SIST EN 483:2001/A4:2008
Gas fired central heating boilers - Type C boilers of nominal heat input not exceeding 70 kW
Gas fired central heating boilers - Type C boilers of nominal heat input not exceeding 70 kW
Delete the footnote no.1.
Heizkessel für gasförmige Brennstoffe - Heizkessel des Typs C mit einer Nennwärmebelastung gleich oder kleiner als 70 kW
Die Fußnote Nr. 1 ist zu streichen.
Chaudieres de chauffage central utilisant les combustibles gazeux - Chaudieres des types C dont le débit calorifique nominal est inférieur ou égal a 70 kW
Supprimer la note de bas de page n°1.
Plinski kotli za centralno gretje - Tip kotlov C z imensko močjo do vključno 70 kW - Dopolnilo A4
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
SIST EN 483:2001/A4:2008
01-marec-2008
3OLQVNLNRWOL]DFHQWUDOQRJUHWMH7LSNRWORY&]LPHQVNRPRþMRGRYNOMXþQRN:
'RSROQLOR$
Gas fired central heating boilers - Type C boilers of nominal heat input not exceeding 70
kW
Heizkessel für gasförmige Brennstoffe - Heizkessel des Typs C mit einer
Nennwärmebelastung gleich oder kleiner als 70 kW
Chaudieres de chauffage central utilisant les combustibles gazeux - Chaudieres des
types C dont le débit calorifique nominal est inférieur ou égal a 70 kW
Ta slovenski standard je istoveten z: EN 483:1999/A4:2007
ICS:
91.140.10 Sistemi centralnega Central heating systems
ogrevanja
97.100.20 Plinski grelniki Gas heaters
SIST EN 483:2001/A4:2008 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
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SIST EN 483:2001/A4:2008
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SIST EN 483:2001/A4:2008
EUROPEAN STANDARD
EN 483:1999/A4
NORME EUROPÉENNE
EUROPÄISCHE NORM
December 2007
ICS 91.140.10
English Version
Gas fired central heating boilers - Type C boilers of nominal heat
input not exceeding 70 kW
Chaudières de chauffage central utilisant les combustibles Heizkessel für gasförmige Brennstoffe - Heizkessel des
gazeux - Chaudières des types C dont le débit calorifique Typs C mit einer Nennwärmebelastung gleich oder kleiner
nominal est inférieur ou égal à 70 kW als 70 kW
This amendment A4 modifies the European Standard EN 483:1999; it was approved by CEN on 2 November 2007.
CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for inclusion of this
amendment into the relevant national standard without any alteration. Up-to-date lists and bibliographical references concerning such
national standards may be obtained on application to the CEN Management Centre or to any CEN member.
This amendment 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 Management Centre has the same status as the official
versions.
CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland,
France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal,
Romania, Slovakia, Slovenia, 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
© 2007 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 483:1999/A4:2007: E
worldwide for CEN national Members.
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SIST EN 483:2001/A4:2008
EN 483:1999/A4:2007 (E)
Contents Page
Foreword.3
1 Modification to the scope .4
2 Modification to Clause 2 “Normative references”.4
3 Modification to Clause 3 “Terms and definitions” .5
5 Modification to Clause 5 “Constructional requirements” .5
6 Modification to Clause 6 “Operational requirements”.6
7 Modification to Clause 7 “Test methods” .13
8 Modification t o subclause 8.2 “Instructions” .20
Annex R .23
Annex S.24
Bibliography .25
2
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SIST EN 483:2001/A4:2008
EN 483:1999/A4:2007 (E)
Foreword
This document (EN 483:1999/A4:2007) has been prepared by the Technical Committee CEN/TC 109 "Central
heating boilers using gaseous fuels", the secretariat of which is held by NEN.
This Amendment to the European Standard EN 483:1999 shall be given the status of a national standard,
either by publication of an identical text or by endorsement, at the latest by June 2008, and conflicting national
standards shall be withdrawn at the latest by June 2008.
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).
As shown in informative Annex S of this amendment the following essential requirements mentioned in
mandate M105 are already covered by the essential requirements of the GAD.
— Fire resistance – integrity (I);
— Gas tightness/leakage;
— Flow resistance;
— Dimensioning;
— Flexural tensile strength;
— Compressive strength;
— Durability of tightness/leakage against chemicals/corrosion;
— Durability of flexural tensile strength against chemicals;
— Durability of compressive strength against chemicals
— Fire Reaction.
To fulfil the Gas Appliance Directive this standard contains normative paragraphs specifying requirements for
combustion air supply and combustion products evacuation ducts, which are part of an appliance.
This Amendment has been prepared to amplify the requirements and test methods for air supply and
combustion products evacuation duct designed by the boiler manufacturer and marketed as an integral part of
the boiler to support the EU Directive 89/106/EEC on construction products.
Additionally, this Amendment specifies requirements, test procedures and reporting of information related to
boilers that are to be connected to air supply and combustion products evacuation ducts that are not supplied
as an integral part of the boiler.
If declared by the appliance manufacturer, air supply and combustion products evacuation ducts complying
with the relevant harmonised standards of CEN/TC166 for chimneys, can also be used. It is essential that the
combination of appliance and its ducts still fulfil all relevant requirements of this standard.
According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following
countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Cyprus, Czech
Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia,
Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain,
Sweden, Switzerland and United Kingdom.
3
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SIST EN 483:2001/A4:2008
EN 483:1999/A4:2007 (E)
1 Modification to the scope
Delete footnote n°.1.
