EN 13502:2002

SLOVENSKI STANDARD
01-januar-2003
Dimniki - Zahteve in preskusne metode za glinene/keramične zaključke dimniških
tuljav
Chimneys - Requirements and test methods for clay/ceramic flue terminals
Abgasanlagen - Anforderungen und Prüfverfahren für Keramik-Aufsätze
Conduits de fumée - Terminaux en terre cuite/céramique - Prescriptions et méthodes
d'essai
Ta slovenski standard je istoveten z: EN 13502:2002
ICS:
91.060.40 Dimniki, jaški, kanali Chimneys, shafts, ducts
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD
EN 13502
NORME EUROPÉENNE
EUROPÄISCHE NORM
October 2002
ICS 91.060.40
English version
Chimneys - Requirements and test methods for clay/ceramic
flue terminals
Conduits de fumée - Terminaux en terre cuite/céramique - Abgasanlagen - Anforderungen und Prüfverfahren für
Prescriptions et méthodes d'essai Keramik-Aufsätze
This European Standard was approved by CEN on 31 August 2002.
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 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 Management Centre has the same status as the official
versions.
CEN members are the national standards bodies of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece,
Iceland, Ireland, Italy, Luxembourg, Malta, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre: rue de Stassart, 36  B-1050 Brussels
© 2002 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 13502:2002 E
worldwide for CEN national Members.

Contents
page
Foreword. 3
1 Scope . 4
2 Normative references . 4
3 Terms and Definitions . 4
4 Product shape. 6
5 Materials . 6
6 Tolerances on dimensions . 6
6.1 Size. 6
6.2 Height. 6
6.3 Squareness of base end of parallel sided flue terminals . 6
7 Acid resistance . 6
8 Freeze/ thaw resistance . 6
9 Flow resistance. 7
10 Aerodynamic behaviour. 7
10.1 General. 7
10.2 Ridge terminals. 7
10.3 Type 0 restricted flue terminals. 7
10.4 Type 1 restricted flue terminals. 7
10.4 Type 2 restricted flue terminals. 7
11 Evaluation of conformity. 7
11.1 Initial type testing . 7
11.2 Further type tests . 7
11.3 Factory production control. 8
12 Test methods . 8
12.1 Internal transverse dimensions. 8
12.2 Height. 8
12.3 Squareness of base end of parallel sided flue terminals . 9
12.4 Acid resistance . 9
12.5 Freeze/thaw . 11
12.6 Flow resistance. 12
12.7 Aerodynamic behaviour for Type 1 restricted flue terminals . 13
12.8 Aerodynamic behaviour for Type 2 restricted flue and ridge terminals . 13
13 Designation . 16
14 Marking . 17
Annex A (normative)  Sampling procedures for an AQL of 10 % and Inspection Level S2 . 18
Annex ZA (informative)  Clauses of this European standard addressing the provisions of
the EU Construction Products Directive. 22
Foreword
This document EN 13502:2002 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 an
identical text or by endorsement, at the latest by April 2003, and conflicting national standards shall be
withdrawn at the latest by July 2004.
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 Directive(s).
For relationship with EU directives, see informative annex ZA which is an integral part of this
document.
Annex A is normative.
According to the CEN/CENELEC Internal Regulations, the national standards organizations of the
following countries are bound to implement this European Standard: Austria, Belgium, Czech
Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Malta,
Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and the United Kingdom.
1 Scope
This European Standard specifies requirements and test methods for clay/ceramic flue terminals with
solid walls, which serve to convey the products of combustion from the flue to the atmosphere by
negative pressure. It includes terminals used on domestic and industrial chimneys which are not
structurally independent (free standing). This standard specifies the performance requirements for
factory made terminals. Marking and inspection are also covered by this standard.
2 Normative references
This European Standard incorporates by dated or undated reference, provisions from other
publications. These normative references are cited at the appropriate places in the text, and the
publications are listed hereafter. For dated references, subsequent amendments to or revisions of any
of these publications apply to this European Standard only when incorporated in it by amendment or
revision. For undated references the latest edition of the publication referred to applies (including
amendments).
