Chimneys - Concrete System Chimneys - Part 1: Non-balanced flue applications

This European Standard specifies the materials and the dimensional and performance requirements for straight concrete system chimneys for non-balanced flue applications comprising a concrete flue liner and a combination of compatible chimney components, which may be concrete flue blocks (see Clause 4), obtained or specified from one manufacturing source with product responsibility for the whole chimney.
This European Standard does not apply to concrete system chimneys with back ventilation.
This European Standard does not cover products designated wet (W) in conjunction with corrosion class 3.
This European Standard also applies to concrete system chimneys constructed from storey-height elements and flue blocks reinforced for handling.
NOTE   Any reference to the term flue blocks implies both flue blocks and their fittings, except where otherwise indicated.

Abgasanlagen - System-Abgasanlagen aus Beton - Teil 1: Raumluftabhängige Anwendungen

Diese Europäische Norm legt die Anforderungen an Werkstoffe, Abmessungen und die Leistungsanforderungen von geraden Systemabgasanlagen aus Beton für raumluftabhängige Anwendungen fest, welche aus einem Betoninnenrohr und einer Kombination von kompatiblen Abgasanlagen-Bauteilen bestehen, bei denen es sich um Betonformblöcke (siehe Abschnitt 4) handeln kann, die von einer Herstellungsquelle bezogen oder festgelegt werden, die die Produktverantwortung für die gesamte Abgasanlage trägt.
Diese Europäische Norm gilt nicht für hinterlüftete Systemabgasanlagen aus Beton.
Diese Europäische Norm gilt nicht für Produkte, die mit feucht (W) gekennzeichnet sind in Verbindung mit Korrosions¬beständigkeitsklasse 3.
Diese Europäische Norm gilt außerdem für Systemabgasanlagen aus Beton, die aus geschosshohen Elementen und mit einer Transportbewehrung versehenen Formblöcken gebaut sind.
ANMERKUNG   Sämtliche Verweisungen auf den Begriff „Formblöcke“ beziehen sich in dieser Norm immer sowohl auf Formblöcke als auch auf ihre Formstücke, außer wenn es anders angegeben ist.

Conduits de fumée - Conduits-systèmes de fumée en béton - Partie 1: Applications non équilibrées

La présente Norme européenne spécifie les exigences relatives aux matériaux, aux dimensions et aux performances des conduits-systèmes de fumée droits en béton pour applications sans ventouse comprenant un conduit intérieur en béton et des éléments manufacturés compatibles, qui peuvent être des conduits simple et multiparois en béton (voir Article 4), fabriqués ou spécifiés par un seul fabricant, responsable de la totalité du conduit de fumée.
La présente Norme ne s’applique aux conduits-systèmes de fumée ventilés par l’extérieur.
La présente norme ne couvre pas les produits désignés « humides » associés à la classe de corrosion 3.
La présente Norme européenne couvre également les conduit-systèmes de fumée hauteur d’étage et les conduits armés pour la manutention.
NOTE   Toute référence au terme conduit de fumée implique l’ensemble des conduits et leurs accessoires, sauf indication contraire.

Dimniki - Sistemski dimniki iz betona - 1. del: Tlačno neizravnan dimniški sistem

Ta evropski standard določa materiale, mere in zahtevane karakteristike za ravne sistemske dimnike iz betona za tlačno neizravnane dimniške sisteme, ki vključujejo betonske tuljave in kombinacijo združljivih sestavnih delov dimnikov, ki so lahko betonske tuljave (glej točko 4), pridobljene od enega proizvodnega vira, proizvodno odgovornega za celoten dimnik, ali ki jih določi ta vir.
Standard ne velja za betonske sistemske dimnike s povratnim prezračevanjem.
Ta standard ne zajema mokrih (W) označenih proizvodov skupaj s korozijskim razredom 3.
Ta evropski standard se uporablja tudi za betonske sistemske dimnike iz elementov za etažno višino in tuljav, ojačanih za namene rokovanja.
OPOMBA: Vsa sklicevanja na izraz tuljava pomenijo tuljave in njihove fitinge, razen če je navedeno drugače.

