prEN 12309-2

Gas-fired sorption appliances for heating and/or cooling with a net heat input not exceeding 70 kW - Part 2: Safety

1.1   Scope of EN 12309 series
Appliances covered by EN 12309 include one or a combination of the following:
-   gas fired sorption chiller;
-   gas fired sorption chiller/heater;
-   gas fired sorption heat pump.
EN 12309 applies to appliances only when used for space heating and cooling with or without heat recovery.
EN 12309 applies to appliances having flue gas systems of type B and C (according to EN 1749:2020) and to appliances designed for outdoor installations, including type A. EN 12309 does not apply to air conditioners, it only applies to appliances having:
-   integral burners under the control of fully automatic burner control systems;
-   closed system refrigerant circuits in which the refrigerant does not come into direct contact with the water or air to be cooled or heated;
-   mechanical means to assist transportation of the combustion air and/or the flue gas.
The above appliances can have one or more primary or secondary functions (i.e. heat recovery - see definitions in EN 12309-1:2023). In the case of packaged units (consisting of several parts), the standard applies only to those designed and supplied as a complete package.
The appliances having their condenser cooled by air and by the evaporation of external additional water are not covered by this European Standard.
Installations used for heating and/or cooling of industrial processes are not within the scope of these standards.
NOTE   All the symbols given in this text are used regardless of the language used.
1.2   Scope of EN 12309-2
This document deals with the safety of gas-driven sorption heat pumps as defined in EN 12309 1:2023. Only types B12, B13, B22, B23, C12, C13, C32 and C33 and outdoor installations, including type A appliances, are covered in this document. This document does not include specific requirements on surface temperatures of external parts particular to children and elderly people.

Gasbefeuerte Sorptions-Geräte für Heizung und/oder Kühlung mit einer Nennwärmebelastung nicht über 70 kW - Teil 2: Sicherheit

1.1   Anwendungsbereich der Normenreihe EN 12309
Geräte, die von EN 12309 abgedeckt werden, beinhalten eine oder eine Kombination der folgenden Funktionen:
-   gasbefeuertes Sorptionskühlgerät;
-   gasbefeuertes Sorptionskühl / heizgerät;
-   gasbefeuerte Sorptionswärmepumpe.
EN 12309 gilt ausschließlich für Geräte für die Raumheizung oder  kühlung mit oder ohne Wärmerück-gewinnung.
EN 12309 gilt für Geräte mit Abgassystemen der Bauart B und Bauart C (nach EN 1749:2020) sowie für Geräte zur Installation im Freien, einschließlich Bauart A. EN 12309 ist nicht für Klimageräte anwendbar, sondern gilt ausschließlich für Geräte mit:
-   integrierten Brennern, gesteuert mittels Feuerungsautomaten;
-   geschlossenen Kühlkreisläufen, in denen das Kühlmittel nicht direkt mit dem/der zu kühlenden oder zu erwärmenden Wasser oder Luft in Berührung kommt;
-   mechanischen Einrichtungen zur Unterstützung der Verbrennungsluftzufuhr und/oder Abgasabführung.
Die vorstehenden Geräte können eine oder mehrere Primär  oder Sekundärfunktion(en) aufweisen (d. h. Wärmerückgewinnung — siehe Begriffe nach EN 12309 1:2023). Bei (aus mehreren Teilen bestehenden) Verpackungseinheiten gilt diese Norm nur, wenn diese als vollständige Baugruppe ausgelegt und geliefert werden.
Diese Europäische Norm behandelt nicht Geräte, deren Kondensator mit Luft und durch Verdampfung von zusätzlichem Wasser auf der Außenseite gekühlt wird.
Anlagen für Heizung und/oder Kühlung industrieller Prozesse fallen nicht in den Anwendungsbereich dieser Normen.
ANMERKUNG   Alle in diesem Text angegebenen Symbole werden unabhängig von dessen jeweiliger Sprache verwen¬det.
1.2   Anwendungsbereich von EN 12309 2
Dieses Dokument behandelt die Sicherheit von gasbefeuerten Sorptionswärmepumpen, wie in EN 12309 1:2023 festgelegt. Von diesem Dokument werden nur die Bauarten B12, B13, B22, B23, C12, C13, C32 und C33 sowie Installationen im Freien, einschließlich Geräten der Bauart A abgedeckt. Dieses Dokument enthält keine speziellen Anforderungen an Oberflächentemperaturen von äußeren Teilen, die insbesondere für Kinder und ältere Menschen gelten.