2 Modification to Clause 2 “Normative references”
Add the following normative references in Clause 2:
EN 513, Unplasticized polyvinylchloride (PVC-U) profiles for the fabrication of windows and doors
Determination of the resistance to artificial weathering
EN 13216-1:2004, 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 14241-1: 2005, Chimneys Elastomeric seals and elastomeric sealants Material requirements and
test methods Part 1: Seals in flue liners
EN 14471:2005, Chimneys System chimneys with plastic flue liners Requirements and test methods
EN ISO 178, Plastics Determination of flexural properties (ISO 178:2001)
EN ISO 179-1, Plastics Determination of Charpy impact properties Part 1: Non-instrumented impact test
(ISO 179-1:2000)
EN ISO 527-1, Plastics Determination of tensile properties Part 1: General principles (ISO 527-1:1993
including Corr 1:1994)
EN ISO 527-2, Plastics Determination of tensile properties Part 2: Test conditions for moulding and
extrusion plastics (ISO 527-2:1993 including Corr 1:1994)
Methods for determining the density of non-cellular plastics
EN ISO 1183, Plastics
EN ISO 9969, Thermoplastics pipes Determination of ring stiffness (ISO 9969:1994)
ISO 37, Rubber, vulcanized or thermoplastic – Determination of tensile stress-strain properties
ISO 188, Rubber, vulcanized or thermoplastic Accelerated ageing and heat resistance tests
ISO 815, Rubber, vulcanized or thermoplastic Determination of compression set at ambient, elevated or
low temperatures
ISO 1817, Rubber, vulcanized Determination of the effect of liquids
ISO 2781, Rubber, vulcanized Determination of density
ISO 6914, Rubber, vulcanized or thermoplastic Determination of ageing characteristics by measurement of
stress relaxation
ISO 7619, Rubber, vulcanized or thermoplastic Determination of indentation hardness
4
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SIST EN 483:2001/A4:2008
EN 483:1999/A4:2007 (E)
In the original Clause 2 replace the following three standards:
prEN 1856-1, Chimneys Performance requirements for metal chimneys Part 1: System chimney
products
prEN 1856-2, Chimneys Performance requirements for metal chimneys Part 2: Metal liners and
connecting flue pipes products
EN 1859, Chimneys Metal chimneys Test methods
with:
EN 1856-1:2003, Chimneys Requirements for metal chimneys Part 1: System chimney products
EN 1856-2, Chimneys Requirements for metal chimneys Part 2: Metal liners and connecting flue pipes
EN 1859:2000, Chimneys Metal chimneys Test methods
3 Modification to Clause 3 “Terms and definitions”
Add a new definition 3.3.2.11 as follows:
3.3.2.11
ducts support
accessory used to fix, or transfer the load of, air supply and combustion product evacuation ducts to
structural elements (building, etc.)
Add a new definition 3.4.17 as follows:
3.4.17
overheat combustion products temperature
maximum temperature of the combustion products in case of overheat, at the exit of the boiler where it is
intended to be connected to a duct, flue or chimney
Add a new definition 3.4.18 as follows:
3.4.18
nominal working combustion products temperature
maximum temperature of the combustion products in case of normal functioning, at the exit of the boiler
where it is intended to be connected to a duct or chimney. Normal functioning is considered to reflect the
°
situation of running the boiler at inlet/outlet temperatures of 70/90 C, and just at the point that the control
thermostat is switching. (See also 7.4.1.1)
3.4.19
condensing operation mode of flue system
operation mode where, under normal operation conditions, flue gas condensate is available
5 Modification to Clause 5 “Constructional requirements”
5.3.1 General
Add in the first sentence of the first paragraph after the words ", .of the boilers" ", including connecting
ducts, ducts and terminals , if any,"
Delete the fourth paragraph of 5.3.1.
5
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SIST EN 483:2001/A4:2008
EN 483:1999/A4:2007 (E)
Remark; now included in a new subclause 6.10.
5.3.5 Separate combustion product evacuation ducts
5.3.5.1
Stability under mechanical loading
Delete this subclause.
6 Modification to Clause 6 “Operational requirements”
6.2.2.1 General
Replace the 3rd sentence with the following: “Soundness is verified before and after all the tests of this
standard, except the tests specified in 7.10.”
Add a new subclause 6.2.2.7:
6.2.2.7 Durability against corrosion
The durability against corrosion of the combustion product evacuation duct is demonstrated by fulfilling
either:
— the requirements in Table A4-1 or
— a corrosion test method from normative Annex A of EN 1856-1:2003.
Table A4-1 Flue duct material specification
Material Symbol Minimum Minimum
Nominal nominal
Thickness Thickness
b) b)
non- condensing condensing
mm mm
EN AW – 4047A EN AW Al Si 12 (A), and 0,5 1,5
CU <0,1%, Zn<0,15%
(cast aluminium)
EN AW – 1200A EN AW-AL 99,0 (A) 0,5 1,5
EN AW-6060 EN AW-AI MgSi 0,5 1,5
1.4401 X5CrNiMo 17-12-2 0,4 0,4
a)
0,4 0,4
1.4404 X2CrNiMo 17-12-2
1.4432 X2CrNiMo 17-12-3 0,4 0,4
1.4539 X1NiCrMoCu 25-20-5 0,4 0,4
c) c)
1.4401 X5CrNiMo 17-12-2 0,11 0,11
a c) c)
1.4404 X2CrNiMo 17-12-2 0,11 0,11
c) c)
1.4432 X2CrNiMo 17-12-3 0,11 0,11
c) c)
1.4539 X1NiCrMoCu 25-20-5 0,11 0,11
a) o
Equivalent for material N 1.4404 = 1.4571 (symbol X6CrNiMoTi 17-12-2).
b)
According to declaration of manufacturer, see definition 3.4.19
c)
Flexible liners only allowed when installed in an existing chimney
6
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SIST EN 483:2001/A4:2008
EN 483:1999/A4:2007 (E)
The actual minimum thickness of the materials shall always be greater than 90 % of the minimum nominal
thicknesses.