General Information

Status
Published
Publication Date
24-Feb-2015
Current Stage
9093 - Decision to confirm - Review Enquiry
Completion Date
17-Sep-2020

Buy Standard

Standard
EN 16497-1:2015
English language
58 pages
sale 10% off
Preview
sale 10% off
Preview

e-Library read for
1 day

Standards Content (sample)

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Abgasanlagen - System-Abgasanlagen aus Beton - Teil 1: Raumluftabhängige AnwendungenConduits de fumée - Conduits-systèmes de fumée en béton - Partie 1: Applications non équilibréesChimneys - Concrete System Chimneys - Part 1: Non-balanced flue applications91.100.30Beton in betonski izdelkiConcrete and concrete products91.060.40Dimniki, jaški, kanaliChimneys, shafts, ductsICS:Ta slovenski standard je istoveten z:EN 16497-1:2015SIST EN 16497-1:2015en,fr,de01-april-2015SIST EN 16497-1:2015SLOVENSKI

STANDARD
SIST EN 16497-1:2015
EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN 16497-1
February 2015 ICS 91.060.40 English Version
Chimneys - Concrete System Chimneys - Part 1: Non-balanced flue applications

Conduits de fumée - Conduits-systèmes de fumée en béton - Partie 1: Applications non équilibrées

Abgasanlagen - System-Abgasanlagen aus Beton - Teil 1: Raumluftabhängige Anwendungen This European Standard was approved by CEN on 29 November 2014.

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, Former Yugoslav Republic of Macedonia, 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 STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION EUROPÄISCHES KOMITEE FÜR NORMUNG
CEN-CENELEC Management Centre:
Avenue Marnix 17,

B-1000 Brussels © 2015 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 16497-1:2015 ESIST EN 16497-1:2015

EN 16497-1:2015 (E) 2
Contents
Page

Foreword ..............................................................................................................................................................4 1 Scope ......................................................................................................................................................5 2 Normative references ............................................................................................................................5 3 Terms and definitions ...........................................................................................................................5 4 Form ........................................................................................................................................................7 5 Materials .................................................................................................................................................8 5.1 General ....................................................................................................................................................8 5.2 Reaction to fire .......................................................................................................................................8 5.3 Reinforcement for handling ..................................................................................................................8 6 Surface treatment ..................................................................................................................................9 7 Tolerances on dimensions of individual concrete components ......................................................9 7.1 Declared dimensions .............................................................................................................................9 7.2 Straightness ...........................................................................................................................................9 7.3 Squareness of ends ............................................................................................................................ 10 8 Performance ........................................................................................................................................ 10 8.1 Heat stress resistance ........................................................................................................................ 10 8.2 Heat shock resistance ........................................................................................................................ 10 8.3 Thermal resistance ............................................................................................................................. 11 8.4 Gas tightness ...................................................................................................................................... 11 8.5 Abrasion resistance ........................................................................................................................... 11 8.6 Compressive strength ........................................................................................................................ 12 8.7 Corrosion resistance .......................................................................................................................... 12 8.8 Condensate resistance ...................................................................................................................... 12 8.9 Water vapour diffusion resistance .................................................................................................... 12 8.10 Bulk density ......................................................................................................................................... 12 8.11 Flexural strength under wind loading .............................................................................................. 12 8.12 Flow resistance ................................................................................................................................... 13 8.13 Freeze-thaw resistance ...................................................................................................................... 14 8.14 Resistance to fire external to external .............................................................................................. 14 8.15 Dangerous substances ...................................................................................................................... 14 8.16 Relative movement between inner liner and outer wall .................................................................. 14 8.17 Terminals ............................................................................................................................................. 14 9 Designation ......................................................................................................................................... 15 9.1 General ................................................................................................................................................. 15 9.2 Temperature class .............................................................................................................................. 16 9.3 Pressure class ..................................................................................................................................... 16 9.4 Resistance to condensate class ....................................................................................................... 17 9.5 Corrosion resistance class ................................................................................................................ 17 9.6 Resistance to fire class ...................................................................................................................... 18 10 Marking ................................................................................................................................................ 18 11 Product information............................................................................................................................ 18 12 Assessment and Verification of the Constancy of Performance (AVCP) ..................................... 19 12.1 General ................................................................................................................................................. 19 12.2 Type testing ......................................................................................................................................... 19 SIST EN 16497-1:2015

