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EN 303-3:1998/A2:2004

(Amendment)

Heating Boilers - Part 3 : Gas-fired heating boilers - Assembly comprising a boiler body and a forced draught burner

Heating Boilers - Part 3 : Gas-fired heating boilers - Assembly comprising a boiler body and a forced draught burner

Replace the second paragraph by the following text :
"This European Standard applies to standard boilers and low-temperature boilers with a nominal heat output not exceeding 1000 kW and with a water temperature at normal operation not exceeding 105 °C."
Replace the 2nd dash of the third paragraph by the following text :
"- condensing boilers;"
Delete the last but one paragraph of EN 303-3 :
"This European Standard does not contain all the necessary requirements for low temperature boilers. Nevertheless, the testing methods defined by this European Standard for the determination of useful efficiencies can be used for low temperature boilers, after being adapted in accordance with annex H."

Heizkessel - Teil 3 : Zentralheizkessel für gasförmige Brennstoffe - Zusammenbau aus Kessel und Gebläsebrenner

Der zweite Absatz wird durch den nachstehenden Text ersetzt:
"Diese Europäische Norm legt die Anforderungen für Standardheizkessel und Niedertemperatur-Heizkessel  mit einer Nennwärmebelastung bis 1 000 kW und mit einer Wassertemperatur, die bei normalen Betriebsbedingungen 105°C nicht übersteigt, fest.
Der zweite Spiegelstrich des dritten Absatzes wird durch den nachstehenden Text ersetzt:
"- Brennwertgeräte;"
Der vorletzte Absatz der EN 303-3 ist zu streichen:
"Diese Europäische Norm beinhaltet nur einige notwendige Anforderungen an Niedertemperatur-Heizkessel. Die in dieser Europäischen Norm definierten Versuchsmethoden für die Bestimmung der Wirkungsgrade können trotzdem nach Anpassung gemäß Anhang H für Niedertemperatur-Heizkessel Anwendung finden."

Chaudières de chauffage - Partie 3 : Chaudières de chauffage central utilisant les combustibles gazeux - Assemblage d'un corps de chaudière et d'un brûleur à air soufflé

Remplacer le deuxième alinéa par le texte suivant :
"La présente Norme européenne s'applique aux chaudières standard et aux chaudières basse température de puissance utile nominale inférieure ou égale à 1 000 kW dont la température normale de service ne dépasse pas 105 °C."
Remplacer le 2ème tiret du 3ème paragraphe par le texte suivant :
"- les chaudières à condensation ;"
Supprimer dans l'EN 303-3 l'avant-dernier paragraphe :
"La présente Norme européenne ne contient pas toutes les exigences nécessaires pour les chaudières à basse température. Cependant, les méthodes d'essai définies par la présente Norme européenne pour la détermination des rendements utiles peuvent être utilisées pour les chaudières à basse température, après les avoir adaptées conformément à l'Annexe H."

Kotli za ogrevanje - 3. del: Plinski kotli za ogrevanje – Sestav kotla in gorilnika s prisilnim vlekom - Dopolnilo A2

General Information

Status
Published
Publication Date
27-Apr-2004
Withdrawal Date
30-Oct-2004
ICS
91.140.10 - Central heating systems
Technical Committee
CEN/TC 109 - Central heating boilers using gaseous fuels
Drafting Committee
CEN/TC 109 - Central heating boilers using gaseous fuels
Current Stage
6060 - Definitive text made available (DAV) - Publishing
Start Date
28-Apr-2004
Completion Date
28-Apr-2004
Directive
2009/142/EC - DIRECTIVE 2009/142/EC OF THE EUROPEAN PARLIAMENT AND OF THE COUNCIL of 30 November 2009 relating to appliances burning gaseous fuels
90/396/EEC - Appliances burning gaseous fuels
92/42/EEC - Efficiency requirements for new hot-water boilers fired with liquid or gaseous fuels
Mandate
M/066 - Standardization mandate to CEN concerning Efficiency requirements for boilers
M/BC/CEN/89/6 - Standardization request to CEN concerning appliances burning gaseous fuels
Ref Project
SIST EN 303-3:1999/A2:2004 - Heating Boilers - Part 3 : Gas-fired heating boilers - Assembly comprising a boiler body and a forced draught burner