6.4.1 Limiting temperatures
Rename the existing subclause 6.4.1.2 from
6.4.1.2 Limiting temperatures of the side walls, the front and the top
to
6.4.1.2 Limiting temperatures of the side walls, the front and the top of the outside of the boiler and of
the ducts
Modify the existing subclause 6.4.1.3 from
6.4.1.3 Limiting temperatures of the test panels and floor
to
6.4.1.3 Limiting temperatures adjacent to the boiler casing and ducts
Reword the text of subclause 6.4.1.3 to
The temperature of the floor on which the boiler is eventually placed, where appropriate, that of the panels
placed at the side of and behind the boiler and the surfaces adjacent to ducts and/or terminal shall not, at
any point, exceed the ambient temperature by more than 80 K under the test conditions of 7.4.1.4.
If this temperature rise is between 60 K and 80 K, the manufacturer shall state in the technical instructions
for the installer the nature of the protection which has to be applied between the boiler and the adjacent
surfaces when these latter are made of inflammable materials.
This protection shall be supplied to the test laboratory, which shall check that, with the boiler fitted with it,
the surface temperatures measured under the test conditions of 7.4.1.4 do not exceed the ambient
temperature by more than 60 K.
Add a new subclause 6.5.7.4
6.5.7.4 Overheat combustion products temperature
For the purpose of flue design, the overheat temperature of the combustion products shall be recorded at
the outlet of the boiler. The test shall be carried out as prescribed in 7.5.7.4.
Add a new subclause 6.10
6.10 Mechanical resistance and stability of ducts, terminal and fitting pieces
where the air supply and combustion product evacuation ducts are supplied or specified by the
manufacturer the ducts, terminal and fitting pieces shall meet the following requirements:
6.10.1 Compressive strength
6.10.1.1
Duct sections and fittings
where compressive stresses occur in the air supply or combustion products evacuation ducts, due to the
weight of the duct components, the ducts shall show no permanent deformation when tested in
accordance with 7.10.1.1
7
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SIST EN 483:2001/A4:2008
EN 483:1999/A4:2007 (E)
6.10.1.2
Ducts support
when tested in accordance with 7.10.1.2, the maximum displacement of the ducts at the support shall not
be greater than 5 mm in the direction of the load
6.10.1.3
Vertical terminals
when tested in accordance with 7.10.1.3, the terminal shall show no permanent deformation
6.10.2 Lateral strength
6.10.2.1
Resistance to bending under load
when the manufacturer declares the air supply and combustion product evacuation ducts to be suitable for
non-vertical installation, these ducts are tested in accordance with 7.10.2.1. The deflection of any part shall
not be more than 2 mm per meter in distance between supports.
6.10.2.2
Components subject to wind load
when the manufacturer declares a certain length of the air supply and combustion product evacuation
ducts to be suitable for external installation, the ducts shall show no permanent deformations when tested
in accordance with 7.10.2.2.
Add a new subclause 6.11
6.11 Requirements for plastic in the combustion product evacuation ducts, terminals and fitting
pieces for boilers
6.11.1. Performance requirements
6.11.2
Thermal resistance
if the thermal resistance is not declared to be zero, the thermal resistance value of the chimney section
declared by the manufacturer shall be verified by testing in accordance with 7.11
6.11.3 Materials
6.11.3.1 Characterization
The material shall be identified by the thermal, mechanical and physicochemical behaviour.
The characterization shall include the density and at least 5 more properties. At least one property has to
be taken of each of the three groups of methods in Annex A of EN 14471:2005.
The characterization methods shall be chosen in such a way that the characterization includes the relevant
properties of the material. Examples are given in Annex B of EN 14471:2005.
6.11.3.2 Long-term resistance to thermal load
The material shall be capable of withstanding exposure to the nominal working temperature as described
in 7.11.2.2.
The tensile modulus and the yield stress shall be measured in all cases.
In case of thermosetting plastics the flexural modulus and flexural strength shall also be determined.
In case of flexible tubes the ring stiffness shall also be determined.
8
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SIST EN 483:2001/A4:2008
EN 483:1999/A4:2007 (E)
Other relevant properties like the density or the impact strength shall be measured additional before and
after the period of exposure, if they are relevant to evaluate the deterioration of the material.
The properties shall be determined in accordance with the methods of Annex R.
Alterations to the properties shall not exceed those set out in Table A4-2.
Table A4-2 — Criteria for testing long-term resistance to thermal load
Property Maximum permitted
variation
Impact strength ≤ 50 %
Tensile modulus ≤ 50 %
Yield stress ≤ 50 %
Density ≤ 2 %
Flexural modulus ≤ 50 %
Flexural strength ≤ 50 %
Ring stiffness ≤ 50 %
If these values are not met, it is allowed to take new reference values obtained after 24 h exposure in air at
nominal working temperature (conditioning) to release processing pressures/effects.
These effects are covered by the requirements for the mechanical stability of chimneys in accordance with
6.10.
