EN 1858:2017
(Main)Chimneys - Components - Concrete flue blocks
Chimneys - Components - Concrete flue blocks
This European Standard specifies the materials, dimensional and performance requirements for precast concrete flue blocks as defined in Clause 3 for use in chimneys. The flue blocks may be of single wall or multi wall construction. The standard does not apply to flue blocks with back ventilation.
This standard does not cover products designated wet (W) in conjunction with corrosion class 3.
The standard also specifies a type of flue block to dimensionally coordinate with masonry unit coursing height, referred to as a type B flue block.
This standard also applies to storey-height 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 - Bauteile - Betonformblöcke
Dieses Dokument legt die Anforderungen an die Werkstoffe, die Abmessungen sowie die Leistungs-anforderungen an Formblöcke aus Fertigbeton, wie in Abschnitt 3 festgelegt, zur Verwendung in Abgasanlagen fest. Die Formblöcke können einschalig oder mehrschalig sein. Diese Norm gilt nicht für Formblöcke, die hinterlüftet sind.
Diese Norm gilt nicht für Produkte, die mit feucht (W) gekennzeichnet sind in Verbindung mit Korrosions-beständigkeitsklasse 3.
Diese Norm beschreibt außerdem einen Typ von Formblöcken, der mit der Schichthöhe des Mauerwerkes maßlich abgestimmt ist und als Typ B (Verbundblock) bezeichnet wird.
Diese Europäische Norm gilt außerdem für geschosshohe und mit einer Transportbewehrung versehene Formblöcke.
ANMERKUNG Sämtliche Verweisungen auf den Begriff "Formblöcke" beziehen sich sowohl auf Formblöcke als auch auf ihre Formstücke, außer wenn es anders angegeben ist.
Conduits de fumée - Composants - Conduits de fumée simple et multiparois en béton
Le présent document spécifie les exigences relatives aux matériaux, aux dimensions et aux performances applicables aux conduits préfabriqués en béton, tels que définis à l’Article 3, et constitutifs de conduits de fumée. Les conduits peuvent être à simple paroi ou multiparois. La norme ne s'applique pas aux conduits ventilés par l’extérieur.
La présente norme ne couvre pas les produits désignés « humides » (W) associés à la classe de corrosion 3.
La norme spécifie également un type de conduit de dimensions coordonnées à la hauteur d'assise des blocs de maçonnerie, et désigné par conduit de type B (conduits appareillés).
La présente Norme européenne couvre également les conduits hauteur d'étage et les boisseaux armés pour la manutention.
NOTE Toute référence au terme « conduit de fumée » implique l’ensemble des conduits et leurs accessoires, sauf indication contraire.
Dimovodne naprave - Sestavni deli - Betonski bloki za dimovodne naprave
General Information
Relations
Standards Content (Sample)
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Dimovodne naprave - Sestavni deli - Betonski bloki za dimovodne napraveAbgasanlagen - Bauteile - BetonformblöckeConduits de fumée
- Composants - Conduits de fumée simple et multiparois en bétonChimneys - Components - Concrete flue blocks91.100.30Beton in betonski izdelkiConcrete and concrete products91.060.40Dimniki, jaški, kanaliChimneys, shafts, ductsICS:Ta slovenski standard je istoveten z:FprEN 1858kSIST FprEN 1858:2016en,fr,de01-september-2016kSIST FprEN 1858:2016SLOVENSKI
STANDARD
EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
FINAL DRAFT
FprEN 1858
June
t r s x ICS
{ sä r x rä v râ
{ sä s r rä u r Will supersede EN
s z w zã t r r z ªA sã t r s sEnglish Version
Chimneys æ Components æ Concrete flue blocks Conduits de fumée
æ Composants æ Conduits de fumée simple et multiparois en béton
Abgasanlagen æ Bauteile æ Betonformblöcke This draft European Standard is submitted to CEN members for second unique acceptance procedureä It has been drawn up by
If this draft becomes a European Standardá CEN members are bounwhich stipulate the conditions for giving this European Standard the status of a national standard without any alterationä
This draft European Standard was established by CEN in three ofer language made by 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 Slovakiaá Sloveniaá Spainá Swedená Switzerlandá Turkey andUnited Kingdomä
Recipients of this draft are invited to submitá with their commentsá notification of any relevant patent rights of which they are aware and to provide supporting documentationä
