1、BS EN 16475-7:2016Chimneys AccessoriesPart 7: Rain caps Requirements and testmethodsBSI Standards PublicationWB11885_BSI_StandardCovs_2013_AW.indd 1 15/05/2013 15:06BS EN 16475-7:2016 BRITISH STANDARDNational forewordThis British Standard is the UK implementation of EN 16475-7:2016.The UK participat
2、ion in its preparation was entrusted to TechnicalCommittee B/506/1, Chimneys general requirements.A list of organizations represented on this committee can beobtained on request to its secretary.This publication does not purport to include all the necessaryprovisions of a contract. Users are respons
3、ible for its correctapplication. The British Standards Institution 2016. Published by BSI StandardsLimited 2016ISBN 978 0 580 79614 2ICS 91.060.40Compliance with a British Standard cannot confer immunity fromlegal obligations.This British Standard was published under the authority of theStandards Po
4、licy and Strategy Committee on 31 May 2016.Amendments issued since publicationDate Text affectedBS EN 16475-7:2016EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 16475-7 January 2016 ICS 91.060.40 English Version Chimneys - Accessories - Part 7: Rain caps - Requirements and test methods Conduit
5、s de chemine - Accessoires - Partie 7: Chapeaux pare-pluie - Exigences et mthodes dessai Abgasanlagen - Zubehrteile - Teil 7: Regenhauben - Anforderungen und Prfmethoden This European Standard was approved by CEN on 27 November 2015. CEN members are bound to comply with the CEN/CENELEC Internal Regu
6、lations 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 memb
7、er. 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. C
8、EN 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,
9、 Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels 2016 CEN All rights of exploitation in
10、any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 16475-7:2016 EBS EN 16475-7:2016EN 16475-7:2016 (E) 2 Contents Page European foreword . 5 Introduction 6 1 Scope 7 2 Normative references 7 3 Terms and definitions . 7 4 Product characteristics . 8 4.1 General 8 4.2 D
11、imensions and tolerances . 8 4.3 Mechanical resistance and stability . 9 4.3.1 Compressive strength 9 4.3.2 Wind load . 9 4.3.3 Resistance to freezethaw . 9 4.4 Thermal performance . 9 4.4.1 Reaction to fire . 9 4.4.2 Fire resistance 9 4.5 Hygiene, health and environment 10 4.5.1 Corrosion resistanc
12、e . 10 4.5.2 Dangerous substances 10 4.6 Additional criteria for chimney operation 10 4.6.1 Cleaning of the chimney . 10 4.6.2 Rainwater ingress 10 4.6.3 Flow resistance of the rain cap 11 4.6.4 Ice formation 11 5 Testing, assessment and sampling methods 11 5.1 Mechanical resistance and stability 11
13、 5.1.1 General . 11 5.1.2 Compressive strength . 11 5.1.3 Wind load 12 5.2 Thermal performance 13 5.2.1 Test assembly 13 5.2.2 Test Procedure 14 5.3 Additional criteria for chimney operation 15 5.3.1 Rainwater ingress 15 5.3.2 Flow resistance of the rain cap 17 6 Assessment and Verification of the C
14、onstancy of Performance (AVCP) . 19 6.1 General . 19 6.2 Type testing 19 6.2.1 General . 19 6.2.2 Manufacturers declaration for type test . 20 6.2.3 Test samples, testing and compliance criteria 20 6.2.4 Sampling for type testing 20 6.2.5 Further type testing. 20 6.2.6 Test reports 21 BS EN 16475-7:
15、2016EN 16475-7:2016 (E) 3 6.2.7 Shared other party results 21 6.2.8 Cascading determination of the product type results . 21 6.3 Factory production control (FPC) . 23 6.3.1 General . 23 6.3.2 Sampling 23 6.4 Requirements . 23 6.4.1 General . 23 6.4.2 Equipment . 24 6.4.3 Raw materials and components
16、 24 6.4.4 Product specific requirements 26 6.4.5 Procedure for modifications . 27 7 Product information 27 7.1 Manufacturers instructions . 27 7.2 Minimum information to be included in the manufacturers instructions . 27 8 Classification and designation . 28 8.1 General . 28 8.2 Temperature classes
17、and test temperature 28 8.3 Corrosion resistance 29 8.4 Soot fire resistance . 29 9 Marking, labelling and packaging . 30 9.1 Rain cap 30 9.2 Packaging . 30 Annex A (informative) Deemed to satisfy information 31 Annex B (informative) Coefficients of flow resistance . 33 Annex C (normative) Choice of
18、 size for type test and sampling 34 C.1 General . 34 C.2 Fire resistance . 34 C.3 Mechanical resistance and stability . 34 C.4 Rainwater ingress . 34 C.5 Flow resistance 34 C.6 Resistance to freezethaw . 34 Annex D (informative) Example of sampling for factory production control 35 D.1 Sampling plan