EN 1443, Chimneys – General requirements.
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 European Standard, the terms and definitions given in EN 1443 and the
following apply.
3.1
nominal size (DN)
numerical designation of size of the base of flue terminals which is a convenient round number equal
to or approximately equal to either:
a) the internal diameter in millimetres of circular flue terminals;
b) the internal width in millimetres of square or octagonal flue terminals when measured between
opposite parallel sides;
c) the internal width and breadth in millimetres of the cross section of rectangular flue terminals.
3.2
nominal height
numerical designation of the height in millimetres of a flue terminal which is a convenient round
number approximately equal to the overall height of the flue terminal including any decoration
3.3
open-topped terminal
terminal designed for fitting directly to the outlet of an open flue system (see Figure 1) or covered
terminal with outlets twice the cross-sectional area of the outlet flue. The hydraulic diameter remains
constant throughout the height of the terminal
Figure 1 — Examples of open-topped flue terminals
3.4
ridge terminal
restricted terminal designed for fitting at the ridge of a building (see Figure 2).
NOTE Ridge terminals are used only with gas appliances.
Figure 2 — Example of ridge terminal
3.5
restricted flue terminal
terminal designed with outlets having a total opening area less than twice the cross-sectional area of
the outlet flue (see Figure 3)
Figure 3 — Examples of restricted flue terminals
4 Product shape
Flue terminals shall be parallel sided or tapered with outlets not specified but adequate to disperse
products of combustion and have a base end which shall be either:
a) circular in cross-section with or without parallel ends; or
b) square, rectangular or octagonal in cross-section with rounded internal and external corners and
with or without parallel ends.
5 Materials
Flue terminals shall be manufactured from suitable clay/ceramic material which when fired meet the
performance requirements given in this standard.
Flue terminals shall be unglazed or glazed on the interior and/or exterior. When glazed, they need not
be glazed on the jointing surfaces.
6 Tolerances on dimensions
6.1 Size
When tested in accordance with 12.1, the internal diameter of circular flue terminals measured on any
diameter shall not deviate by more than – 5 % of the manufacturer’s stated nominal internal diameter.
The internal length of a side of square, rectangular or octagonal section flue terminals shall not deviate
by more than – 5 % of the manufacturer’s stated nominal internal length of the side.
6.2 Height
When tested in accordance with 12.2, the height of flue terminals shall not deviate more than -2 %
+5 % of the manufacturer’s stated nominal height.
6.3 Squareness of base end of parallel sided flue terminals
When tested in accordance with 12.3, the permissible deviation from square of the base end of flue
terminals shall be not greater than an angle of slope 30 mm/m.
7 Acid resistance
When tested in accordance with 12.4, the mass loss from any test piece shall not exceed 5,0 %.
8 Freeze/ thaw resistance
The manufacturer shall declare the freeze-thaw resistance of his product expressed in terms of
lamination, cracking or flaking.
When tested in accordance with 12.5.2 (Spray test), a terminal shall pass the test if significant
lamination, cracking or flaking has not occurred.
9 Flow resistance
The manufacturer shall declare the flow resistance of his product expressed as flow resistance factor.
When tested in accordance with 12.6, a flue terminal shall have a flow resistance factor not greater
than the manufacturer’s declared flow resistance factor value.
10 Aerodynamic behaviour
10.1 General
The smallest dimension of any opening in a restricted flue terminal shall be greater than 10 mm.
10.2 Ridge terminals
When tested in accordance with 12.8 ridge terminals shall have a resistance factor, K, not greater than
15.
10.3 Type 0 restricted flue terminals
Type 0 restricted flue terminals shall not be tested for aerodynamic behaviour.