6.11.3.3 Long-term resistance to condensate exposure
The combustion products evacuation duct with the terminal and fitting pieces shall be designed so that no
condensate remains.The material shall be capable of withstanding exposure to condensate as described in
7.11.2.3.
The tensile modulus and the yield stress shall be measured in all cases.
In case of thermosetting plastics the flexural modulus and flexural strength shall also be determined.
In case of flexible tubes the ring stiffness shall also be determined.
Other properties like the density or the impact strength shall be measured before and after the period of
exposure if they are relevant, by evaluation of the deterioration of the material.
The properties shall be determined in accordance with the methods of Annex R.
Alterations to the properties shall not exceed those set out in Table A4-3
9
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SIST EN 483:2001/A4:2008
EN 483:1999/A4:2007 (E)
Table A4-3 — Criteria for testing long-term resistance to condensate exposure
Property Value
Impact strength ≤ 50 %
Tensile modulus ≤ 50 %
Yield stress ≤ 50 %
Density ≤ 2 %
Flexural modulus ≤ 50 %
Flexural strength ≤ 50 %
Ring stiffness ≤ 50 %
NOTE If these values are not met, it is allowed to take new reference values obtained after 24 h exposure in air at
nominal working temperature (conditioning) to release processing pressures/effects.
These effects are covered by the requirements for the mechanical stability of chimneys in accordance with
6.10.
If the air supply and combustion products evacuation duct has been tested before on an appliance with a
higher nominal temperature and/or thermal load this system will be deemed to meet these requirements.
6.11.3.4 Resistance to condensing/non- condensing cycling
After exposure in accordance with 7.11.2.4 the flue duct is disassembled and visually examined. It shall
not show damages like cracks and pinholes.
The dimensions of the sections and fittings shall not change more than 2 %.
The tensile modulus and the yield stress shall be measured in all cases.
In case of thermosetting plastics the flexural modulus and flexural strength shall also be determined.
In case of flexible tubes the ring stiffness shall also be determined.
Other properties like the density or the impact strength shall also be measured before and after the period
of exposure, if they are relevant to the evaluation of the deterioration of the material.
The properties shall be determined in accordance with the methods as given in Annex R.
Alterations to the properties shall not exceed those set out in Table A4-4.
If the values are not met, it is allowed to take new reference values obtained after 24 h exposure in air at
nominal working temperature (conditioning) to release processing pressures/effects.
10
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SIST EN 483:2001/A4:2008
EN 483:1999/A4:2007 (E)
Table A4-4 — Criteria for testing resistance to condensing/ non- condensing cycling
Property Value
Impact strength ≤ 30 %
Tensile modulus ≤ 30 %
Yield stress ≤ 30 %
Density ≤ 2 %
Flexural modulus ≤ 30 %
Flexural strength ≤ 30 %
Ring stiffness ≤ 30 %
6.11.3.5 Resistance to ultraviolet radiation (UV)
Those parts of the air supply and combustion products evacuation duct that are exposed to UV shall be
tested in accordance with 7.11.2.5.
After the exposure test the following requirements shall be met:
— the impact strength, as given in Annex R, shall not change more than 50 %.
— in case of thermosetting plastics the flexural modulus and flexural strength, as given in Annex R, shall
not change more than 50 %.
The above tests shall be carried out in such a way that the maximum stress will occur at the radiated side
of the test pieces.
Testing is not necessary in cases where the free end of the plastic flue duct (terminal) is not more than 2D
but maximum 0,4 m in length exposed to UV of the sun.
6.11.3.6 Geometrical stability
After exposure in accordance with 7.11.2.6 the change in internal diameter/length of the pipe shall not
exceed 2 %.
For each size group of diameters one size shall be tested.
6.11.3.7 Reaction to fire
The reaction to fire shall be declared by the manufacturer according to EN 13501-1, but shall be equal or
better than E.
Add a new subclause 6.12
6.12 Requirements for elastomeric seals and elastomeric sealants in the combustion product
evacuation ducts, terminals and fitting pieces
6.12.1 Characterization
The material shall be characterised by determining the following properties in accordance with the
methods as described in 6.2 of EN 14241-1:2005
— hardness;
11
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SIST EN 483:2001/A4:2008
EN 483:1999/A4:2007 (E)
— density;
— compression set;
— tensile strength;
— stress at 100 % of elongation.
6.12.2 Long-term resistance to thermal load
The material shall be capable of withstanding exposure to the nominal working combustion products
temperature.
After exposure the following requirements shall be met:
After 56 days of exposure the properties given in Table A4-5 should not deviate from the original value by
more than the values as listed in Table A4-5 column A.
If the change of a property is greater, then the deviation from the original value shall not be greater than
the values as listed in column B. Furthermore the change in properties between 28 and 56 days of
exposure shall be less than the change between the original value and 28 days of exposure (stabilization
of the material).
Table A4-5 — Criteria for testing long-term resistance to thermal load
Property A B
Hardness (shore A) 7 units 10 units
Tensile strength 30 % 50 %
Stress at 100 % of elongation 35 % 45 %
6.12.3 Long-term resistance to condensate exposure
The material shall be capable of withstanding exposure to test condensate as described in Table A4-9.
The test condensate and its test temperature is depending on the construction class as mentioned below:
• Construction class K1, no direct exposure to the flue gas and/or condensate
• Construction class K2, direct exposure to the flue gas and/or condensate
After exposure the following requirements shall be met:
After 56 days of exposure the properties given in Table A4-6 should not deviate from the original value by
more than the values as listed in Table A4-6, column A. If the change of a property is higher, then the
deviation from the original value shall not be more than the values as listed in Table A4-6, column B.