Warning ã This document is not a European Standardä It is distributed for review and commentsä It is subject to change without notice and shall not be referred to as a European Standardä
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 x CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Membersä Refä Noä FprEN
s z w zã t r s x EkSIST FprEN 1858:2016
FprEN 1858:2016 (E) 2 Contents Page European foreword . 5 1 Scope . 6 2 Normative references . 6 3 Terms and definitions . 6 4 Materials . 8 4.1 General . 8 4.2 Reaction to fire . 9 5 Reinforcement for handling . 9 6 Surface treatment . 9 7 Form, dimensions and tolerances . 9 7.1 Form . 9 7.2 Type B flue blocks . 9 7.3 Tolerances . 10 7.4 Straightness . 11 7.5 Squareness of ends . 11 8 Performance . 11 8.1 Heat stress resistance . 11 8.2 Heat shock resistance . 12 8.3 Thermal resistance . 12 8.4 Gas tightness . 13 8.5 Abrasion resistance . 13 8.6 Compressive strength . 13 8.7 Corrosion resistance . 13 8.8 Condensate resistance . 14 8.9 Bulk density . 14 8.10 Flexural strength under wind loading . 14 8.11 Flow resistance . 15 8.11.1 Flow resistance of straight flue blocks . 15 8.11.2 Flow resistance of fittings . 15 8.12 Freeze–thaw resistance . 15 8.13 Resistance to fire external to external . 15 8.14 Dangerous substances . 15 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 . 17 10 Marking . 18 11 Product information . 18 kSIST FprEN 1858:2016
FprEN 1858:2016 (E) 3 12 Assessment and verification of constancy of performance - AVCP . 18 12.1 General . 18 12.2 Type testing . 19 12.2.1 General . 19 12.2.2 Test samples, testing and compliance criteria . 19 12.2.3 Test reports . 21 12.2.4 Shared other party results . 21 12.2.5 Cascading determination of the product type results . 21 12.3 Factory production control (FPC) . 23 12.3.1 General . 23 12.3.2 Requirements . 23 12.3.3 Product specific requirements . 25 12.3.4 Initial inspection of factory and of FPC . 26 12.3.5 Continuous surveillance of FPC . 27 12.3.6 Procedure for modifications . 27 12.3.7 One-off products, pre-production products (e.g. prototypes) and products produced in very low quantity . 27 Annex A (normative)
Test methods . 29 A.1 Squareness of ends test . 29 A.2 Straightness test . 30 A.3 Heat stress resistance and heat shock test . 31 A.4 Thermal resistance . 37 A.5 Gas tightness test . 39 A.6 Abrasion resistance test . 41 A.7 Compressive strength test . 42 A.8 Corrosion and condensate resistance test . 43 A.9 Flexural strength under wind load. 47 A.10 Bulk density . 48 A.11 Ultimate compressive strength . 49 Annex B (informative)
Examples of concrete flue block shapes . 50 B.1 Straight flue blocks . 50 B.2 Flue block fittings - Tee/access/connection unit . 51 B.3 Examples of Type B flue block shapes . 52 Annex C (normative)
Thermal resistance calculation method . 54 C.1 Thermal resistance of the individual element . 54 C.2 Thermal resistance of the chimney and of enclosures . 54 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 . 55 D.1 Acceptability determination . 55 D.2 Normal inspection . 55 D.3 Reduced to normal inspection . 58 D.4 Tightened inspection . 58 kSIST FprEN 1858:2016
FprEN 1858:2016 (E) 4 D.5 Tightened to normal inspection . 58 D.6 Discontinuation of inspection . 58 Annex E (informative)
Recommended test sequence . 59 Annex ZA (informative) Relationship of this European Standard with Regulation (EU) No.305/2011 . 60 Bibliography . 63
FprEN 1858:2016 (E) 5 European foreword This document (FprEN 1858:2016) has been prepared by Technical Committee CEN/TC 166 “Chimneys”, the secretariat of which is held by ASI. This document is currently submitted to the second Unique Acceptance Procedure. This document supersedes EN 1858:2008+A1:2011. 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 Regulation(s). For the relationship with the EU Regulation(s), see informative Annex ZA, which is an integral part of this document. The changes include the revision of Annex ZA in conformity with the CPR. This standard is one of a series of coordinated standards dealing with specification, design, testing and installation 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 European 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. kSIST FprEN 1858:2016