Appareils à sorption fonctionnant au gaz pour le chauffage et/ou le refroidissement de débit calorifique sur PCI inférieur ou égal à 70 kW - Partie 2 : Sécurité

1.1   Domaine d’application de la série de normes EN 12309
Les appareils concernés par l’EN 12309 englobent les appareils comportant une ou plusieurs des unités suivantes :
-   groupe refroidisseur à sorption fonctionnant au gaz ;
-   groupe refroidisseur/réchauffeur à sorption fonctionnant au gaz ;
-   pompe à chaleur à sorption fonctionnant au gaz.
L’EN 12309 s’applique aux appareils conçus pour être utilisés uniquement pour le chauffage et le refroidissement de locaux avec ou sans récupération de chaleur.
L’EN 12309 s’applique aux appareils comportant des systèmes d’évacuation des gaz de combustion de types B et C (conformément à l’EN 1749:2020) et aux appareils conçus pour les installations extérieures, notamment ceux du type A. L’EN 12309 ne s’applique pas aux climatiseurs, elle ne s’applique qu’aux appareils comportant :
-   des brûleurs intégrés sous le contrôle de systèmes de commande automatique ;
-   des circuits fermés de fluide frigorigène dans lesquels le fluide frigorigène n’est pas au contact de l’eau ou de l’air à refroidir ou à chauffer ;
-   des moyens mécaniques pour l’alimentation en air de combustion et/ou l’évacuation des produits de combustion.
Les appareils ci-dessus peuvent avoir une ou plusieurs fonctions principales ou additionnelles (par exemple, récupération de chaleur ; voir les définitions dans l’EN 12309-1:2023). Dans le cas des appareils fournis prêts à l’emploi (constitués de plusieurs éléments), la norme ne s’applique qu’à ceux conçus et fournis sous forme d’ensemble complet.
La présente Norme européenne ne couvre pas les appareils ayant leur condenseur refroidi par air et par évaporation d’eau d’un circuit supplémentaire externe.
Ces normes ne s’appliquent pas aux installations utilisées pour le chauffage et/ou le refroidissement des procédés industriels.
NOTE   Tous les symboles spécifiés dans le présent document sont utilisés, quelle que soit la langue utilisée.
1.2   Domaine d’application de l’EN 12309-2
Le présent document traite de la sécurité des pompes à chaleur à sorption fonctionnant au gaz, telles que définies dans l’EN 12309 1:2023. Le présent document concerne uniquement les types B12, B13, B22, B23, C12, C13, C32 et C33 ainsi que les installations extérieures, y compris les appareils du type A. Le présent document ne contient pas d’exigences spécifiques concernant les températures de surface des parties externes, en particulier pour les enfants et les personnes âgées.

Absorpcijske in adsorpcijske plinske naprave za gretje in/ali hlajenje z grelno močjo do vključno 70 kW - 2. del: Varnost