19、s . 35 D.1.1 General . 35 D.1.2 Acceptable quality level (AQL) . 35 D.1.3 The inspection level . 35 D.1.4 Normal, tightened or reduce inspection 35 D.1.5 Single, double, multiple or sequential sampling . 35 D.1.6 Batch quantity 35 D.2 Inspection levels and procedures . 36 D.2.1 Incoming material 36
20、D.2.2 In-process inspection 36 BS EN 16475-7:2016EN 16475-7:2016 (E) 4 D.2.3 Volume and density checks 36 D.2.4 Finished goods checks 36 Annex E (normative) Method of measuring the hot gas temperature . 37 Annex ZA (informative) Relationship of this European Standard with Regulation (EU) No.305/2011
21、 38 ZA.1 Scope and relevant characteristics 38 ZA.2 System of Assessment and Verification of Constancy of Performance (AVCP) 38 ZA.3 Assignment of AVCP tasks . 38 Bibliography . 40 BS EN 16475-7:2016EN 16475-7:2016 (E) 5 European foreword This document (EN 16475-7:2016) has been prepared by Technica
22、l 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 July 2016, and conflicting national standards shall be withdrawn at the
23、latest by October 2017. 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 b
24、y the European Commission and the European Free Trade Association, and supports essential requirements of EU Directive(s). For relationship with EU Directive(s), see informative Annex ZA, which is an integral part of this document. According to the CEN/CENELEC Internal Regulations, the national stan
25、dards 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, L
26、uxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. BS EN 16475-7:2016EN 16475-7:2016 (E) 6 Introduction EN 16475-7 is a part of the series of standards for “Chimneys Accessories” and consists of: Part 1: Si
27、lencers Part 2: Chimney fans Part 3: Draught regulators, standstill opening devices and combined secondary air devices Part 4: Flue dampers Part 5: Explosion/implosion relief devices Part 6: Access components Part 7: Rain caps (this part) BS EN 16475-7:2016EN 16475-7:2016 (E) 7 1 Scope This European
28、 Standard specifies requirements and test methods for rain caps that are used as components, subject to flue gas, in order to protect against rain entry into the chimney flues. Rain caps which are part of components of a system chimney or other components of a chimney such as terminals, are not cove
29、red by this European Standard. It also specifies the requirements for marking, manufacturers instruction, product information and attestation and verification of constancy of performance (AVCP). NOTE Rain caps according to this standard are suitable for both dry and wet chimney applications. 2 Norma
30、tive 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)
31、applies. EN 206, Concrete Specification, performance, production and conformity EN 1443, Chimneys General requirements EN 1856-2:2009, Chimneys Requirements for metal chimneys Part 2: Metal flue liners and connecting flue pipes EN 1857, Chimneys Components Concrete flue liners EN 1858, Chimneys Comp
32、onents Concrete flue blocks EN 14297, Chimneys Freeze-thaw resistance test method for chimney products EN 14471:2013+A1:2015, Chimneys System chimneys with plastic flue liners Requirements and test methods 3 Terms and definitions For the purposes of this document, the terms and definitions given in
33、EN 1443 and the following apply. 3.1 rain cap product to protect against rain entry into the chimney flue 3.2 flow resistance of the rain cap additional pressure loss due to the flow of the flue gas passing the rain cap 3.3 nominal flue size numerical designation of flue size which the rain cap is p
34、rotecting against rain ingress, which is a convenient round number equal to or approximately equal to either the internal diameter in millimetres of circular flue liners, the internal width in millimetres of square flue liners or the internal width and breadth in millimetres of the cross section of
35、rectangular flue liners BS EN 16475-7:2016EN 16475-7:2016 (E) 8 3.4 rain cap size outer dimension or dimensions of the projected horizontal surface of the rain cap, expressed in millimetres 3.5 free area vertical dimension from the top of the flue outlet to the underside of the rain cap edge multipl
