declared. The maximum temperature measured on the surface of adjacent combustible materials shall not exceed 100 °C when related to an ambient temperature of 20 °C, when the test assembly is tested at the test temperature of 1 000 °C over a period of 30 min. SIST EN 16497-2:2017

Table 2 — Abrasion resistance Dry density kg/m3 Maximum abrasion of inner surface kg/m2 1 000 1,000 1 100 1,100 1 200 1,200 1 300 1,300 1 400 1,400 1 500 1,500 1 600 1,600 1 700 1,700 1 850 1,850 CE-marked chimney components are deemed to satisfy these requirements 8.6 Compressive strength The manufacturer shall declare the structural height. When tested as described in A.7, straight flue blocks and straight fittings shall withstand an intensity of loading equivalent to four times the manufacturer's declared structural height. The declared structural height is dependent on the lowest compressive strength of the individual walls of the flue block, and/or any opening element. The value of CE-marked chimney components may be used NOTE The manufacturer's declared structural height can be derived from the ultimate compressive strength determined by the method in A.12. 8.7 Corrosion resistance When flue duct designated condensate resistance class W (suitable for use in wet operating conditions) are tested as described in Clause A.8, flue duct shall be designated corrosion class 1 or class 2 depending on the test solution used, provided that the mass loss of the test pieces is not greater than 0,1 % of the initial mass. Flue ducts designated condensate resistance class D (dry) and which meet the requirements of 8.1 and 8.2, may be assigned corrosion resistance class 3. CE-marked chimney components are deemed to satisfy these requirements 8.8 Condensate resistance When flue duct designated W (for use in wet operating conditions) are tested as described in A.8,the mperiod shall not be greater than 0,5 gh «1m «2 of the flue duct external surface. Otherwise the flue duct shall be designated D (dry) CE-marked chimney components are deemed to satisfy these requirements SIST EN 16497-2:2017

Key 1 top of chimney excluding any terminal or chimney pot 2 last point of support l least lateral overall external dimension of the flue block Figure 2 — Explanation of last point of support SIST EN 16497-2:2017

8.12 Flow resistance 8.12.1 Flow resistance of straight flue duct (rF) The mean value of roughness for a straight flue duct shall be determined either: a) by testing in accordance with EN 13216-1, or b) from data obtained from EN 13384-1. Values obtained from CE marked products may be used 8.12.2 Flow resistance of straight air supply duct (rA) The mean value of roughness for a straight air supply duct shall be determined either: a) by testing in accordance with EN 13216-1, or b) from data obtained from EN 13384-1. Values obtained from CE marked products may be used 8.12.3 Flow resistance of fittings FA) due to a directional and/or cross sectional and/or mass flow change shall be determined either: a) by testing in accordance with EN 13216-1, or b) from data obtained from EN 13384-1. Values obtained from CE marked products may be used 8.13 Freeze–thaw resistance Where national regulations require freeze/thaw resistance of flue blocks, they shall be tested in accordance with EN 14297. The product shall not present any damage of type 7, 8, 9 and 10 in accordance with EN 14297:2004, Table 1. CE-marked chimney components designated freeze/thaw resistant are deemed to satisfy these requirements 8.14 Resistance to fire external to external Where national regulations require resistance to fire external to external (see EN 1443) of flue blocks, they shall be evaluated and declared in accordance with those regulations. 8.15 Dangerous substances Materials used in products shall not release any dangerous substances in excess of the maximum permitted levels specified in a relevant European Standard for the material, or permitted in the national regulations of the member state of destination. NOTE See note 2 in ZA.1. SIST EN 16497-2:2017

¶ 0,6 for all terminals and wind attack angles and — cFA
· 0 for terminals for chimneys operating under negative and positive pressure. 8.17.4 Recirculation factor of type III termination The manufacturer shall declare the recirculation factor, determined in accordance with CEN/TS 16134:2011, 8.2.3. The recirculation factor is limited by the appliance the terminal shall be used. 8.17.5 Pressure equalising opening For multi inlet air - flue chimneys the manufacturer shall declare the size of the pressure equalising opening. The cross section of the pressure equalising opening shall be at least 15 % of the cross section of the flue liner. For multi inlet air - flue chimneys working under overpressure no pressure equalising opening is allowed. The distance between the pressure equalising opening and the lowest inlet shall be 1,5 m for dry operating chimneys and 2,5 m for wet operating chimneys. This distance may be reduced to half if the inlet is equal to or less than 45°. No equalising openings are necessary for single inlet chimneys. 8.17.6 Rainwater ingress A terminal declared to be rainwater resistant shall be tested in accordance with CEN/TS 16134 with or without wind according to the manufacturer's d
...