FprEN 1858:2016 (E) 6 1 Scope This European Standard specifies the materials, dimensional and performance requirements for precast concrete flue blocks as defined in Clause 3 for use in chimneys. The flue blocks may be of single wall or multi wall construction. The standard does not apply to flue blocks with back ventilation. This standard does not cover products designated wet (W) in conjunction with corrosion class 3. The standard also specifies a type of flue block to dimensionally coordinate with masonry unit coursing height, referred to as a type B flue block. This standard also applies to storey-height 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, Chimneys - General requirements EN 10088-2, Stainless steels - Part 2: Technical delivery conditions for sheet/plate and strip of corrosion resisting steels for general purposes 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 heating appliance EN 14297: 2004, Chimneys - Freeze-thaw resistance test method for chimney products EN ISO 7500-1:2015, Metallic materials - Calibration and verification of static uniaxial testing machines - Part 1: Tension/compression testing machines - Calibration and verification of the force-measuring system (ISO 7500-1:2015) ISO 2859-1:1999, 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 and the following apply. 3.1 flue block fitting element fitted to the flue block 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. kSIST FprEN 1858:2016
FprEN 1858:2016 (E) 7 3.3 manufacturer's declared internal transverse dimensions internal dimensions 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, e.g. spigot/socket end 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 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 kSIST FprEN 1858:2016
FprEN 1858:2016 (E) 8 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, aggregate and water and 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, modified] 3.14 precast concrete concrete that is cast in a place other than its final location of use 3.15 type B flue block bonding block having a co-ordinating height dimensionally co-ordinated with masonry unit coursing height (see Figure 2) Note 1 to entry: The type B flue block has the designation T250, N, D, 1, O xx (see Clause 9). 3.16 co-ordinating height height of the flue block plus an allowance for jointing so that the flue block will align and bond with one or more specified coursing heights in a brick or block wall (see Figure 2) 3.17 coursing height height between consecutive rows of building bricks or blocks 4 Materials 4.1 General The wall or walls of flue blocks shall be precast concrete. For multiwall flue blocks the liner and outer wall may be separated by an air space or insulation. Materials used in the manufacture of flue blocks shall be identified for factory production control purposes. When insulation forms part of a flue block, 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 flue block manufacturer’s installation instructions. The manufacturer shall declare the bulk density of the flue block and when tested to A.10 the density shall be within ± 10 % of the declared value (see 8.9). kSIST FprEN 1858:2016
FprEN 1858:2016 (E) 9 4.2 Reaction to fire In accordance with Commission Decision 96/603/EC, as amended, flue blocks to this standard are classified as reaction to fire class A1 without test provided they contain not more than a mass or volume fraction of 1 % (whichever is the more onerous) of homogeneously distributed organic materials. 5 Reinforcement for handling 5.1 Where a flue block 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. 5.2 In flue blocks having a bulk density of less than 2 000 kg/m3, when measured in accordance with Clause A.10, any reinforcement shall be protected against corrosion by one of the following means: a) use of stainless steel; 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). 6 Surface treatment Any surface treatment of the flue block e.g. render, shall be applied, as described by the product manufacturer, before the product is tested. 7 Form, dimensions and tolerances 7.1 Form 7.1.1 Single wall or multi-wall flue blocks shall be manufactured in one of the following forms: a) single flue; b) multi-flue; c) flue/ventilation combination. NOTE See Annex B for examples of typical flue block types. 7.1.2 Flue blocks shall have a maximum of four flues or ventilation passages. 7.2 Type B flue blocks 7.2.1 The co-ordinating height of Type B flue blocks shall be declared by the manufacturer. 7.2.2 When measured perpendicular to the axis of the flue for Type B flue blocks, the minimum dimensions of the flue shall be not less than 90 mm and the cross-sectional flue area shall be not less than 16 500 mm2. In transfer blocks the flue shall taper to a diameter of not less than 125 mm. 7.2.3 The bonding extension on a straight bonding Type B flue blocks shall not be less than 75 mm (see Clause B.3). kSIST FprEN 1858:2016