36、ied by the perimeter of the flue which the rain cap protects, reduced by the area of e.g. any support legs, bands, bird or spark guard mesh, expressed in square millimetres 4 Product characteristics 4.1 General Recommended minimum material specifications for rain caps are the following (see Annex A)
37、: a) Metal rain caps made of material quality 1.4401 with a wall thickness of the cap of at least 0,6 mm, at least three supports with a wall thickness of each at least 1,0 mm, method of fixings ww, wr, rr, b or st and a relation between dome/pyramid and height/size of at least 10 %. b) Metal rain c
38、aps made of material quality 1.4301 with a wall thickness of the cap of at least 0,6 mm, at least three supports with a wall thickness of each at least 1,0 mm, method of fixings ww, wr, rr, b or st and a relation between dome/pyramid and height/size of at least 10 %. c) Metal rain caps made of mater
39、ial quality EN AW 4047A with a wall thickness of the cap of at least 1,5 mm, at least three supports with a wall thickness of each at least 1,5 mm, method of fixings rr, b or st and a relation between dome/pyramid and height/size of at least 10 %, d) Concrete rain caps with a compressive strength of
40、 the concrete of at least C25/30 according to EN 206 (characteristic value 25 MPa on 150 300 cylinder), a relation between thickness and length of longest side of at least 20 % and fixings with tenon and mortise or similar assembly shape + mortar or jointing material. NOTE Method of fixing ww = doub
41、le weld, wr = weld and rivet, rr = double rivet, b = bolt and washer, st = single self-tapping screw. Metal: The material of a metal rain cap shall be in accordance with EN 1856-2. Concrete: The material of a concrete rain cap shall be in accordance with EN 1857 or EN 1858. Plastic: The material of
42、a plastic rain cap in contact with combustion products shall be in accordance with the chimney requirements of EN 14471 with the durability against UV (location class) LE. 4.2 Dimensions and tolerances The thickness of material of the individual components of the rain cap shall be not less than that
43、 declared by the manufacturer. BS EN 16475-7:2016EN 16475-7:2016 (E) 9 4.3 Mechanical resistance and stability 4.3.1 Compressive strength When tested in accordance with the test method described in 5.1.2, the rain cap shall withstand a load of 2,9 kN/m2 5 % of the outer dimension of the horizontal s
44、urface of the rain cap without reducing the original free area of the rain cap by more than 10 % after the test. NOTE 1 The value corresponds to the maximum snow load zone in accordance with EN 19911-3. Metal and concrete rain caps as described in 4.1 a) to d) are considered to meet the requirement.
45、 NOTE 2 Method of fixing ww = double weld, wr = weld and rivet, rr = double rivet, b = bolt and washer, st = single self-tapping screw. 4.3.2 Wind load When the rain cap is tested according to the test method described in 5.1.3, the rain cap shall not show a reduction of the original free area of th
46、e rain cap by more than 10 % after the test when a minimum horizontal traction load of 1,5 kN/m2of the laterally projected surface area is applied (see Figure 2 a), and when a vertical traction load of 0,75 kN/m2of the upward projected surface area is applied (see Figure 2 b). Metal and concrete rai
47、n caps as described in 4.1 a) to d) are considered to meet the requirement. 4.3.3 Resistance to freezethaw Rain caps shall be tested for their freezethaw resistance in accordance with EN 14297. Metal and plastic products are considered deemed to satisfy freezethaw resistance. 4.4 Thermal performance
48、 4.4.1 Reaction to fire For plastic materials the manufacturer shall declare the class of reaction to fire as defined in EN 14471:2013+A1:2015, 4.10, and test it in accordance with EN 14471:2013+A1:2015, 7.7.8. 4.4.2 Fire resistance 4.4.2.1 Heat stress When the rain cap is tested in accordance with
49、5.2.2.1, the rain cap shall not show a reduction of the original free area of the rain cap by more than 10 % after the test. Metal rain caps as described in 4.1 a) are deemed to satisfy the requirements of T600 and shall be designated as T600. Metal rain caps as described in 4.1 b) are deemed to satisfy the requirements of T300 and shall be designated as T300. Metal rain caps as described in 4.1 c) are deemed to satisfy the requirements of T200 and shall be designated as T200. Concrete rain caps as described in 4.1
