SIST EN 16475-6:2020

SLOVENSKI STANDARD
SIST EN 16475-6:2020
01-junij-2020
Dimovodne naprave - Oprema - 6. del: Čistilne odprtine - Zahteve in preskusne
metode
Chimneys - Accessories - Part 6: Access components - Requirements and test methods
Abgasanlagen - Zubehörteile - Teil 6: Zugangsbauteile - Anforderungen und
Prüfverfahren
Conduits de cheminée - Accessoires - Partie 6 : Éléments d'accès - Exigences et
méthodes d'essai
Ta slovenski standard je istoveten z: EN 16475-6:2020
ICS:
91.060.40 Dimniki, jaški, kanali Chimneys, shafts, ducts
SIST EN 16475-6:2020 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

---------------------- Page: 1 ----------------------
SIST EN 16475-6:2020

---------------------- Page: 2 ----------------------
SIST EN 16475-6:2020


EN 16475-6
EUROPEAN STANDARD

NORME EUROPÉENNE

April 2020
EUROPÄISCHE NORM
ICS 91.060.40
English Version

Chimneys - Accessories - Part 6: Access components -
Requirements and test methods
Conduits de cheminée - Accessoires - Partie 6 : Abgasanlagen - Zubehörteile - Teil 6: Zugangsbauteile -
Éléments d'accès - Exigences et méthodes d'essai Anforderungen und Prüfverfahren
This European Standard was approved by CEN on 25 December 2019.

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, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway,
Poland, Portugal, Republic of North Macedonia, Romania, Serbia, 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: Rue de la Science 23, B-1040 Brussels
© 2020 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 16475-6:2020 E
worldwide for CEN national Members.

---------------------- Page: 3 ----------------------
SIST EN 16475-6:2020
EN 16475-6:2020 (E)
Contents Page
European foreword . 4
Introduction . 5
1 Scope . 5
2 Normative references . 5
3 Terms and definitions . 6
4 Product characteristics . 6
4.1 General . 6
4.2 Mechanical resistance and stability . 6
4.2.1 Freedom of movement of the door . 6
4.2.2 Impact resistance of the door . 6
4.2.3 Inner door security . 6
4.3 Thermal performance . 6
4.3.1 Reaction to fire . 6
4.3.2 Resistance to fire (internal to external) . 7
4.4 Hygiene, health and environment . 7
4.4.1 Gas tightness . 7
4.4.2 Condensate resistance . 7
4.4.3 Corrosion resistance . 7
4.4.4 Dangerous substances . 8
4.5 Thermal resistance . 8
4.6 Materials . 8
4.6.1 Access components in contact with combustion products . 8
4.6.2 Additional information on other materials of construction . 8
4.6.3 Freeze/thaw resistance . 8
4.7 Operational requirements . 9
4.7.1 Handling . 9
4.7.2 Angle of opening . 9
4.7.3 Closing mechanism . 9
4.7.4 Space for additional information . 9
5 Testing, assessment and sampling methods . 9
5.1 Manufacturer's declaration for type test . 9
5.2 Mechanical resistance and stability . 9
5.2.1 Free movement test . 9
5.2.2 Swing ball test . 10
5.3 Thermal performance tests . 12
5.3.1 General . 12
5.3.2 Test Assembly . 12
5.3.3 Test procedure . 14
5.4 Gas tightness . 14
5.4.1 Test assembly . 14
5.4.2 Test Procedure . 15
5.4.3 Test results . 15
5.5 Test sequence . 15
6 Assessment and verification of constancy of performance – AVCP. 15
2