FprEN 1858:2016 (E) 10
Key 1 flue 2
flue block 3 masonry unit 4 flue block height 5 co-ordinating height 6 coursing height 7 jointing allowance Figure 2 — Type B flue blocks jointing with masonry units 7.2.4 The angle of offset in any Type B flue block shall not exceed 30° (see Clause B.3). 7.2.5 Starter Type B flue blocks shall have internal transverse dimensions not less than 305 mm side × 115 mm deep (see Clause B.3). 7.2.6 When jointed together in accordance with the manufacturer's installation instructions, the flue in adjacent Type B flue blocks shall align to within 3 mm. 7.3 Tolerances Tolerances on manufacturer's declared dimensions, including taper, shall be: a) Declared internal transverse dimensions below 300 mm: ± 3 mm 300 mm and above: ± 1,5 % b) Declared height below 300 mm: ± 5 mm kSIST FprEN 1858:2016
FprEN 1858:2016 (E) 11 300 mm to 700 mm: ± 7 mm above 700 mm: ± 10 mm c) Declared overall wall thickness below 10 mm: mm12+− 10 mm to 40 mm: mm51,5+− above 40 mm: % 125+− 7.4 Straightness 7.4.1 When tested as described in A.2, the limit deviation from straightness of a straight concrete flue block of manufacturers' declared height greater than 300 mm and less than 1000 mm shall not be greater than 1 % of the declared height. 7.4.2 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 manufacturers declared height. 7.5 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 flue blocks and fittings, 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 flue block shall subsequently meet the requirements of 8.4. In addition, flue blocks and fittings having a compressive strength less than 10 MPa, or having a temperature designation above T250 and/or designated soot fire resistant shall meet the requirements of 8.5. When a flue block 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 Flue block bends, made of the same material mix and by the same method of manufacture as the tested straight flue block shall be deemed to comply with the requirement in 8.1.1. 8.1.3 Flue block bends and fittings, made of a different material mix or using a different method of manufacture from those described in 8.1.2, shall be checked for heat stress resistance by testing a special straight test sample in accordance with 8.1.1. This straight test sample shall be made using the same material mix and manufacturing method as the bend or fitting. 8.1.4 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. kSIST FprEN 1858:2016
FprEN 1858:2016 (E) 12 8.2 Heat shock resistance 8.2.1 Following the heat stress resistance test in 8.1, when a flue block designated as soot fire resistant is tested as described in A.3 at a flue gas temperature of 1000 °C for a period of 30 min ± 1 min, the block shall subsequently meet the requirements of 8.4. In addition, flue blocks and fittings having a compressive strength less than 10 MPa, or having a temperature designation above T250 and/or designated soot fire resistant shall meet the requirements of 8.5. 8.2.2 Flue block bends made of the same material mix and by the same method of manufacture as the tested straight flue block, shall be deemed to comply with the requirement in 8.4. 8.2.3 Flue block bends and fittings, made of a different material mix or using a different method of manufacture from those described in 8.2.1, shall be checked for heat shock by testing a special straight test in accordance with 8.1.1. 8.2.4 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 1000 °C over a period of 30 min. Table 1 — Heat stress test temperature Temperature group Temperature of flue gas °C T 600 700 500+ T 450 550 500+ T 400 500 500+ T 300 350 350+ T 250 300 300+ T 200 250 250+ T 160 190 190+ T140 170 170+ T 120 150 150+ T 100 120 120+ T 080 100 100+ 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. kSIST FprEN 1858:2016