Relations

Amends
EN 303-3:1998 - Heating boilers - Part 3: Gas-fired central heating boilers - Assembly comprising a boiler body and a forced draught burner
Effective Date
22-Dec-2008

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Standards Content (Sample)


SLOVENSKI STANDARD
01-junij-2004
Kotli za ogrevanje - 3. del: Plinski kotli za ogrevanje – Sestav kotla in gorilnika s
prisilnim vlekom - Dopolnilo A2
Heating Boilers - Part 3 : Gas-fired heating boilers - Assembly comprising a boiler body
and a forced draught burner
Heizkessel - Teil 3 : Zentralheizkessel für gasförmige Brennstoffe - Zusammenbau aus
Kessel und Gebläsebrenner
Chaudieres de chauffage - Partie 3 : Chaudieres de chauffage central utilisant les
combustibles gazeux - Assemblage d'un corps de chaudiere et d'un bruleur a air soufflé
Ta slovenski standard je istoveten z: EN 303-3:1998/A2:2004
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 303-3:1998/A2
NORME EUROPÉENNE
EUROPÄISCHE NORM
April 2004
ICS 91.140.10
English version
Heating Boilers - Part 3 : Gas-fired heating boilers - Assembly
comprising a boiler body and a forced draught burner
Chaudières de chauffage - Partie 3 : Chaudières de Heizkessel - Teil 3 : Zentralheizkessel für gasförmige
chauffage central utilisant les combustibles gazeux - Brennstoffe - Zusammenbau aus Kessel und
Assemblage d'un corps de chaudière et d'un brûleur à air Gebläsebrenner
soufflé
This amendment A2 modifies the European Standard EN 303-3:1998; it was approved by CEN on 3 November 2003.
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 Central Secretariat 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 Central Secretariat 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.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre: rue de Stassart, 36  B-1050 Brussels
© 2004 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 303-3:1998/A2:2004: E
worldwide for CEN national Members.

Foreword
This document (EN 303-3:1998/A2:2004) has been prepared by 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 303-3:1998 shall be given the status of a national standard, either
by publication of an identical text or by endorsement, at the latest by October 2004, and conflicting national
standards shall be withdrawn at the latest by October 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).
WARNING : other requirements and other EU Directives may be applicable to the products falling within the scope
of this European Standard.
For relationship with EU Directive(s), see informative annex ZA, which is an integral part of this document.
According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following
countries are bound to implement this European Standard: Austria, Belgium, Czech Republic, Denmark, Finland,
France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Luxembourg, Malta, Netherlands, Norway, Portugal,
Slovakia, Spain, Sweden, Switzerland and the United Kingdom.
NOTE once constructional requirements for low-temperature boilers have been included within EN 303-1 they will replace the
constructional requirements of this amendment,
amendment A1 to European Standard EN 303-3 does not exist. The draft worked out under the reference EN 303-
3:1998/prA1 is now referenced prEN 303-7.
Contents
Delete annex H.
1 Scope
Replace the second paragraph by the following text :
"This European Standard applies to standard boilers and low-temperature boilers with a nominal heat output not
exceeding 1000 kW and with a water temperature at normal operation not exceeding 105 °C."
nd
Replace the 2 dash of the third paragraph by the following text :
"- condensing boilers;"
Delete the last but one paragraph of EN 303-3 :
"This European Standard does not contain all the necessary requirements for low temperature boilers.
Nevertheless, the testing methods defined by this European Standard for the determination of useful efficiencies
can be used for low temperature boilers, after being adapted in accordance with annex H."
3 Definitions
Add:
3.8
condensate
liquid formed from the combustion products during the condensation process
3.9
standard boiler
boiler for which the average water temperature can be restricted by design
3.10
low-temperature boiler
boiler which can work continuously with a water supply temperature of 35 °C to 40 °C, possibly producing
condensation in certain circumstances"
4.1 General principles
At the end of the clause, add:
“For low-temperature boilers, all parts of the heat exchanger(s) and other parts of the boiler likely to come into
contact with condensate shall be constructed of sufficiently corrosion resistant materials or materials protected by a
suitable coating in order to ensure a reasonable life for a boiler that is installed, used and maintained in accordance
with the manufacturer's instructions.
Surfaces in contact with condensate (except purpose provided drains, water traps and siphons) shall be designed
to prevent condensate retention.”
Add the following clause:
4.4 Condensate discharge for low-temperature boilers
For low-temperature boilers, a means of condensate discharge shall be provided if the condensate:
 impairs safety or correct operation;
 results in spillage from the appliance;
 causes deterioration of materials.
A pipe or pipes shall be used to discharge condensate when this is necessary. The internal diameter of the outside
connection of the condensate discharge system shall be at least 13 mm.
The disposal system, forming part of the boiler or supplied with the boiler, shall be such that:
 it can be easily inspected and cleaned in accordance with the manufacturer's instructions;
 it cannot transmit combustion products into the room where the boiler is installed; this requirement is satisfied if
the disposal system incorporates a water trap;
 a water tr
...