EN 16497-1:2015 (E) 3 12.3 Factory production control (FPC) ...................................................................................................... 22 Annex A (normative)

Test methods ................................................................................................................ 27 A.1 Squareness of ends test ..................................................................................................................... 27 A.2 Straightness test ................................................................................................................................. 28 A.3 Thermal performance tests ................................................................................................................ 29 A.4 Thermal resistance .............................................................................................................................. 30 A.5 Gas tightness test ............................................................................................................................... 30 A.6 Abrasion resistance test ..................................................................................................................... 31 A.7 Compressive strength test ................................................................................................................. 31 A.8 Corrosion and condensate resistance test ....................................................................................... 32 A.9 Water vapour diffusion resistance .................................................................................................... 36 A.10 Flexural strength under wind load ..................................................................................................... 36 A.11 Bulk density ......................................................................................................................................... 37 A.12 Ultimate compressive strength .......................................................................................................... 38 Annex B (informative)

Examples of concrete flue block shapes ................................................................. 39 B.1 Straight flue blocks ............................................................................................................................. 39 B.2 Flue block fittings - Tee/access/connection unit ............................................................................. 40 Annex C (normative)

Thermal resistance calculation method ..................................................................... 42 C.1 Thermal resistance of the individual element .................................................................................. 42 C.2 Thermal resistance of the chimney and of enclosures ................................................................... 42 Annex D (normative)

Requirements of sampling plan in accordance with ISO 2859-1 at an Acceptable Quality Level (AQL) of 10 % and inspection level S2 .................................................. 43 D.1 Acceptability determination ............................................................................................................... 43 D.2 Normal inspection ............................................................................................................................... 43 D.3 Reduced Inspection ............................................................................................................................ 45 D.4 Reduced to normal inspection ........................................................................................................... 45 D.5 Tightened inspection .......................................................................................................................... 45 D.6 Tightened to normal inspection ......................................................................................................... 46 D.7 Discontinuation of inspection ............................................................................................................ 46 Annex E (informative)

Recommended test sequence for performance characteristics ............................ 47 Annex ZA (informative)

Clauses of this European Standard addressing the provisions of the EU Construction Products Regulation .................................................................................................... 48 ZA.1 Scope and relevant characteristics ................................................................................................... 48 ZA.2 Procedure for AVCP of concrete system chimneys ........................................................................ 50 ZA.3 CE marking and labelling .................................................................................................................... 55 Bibliography ...................................................................................................................................................... 58

SIST EN 16497-1:2015
EN 16497-1:2015 (E) 4

Foreword This document (EN 16497-1:2015) 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 August 2015 and conflicting national standards shall be withdrawn at the latest by November 2016. 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 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 Regulations. For relationship with EU Regulations, see informative Annex ZA, which is an integral part of this document. This standard is one of a series of co-ordinated standards dealing with specification, design, and testing of chimneys, both single and multi-wall. The co-ordinated 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 — CEN/TS 16134, Chimney terminals — General requirements and material independent test methods — EN 16497-1, Chimneys — Concrete system chimneys — Part 1: Non-balanced flue applications — prEN 16497-2, Chimneys — Concrete system chimneys — Part 2: Balanced flue applications NOTE A chimney in accordance with EN 16497-1 can also be used for room-sealed applications using a separate combustion air supply in a non-balanced flue configuration. 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, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. SIST EN 16497-1:2015