Besides the change in properties between 28 and 56 days of exposure shall be less than the change
between the original value and 28 days of exposure (stabilization of the material).
12
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SIST EN 483:2001/A4:2008
EN 483:1999/A4:2007 (E)
Table A4-6 — Criteria for testing-long term resistance to condensate exposure
Property A B
Hardness (shore A) ≤ 7 units ≤ 10 units
Tensile strength ≤ 30 % ≤ 50 %
Volume -5 / +25 % -5 / +25 %
Stress at 100 % of elongation 35 % 45 %
6.12.4 Cyclic condensate resistance test
After exposure in accordance with 7.12.4 the test pieces or seals are inspected. The seals shall not show
damage e.g. cracks. The inspection shall be performed visually at approximately 100 % elongation. If the
performance of the visual inspection is not applicable (depending on the properties of the test pieces e.g.
diameter, hardness) or in case of any suspected change of the material, alternatively it shall be checked
that the tensile strength and the stress at 100 % of elongation will not have changed by more than 30 %
when tested in accordance with ISO 37 on a minimum of 6 test pieces.
6.12.5 Relaxation behaviour
When tested in accordance with 7.12.5 the stress relaxation shall be lower than 50 %
6.12.6 Compression set
When tested in accordance with 7.12.6 the compression set shall not exceed 25 %.
6.12.7 Low temperature resistance
When tested in accordance with 7.12.7 the compression set shall not exceed 50%.
6.12.8 Joints in elastomeric seals
6.12.8.1 Durability
If an elastomeric seal has a joint, the requirements specified in 6.12.2 and 6.12.3 shall also be met for test
pieces that include the joint, when tested in accordance with 7.12.2 and 7.12.3.
6.12.8.2 Strength
When tested in accordance with 7.12.8, visual inspection of the test pieces that are still being elongated
shall not reveal any cracks or fractures.
NOTE A joint in an elastomeric seal is always a risk, so seals should not have more than one joint.
7 Modification to Clause 7 “Test methods”
7.4.1.3 Temperatures of the side walls, the front and the top
Change the title of 7.4.1.3 as follows:
7.4.1.3 Limiting temperatures of side walls, front, top and ducts
13
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SIST EN 483:2001/A4:2008
EN 483:1999/A4:2007 (E)
Replace the first paragraph with the following:
“The temperature of the hottest places on side walls, front, top and ducts are measured by means of
temperature sensors with the sensing elements applied against the external surface of the boiler casing
and the ducts.”
7.4.1.4 Temperatures of the test panels and floor
Modify the title and the first paragraph of 7.4.1.4 as follows:
“7.4.1.4 Limiting temperatures adjacent to test panels and floor
The boiler including its ducts is installed in accordance with the manufacturer's instructions.”
Add a new subclause to 7.5.7 “Thermostats and water temperature limiting devices”
“7.5.7.4 Overheat combustion products temperature
During the overheating tests, according to 7.5.7.3.2, the temperature of the combustion products is
recorded continuously until the temperature ceases to increase after the safety temperature limiter or the
overheat cut-off device causes non-volatile lockout of the boiler. The overheat combustion products
temperature is determined."
Add a new subclause to 7.5.7, Thermostats and water temperature limiting devices
“7.5.7.5 Nominal working combustion products temperature
During the control thermostat tests, according to 7.5.7.2.1, with the thermostat set at the maximum setting
temperature, the temperature of the combustion products is recorded continuously until the thermostat
operates. The nominal working combustion products temperature is determined.”
Add a new subclause 7.10 as follows:
7.10 Mechanical resistance and stability of ducts, terminals and fitting pieces
7.10.1 Compressive strength
7.10.1.1 Duct sections and fittings
The longest vertical ducts, fitting pieces and terminal as specified by the manufacturer
...
SLOVENSKI SIST EN 483:2001/oprA4:2005
PREDSTANDARD
julij 2005
Plinski kotli za centralno ogrevanje - Tip kotlov C z imensko močjo do
vključno 70 kW – Dopolnilo A4
Gas fired central heating boilers – Type C boilers of nominal heat input not
exceeding 70kW – Amendment A4
ICS 91.140.10 Referenčna številka
SIST EN 483:2001/oprA4:2005(en)
© Standard je založil in izdal Slovenski inštitut za standardizacijo. Razmnoževanje ali kopiranje celote ali delov tega dokumenta ni dovoljeno
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EUROPEAN STANDARD
DRAFT
EN 483:1999
NORME EUROPÉENNE
EUROPÄISCHE NORM
prA4
April 2005
ICS
English version
Gas fired central heating boilers - Type C boilers of nominal heat
input not exceeding 70kW
Chaudières de chauffage central utilisant les combustibles
gazeux - Chaudières des types C dont le débit calorifique
nominal est inférieur ou égal à 70 kW
This draft amendment is submitted to CEN members for enquiry. It has been drawn up by the Technical Committee CEN/TC 109.
This draft amendment A4, if approved, will modify the European Standard EN 483:1999. If this draft becomes an amendment, CEN
members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for inclusion of this amendment
into the relevant national standard without any alteration.
This draft amendment was established by CEN 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, Cyprus, Czech Republic, Denmark, Estonia, Finland, France,
Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia,
Slovenia, Spain, Sweden, Switzerland and United Kingdom.