---------------------- Page: 4 ----------------------
SIST EN 16475-6:2020
EN 16475-6:2020 (E)
6.1 General . 15
6.2 Type testing . 16
6.2.1 General . 16
6.2.2 Test samples, testing and compliance criteria . 16
6.2.3 Test reports . 17
6.2.4 Shared other party results . 17
6.2.5 Cascading determination of the product type results . 18
6.3 Factory production control (FPC) . 19
6.3.1 General . 19
6.3.2 Requirements . 20
6.3.3 Product specific requirements . 22
6.3.4 Initial inspection of factory and of FPC . 22
6.3.5 Continuous surveillance of FPC . 23
6.3.6 Procedure for modifications . 23
6.3.7 One-off components, pre-production products (e.g. prototypes) and components
produced in very low quantity . 23
7 Classification and designation . 24
7.1 General . 24
7.2 Temperature classes and test temperature . 25
7.3 Gas tightness class . 25
7.4 Condensate resistance class . 25
7.5 Corrosion resistance. 25
7.6 Soot fire resistance and distance to combustible material . 25
8 Marking, labelling and packaging . 25
8.1 Access component . 25
8.2 Packaging . 26
8.3 Product information – Manufacturer’s instructions . 26
Annex A (normative) Choice of size for type test and sampling . 27
Annex B (normative) Sampling for factory productions control . 28
B.1 Sampling plans . 28
B.2 Inspection levels and procedures . 28
Annex C (normative) Factory production control . 30
C.1 General . 30
C.2 Materials, including coatings . 30
C.3 Seals and sealants . 30
C.4 Manufacturing checks . 30
Annex D (informative) Recommended test sequence . 31
Annex E (informative) Calculation of thermal resistance . 32
Bibliography . 33

3

---------------------- Page: 5 ----------------------
SIST EN 16475-6:2020
EN 16475-6:2020 (E)
European foreword
This document (EN 16475-6:2020) 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 October 2020, and conflicting national standards shall
be withdrawn at the latest by January 2022.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CEN shall not be held responsible for identifying any or all such patent rights.
This document is a part of the EN 16475 standards series, Chimneys – Accessories:
— Part 1: Chimney silencers - Requirements and test methods [FprEN 16475-1];
— Part 2: Chimney fans - Requirements and test methods;
— Part 3: Draught regulators, standstill opening devices and combined secondary air devices -
Requirements and test methods;
— Part 4: Flue dampers - Requirements and test methods [prEN 16475-4];
— Part 6: Access components - Requirements and test methods (this document);
— Part 7: Rain caps - Requirements and test methods.
According to the CEN-CENELEC Internal Regulations, the national standards organisations of the
following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria,
Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland,
Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Republic of
North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the
United Kingdom.
4

---------------------- Page: 6 ----------------------
SIST EN 16475-6:2020
EN 16475-6:2020 (E)
Introduction
The main purpose of access components is to provide access to the flue of dry, negative pressure
chimneys, e.g. to be inspected or cleaned.
1 Scope
This document specifies the requirements and test methods for access components comprising a frame
and a door or doors which provide access to the flue of a chimney for the purpose of inspection or
cleaning.
Access components for higher nominal working temperature than 450 °C, positive pressure and wet
applications are not covered by this standard.
The document is limited to access components with door opening dimensions with a maximum width of
450 mm and a maximum height of 600 mm.
Products not freely ventilated are excluded from this document.
This document also specifies the requirements for marking, manufacturers’ instruction, product
information and information on the AVCP (Assessment and Verification of Constancy of Performance).
Access components already tested together with system chimney products or other chimney
components, e.g. flue liners, are not covered by this document.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements of this document. 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 1561, Founding - Grey cast irons
EN 1563, Founding - Spheroidal graphite cast irons
EN 1856-1, Chimneys - Requirements for metal chimneys - Part 1: System chimney products
EN 1857, Chimneys - Components - Concrete flue liners
EN 10088-1, Stainless steels - Part 1: List of stainless steels
EN 10131, Cold rolled uncoated and zinc or zinc-nickel electrolytically coated low carbon and high yield
strength steel flat products for cold forming - Tolerances on dimensions and shape
EN 13063-1, Chimneys - System chimneys with clay/ceramic flue liners – Part 1: Requirements and test
methods for sootfire resistance
EN 13216-1, Chimneys - Test methods for system chimneys - Part 1: General test methods
EN 13501-1, Fire classification of construction products and building elements – Part 1: Classification
using data from reaction to fire tests
EN 14297, Chimneys - Freeze-thaw resistance test method for chimney products
5

