EN 1858:2003
(Main)Chimneys - Components - Concrete flue blocks
Chimneys - Components - Concrete flue blocks
This European Standard specifies the materials, dimensional and performance requirements for concrete flue blocks as defined in clause 3 for use in system chimneys. The flue blocks may be of single wall or multi wall construction. The standard does not apply to blocks with back ventilation.
The standard specifies a type of block to dimensionally co-ordinate with masonry unit coursing height, referred to as a type B (Bonding block).
The standard also relates to storey-height and reinforced flue blocks.
NOTE 1 Classes in this standard are not derived from conditions referred to in article 3.2 of Directive 89/106/EC, and should only be considered as technical classes in the sense of Commission Guidance Paper E 'Levels and classes in the Construction Products Directive'.
NOTE 2 Any reference to the term flue liners implies both flue liners and their fittings, except where otherwise indicated.
Abgasanlagen - Bauteile - Betonformblöcke
Diese Europäische Norm legt Werkstoffe, Maße und Leistungsanforderungen für Betonblöcke in Abgasanlagen, wie in Abschnitt 3 definiert, fest. Die Betonblöcke können einschalig oder mehrschalig sein. Diese Norm gilt nicht für Blöcke, die hinterlüftet sind.
Diese Norm beschreibt eine Blockart, die mit der Schichthöhe des Mauerwerks maßlich abgestimmt ist, und als Art B (Verbundblock) bezeichnet wird.
Diese Europäische Norm gilt auch für geschosshohe und bewehrte Betonblöcke.
ANMERKUNG 1 Die Klassenbildung in dieser Norm, ist nicht von den Bedingungen nach Artikel 3.2 der Richtlinie 89/106/EG abgeleitet und sollte nur als technische Klasse im Sinne des Leitpapiers E �Grenzwerte und Klassen in der Bauproduktenrichtlinie" verstanden werden.
ANMERKUNG 2 Der Begriff �Innenrohr" bedeutet in dieser Norm immer �Innenrohr und seine Verbindungsstücke", außer er ist ausdrücklich anders bezeichnet.
Conduits de fumée - Composants - Conduits de fumée simple et multiparois en béton
La présente Norme européenne spécifie les exigences relatives aux matériaux, dimensions et performances applicables aux conduits en béton tels que définis à l'Article 3 et constitutifs de systèmes de conduits de fumée. Les conduits peuvent être à simple paroi ou multiparois. La norme ne s'applique pas aux conduits de ventilation.
La norme spécifie un type de conduits permettant d'assurer une coordination dimensionnelle avec la hauteur d'assise du bloc de maçonnerie, ce conduit est dit de type B (conduit appareillé).
La norme s'applique également aux conduits hauteur d'étage et aux conduits armés.
NOTE 1 Les classes de cette norme ne constituent pas l'application des conditions mentionnées au paragraphe 3.2 de la Directive 89/106/EC et devraient seulement être considérées comme des classes techniques au sens du guide E de la commission « Niveau et classes dans la Directive Produits de Construction ».
NOTE 2 Toute référence au terme conduit implique l'ensemble des conduits et leurs accessoires, sauf si indication différente.
Dimniki – Sestavni deli – Betonski bloki za dimnike
General Information
Relations
Standards Content (Sample)
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Chimneys - Components - Concrete flue blocksDimniki – Sestavni deli – Betonski bloki za dimnikeConduits de fumée - Composants - Conduits de fumée simple et multiparois en bétonAbgasanlagen - Bauteile - Betonformblöcke91.100.30Beton in betonski izdelkiConcrete and concrete products91.060.40Dimniki, jaški, kanaliChimneys, shafts, ductsICS:SIST EN 1858:2003enTa slovenski standard je istoveten z:EN 1858:200301-december-2003SIST EN 1858:2003SLOVENSKI
STANDARD
EUROPEAN STANDARDNORME EUROPÉENNEEUROPÄISCHE NORMEN 1858July 2003ICS 91.060.40; 91.100.30English versionChimneys - Components - Concrete flue blocksConduits de fumée - Composants - Conduits de fuméesimple paroi en bétonAbgasanlagen - Bauteile - BetonformblöckeThis European Standard was approved by CEN on 2 December 2002.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 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 Management Centre has the same status as the officialversions.CEN members are the national standards bodies of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece,Hungary, Iceland, Ireland, Italy, Luxembourg, Malta, Netherlands, Norway, Portugal, Slovakia, Spain, Sweden, Switzerland and UnitedKingdom.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMITÉ EUROPÉEN DE NORMALISATIONEUROPÄISCHES KOMITEE FÜR NORMUNGManagement Centre: rue de Stassart, 36
B-1050 Brussels© 2003 CENAll rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN 1858:2003 E