Warning : This document is not a European Standard. It is distributed for review and comments. It is subject to change without notice and
shall not be referred to as a European Standard.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre: rue de Stassart, 36 B-1050 Brussels
© 2005 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 483:1999/prA4:2005: E
worldwide for CEN national Members.
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EN 483:1999/prA4:2005 (E)
Contents
Foreword .3
1 Scope .4
2 Normative references .4
Table A4-1 – Flue duct material specification (according to EN 10088-1 and EN 573-
3 .6
Table A4-2 — Criteria for testing long-term resistance to thermal load.8
Table A4-3 — Criteria for testing long-term resistance to condensate exposure .9
Table A4-4 — Criteria for testing resistance to condensing/ non- condensing
cycling.10
Table A4-5 — Criteria for testing long-term resistance to thermal load.11
Table A4-6 — Criteria for testing-long term resistance to condensate exposure .12
Table A4-7 – Relation between test duration and temperature levels. .15
Table A4-8 – Composition of test condensate for corrosion.15
Table A4-9 – The test condensate shall have the composition.18
Table ZA.2 – Clauses of this amendment addressing essential requirements of the
GAD covering also requirements of M 105 .22
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EN 483:1999/prA4:2005 (E)
Foreword
This document has been prepared by the Technical Committee CEN/TC 109 "Gas-fired central
heating boilers", the secretariat of which is held by NEN.
This document is currently submitted to the CEN Enquiry.
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 Directive(s), see informative Annex ZA which is an integral part of this
document.
As shown in annex ZA2 of this amendment the following essential requirements mentioned in
mandate M105 are already covered by the essential requirements of the GAD.
— Fire resistance – integrity (I);
— Gas tightness/leakage;
— Flow resistance;
— Dimensioning;
— Flexural tensile strength;
— Compressive strength;
— Durability of tightness/leakage against chemicals/corrosion;
— Durability of flexural tensile strength against chemicals;
— Durability of compressive strength against chemicals
— Fire Reaction.
To fulfill the Gas appliance Directive this standard contains normative paragraphs specifying
requirements for combustion products evacuation ducts, which are part of an appliance.
This draft Amendment has been prepared to amplify the requirements and test methods for flues
supplied as an integral part of the boiler to support the EU Directive 89/106/EEC on construction
products.
Additionally, this Amendment specifies requirements, test procedures and reporting of information
necessary for flue design for boilers where the flue is not supplied as an integral part of the boiler.
Requirements and test methods for combustion products evacuation ducts made of metal are covered
in the present version of this amendment. The introduction of combustion products evacuation ducts
made of plastic and elastomeric seals are under preparation by TC109.
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EN 483:1999/prA4:2005 (E)
1 Scope
Delete the footnote no.1.
2 Normative references
EN 573-3, Aluminium and aluminium alloys – Chemical composition and forms of wrought products –
Part 3: Chemical composition
EN 1856-1, Chimneys – Requirements for metal chimneys – Part 1: System chimney products
EN 1859, Chimneys – Metal chimneys – Test methods
EN 13501-1, Fire classification of construction products and building elements – Part 1: Classification
using test data from reaction to fire tests
EN 13501-2, Fire classification of construction products and building elements – Part 2: Classification
using data from fire resistance tests, excluding ventilation services
EN 13216-1, Chimneys – Test methods for system chimney – Part 1: General test methods
EN 14471, Chimneys – System chimneys with plastic flue liners – Requirements and test methods
ISO 37:1994, Rubber, vulcanized or thermoplastic – Determination of tensile stress-strain properties
ISO 178:2001, Plastics – Determination of flexural properties
ISO 179:1997, Plastics – Determination of Charpy impact properties
ISO 188:1998, Rubber, vulcanized or thermoplastic – Accelerated ageing and heat resistance tests
ISO 527-1:1993, Plastics – Determination of tensile properties – Part 1: General principles
ISO 527-2:1993, Plastics – Determination of tensile properties – Part 2: Test conditions for moulding
and extrusion plastics
ISO 815:1991, Rubber, vulcanized or thermoplastic – Determination of compression set at ambient,
elevated or low temperatures
ISO 1183:1987, Plastics – Methods for determining the density and relative density of non-cellular
plastics
ISO 1817:1999, Rubber, vulcanized – Determination of the effect of liquids
ISO 2781:1988, Rubber, vulcanized – Determination of density
ISO 6914:2004, Rubber, vulcanized or thermoplastic – Determination of ageing characteristics by
measurement of stress relaxation
ISO 7619:1997, Rubber – Determination of indentation hardness by means of pocket hardness meters
ISO 9969:1994, Thermoplastics pipes – Determination of ring stiffness
ISO 10888:1999, Keyless type three-jaw drill chucks – Specification
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EN 483:1999/prA4:2005 (E)
Add a new definition 3.3.2.11 as follows:
3.3.2.11 Ducts support
accessory used to fix, or transfer the load of, air supply and combustion product evacuation ducts to
structural elements (building, etc.)
Add a new definition 3.4.17 as follows:
3.4.17 Overheat combustion products temperature
maximum temperature of the combustion products in case of overheat, at the exit of the boiler where it
is intended to be connected to a duct, flue or chimney
5.3 Materials and thicknesses
5.3.1 General
Add in the first sentence of the first paragraph after the words ", .of the boilers":
",including ducts, terminals and fitting pieces, if any,"
Delete the fourth paragraph of clause 5.3.1.
Remark; now included in a new clause 6.10.