---------------------- Page: 7 ----------------------
SIST EN 16475-6:2020
EN 16475-6:2020 (E)
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, EN 1856-1 and EN 1857,
and the following apply.
ISO and IEC maintain terminological databases for use in standardization at the following addresses:
• IEC Electropedia: available at http://www.electropedia.org/
• ISO Online browsing platform: available at http://www.iso.org/obp
3.1
access component
component comprising a frame and a door or doors installed in the chimney to provide access to the
flue for the purpose of inspection or cleaning
3.2
nominal dimension
dimension of the opening of the access component
4 Product characteristics
4.1 General
The access component shall fulfil the following requirements.
4.2 Mechanical resistance and stability
4.2.1 Freedom of movement of the door
When tested according to 5.2.1 the access component shall be able to move freely when opened and
closed 100 times before and 10 times after the thermal performance tests, and meet the requirement of
4.4.1.
4.2.2 Impact resistance of the door
When tested according to 5.2.2 the access component shall also be able to be opened and closed freely
before and after the thermal tests.
4.2.3 Inner door security
An access component with a separate inner door shall have means for preventing the inner door from
falling into the chimney. This criteria is fulfilled if the inner door is secured, e.g. to the access component
frame by a steel rope, or a bar.
4.3 Thermal performance
4.3.1 Reaction to fire
The reaction to fire for the access component shall be determined in accordance with EN 13501-1.
6

---------------------- Page: 8 ----------------------
SIST EN 16475-6:2020
EN 16475-6:2020 (E)
4.3.2 Resistance to fire (internal to external)
4.3.2.1 General
The minimum distance to combustible shall be declared from the front face of the access component
(distance xx in Figure 2) and to the side of an access component (distance yy in Figure 2) either
measured according to 5.3 or for freely ventilated access components as:
— xx ≥ 400 mm and yy ≥ 200 mm for chimneys designated “G”; or
— xx ≥ 200 mm and yy ≥ 100 mm for chimneys designated “O”; or
— xx ≥ 50 mm and yy ≥ 50 mm for chimneys designated ‘O’ and maximum T160.
The minimum distance to combustible material may be reduced to 50 % of the above values if a
radiation shield creating an air gap, made from non-combustible material, is installed between the
access component and the adjacent combustible materials.
NOTE The minimum distance to combustible materials only takes into account the fire protection and not
e.g. operational requirements.
Freely ventilated means that ventilation of the space around the access component is not enclosed by,
e.g. fitting it in a cupboard.
If tested according to 5.3 the temperature on the combustible material shall not exceed 85 °C during the
heat stress test and shall not exceed 100 °C during the sootfire test.
A multiple layer access component may only be designated G if the outer surface temperature does not
change by more than 10 % when the heat stress test is repeated after the sootfire test.
4.3.2.2 Heat stress
The access component shall be tested to the designated nominal working temperature in accordance
with 5.3.3.2 and the requirements of 4.2 and 4.4 shall be met.
4.3.2.3 Sootfire
The access component designated sootfire resistant shall be tested in accordance with 5.3.3.3 and the
requirements of 4.2 and 4.4 shall be met.
4.4 Hygiene, health and environment
4.4.1 Gas tightness
When an access component is tested according to the test method described in 5.4 both before and after
-1. −1
the thermal performance tests, the leakage rate shall not be greater than 1,5 l·s m of joint length at a
test pressure of 40 Pa and shall be measured on the largest door size in a manufacturer’s range suitable
for a chimney of 200 mm diameter or equivalent area.
NOTE The parameter N1 or N of the chimney is not changed by the installation of such an access component.
2
4.4.2 Condensate resistance
Access components to this standard shall be designated ‘Dry’.
4.4.3 Corrosion resistance
Access components having materials to this standard (see 4.6.1) shall be designated with the corrosion
class 3 in accordance with EN 1443.
7