10.4 Type 1 restricted flue terminals
When tested in accordance with 12.7 with a wind pressure angles between +90º and –45º, Type 1
restricted flue terminals shall have a static pressure not greater than: -
DP = 0,2 x V x Pa
R w
where
DP is the manufacturer’s declared pressure difference in Pascals (Pa) between flue
R
terminal and the test room at an internal flow velocity of 2 m/s
V is the wind speed in metres per second (m/s)
w
For negative pressure chimneys the maximum value of
P shall be 2 Pa.
R
10.5 Type 2 restricted flue terminals
When tested in accordance with 12.8, Type 2 restricted flue terminals shall have a resistance factor, K,
not greater than 5.
11 Evaluation of conformity
11.1 Initial type testing
Type tests for the required characteristics given in Table 1 shall be performed at the beginning of the
production. One test shall be carried for each requirement.
11.2 Further type tests
Type tests shall be performed also when a change is made either in material composition, processing
technique or to the design or method of manufacture of the flue terminal (see Table 1).
NOTE These tests can be performed more frequently by incorporation into a plan for monitoring the
consistency of manufacture.
Table 1 — Factory production control and type tests
Relevant test clauses
Item Factory production control Type tests
11.3
11.1 and 11.2
Flue terminal 6.1, 6.2 and 6.3 7, 8, 9 and 10
NOTE  The tests carried out during FPC are intended to verify that the performance
requirements assessed through the initial type testing are maintained.
11.3 Factory production control
To achieve compliance with this standard the manufacturer shall establish and maintain an effective
documented quality system.
Factory production control tests are carried out following manufacture to monitor the quality of product
(see Table 1).
Sampling and testing of any batch shall be completed prior to removal from the factory and shall be in
accordance with ISO 2859-1 at an AQL of 10 % and inspection level S2. Isolated batches of units shall
be assessed in accordance with tightened inspection procedures, with a maximum batch size of 1 200
(see annex A).
Batches rejected under the factory production control procedure may be resubmitted once, after
removal of units with previously undetected visible defects, under the tightened inspection procedures,
in respect only of the defect that caused initial rejection.
12 Test methods
12.1 Internal transverse dimensions
The maximum and minimum diameters or width/breadth as appropriate of clay/ceramic flue terminals
shall be those calculated from the tolerances given in 6.1. If direct measurement is to be carried out,
take two measurements at the observed maximum and minimum internal transverse dimensions.
For circular section flue terminals, the test also may be carried out using two gauges whose diameters
are set at the minimum and maximum diameters. The minimum gauge shall be able to be turned
through 360° within the ends of the flue. The maximum gauge shall not be able to enter the flue when
tested through a rotation of 360°.
For square, rectangular and octagonal flue terminals, the internal cross-section dimensions shall be
measured between the mid-points of opposite sides of the flue terminals.
12.2 Height
The maximum and minimum internal height of a clay/ceramic flue terminal shall be those calculated
from the tolerances given in 6.2. If direct measurement is to be carried out, take two measurements at
the observed maximum and minimum heights.
The test also may be carried out by using two gauges whose heights are set at the minimum and
maximum internal heights. The minimum gauges shall be not able to fit over the internal height of the
flue terminal. The maximum gauge shall be able to fit over the internal height of the flue terminal.
12.3 Squareness of base end of parallel sided flue terminals
The test gauge as shown in Figure 4 with one arm set at a slope of 30 mm/m to the other shall be
provided with two pairs of supports at (50 – 5) mm centres. The end support shall be positioned so
that there is a recess of (30 – 5) mm from the inside of the angled arm. The slope of the supports shall
be such as to provide a clearance of at least 5 mm under the test gauge. The angled arm shall be of
such a length as to span the outside diameter/width of the flue terminal.
Place the gauge on the base of the flue terminal, at the line of the longest external measurement of
the flue terminal and where the terminal has parallel sides. Check the slope of the end against that of
the gauge.