5.3.5 Separate combustion product evacuation ducts
5.3.5.1 Stability under mechanical loading
This clause of EN 483 is not applicable.
Add a new clause:
“5.4.4.7 Dimensions and of air supply and combustion product evacuation ducts connection pieces
For boilers of types C , C , C and C where the boiler is to be connected to separately supplied air
2 4 6 8
supply and combustion product evacuation ducts, the manufacturer shall quote the nominal size of
ducts on the boiler or the fitting piece to which air supply and combustion product evacuation ducts are
to be connected. These connections may be concentric or separate.
In cases where the ducts, spigots or sockets are not of a circular cross section a detailed dimensioned
drawing shall be provided.
6.2.2.1 General
Modify
nd
Alter the present 2 sentence: Soundness is verified before and after all the tests of this standard,
except the tests according to clause 7.10.
Add a new clause 6.2.2.7:
6.2.2.7 Durability against corrosion
The durability against corrosion of the combustion product evacuation duct is demonstrated by fulfilling
either:
— the requirements in table A4-1 or
— the corrosion test method A1 from normative Annex A of EN 1856-1
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EN 483:1999/prA4:2005 (E)
Table A4-1 – Flue duct material specification (according to EN 10088-1 and EN 573-3
Material Type Material No. Symbol Minimal Minimal
Thickness Thickness
non- condensing
condensing
mm mm
10 EN AW – 4047A EN AW Al Si 12(B) and 0,5 1,5
CU <0,1%, Zn<0,15%
(cast aluminium)
11 EN AW – 1200A EN AW-AL 99,0 (A) 0,5 1,5
13 EN AW-6060 EN AW-AI MgSi 0,5 1,5
40 1.4401 X5CrNiMo 17-12-2 0,4 0,6
a
50 1.4404 X2CrNiMo 17-12-2 0,4 0,6
60 1.4432 X2CrNiMo 17-12-3 0,4 0,6
70 1.4539 X1NiCrMoCu 25-20-5 0,4 0,6
a o
Equivalent for material N 1.4404 = 1.4571 (symbol X6CrNiMoTi 17-12-2).
6.4.1 Limiting temperatures
Rename the existing clause 6.4.1.2 from
6.4.1.2 Limiting temperatures of the side walls, the front and the top
to
6.4.1.2 Limiting temperatures of the side walls, the front and the top of the outside of the
boiler and of the ducts
Modify the existing clause 6.4.1.3 from
6.4.1.3 Limiting temperatures of the test panels and floor
to
6.4.1.3 Limiting temperatures adjacent to the boiler casing and ducts
Reword the text of clause 6.4.1.3 to:
The temperature of the floor on which the boiler is placed, where appropriate, that of the panels placed
at the side of and behind the boiler and the surfaces adjacent to ducts and/or terminal shall not, at any
point, exceed the ambient temperature by more than 80 K under the test conditions of 7.4.1.4.
When this temperature rise is between 60 K and 80 K, the manufacturer shall state in the technical
instructions for the installer the nature of the protection which has to be applied between the boiler and
the adjacent surfaces when these latter are made of inflammable materials.
This protection shall be supplied to the test laboratory, which shall check that, with the boiler fitted with
it, the surface temperatures measured under the test conditions of 7.4.1.4 do not exceed the ambient
temperature by more than 60 K.
Add a new sub clause 6.5.7.4:
6.5.7.4 Overheat combustion products temperature
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EN 483:1999/prA4:2005 (E)
For the purpose of flue design, the overheat temperature of the combustion products shall be recorded
at the outlet of the boiler. The test shall be carried out according to 7.5.7.4.
Add a new clause 6.10
6.10 Mechanical resistance and stability of ducts, terminal and fitting pieces
Where the air supply and combustion product evacuation ducts are supplied or specified by the
manufacturer the ducts, terminal and fitting pieces shall meet the following conditions.
6.10.1 Compressive Strength
6.10.1.1 Duct sections and fittings
Where compressive stresses occur in the air supply or combustion products evacuation ducts, due to
the weight of the duct components, the ducts shall show no permanent deformation when tested in
accordance with 7.10.1.1.
6.10.1.2 Ducts support
When tested in accordance with 7.10.1.2, the maximum displacement of the ducts at the support shall
not be greater than 5 mm in the direction of the load.
6.10.1.3 Vertical terminals
When tested in accordance with 7.10.1.3, the terminal shall show no permanent deformation.
6.10.2 Lateral strength
6.10.2.1 Flexural tensile strength
When the manufacturer declares the air supply and combustion product evacuation ducts to be
suitable for non-vertical installation, these ducts are tested in accordance with 7.10.3.1. The deflection
of any part shall not be more than 2 mm per meter in distance between supports.
6.10.2.2 Components subject to wind load
When the manufacturer declares a certain length of the air supply and combustion product evacuation
ducts to be suitable for external installation, the ducts shall show no permanent deformations when
tested in accordance with 7.10.2.2.”
Add a new clause 6.11
6.11 Requirements for plastic in the combustion product evacuation ducts, terminals and fitting
pieces for boilers
6.11.1 Performance requirements
6.11.1.1 Fire resistance
For the resistance from external to external the performance criteria of integrity and insulation shall be
declared in accordance with EN 13501-2 in relation to the outer wall.
6.11.1.2 Thermal resistance
If the thermal resistance is not declared to be zero, the thermal resistance value of the chimney
section declared by the manufacturer shall be verified by testing in accordance with 7.11
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EN 483:1999/prA4:2005 (E)
6.11.2 Materials
6.11.2.1 Characterisation
The material shall be identified by the thermal, mechanical and physicochemical behaviour.