EN 1858:2003 (E)2ContentsPageForeword.31Scope.42Normative references.43Terms and definitions.54Materials and designations of flue blocks.65Reinforcement.96Surface treatment.97Form, dimensions and tolerances.98Performance.119Designation.1510Marking.1711Product information.1712Evaluation of conformity.18Annex A (normative)
Test methods.19Annex B (informative)
Example of concrete flue block shapes.38Annex C (normative)
Thermal resistance calculation method.42Annex D (normative)
Requirements of sampling plan according to ISO 2859-1 at anAcceptable Quality Level (AQL) of 10% and inspection level S2.43Annex ZA (informative)
Clauses of this European standard addressing the provisions ofthe EU Construction Products Directive.48Bibliography.53
EN 1858:2003 (E)3ForewordThis document (EN 1858:2003) 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 anidentical text or by endorsement, at the latest by January 2004, and conflicting national standards shallbe withdrawn at the latest by April 2005.This document has been prepared under a mandate given to CEN by the European Commission andthe European Free Trade Association and supports essential requirements of EU Directives.For the relationship with the EU Directives, see informative Annex ZA, which is an integral part of thisstandard.This Standard is one of a series of co-ordinated standards dealing with specification, design, testing andinstallation of chimneys, both single and multi wall.The co-ordinated package of standards is further divided by material of construction and this EuropeanStandard is one of a series of specifications and execution documents dealing with design and installationof concrete chimney products and systems.The standards in this series for concrete chimney products and systems are:EN 1857, Chimneys - Components - Concrete flue linersEN 1858, Chimneys - Components - Concrete flue blocksEN 12446, Chimneys - Components - Concrete outer wall elementsIn this European Standard the Annexes A, B, D and ZA are informative (not forming part of the productspecification) and the Annex C is normative.According to the CEN/CENELEC Internal Regulations, the national standards organizations of thefollowing countries are bound to implement this European Standard: Austria, Belgium, CzechRepublic, Denmark, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Luxembourg,Malta, Netherlands, Norway, Portugal, Slovakia, Spain, Sweden, Switzerland and the United Kingdom.
EN 1858:2003 (E)41 ScopeThis European Standard specifies the materials, dimensional and performance requirements for concreteflue blocks as defined in clause 3 for use in system chimneys.
The flue blocks may be of single wall ormulti wall construction.
The standard does not apply to blocks with back ventilation.The standard specifies a type of block to dimensionally co-ordinate with masonry unit coursing height,referred to as a type B (Bonding block).This European standard also applies to storey-height and reinforced flue blocks.NOTE 1Classes in this standard are not derived from conditions referred to in article 3.2 of Directive 89/106/EC, andshould only be considered as technical classes in the sense of Commission Guidance Paper E ‘Levels and classes inthe Construction Products Directive’.NOTE 2Any reference to the term flue liners implies both flue liners and their fittings, except where otherwiseindicated.2 Normative referencesThis European Standard incorporates, by dated or undated reference, provisions from otherpublications. These normative references are cited at the appropriate places in the text and thepublications are listed hereafter. For dated references, subsequent amendments to or revisions of anyof these publications apply to this European standard only when incorporated in it by amendment orrevision. For undated references the latest edition of the publication referred to applies (includingamendments).EN 1443:2003, Chimneys - General requirementsEN 1859:2000, Chimneys— Metal chimneys — Test methodsEN 10088-2, Stainless steel Part 2 : Technical delivery conditions for sheet/plate and strip of corrosionresisting steels for general and construction purposesEN 10218-2, Steel wire and wire products - General Part 2 : Wire dimensions and tolerances.EN 13384-1 Chimneys – Thermal and fluid dynamic calculation methods – Part 1 : Chimneys
servingone appliance.’ISO 2859-1, Sampling procedures for inspection by attributes - Part 1 : Sampling schemes indexed byacceptance quality limit(AQL)for lot-by-lot inspection.EN ISO 7500-1 Metallic materials -- Verification of static uniaxial testing machines -- Part 1:Tension/compression testing machines. (ISO 7500-1:1999)