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Heating boilers - Part 3: Gas-fired central heating boilers - Assembly comprising a boiler body and a forced draught burner
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TC - Replace Tables 5 and 6

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This European Standard specifies the requirements and test methods for the construction, the safety and the rational energy usage of an assembly made up of a boiler body complying with EN 303- 11) and a forced draught gas burner complying with EN 676, using combustible gases, hereafter referred to as a "boiler".  This European Standard applies to a boiler:  - with a nominal output not exceeding 1 000 kW.  This European Standard does not contain all the necessary requirements for:  - assemblies designed as units;  - condensing boilers and low temperature boilers;  - boilers intended to be installed in the open;  - boilers permanently fitted with more than one flue outlet;  - boilers fitted with a draught diverter;  -  boilers intended to be connected to a common flue having mechanical    extraction.  This European Standard does not apply to living-space dedicated boilers   If the boiler body has already been tested with a liquid fuel burner, in accordance with EN 303-1, EN 303-2 and EN 304, only the tests described in annex G need to be performed.  In the case of a range of boilers, see annex F.  This European Standard does not contain all the necessary requirements for low temperature boilers. Nevertheless, the testing methods defined by this European Standard for the determination of useful efficiencies can be used for low temperature boilers, after being adapted in accordance with annex H.  This European Standard only covers type testing.

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EN 15502-1:2012/FprA1(Amendment)
Gas-fired heating boilers - Part 1: General requirements and tests
SIST EN 15502-1:2012/kFprA1:2015

Amendment for the addition of ecodesign requirements (Regulation No 813/2013)
and energy labelling requirements (Regulation No 811/2013)
This European Standard specifies the common requirements and test methods concerning, in particular the construction, safety, fitness for purpose, and rational use of energy, as well as the classification, marking and energy labelling of gas-fired central heating boilers that are fitted with atmospheric burners, fan assisted atmospheric burners or fully premixed burners, and are hereafter referred to as “boilers”.
This European Standard is to be used in conjunction with the specific Parts 2 (Part 2-1 and following ones).
This European Standard applies to boilers of types B and C, according to CEN/TR 1749:2014:
a)   that use one or more combustible gases of the three gas families at the pressures stated in EN 437;
b)   where the temperature of the heat transfer fluid does not exceed 105 °C during normal operation;
c)   where the maximum operating pressure in the water circuit does not exceed 6 bar;
d)   which can give rise to condensation under certain circumstances;
e)   which are declared in the installation instructions to be either a “condensing” boiler or a "low temperature boiler" or a “standard boiler”. If no declaration is given the boiler is to be considered a “standard boiler”
f)   which are intended to be installed inside a building or in a partially protected place;
g)   which are intended to produce hot water either by the instantaneous or storage principle, the whole being marketed as a single unit.
This European Standard applies to boilers designed for sealed water systems or for open water systems.
This general standard and the specific standards (see Part 2) provide requirements for boilers with known constructions. For boilers with any alternative constructions, which might not fully be covered by this standard or a specific standard, the risk associated with this alternative construction will need to be assessed.
An example of an assessment methodology, based upon risk assessment, is given in Clause 11.
This European Standard is not intended to cover appliances intended for connection to gas grids where the quality of the distributed gas is likely to vary to a large extent over the lifetime of the appliance.

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CEN
EN 15502-2-1:2012/FprA1(Amendment)
Gas-fired central heating boilers - Part 2-1: Specific standard for type C appliances and type B2, B3 and B5 appliances of a nominal heat input not exceeding 1 000 kW
SIST EN 15502-2-1:2013/kFprA1:2016

When final draft in CCMC - Double check that a decision (to submit to FV) is taken both by CEN/TC 166 and CEN/TC 109 - See CEN/BT Decision 72/2014

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