EN 483:1999/A4:2007

SLOVENSKI STANDARD
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
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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.

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

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.
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

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.
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

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
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.
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
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.
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;
— 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 wor
...