EN 1858:2003 (E)53 Terms and definitionsFor the purposes of this European Standard the terms and definitions given in EN 1443:2003 and thefollowing apply.3.1hollow wall flue blockflue block having vertical cavitiesNOTEcavities may pass through both ends of the block3.2manufacturer's declared internal transverse dimensionsinternal dimensions of the flue block measured perpendicular to the longitudinal axis3.3manufacturer's declared lengthinternal length of the flue blockNOTEExamples of measurement are shown in Figure 1LLa) with rebateb) with plain endKeyL
Internal lengthFigure 1 — Manufacturer's declared length3.4manufacturer's declared structural heightmaximum constructional height of the flue blocks as declared by the manufacturer3.5manufacturer's declared overall wall thicknessdimensions 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 end3.6multi wall flue blockflue block consisting of a flue liner and at least one additional wall3.7reinforced flue blockflue block having reinforcement to assist handling (not for structural stability)
EN 1858:2003 (E)63.8solid wall flue blockflue block without cavities in the thickness of its walls3.9straight flue blockflue block designed to be used in a vertical section of a chimney, without having any specialcharacteristics and having the ends perpendicular to the axis of the flue3.10storey-height flue blockfactory made flue block having an overall length relating to the floor to floor height of a building3.11transfer blockflue block designed to facilitate connection to another chimney product3.12concretematerial formed by mixing cement, aggregate and water and with or without the incorporation ofadmixtures or additions, which develops its properties by hydration of the cement[EN 206-1:2000]3.13precast concreteconcrete cast and used in a place other than the final location of use3.14resistance to fire of flue blocksability of the flue blocks and fittings to be resistant to soot fire3.15Type B (Bonding) blockflue block dimensionally co-ordinated with masonry unit coursing height4 Materials and designations of flue blocks4.1 Materials4.1.1The wall or walls of flue blocks shall be pre-cast concrete. For multiwall flue blocks the linerand 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.4.1.2When insulation forms part of a flue block, it shall be of bonded material as specified by themanufacturer. If the insulation is supplied as a separate item, it shall be installed according to the flueblock manufacturers installation instructions.4.1.3 The manufacturer shall declare the density of the insulation material used with the flue blockand when tested to A.9 the density shall be within ± 10 % of the declared value.NOTEAttention is drawn to Commission decision 96/603/EC, as amended, in which non-combustible masonryunits containing not more than a mass or volume fraction of 1% (whichever is the more onerous) ofhomogeneously distributed organic materials are classified as reaction to fire class A1 without testing.
EN 1858:2003 (E)74.2 Designations and classesFlue blocks shall be designated according to clause 9.Designation classes for flue blocks for temperature, pressure, resistance to soot fire, condensateresistance and corrosion resistance shall be according to 9.2 to 9.6Abbreviated designations for flue blocks, according to temperature, pressure, soot fire resistance, andcondensate resistance (wet or dry conditions) are given in Table 1.
EN 1858:2003 (E)8Table 1 —
Abbreviated designations for common types of concrete flue blocksTypeTemperaturePressureSootfireCondensate resistanceresistanceA1T600Negative N1Yes GDryA2T600Negative N2Yes GDryB1T450Negative N1Yes GDryB2T450Negative N2Yes GDryB3T450Negative N1No ODryC1T400Negative N1Yes GDryC2T400Negative N2Yes GDryC3T400Negative N1No ODryD1T300Negative N1No ODryD2T300Negative N1No OWet and DryD3T300Positive P1No OWet and DryE1T250Negative N1No ODryE2T250Negative N1No OWet and DryE3T250Positive P1No OWet and DryF1T200Negative N1No ODryF2T200Negative N1No OWet and DryG1T160Negative N1No OWet and DryG2T160Positive P1No OWet and DryH1T140Negative N1No OWet and DryH2T140Positive P1No OWet and DryJ1T120Negative N1No OWet and DryJ2T120Positive P1No OWet and DryK1T100Negative N1No OWet and DryK2T100Positive P1No OWet and DryL1T80Negative N1No OWet and DryL2T80Positive P1No OWet and DryNOTE
A designated class of flue block is suitable for use in a chimney
with
nominal workingtemperature up to a maximum of that designated. The designation for pressure, soot fireresistance, condensate resistance and corrosion apply throughout the temperature range.