The characterisation shall include the density and at least 5 more properties. At least one property has
to be taken of each off the three groups of methods in Annex A of PrEN 14471.
The characterisation methods shall be chosen in such a way that the characterisation include the
relevant properties of the material. Examples are given in Annex B. of PrEN 14471.
6.11.2.2 Long-term resistance to thermal load
The material shall be capable of withstanding exposure to the nominal working temperature as
described in 7.11.2.2.
The tensile modulus and the yield stress shall be measured in all cases.
In case of thermosetting plastics the flexural modulus and flexural strength shall also be determined.
In case of flexible tubes the ring stiffness shall also be determined.
Other relevant properties like the density or the impact of strength shall be measured additional before
and after the period of exposure, if they are relevant to evaluate the deterioration of the material.
The properties shall be determined in accordance with the methods as listed in Annex Q.
The properties shall not change more than the values as listed in Table A4 -2
Table A4-2 — Criteria for testing long-term resistance to thermal load
Property Value
Impact strength ≤ 50 %
Tensile modulus ≤ 50 %
Yield stress ≤ 50 %
Density ≤ 2 %
Flexural modulus ≤ 50 %
Flexural strength ≤ 50 %
Ring stiffness ≤ 50 %
NOTE If these values are not met, it is allowed to take new reference values obtained after 24 h
exposure in air at nominal working temperature (conditioning) to release processing pressures/effects.
These effects are covered by the requirements for the mechanical stability of chimneys in accordance
with and 6.10.
6.11.2.3 Long-term resistance to condensate exposure
The combustion evacuation duct with the terminal and fitting pieces should be designed so that no
condensate remains.The material shall be capable of withstanding exposure to condensate as
described in 7.11.2.3.
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EN 483:1999/prA4:2005 (E)
The tensile modulus and the yield stress shall be measured in all cases.
In case of thermosetting plastics the flexural modulus and flexural strength shall also be determined.
In case of flexible tubes the ring stiffness shall also be determined.
Other relevant properties like the density or the impact strength shall be measured additional before
and after the period of exposure, if they are relevant to evaluate the deterioration of the material.
The properties shall be determined in accordance with the methods as listed in Annex Q.
The properties shall not change more than the values as listed in Table A4-3.
Table A4-3 — Criteria for testing long-term resistance to condensate exposure
Property Value
Impact strength ≤ 50 %
Tensile modulus ≤ 50 %
Yield stress ≤ 50 %
Density ≤ 2 %
Flexural modulus ≤ 50 %
Flexural strength ≤ 50 %
Ring stiffness ≤ 50 %
NOTE If these values are not met, it is allowed to take new reference values obtained after 24 h
exposure in air at nominal working temperature (conditioning) to release processing pressures/effects.
These effects are covered by the requirements for the mechanical stability of chimneys in accordance
with and 6.10.
6.11.2.4 Resistance to condensing/ non- condensing cycling
After exposure in accordance with 7.11.2.4 the flue duct is disassembled and visual examined. It shall
not show damages like cracks and pinholes.
The dimensions of the sections and fittings shall not change more than 2 %.
The tensile modulus and the yield stress shall be measured in all cases.
In case of thermosetting plastics the flexural modulus and flexural strength shall also be determined.
In case of flexible tubes the ring stiffness shall also be determined.
Other relevant properties like the density or the impact strength shall be measured additional before
and after the period of exposure, if are relevant to evaluate the deterioration of the material.
The properties shall be determined in accordance with the methods as listed in Annex Q.
The properties shall not change more than the values as listed in Table A4-4.
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EN 483:1999/prA4:2005 (E)
Table A4-4 — Criteria for testing resistance to condensing/ non- condensing cycling
Property Value
Impact strength ≤ 30 %
Tensile modulus ≤ 30 %
Yield stress ≤ 30 %
Density ≤ 2 %
Flexural modulus ≤ 30 %
Flexural strength ≤ 30 %
Ring stiffness ≤ 30 %
NOTE If these values are not met, it is allowed to take new reference values obtained after 24 h
exposure in air at nominal working temperature (conditioning) to release processing pressures/effects.
6.11.2.5 Resistance to ultraviolet radiation (UV)
The material of the products that is declared to be suitable for exposure to UV (e.g. outdoor
installation, where location class conforms to 4.9), shall be tested in accordance with 7.11.2.5.
After the exposure test the following requirements shall be met:
— the impact strength, as mentioned in annex Q, shall not change more than 50 %.
— in case of thermosetting plastics the flexural modulus and flexural strength, as mentioned in annex
Q, shall not change more than 50 %.
The above tests shall be carried out in such a way that the maximum stress will occur at the radiated
side of the test pieces.
Testing is not necessary in cases where the free end of the plastic flue duct (terminal) is not more than
2D but maximum 0,4m in length exposed to UV of the sun.
6.11.2.6 Geometrical stability
After exposure in accordance with 7.11.2.6 the change in internal diameter/length of the pipe shall not
exceed 2%.
For each size group of diameters one size shall be tested.
6.11.2.7 Reaction to fire
The reaction to fire shall be declared acc. to prEN14471, but less than E (see EN 13501-1)
Add a new clause 6.12
6.12 Requirements for Elastomeric seals and elastomeric sealants in the combustion product
evacuation ducts, terminals and fitting pieces
6.12.1 Characterisation
The material shall be characterised by
...
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