Dimensions in millimetres
Longitudinal section of a gauge Cross section of gauge
Flue terminal passing test Flue terminal failing test
Figure 4 — Test gauge for squareness of ends test
12.4 Acid resistance
12.4.1 Test specimens
The test specimens shall be six freshly broken pieces of flue terminal or the inner wall of a flue
3 3 3 3
terminal with vertical perforations about [50 · 10 ] mm ± [10 · 10 ] mm in volume free from cracks or
shattered edges.
The thickness (E) of the test specimen shall be measured first (correct to ±1,0 mm).
The plan area of test specimen shall equal approximately mm
E
The length of side for a square sided specimen shall equal approximately mm
E
Example:-   Wall thickness of flue terminal = 12 mm
2 2
Plan area      mm = 4 167 mm
Length of side mm  = approximately 65 mm
12.4.2 Test equipment
12.4.2.1 Ventilated oven capable of maintaining a temperature of 110 °C ± 5 °C.
12.4.2.2 Balance with an accuracy of ± 0,01 g when loaded with 200 g.
12.4.2.3 Water boiling bath.
12.4.2.4 2 l beaker.
12.4.2.5 Supply of de-ionized water.
° 3
12.4.2.6 Sulfuric acid solution, c[H SO ] = 70 % by mass [density at 20 C =1,610 kg/m ].
2 4
12.4.2.7 Barium chloride drops [concentration 50 g/l].
12.4.3 Test procedure
Clean the test specimens in de-ionized water using a soft brush to remove any loose particles and dry
°
them at a temperature of (110 ± 5) C until no further loss of mass ± 0,01 g is noted on successive
weighings at 24 h intervals. Record the dry weight of the specimen in grams (M ).
Place the dried test specimens in a 2 l beaker and immerse for (6 ± 0,1) h in 1,5 l of sulfuric acid
solution. Cover the beaker by a watch glass to limit evaporation of the acid and stand the beaker in a
bath of gently boiling water.
On removal from the acid solution, place each specimen in a separate beaker and wash by immersion
in de-ionized water for 30 min, heat the water to boiling in 15 min and hold at boiling for a further
15 min.
Test for the presence of sulfate on a test-tube sample taken from the rinsing bath. Add several drops
of a barium chloride solution in de-ionized water at the rate of 50 g per litre.
Repeat the washing cycle, changing the rinsing water after each cycle, until the water no longer
becomes turbid when a few drops of barium chloride are added or a maximum of 100 washing cycles
(approximately 50 hrs of rinsing).
°
After washing, dry the test specimens at a temperature of (110 ± 5) C until no further loss of mass
± 0,01 g is noted on successive weighings at 24 h intervals. Record the final dry weight of the
specimen in grams (M ).
12.4.4 Expression of results
The loss of acid soluble matter in each of the test pieces shall be calculated as a percentage of the dry
mass as follows:
(M - M ).100
1 2
percentage loss in dry mass =
M
12.5 Freeze/thaw
12.5.1 Vacuum test ( alternative test method )
A test terminal shall be made using the same materials and methods of manufacture as the flue
terminal. It shall be not less than 150 mm high and of such a nominal size and wall thickness as to be
typical of the range of flue terminals produced.
Examine the test terminal prior to the test, and mark any defects which are already present.
Place the test terminal in an airtight box and evacuate to 300 mm – 10 mm of mercury, taking care to
place it in such a position as to permit gradual immersion during the next operation.
Maintain the vacuum for at least 2 h. Introduce water into the box by suction in such a way that
complete immersion of the terminal is obtained in about 30 min. Relax the vacuum and leave test
terminal immersed for 2 hrs – 15 min.
Subject the test terminal to the following sequence of freezing and thawing.
(a) Place the test terminal a tank filled with water which is itself located in the centre of a refrigerator
and cooled to a temperature of not greater than 5 °C.
(b) Draw out the water and continue the freezing until the test terminal reaches a temperature of
(-15 – 5) °C. During this stage the air in the surrounding refrigerator shall be agitated by fans.
(c) Introduce water into the tank at a temperature of (15 – 5) °C until the test terminal is completely
immersed. Keep the terminal for not less than 30 mi
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