EN 1858:2003 (E)95 Reinforcement5.1Where a flue block is reinforced the reinforcement shall have a maximum diameter of 8 mm anda minimum concrete cover of 20 mm on all sides.5.2In flue blocks having a bulk density of less than 2 000 kg/m3, when measured according toclause A.9, any reinforcement shall be protected against corrosion by one of the following means:a) use of stainless steel to EN 10088-2;b) by completely covering any mild steel reinforcement to EN 10218-2 with a coating.(e.g. typicallyPortland cement CEM 1 or CEM 2 mixed with water to form a slurry or epoxy resin).6 Surface treatment6.1Any surface treatment of the flue block e.g. coatings, shall be factory applied before the productis tested.6.2Any external surface treatment of the flue block e.g. render, shall be applied, as described bythe product manufacturer, before the product is tested.7 Form, dimensions and tolerances7.1 Form7.1.1Single 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.7.1.2Flue blocks shall have a maximum of four flues or ventilation passages.7.2 Type B flue block7.2.1Type B flue blocks shall comply with the requirements for flue blocks designated T250, N, 0,D1.7.2.2The co-ordinating height of Type B flue blocks shall be declared by the manufacturer.NOTEThe co-ordinating height is the height of the flue block plus an allowance for jointing so that the flueblock will align with one or more specified coursing heights in a brick or block wall. See Figure 2.7.2.3When measured perpendicular to the axis of the flue for Type B flue blocks the minimumdimensions of the flue shall be 90 mm and the cross-sectional flue area shall be not less than16 500 mm2. In transfer blocks the flue shall taper to a diameter of not less than 125 mm.7.2.4The bonding extension on a straight bonding Type B flue blocks shall not be less than 75 mm(see B.3).
EN 1858:2003 (E)104763215Key1
Flue2 Flue block3 Masonry unit4
Flue block height5
Co-ordinating height6
Coursing height7
Jointing allowanceFigure 2 — Type B flue blocks jointing with masonry units7.2.5The angle of offset in any Type B flue block shall not exceed 30° (see clause B.3).7.2.6Starter Type B flue blocks shall have internal transverse dimensions not less than305 mm side × 115 mm deep (see clause B.3).7.2.7When jointed together in accordance with the manufacturer's installation instructions, the fluein adjacent Type B flue blocks shall align to within 3 mm.7.3 TolerancesTolerances on manufacturer's declared dimensions, including taper, shall be:a)Declared internal transverse dimensionsbelow 300 mm:
± 3 mm300 mm and above:
± 1,5 %b)Declared lengthbelow 300 mm:
± 5 mm
EN 1858:2003 (E)11300 mm to 700 mm:
± 7 mmabove 700 mm:
± 10 mmc)Declared overall wall thicknessbelow 10 mm:
+ 2 mm
-
1 mm10 mm - 40 mm:
+ 5 mm
- 1,5 mmabove 40 mm:
+ 12 %
- 5 %7.4 Straightness7.4.1When tested as described in A.2 the limit deviation from straightness of a straight concreteflue block of manufacturers declared length greater than 300 mm and less than 1000 mm shall not begreater than 1 % of the declared length.7.4.2When tested as described in A.2 for flue blocks having a manufactured length equal to orgreater than 1 000 mm the limit deviation shall not be greater than 0,5 % of the manufacturersdeclared length.7.5 Squareness of endsWhen tested in accordance with either procedure described in A.1 shall not touch the upright for the firstprocedure and the dimension G shall not be greater than 5 mm for the second procedure.8 Performance8.1 Heat stress resistance8.1.1When flue blocks and fittings, including those designated soot fire resistant, are tested inaccordance with A.3 at the test temperature appropriate to the designation specified in Table 2, theflue block shall subsequently meet the requirements of 8.4. In addition, flue blocks and fittings havinga compressive strength less than 10 MPa, or having a temperature designation above T250 and/ordesignated 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 onthe flue with the highest designation and temperature.8.1.2Flue block bends, made of the same material mix and by the same method of manufacture asthe tested straight flue block shall be deemed to comply with the requirement in 8.1.1.8.1.3 For flue block bends and fittings, made of a different material mix or using a different methodof manufacture from those described in 8.1.2, shall be checked for heat stress resistance by testing aspecial straight test sample in accordance with 8.1.1. This straight test sample shall be made using thesame material mix and manufacturing method as the bend or fitting.8.1.4 The maximum temperature measured on the surface of adjacent combustible materials shallnot exceed 85°C when related to an ambient temperature of 20 °C. The distance to the a combustiblepartition wall with a thermal resistance of 0,4 m2K/W at 100 °C shall be declared. This distance shallbe determined in accordance with A.3 at a test temperature specified in Table 2 appropriate to theproduct designation.