FprEN 1858:2016 (E) 13 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. 8.5 Abrasion resistance All flue blocks having satisfied the gas tightness requirements of 8.4, when tested as described in 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 kg/m3 Maximum abrasion of inner surface in 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 8.6 Compressive strength 8.6.1 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. NOTE The manufacturers' declared structural height can be derived from the ultimate compressive strength determined by the method in Clause A.11. Type B flue blocks shall be tested as a complete element and shall not be cut. 8.6.2 Flue block bends and fittings, made of the same material mix and by the same method of manufacture as the tested straight flue block, shall be deemed to comply with the requirement in 8.6.1. 8.6.3 Flue block bends and fittings, made of a different material mix or using a different method of manufacture from those described in 8.6.2, shall be checked for compressive strength by testing a special straight test sample in accordance with 8.6.1. The special straight test sample shall be made using the same material mix and manufacturing method as the bend or fitting. 8.7 Corrosion resistance When flue blocks designated condensate resistance class W (suitable for use in wet operating conditions) are tested as described in Clause A.8, flue blocks shall be designated corrosion class 1 or kSIST FprEN 1858:2016
FprEN 1858:2016 (E) 14 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 blocks designated condensate resistance class D (dry) and which meet the requirements of 8.1, 8.3, 8.5, and 8.6, may be assigned corrosion resistance class 3. 8.8 Condensate resistance When flue blocks designated W (for use in wet operating conditions) are tested as described in Clause A.8, the maximum amount of test solution passing through the wall of the flue block during any 20 24+h test period shall not be greater than 0,5 gh-1m-2 of the flue block external surface. 8.9 Bulk density When flue blocks are tested as described in Clause A.10, the lowest and highest bulk density value shall be within a limit deviation of ± 10 % of the manufacturers' declared bulk density for the block. 8.10 Flexural strength under wind loading The maximum free standing height of flue blocks shall be no greater than 4,5 times the least lateral overall external dimension of the flue block from the last point of lateral support (see Figure 3). Alternatively, the free standing part of the chimney above the last lateral support of the concrete flue block shall withstand a wind load of 1,5 kN/m2 (or a value in accordance with national regulations), when tested in accordance with A.9.
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 3 — Explanation of last point of support kSIST FprEN 1858:2016
FprEN 1858:2016 (E) 15 8.11 Flow resistance 8.11.1 Flow resistance of straight flue blocks The mean value of roughness for a straight flue block shall be determined either: a) by testing in accordance with EN 13216-1, or b) from data obtained from EN 13384-1. 8.11.2 Flow resistance of fittings The coefficient of flow resistance 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. 8.12 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. 8.13 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. 8.14 Dangerous substances National regulations on dangerous substances, other than those already covered in other clauses of this standard, may require verification and declaration on release, and sometimes content, when construction products covered by this standard are place on those markets. In the absence of European harmonized test methods, verification and declaration on release/content should be done taking into account national provisions in the place of use. NOTE An informative database covering European and national provisions on dangerous substances is available at the Construction website on EUROPA accessed through: http://ec.europa.eu/enterprise/construction/cpd-ds/. 9 Designation 9.1 General All concrete flue blocks conforming to this standard shall be designated in accordance with 9.2 to 9.6 for temperature, pressure, resistance to soot fire, condensate resistance and corrosion resistance respectively. NOTE An example of a designation system is given in Figure 4. kSIST FprEN 1858:2016
FprEN 1858:2016 (E) 16
The number of this standard Flue gas temperature class Negative/positive pressure class Resistance to condensate Corrosion resistance Resistance to fire [G(xx) or O(xx)] Figure 4 — Example of a designation system 9.2 Temperature class The temperature class shall be as given in Table 3. Table 3 — Temperature class Temperature class Nominal working temperature