EN 16497-1:2015 (E) 5 1 Scope This European Standard specifies the materials and the dimensional and performance requirements for straight concrete system chimneys for non-balanced flue applications comprising a concrete flue liner and a combination of compatible chimney components, which may be concrete flue blocks (see Clause 4), obtained or specified from one manufacturing source with product responsibility for the whole chimney. This European Standard does not apply to concrete system chimneys with back ventilation. This European Standard does not cover products designated wet (W) in conjunction with corrosion class 3. This European Standard also applies to concrete system chimneys constructed from storey-height elements and flue blocks reinforced for handling. NOTE Any reference to the term flue blocks implies both flue blocks and their fittings, except where otherwise indicated. 2 Normative references The following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. 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 13216-1, Chimneys - Test methods for system chimneys - Part 1: General test methods EN 13384-1, Chimneys - Thermal and fluid dynamic calculation methods - Part 1: Chimneys serving one appliance EN 14297:2004, Chimneys - Freeze-thaw resistance test method for chimney products EN ISO 7500-1, Metallic materials - Verification of static uniaxial testing machines - Part 1: Tension/compression testing machines - Verification and calibration of the force-measuring system (ISO 7500-1) ISO 2859-1, Sampling procedures for inspection by attributes - Part 1: Sampling schemes indexed by acceptance quality limit (AQL) for lot-by-lot inspection 3 Terms and definitions For the purposes of this document, the terms and definitions given in EN 1443:2003 and the following apply. 3.1 flue block fitting element fitted to the flue block Note 1 to entry: Such as an access opening or offset. 3.2 hollow wall flue block flue block having vertical cavities Note 1 to entry: Cavities may pass through both ends of the block. SIST EN 16497-1:2015

EN 16497-1:2015 (E) 6

3.3 declared internal transverse dimension internal dimension of the flue block measured perpendicular to the longitudinal axis 3.4 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 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: Joint features include a spigot/socket end etc. 3.7 multi-wall flue block flue block consisting of a flue liner and at least one additional wall 3.8 reinforced flue block flue block having reinforcement to assist handling (not for structural stability) 3.9 solid wall flue block flue block without cavities in the thickness of its walls SIST EN 16497-1:2015

EN 16497-1:2015 (E) 7 3.10 straight flue block flue block designed to be used in a vertical section of a chimney, without having any special characteristics and having the ends perpendicular to the axis of the flue 3.11 storey-height flue block factory made flue block having an overall height relating to the floor to floor height of a building 3.12 transfer block flue block designed to facilitate connection to another chimney product 3.13 concrete material formed by mixing cement, coarse and fine aggregate and water with or without the incorporation of admixtures or additions, which develops its properties by hydration of the cement [SOURCE: EN 206:2013, 3.1.1.1] 3.14 precast concrete concrete that is cast in a place other than its final location of use 3.15 balanced flue chimney system system where the air entry to the combustion air supply duct is adjacent to the discharge of combustion products from the flue, the inlet and outlet being so positioned that wind effects are substantially balanced 4 Form The concrete system chimney shall comprise of flue blocks, which may be of single wall or multi-wall construction. In the context of this standard the term ‘flue block’ means a vertical element of a system chimney which may also comprise the following items where appropriate: — flue blocks in accordance with EN 1858; — flue liners in accordance with EN 1857; — insulation layer; — outer wall elements in accordance with EN 12446, or EN 13069, or of appropriate metal; — mortar for jointing flue liners; — mortar for jointing a flue block or outer wall elements; — terminal in accordance with TS 16134; — chimney base; — cladding; — opening section; — reinforcement for handling. SIST EN 16497-1:2015

EN 16497-1:2015 (E) 8

Single wall or multi-wall flue blocks shall be manufactured in one of the following forms: — single flue; — multi-flue; — flue/ventilation combination. See Annex B for examples of typical flue block types. Flue blocks shall have a maximum of four flues 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 multi-wall concrete flue blocks the concrete liner and outer wall may be separated by an air space or insulation. 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 density of any insulation and the bulk density of the concrete elements shall be declared and when tested to A.11 the density shall be within ± 10 % of the declared value (see 8.10). Where a system chimney to this standard comprises CE marked chimney components in accordance with Clause 4, the above requirements are deemed to be satisfied. Products bearing regulatory marking in accordance with appropriate harmonized European specifications may be presumed to have the performances declared in the Declaration of Performance (DoP), although this does not replace the responsibility on the concrete system chimney manufacturer to ensure that the concrete system chimney as a whole is correctly manufactured and its component products have the declared performance values. 5.2 Reaction to fire In accordance with the Commission Decision 96/603/EC, as amended, concrete elements of system chimneys to this standard are classified as reaction to fire class A1 without tests provided they contain no more than a mass or volume fraction of 1 % (whichever is the more onerous) of homogeneously distributed organic materials. 5.3 Reinforcement for handling 5.3.1 Where a concrete element is reinforced for handling, the reinforcement shall have a maximum diameter of 8 mm and a minimum concrete cover of 15 mm on all sides for temperature classes up to and including T250 and a minimum concrete cover of 20 mm on all sides for all other temperature classes. 5.3.2 For concrete elements with a bulk density of less than 2 000 kg/m3, when measured in accordance with A.10, any reinforcement shall be protected against corrosion by one of the following means: a) use of stainless steel; SIST EN 16497-1:2015