EN 1858:2003 (E)12NOTEThis requirement is declared fulfilled when flue blocks, where combustibles are at least 50 mm from theouter wall and the spaces ventilated are tested in a free standing assembly at the test temperature given inTable 2 and the temperature of the outer wall does not exceed 100 °C at an ambient temperature of 20 °C.8.2 Heat shock resistance8.2.1Following the heat stress resistance test in 8.1, when a flue block designated as soot fireresistant 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 8.4.8.2.2 Flue block bends made of the same material mix and by the same method of manufacture asthe tested straight flue block shall be deemed to comply with the requirement in 8.4.8.2.3Flue block bends and fittings made of a different material mix or using a different method ofmanufacture from those described in 8.2.1 shall be checked for heat shock by testing a special straighttest in accordance with 8.1.1.8.2.4The maximum temperature measured on the surface of adjacent combustible materials shall notexceed 100 °C when related to an ambient temperature of 20 °C when the test assembly is tested at thetest temperature of 1 000 °C over a period of 30 min. The distance to the combustible partition with athermal resistance of 0,04 m2K/W shall be declared.NOTEThis requirement is declared fulfilled when flue blocks, where combustibles are at least 50 mm fromthe outer wall and the space ventilated are tested in a free standing assembly at the test temperature of 1 000 °Cover a period of 30 min the temperature of the outer wall does not exceed 140 °C at an ambient temperature of20 °C.Table 2 — Heat
stress test temperatureTemperature groupTemperature of flue gas°CT 600700 050+T450550 050+T 400500 050+T 300350 035+T250300 030+T 200250 025+T 160190 019+T140170 017+T 120150 015+T100120 012+T 080100 010+8.3 Thermal resistanceThermal resistance shall be measured according to the method given in A.4 or calculated according to themethod given in Annex C and the value obtained declared.
EN 1858:2003 (E)138.4 Gas tightnessWhen tested in accordance with A.5 the gas tightness expressed as a leakage rate of the flue block shallnot be greater than the values specified in Table 4 for the relevant gas tightness class.8.5 Abrasion resistanceAll flue blocks having satisfied the gas tightness requirements of 8.4, when tested as described in A.6 theweight of the deposit collected shall not exceed 0,03 kg/m2 of the total area of the inner surface of theblock, and shall subsequently meet the gas tightness requirements of 8.4.8.6 Compressive strength8.6.1The manufacturer shall declare the structural height. When tested as described in A.7, straightflue blocks and straight fittings shall withstand an intensity of loading equivalent to four times themanufacturer's declared structural height.NOTEThe manufacturers declared structural height can be derived from the ultimate compressive strengthdetermined by the method in clause A.10.Type B flue blocks shall be tested as a complete element and shall not be cut.8.6.2Flue block bends and fittings made of the same material mix and by the same method ofmanufacture as the tested straight flue block shall be deemed to comply with the requirement in 8.6.1.8.6.3Flue block bends and fittings made of a different material mix or using a different method ofmanufacture from those described in 8.6.2, shall be checked for compressive strength by testing aspecial straight test sample in accordance with 8.6.1.The special straight test sample shall be made using the same material mix and manufacturingmethod as the bend or fitting.8.7 Corrosion resistanceWhen flue blocks designated condensate resistance class W (suitable for use in wet operatingconditions) are tested as described in clause A.8 the weight loss of the test pieces shall not be greaterthan 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 resistanceWhen flue blocks designated W (for use in wet operating conditions)
are tested as described in clauseA.8 the maximum amount of test solution passing through the wall of the flue block during any 20 24+h testperiod shall not be greater than 0,5 g/h/m2 of the flue block external surface.8.9 Bulk densityWhen
flue blocks are tested as described in clause A.9 the lowest and highest bulk density value shall bewithin a limit deviation of ± 10 % of the manufacturers declared bulk density for the block.8.10 Flexural strength under wind loadingFlue blocks to this standard are not tested for stability under wind loading. The manufacturer shall declarethe maximum free standing height of flue blocks to this standard which shall be at least 4,5 times the leastlateral overall external dimension of the flue block from the last point of lateral support (see Figure 3).