---------------------- Page: 9 ----------------------
SIST EN 16475-6:2020
EN 16475-6:2020 (E)
4.4.4 Dangerous substances
National regulations on dangerous substances may require verification and declaration on release, and
sometimes content, when construction products covered by this standard are placed 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/.
4.5 Thermal resistance
2
The outer door of the access component shall have a minimum thermal resistance of 0,05 m · K/W.
This is deemed to be fulfilled for concrete with a wall thickness of 60 mm and for metal with insulation
(of maximum thermal conductivity of 0,1 W/(mK) of at least 10 mm thickness.
The thermal resistance of an access component may be calculated using the method in Annex E.
4.6 Materials
4.6.1 Access components in contact with combustion products
The part of the access component, multi-layer or not, in contact with the products of combustion shall
have a minimum material specification of one of the following:
a) cast iron to EN 1561 or EN 1563: minimum thickness 4 mm;
b) zinc coated mild steels to EN 10131: minimum thickness 1,25 mm;
1
c) stainless steel: minimum material number according to EN 10088-1 of 1.4301 or higher number ,
minimum thickness 0,6 mm;
3
d) concrete: minimum density 1 700 kg/m , thickness shall be selected to correspond to a maximum
overall weight of 6,5 kg;
e) clay as specified in EN 13063-1.
4.6.2 Additional information on other materials of construction
Other materials used in access components shall not show any deformation, permanent or temporary,
when the relevant material of the access component is tested in accordance with 5.3 that will affect the
performance of the access component.
4.6.3 Freeze/thaw resistance
Access components of metal construction are deemed to be freeze/thaw resistant.
Access components of concrete material are deemed to be freeze/thaw resistant when they satisfied the
requirements in accordance with EN 14297.

1
A stainless material type of a higher number means any steel according to the material list of EN 1856-2.
8

---------------------- Page: 10 ----------------------
SIST EN 16475-6:2020
EN 16475-6:2020 (E)
4.7 Operational requirements
4.7.1 Handling
An access component shall have a facility to handle the openable part.
The access component shall have no sharp edges that can cause injury when handled, or damage
cleaning or inspection tools.
4.7.2 Angle of opening
A hinged door shall open at least to an angle of 140°, or be removable.
4.7.3 Closing mechanism
A door shall have the operating part of the closing mechanism consisting of either:
— a square spigot of (7 ± 0,1) mm x (7 ± 0,1) mm cross-section, with a length of at least 6,5 mm
operating a latch mechanism;
— in a 18 mm diameter circular recess, at least 6,5 mm deep;
— a lever operating a latch mechanism;
— close under its own weight e.g. for concrete access doors, by fitting into a recess.
4.7.4 Space for additional information
If it is required, the door of the access component shall have a space of 80 mm x 170 mm for additional
information to be added in particular where an access component needs additional information, e.g. in
terms of which chimney it serves in a property in a multiple apartment block.
5 Testing, assessment and sampling methods
5.1 Manufacturer's declaration for type test
The manufacturer shall provide the relevant information in Clause 8 and, in addition, shall declare, for
the access component:
a) drawings including declared nominal dimensions,
b) Material types for the component parts, and their minimum thicknesses,
c) weight of product,
d) method of fixing.
5.2 Mechanical resistance and stability
5.2.1 Free movement test
5.2.1.1 Test assembly
Mount the access component on the test assembly of 5.2.2.1 according to the manufacturer’s
instructions.
9

---------------------- Page: 11 ----------------------
SIST EN 16475-6:2020
EN 16475-6:2020 (E)
5.2.1.2 Test procedure
Check if a hinged door opens to a minimum angle of 140°.
Subject the access component to the gas tightness test of 5.4.
Open and close the access component door 100 times.
Record whether the door opens and closes freely and record whether the hinged door opens to a
minimum angle of 140°.Subject the access component to the thermal test of 5.3 appropriate to the
access component designation.
Open and close the access component door 10 times.
Record whether the door opens and closes freely and record whether the hinged door opens to a
minimum angle of 140°.
Subject the access component to the gas tightness test of 5.4.
5.2.1.3 Test Results
Record whether the access component door opens and closes freely, and the leakage from the gas
tightness test.
5.2.2 Swing
...