General Information

• Status: Not Published
• Publication Date: 01-Jan-2025
• ICS: 27.080 - Heat pumps
• ICS: 91.140.30 - Ventilation and air-conditioning systems
• Technical Committee: CEN/TC 299 - Gas-fired sorption appliances and domestic gas-fired washing and drying appliances
• Drafting Committee: CEN/TC 299/WG 2 - Gas-fired sorption appliances
• Current Stage: 4060 - Closure of enquiry - Enquiry
• Start Date: 07-Dec-2023
• Due Date: 08-Feb-2023
• Completion Date: 07-Dec-2023
• Directive: 2016/426 - REGULATION (EU) 2016/426 OF THE EUROPEAN PARLIAMENT AND OF THE COUNCIL of 9 March 2016 on appliances burning gaseous fuels and repealing Directive 2009/142/EC
• Directive: 813/2013 - Commission Regulation (EU) No 813/2013 of 2 August 2013 implementing Directive 2009/125/EC of the European Parliament and of the Council with regard to ecodesign requirements for space heaters and combination heaters
• Mandate: M/535 - [C(2016)2626) Standardisation request to the European standardisation organisations to draft harmonised European standards pursuant to Article 10(1) of Regulation (EU) No 1025/2012 of the European Parliament and of the Council in support of implementation of Commission Regulation (EU) No 813/2013 of 2 August 2013 implementing Directive 2009/125/EC of the European Parliament and of the Council with regard to eco-design requirements for space heaters and combination heaters and Commission Delegated Regulation (EU) No 811/2013 of 18 February 2013 supplementing Directive 2010/30/EU of the European Parliament and of the Council with regard to the energy labelling of space heaters, combination heaters, packages of space heaters, temperature control and solar device and packages of combination heater, temperature control and solar device
• Mandate: M/595 - [C(2023)4789] - Commission Implementing Decision of 20.7.2023 on a standardisation reques as regards gas appliances and fittings in support of Regulation (EU) 2016/426 of the European Parliament and of the Council
• Ref Project: oSIST prEN 12309-2:2023 - Gas-fired sorption appliances for heating and/or cooling with a net heat input not exceeding 70 kW - Part 2: Safety

Relations

• Revises: EN 12309-2:2015 - Gas-fired sorption appliances for heating and/or cooling with a net heat input not exceeding 70 kW - Part 2: Safety
• Effective Date: 28-Jan-2023

Standards Content (Sample)

SLOVENSKI STANDARD
01-oktober-2023
Absorpcijske in adsorpcijske plinske naprave za gretje in/ali hlajenje z grelno
močjo do vključno 70 kW - 2. del: Varnost
Gas-fired sorption appliances for heating and/or cooling with a net heat input not
exceeding 70 kW - Part 2: Safety
Gasbefeuerte Sorptions-Geräte für Heizung und/oder Kühlung mit einer
Nennwärmebelastung nicht über 70 kW - Teil 2: Sicherheit
Appareils à sorption fonctionnant au gaz pour le chauffage et/ou le refroidissement de
débit calorifique sur PCI inférieur à 70 kW - Partie 2 : Sécurité
Ta slovenski standard je istoveten z: prEN 12309-2
ICS:
27.080 Toplotne črpalke Heat pumps
91.140.30 Prezračevalni in klimatski Ventilation and air-
sistemi conditioning systems
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

DRAFT
EUROPEAN STANDARD
NORME EUROPÉENNE
EUROPÄISCHE NORM
September 2023
ICS 27.080; 91.140.30 Will supersede EN 12309-2:2015
English Version
Gas-fired sorption appliances for heating and/or cooling
with a net heat input not exceeding 70 kW - Part 2: Safety
Appareils à sorption fonctionnant au gaz pour le Gasbefeuerte Sorptions-Geräte für Heizung und/oder
chauffage et/ou le refroidissement de débit calorifique Kühlung mit einer Nennwärmebelastung nicht über 70
sur PCI inférieur à 70 kW - Partie 2 : Sécurité kW - Teil 2: Sicherheit
This draft European Standard is submitted to CEN members for enquiry. It has been drawn up by the Technical Committee
CEN/TC 299.
If this draft becomes a European Standard, 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.

This draft European Standard 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 CEN-CENELEC
Management Centre has the same status as the official versions.

CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,
Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway,
Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Türkiye and
United Kingdom.
Recipients of this draft are invited to submit, with their comments, notification of any relevant patent rights of which they are
aware and to provide supporting documentation.

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

CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2023 CEN All rights of exploitation in any form and by any means reserved Ref. No. prEN 12309-2:2023 E
worldwide for CEN national Members.