°C T080
¶ 80 T100
¶ 100 T120
¶ 120 T140
¶ 140 T160
¶ 160 T200
¶ 200 T250
¶ 250 T300
¶ 300 T400
¶ 400 T450
¶ 450 T600
¶ 600 9.3 Pressure class The pressure class shall be as follows, with the corresponding test pressure and gas tightness level as given in Table 4. — for flue blocks suitable for negative pressure chimneys: N1, N2; — for flue blocks suitable for positive pressure chimneys: P1, P2; — for flue blocks suitable for high positive pressure chimneys: H1, H2. kSIST FprEN 1858:2016
FprEN 1858:2016 (E) 17 Table 4 — Pressure classes and gas tightness Pressure class Test pressure Pa Gas tightness – Maximum leakage rate l/s/m2 N1 40 2,0 N2 20 3,0 P1 200 0,006 P2 200 0,120 H1 5 000 0,006 H2 5 000 0,120 9.4 Resistance to condensate class The resistance to condensate class shall be as follows: — W for flue blocks for chimneys intended to operate under wet conditions; — D for flue blocks for chimneys intended to operate under dry conditions. 9.5 Corrosion resistance class Corrosion resistance classes for chimneys which convey products of combustion from gas or light oils and natural wood or heavy oils and solid mineral fuels shall be as given in Table 5 (see 8.7). Table 5 — Corrosion resistance classes Fuel Types 1 possible fuel types 2 possible fuel types 3 possible fuel types gas gas: sulphur-content
¶ 50 mg/m3 natural gas L + H gas natural gas L + H gas natural gas L + H liquid kerosene: sulphur-content
¶ 50 mg/m3 oil: sulphur-content
¶ 0,2 mass % kerosene: sulphur-content > 50 mg/m3 oil: sulphur-content > 0,2 mass % kerosene: sulphur-content > 50 mg/m3 wood
wood in open fire places wood in open fire places wood in closed stoves coal
Coal peat
Peat NOTE Table 5 does not categorize process gases or liquids. 9.6 Resistance to fire class Resistance to fire class shall be as follows: — O (xx) for flue blocks for chimneys without sootfire resistance; — G (xx) for flue blocks chimneys with sootfire resistance. kSIST FprEN 1858:2016
FprEN 1858:2016 (E) 18 10 Marking A minimum of 20 % of the flue blocks or fittings in each consignment shall be legibly and indelibly marked with the following information: a) the name or trademark of the manufacturer; b) the manufacturers batch or date code; c) the number of this European Standard; d) the designation in accordance with Clause 9; e) an arrow indicating direction of flue gas flow; f) identification of the flue in a flue/air duct combination block. 11 Product information The manufacturer's printed literature for the product shall include the following: a) the manufacturer's product description; b) manufacturer's declared sizes; c) the manufacturer's designation; d) distance to combustibles; e) maximum outer surface temperature; f) thermal resistance; g) manufacturer's declared internal transverse dimensions, height, structural height and overall wall thickness; h) detailed installation instructions including method of jointing and flue identification. 12 Assessment and verification of constancy of performance - AVCP 12.1 General The compliance of Chimneys - Concrete flue blocks with the requirements of this standard and with the performances declared by the manufacturer in the DoP shall be demonstrated by: — determination of the product type — factory production control by the manufacturer, including product assessment. The manufacturer shall always retain the overall control and shall have the necessary means to take responsibility for the conformity of the product with its declared performance(s). NOTE The assignment of tasks to the notified body(ies) and the manufacturer is shown in Annex ZA, Table ZA.3. kSIST FprEN 1858:2016