EN 1858:2003 (E)14NOTEProcedures for assessing the stability under wind loading for masonry chimney structures are underdevelopment and will be introduced later.8.11 Flow resistance8.11.1 Flow resistance of flue blocksThe manufacturer shall declare the mean value of roughness for a flue block which shall bedetermined either:a) by testing in accordance with EN 1859orb) from data obtained from EN 13384-1.8.11.2 Flow resistance of fittingsThe manufacturer shall declare the coefficient of flow resistance due to a directional and/or crosssectional and/or mass flow change which shall be determined either:a) by testing in accordance with EN 1859orb) from data obtained from EN 13384-1.8.12 Freeze-thaw resistanceFreeze-thaw resistance shall be tested in those cases where the characteristic is necessary/relevantand there is a requirement for this in national (local) regulations. In the absence of a European methodthe manufacturer shall verify compliance with this requirement in accordance with national provisionsin the place of use of the flue blockNOTEA European test method for freeze-thaw is under development (prEN 14297).12214,54,5Key1Top of chimney excluding any terminal or chimney pot2Last point of supportFigure 3 — Explanation of last point of support
EN 1858:2003 (E)159 Designation9.1 GeneralAll concrete flue blocks to this standard shall be designated in accordance with 4.2, for which an exampleof a designation system is given as follows:EN 1858T 120P1W1O(20)The number of this standardFlue gas temperature classNegative/positive pressure classResistance to condensateCorrosion resistanceFire resistance (Sootfire resistance G(xx) or O(xx)9.2 Temperature classFor temperature class see Table 3.Table 3 — Temperature classTemperature classNominal working temperature°CT080£ 80T100£ 100T120£ 120T140£ 140T160£160T200£ 200T250£ 250T300£ 300T400£ 400T450£ 450T600£ 600
EN 1858:2003 (E)169.3 Pressure classFor pressure classes see Table 4. The pressure class is assigned a gas tightness level, expressed asa maximum leakage rate at a specified test pressure.¾ for flue blocks suitable for negative pressure chimneys: N1, N2;¾ for flue blocks suitable for positive pressure chimneys: P1, P2;¾ for flue blocks suitable for high positive pressure chimneys: H1, H2.Table 4 – Pressure classes and gas tightnessPressure classTest pressurePaGas tightness - Maximumleakage ratel/s/m2N1402,0N2203,0P12000,006P22000,120H150000,006H250000,1209.4 Sootfire resistance classSootfire resistance classes:¾ O (xx) for flue blocks for chimneys without sootfire resistance;¾ G (xx) for flue blocks chimneys with sootfire resistance.9.5 Resistance to condensate classResistance to condensate
classes:¾ W for flue blocks for chimneys intended to operate under wet conditions;¾ D for flue blocks for chimneys intended to operate under dry conditions.9.6 Corrosion resistance classCorrosion resistance classes for chimneys which convey products of combustion from gas or light oils andnatural wood or heavy oils and solid mineral fuels are given in Table 5.
EN 1858:2003 (E)17Table 5 — Corrosion resistance classesCorrosion from products ofcombustion according to fuelusedGasLight oils with sulphurcontent up to 0,2 % andnatural woodHeavy oils with sulphur contentover 0,2 % and solid mineral fuelsand peatCorrosion resistance class offlue block12310 MarkingA minimum of 20 % of the flue blocks or fittings in each consignment shall be legibly and indelibly markedwith 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 4.2;e) an arrow indicating direction of flue gas flow;f) identification of the flue in a flue/ventilation combination block.NOTEFor CE marking and labelling, clause ZA.3 applies.11 Product informationThe 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) thermal resistance;f) manufacturer's declared structural height;g) detailed installation instructions including method of jointing and flue identification.NOTEFor CE marking requirements for information on the product, clause ZA.3 applies.
EN 1858:2003 (E)1812 Evaluation of conformity12.1 Initial type testingType test relating to material composition shall be performed initially together with factory productioncontrol tests as given in Table 6. One test shall be carried out for each requirement.The thermal testing shall be carried out on one size of flue block for each geometrical configuration,e.g. circular, square, rectangular. For circular flue blocks, the size to be tested shall be 200 mm
±50 mm internal diameter. For other geometrical configurations, the flue liner shall have an equivalentcross-sectional area range.12.2 Further type testsType tests shall be performed when a change is made either in material composition, processingtechnique or to the design or method of manufacture of the flue block, but they may be performedmore frequently by incorporation into a plan for monitoring the consistency of manufacture (seeTable 6).Table 6 — Factory production control and type testsRelevant requirement clausesItemFactory production control12.3 aType tests12.1 and 12.2Flue blocks and fittings4; 5; 6; 7.3, 7.4; 7.5; 8.4; 8.6;8.98.1; 8.2; 8.3; 8.4; 8.5; 8.6; 8.7;8.8; 8.10; 8.11; 8.12a The tests carried out during FPC are intended to verify that the performancerequirements assessed through the initial type testing are main
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