EN 16497-1:2015 (E) 9 b) by completely covering any mild steel reinforcement with a coating (e.g. typically Portland cement CEM I or CEM II mixed with water to form a slurry, or epoxy resin). CE marked chimney components are deemed to satisfy these requirements. 6 Surface treatment Any surface treatment of the concrete elements, e.g. render, shall be applied, as described by the product manufacturer, before the product is tested. 7 Tolerances on dimensions of individual concrete components NOTE CE marked chimney components are deemed to satisfy these requirements. 7.1 Declared dimensions Tolerances on manufacturer's declared dimensions, including taper, shall be: a) Declared internal transverse dimensions below 300 mm: ± 3 mm above 300 mm: ± 1,5 % b) Declared height below 300 mm: ± 5 mm 300 mm to 700 mm: ± 7 mm above 700 mm: ± 10 mm c) Storey height elements constructed from individual blocks Declared height up to 3 m: ± 10 mm Declared height over 3 m: ± 30 mm d) Declared overall wall thickness below 10 mm: 21−+ mm 10 mm to 40 mm: 5,15−+ mm above 40 mm: %512−+ 7.2 Straightness 7.2.1 When tested as described in A.2, the limit deviation from the straightness of a straight concrete flue block 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. SIST EN 16497-1:2015

EN 16497-1:2015 (E) 10

7.2.2 When tested as described in A.2, for flue blocks having a manufactured height equal to or greater than 1 000 mm, the limit deviation shall not be greater than 0,5 % of the manufacturer's 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 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 for heat stress resistance 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 for heat shock resistance in accordance with 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 ± 1 min. Table 1 — Heat stress test temperature Temperature group Temperature of flue gas °C T600 050700+ T450 050500+ T400 050500+ T300 035350+ T250 030300+ T200 025250+ SIST EN 16497-1:2015

EN 16497-1:2015 (E) 11 T160 019190+ T140 017170+ T120 015150+ T100 012120+ T080 010100+ 8.3 Thermal resistance Thermal resistance shall be measured in accordance with the method given in A.4 (reference method) or calculated in accordance with the method given in Annex C and the value obtained declared. The value for CE marked flue block chimney components may be used. 8.4 Gas tightness When tested in accordance with A.5, the gas tightness expressed as a leakage rate of the flue block shall not be greater than the values specified in Table 4 for the relevant gas tightness class before and after the thermal performance tests. For factory production control the test sample may be one element. 8.5 Abrasion resistance All flue blocks having satisfied the gas tightness requirements of 8.4, when tested in accordance with A.6, the weight of the deposit collected shall not exceed the values in Table 2, and shall subsequently meet the gas tightness requirements of 8.4. Table 2 — Abrasion resistance Dry density Maximum abrasion of inner surface kg/m³ 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 SIST EN 16497-1:2015

EN 16497-1:2015 (E) 12

8.6 Compressive strength The manufacturer shall declare the structural height. When tested in accordance with A.7, straight flue blocks and straight fittings shall withstand an intensity of loading equivalent to four times the 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 The declared structural height can be derived from the ultimate compressive strength determined by the method in A.12. 8.7 Corrosion resistance When flue blocks designated condensate resistance class W (suitable for use in wet operating conditions) are tested as described in A.8, flue blocks shall be designated corrosion clas

...

Questions, Comments and Discussion

Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.