FprEN 1858:2016 (E) 19 12.2 Type testing 12.2.1 General All performances related to characteristics included in this standard shall be determined when the manufacturer intends to declare the respective performances unless the standard gives provisions for declaring them without performing tests. (e.g. use of previously existing data, CWFT and conventionally accepted performance). Assessment previously performed in accordance with the provisions of this standard, may be taken into account provided that they were made to the same or a more rigorous test method, under the same AVCP system on the same product or products of similar design, construction and functionality, such that the results are applicable to the product in question. For the purposes of assessment, the manufacturer's products may be grouped into families, where it is considered that the results for one or more characteristics from any one product within the family are representative for that same characteristics for all products within that same family Products may be grouped in different families for different characteristics. NOTE For the sampling for factory production control, see Annex D of this European Standard. In addition, the determination of the product type shall be performed for all characteristics included in the standard for which the manufacturer declares the performance: — at the beginning of the production of new or modified Chimneys - Concrete flue blocks (unless a member of the same product range), or — at the beginning of a new or modified method of production (where this may affect the stated properties); or — they shall be repeated for the appropriate characteristic(s), whenever a change occurs in the Chimneys - Concrete flue blocks design, in the raw material or in the supplier of the components, or in the method of production (subject to the definition of a family), which would affect significantly one or more of the characteristics. Where components are used whose characteristics have already been determined, by the component manufacturer, on the basis of assessment methods of other product standards, these characteristics need not be re-assessed. The specifications of these components shall be documented. Products bearing regulatory marking in accordance with appropriate harmonized European specifications may be presumed to have the performances declared in the DoP, although this does not replace the responsibility on the Chimneys - Concrete flue blocks manufacturer to ensure that the Chimneys - Concrete flue blocks as a whole is correctly manufactured and its component products have the declared performance values. 12.2.2 Test samples, testing and compliance criteria The number of samples of concrete flue blocks to be tested/assessed shall be in accordance with Table 6. The performance clauses relevant to Factory production control and Type testing are given in Table 7. Table 6 — Number of samples to be tested and compliance criteria for type testing and factory production control Characteristic Requirement Assessment method No. of samples Compliance criteria kSIST FprEN 1858:2016
FprEN 1858:2016 (E) 20 Materials
Bulk density Reaction to fire 4
4.1 4.2 Declared value
A.10 Declared value 1 block 200 mm diameter or equivalent geometric shape. 3 samples from 3 blocks. 1 block 200 mm diameter or equivalent geometric shape. Declared value Reinforcement for handling 5 Inspection measurement 1 block 200 mm diameter or equivalent geometric shape 5 Surface treatment 6 Inspection 1 block 200 mm diameter or equivalent geometric shape 6 Form and tolerance Straightness Squareness of ends 7.1, 7.2, 7.3
7.4 7.5 Inspection measurement A.2 A.1 1 block 200 mm diameter or equivalent geometric shape 7.1, 7.2, 7.3
7.4 7.5 Resistance to fire internal to external under normal operation conditions (O (xx)) 8.1 A3 Assembly of flue blocks > 2 m high of 200 mm diameter or equivalent geometric shape 8.4, and 8.5 for compressive strength < 10 MPa Resistance to fire internal to external under sootfire conditions (G (xx)), 8.2 A.3 Assembly of flue blocks > 2 m high of 200 mm diameter or equivalent geometric shape 8.4, and 8.5 for compressive strength < 10 MPa Thermal resistance 8.3 A.4 Assembly of flue blocks > 2 m high of 200 mm diameter or equivalent geometric shape Declared value Gas tightness 8.4 A.5 Assembly used for Resistance to fire 8.1 and 8.2 8.4 Abrasion resistance 8.5 A.6 Assembly used for Resistance to fire 8.1 and 8.2 8.5, 8.4 Compressive strength 8.6 A.7 1 block 200 mm diameter or equivalent geometric shape Declared value Corrosion resistance 8.7 A.8 Assembly used for Resistance to fire 8.1 and 8.2 8.7 Condensate resistance 8.8 A.8 Assembly used for Resistance to fire 8.1 and 8.2 8.8 Flexural strength under wind load 8.10 A.9 Assembly of flue blocks > 1 m high of three different geometrical sizes (small, medium, large) 8.10 Flow resistance of flue blocks 8.11 EN 13216–1 or EN 13384–1 As
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