Contents Page
European foreword . 4
1 Scope . 5
1.1 Scope of EN 12309 series . 5
1.2 Scope of EN 12309-2 . 5
2 Normative references . 5
3 Terms and definitions . 7
4 Classification. 8
4.1 General. 8
4.2 Classification of appliances . 8
5 Construction and design requirements . 10
5.1 General. 10
5.2 Requirements for adjusting, control and safety devices . 18
5.3 Ignition devices. 21
5.4 Transportation of combustion air and/or flue gases . 21
5.5 Flame supervision system and extinction safety time T . 22
SE
5.6 Flame ignition and safety time T . 22
SA
5.7 Main flame establishment . 23
5.8 Main burner . 23
5.9 Facility for remote control. 24
5.10 Thermostats . 24
5.11 Gas pressure test points . 24
5.12 Pressure relief devices . 25
5.13 Additional requirements for appliances designed for outdoor installation . 25
5.14 Materials in contact with condensate . 26
5.15 Condensate . 26
6 Operational requirements . 27
6.1 Soundness . 27
6.2 Heat inputs . 28
6.3 Limiting temperatures . 29
6.4 Ignition, cross lighting, flame stability . 30
6.5 Combustion . 31
6.6 Safety of operation in various temperature environments . 32
6.7 Overheat cut-off device . 32
6.8 Maximum working pressure of pressurized vessels . 32
6.9 Pressure relief devices . 33
6.10 Effectiveness of the pre-purge. 33
6.11 Formation of condensate . 34
6.12 NOx . 34
6.13 Combustion products temperature . 34
7 Test methods . 34
7.1 General. 34
7.2 Construction and design . 40
7.3 Safety of operation . 40
8 Risk assessment . 68
9 Marking and instructions . 69
9.1 Appliance marking . 69
9.2 Instructions . 71
9.3 Presentation . 74
9.4 Supplementary marking and instructions in the case of appliances to be installed
outdoor or in partially protected places . 74
10 Figures . 75
Annex A (informative) Alternative method for the determination of the nominal heat input
or the maximum and minimum heat input for appliances using a pneumatic gas/air
ratio control system . 84
Annex B (informative) Calculation of conversions of NO . 86
x
Annex C (informative) Example of calculation of weighting factors NO . 87
x
Annex D (informative) Ratio of calorific value Gross to Net and Net to Gross for Gas
Families 1, 2 and 3 . 89
Annex ZA (informative) Relationship between this European Standard and the essential
requirements of Regulation (EU) 2016/426 of 9 March 2016 [OJEU L 81/99,
31.03.2016] aimed to be covered . 90
Annex ZB (informative) Relationship between this European Standard and ecodesign
requirements of Commission Regulation (EU) No 813/2013 of 2 August 2013 [OJEU L
239/136, 6.9.2013] aimed to be covered . 93
Bibliography . 94

European foreword
This document (prEN 12309-2:2023) has been prepared by Technical Committee CEN/TC 299 “Gas-
fired sorption appliances, indirect fired sorption appliances, gas-fired endothermic engine heat pumps
and domestic gas-fired washing and drying appliances”, the secretariat of which is held by UNI.
This document is currently submitted to the CEN Enquiry.
This document will supersede EN 12309-2:2015.
This document includes the following significant technical changes with respect to EN 12309-2:2015:
— Harmonization to Regulation (EU) 2016/426 (see Annex ZA).
— Clarification of the scope of this part 2 to EN 12309.
— Minimum quality properties of materials (see 5.1.2).
— Minimum dimensions for gas / air ratio control tubes (see 5.1.9.2).
— Minimum IP protection degree (see 5.1.12).
— New requirements for pressurized parts of the appliance (see 5.1.15).
— New requirements for overheat cut-off devices (see 5.10.2).
— New maximum air leakage rate for gas circuits (see 6.1.2).
— New requirements and testing method for maximum component temperature (see 6.3.4 and
7.3.3.5).
— Clarification of the generic test conditions (Tables 5, 6 and 7).
— New tolerance for NOx emissions (see 7.1.8).
— New safety tests in case of operations at the limit of the temperature operating range (see 7.3.6.2).
— New water temperature for NOx measurements (see 7.3.11 and Table 13).
— New extreme conditions for checking of the ignition safety time (see Table 14).
This document has been prepared under a standardization request addressed to CEN by the European
Commission. The Standing Committee of the E
...