Domestic and non-domestic gas-fired forced convection air heaters for space heating not exceeding a net heat input of 300 kW

This European Standard specifies the requirements and test methods for the safety and efficiency of gas fired air heaters with or without a fan to assist the transportation of combustion air and/or flue gases, hereafter referred to as "appliances".
This European Standard applies to Type A2, A3, B11, B11AS, B11BS, B12, B12AS, B12BS, B13, B13AS, B13BS, B14, B14AS, B14BS, B22, B23, B41, B41AS, B41BS, B42, B42AS, B42BS, B43, B43AS, B43BS, B44, B44AS, B44BS, B52, B53, C11, C12, C13, C21, C31, C32, C33, C41, C62 and C63 appliances with an input not exceeding 300 kW (net cv basis), intended for use in single unit residential dwellings and in other than single unit residential units. Provision of the heated air may be by means of ducting.
This European Standard does not apply to:
a)   dual purpose air conditioning appliances (heating and cooling);
b)   appliances where the air is heated by an intermediate fluid;
c)   portable or transportable forced convection appliances;
d)   domestic appliances for outdoor installation;
e)   appliances fitted with manual or automatic means of adjusting  the combustion products evacuation  by means of flue dampers;
f)   appliances having multiple heating units with a single draught diverter;
g)   appliances fitted with more than one flue outlet;
h)   appliances fitted with gas boosters;
i)   domestic appliances of type C22, C23, C42, C43, C52 and C53;
j)   C21 and C41 appliances for 3rd family gases;
NOTE For C41 appliances, see all requirements and test methods that are valid for C21 appliances, unless otherwise stated.
This European Standard is applicable to appliances which are intended to be type tested. It also includes requirements concerning the evaluation of conformity, including factory production control, but these requirements only apply to POCEDs and their associated terminals.

Häusliche und nicht-häusliche gasbefeuerte Warmlufterzeuger mit erzwungener Konvektion zur Raumbeheizung deren Nennwärmebelastung 300 kW nicht übersteigt

Dieses Dokument legt die Anforderungen und Prüfverfahren für die Sicherheit und den Wirkungsgrad von gasbefeuerten Warmlufterzeugern mit oder ohne Gebläse zur Unterstützung des Transports von Verbrennungsluft und/oder Abgasen fest, die im weiteren Verlauf als „Geräte“ bezeichnet werden.
Dieses Dokument ist darüber hinaus auch auf Warmlufterzeuger mit Gebläsebrennern anwendbar.
Dieses Dokument gilt für Geräte des Typs A2 und A3 mit einer Leistungsaufnahme von bis zu 300 kW (Netto-CV Basis) für den nicht-häuslichen Gebrauch.
Dieses Dokument gilt außerdem für Geräte des Typs B11, B11AS, B11BS, B12, B12AS, B12BS, B13, B13AS, B13BS, B14, B14AS, B14BS, B22, B23, B41, B41AS, B41BS, B42, B42AS, B42BS, B43, B43AS, B43BS, B44, B44AS, B44BS, B52, B53, C11, C12, C13, C21, C31, C32, C33, C41, C62 und C63 mit einer Leistungsaufnahme von bis zu 300 kW (Netto-CV Basis) für den häuslichen und nicht-häuslichen Gebrauch.
Die Zufuhr erwärmter Luft darf über Kanalnetze erfolgen.
Dieses Dokument gilt nicht für:
a) Klimaanlagen mit Doppelfunktion (Heizen und Kühlen);
b) Geräte, bei denen die Luft über eine Zwischenflüssigkeit erhitzt wird;
c) tragbare oder transportable Zwangskonvektionsgeräte;
d) Geräte, die mit manuellen oder automatischen Mitteln zur Einstellung der Ableitung von Verbrennungsprodukten durch Abgasklappen ausgestattet sind;
e) aus mehreren Heizeinheiten bestehende Geräte mit einer einzelnen Strömungssicherung;
f) mit einem oder mehreren Abgasaustritten ausgestattete Geräte;
g) mit Gas-Boostern ausgestattete Geräte;
h) C21- und C41-Geräte für die dritte Gasfamilie.
ANMERKUNG   Sofern nicht anders angegeben, sind für C41-Geräte die für C21-Geräte geltenden Anforderungen und Prüfverfahren zu beachten.
Dieses Dokument soll keine Geräte umfassen, bei denen beabsichtigt ist, sie an ein Gasnetz anzuschließen, bei welchem die Beschaffenheit des verteilten Gases über die Lebensdauer des Geräts wahrscheinlich stark schwankt.
Dieses Dokument gilt für alle Geräte, die für eine Typprüfung vorgesehen sind.

Générateurs d'air chaud à convection forcée utilisant les combustibles gazeux pour le chauffage de locaux à usage domestique et non domestique, de débit calorifique inférieur ou égal à 300 kW, sur pouvoir calorifique inférieur (PCI)

La présente Norme européenne définit les exigences et les méthodes d’essai relatives à la sécurité et au rendement des générateurs d’air chaud utilisant les combustibles gazeux, avec ou sans ventilateur pour assister le transport de l’air comburant et/ou des produits de combustion, appelés ci-après « appareils ».
La présente Norme européenne s’applique aux appareils de types A2, A3, B11, B11AS, B11BS, B12, B12AS, B12BS, B13, B13AS, B13BS, B14, B14AS, B14BS, B22, B23, B41, B41AS, B41BS, B42, B42AS, B42BS, B43, B43AS, B43BS, B44, B44AS, B44BS, B52, B53, C11, C12, C13, C21, C31, C32, C33, C41, C62 et C63 dont le débit est inférieur ou égal à 300 kW (sur PCI), destinés à être utilisés dans des locaux à usage d'habitation individuelle et autres. La distribution de l'air chaud peut se faire par des conduits.
La présente Norme européenne ne s’applique pas :
a)   aux appareils de climatisation à usage double (chauffage et refroidissement) ;
b)   aux appareils de chauffage de l'air par un fluide caloporteur intermédiaire ;
c)   aux appareils à convection forcée portatifs ou transportables ;
d)   aux appareils domestiques destinés à être installés à l'extérieur ;
e)   aux appareils dans lesquels le réglage de l'évacuation des produits de combustion à l’aide de clapets de fumée se fait par le biais d'un dispositif manuel ou automatique ;
f)   aux appareils comportant plusieurs générateurs de chaleur associés à un seul coupe tirage antirefouleur ;
g)   aux appareils comportant plusieurs buses d'évacuation des produits de combustion ;
h)   aux appareils comportant des surpresseurs pour le gaz ;
i)   aux appareils domestiques de types C22, C23, C42, C43, C52 et C53 ;
j)   aux appareils de types C21 et C41 utilisant les gaz de la troisième famille.
NOTE   Pour les appareils de type C41, voir l'ensemble des exigences et des méthodes d'essai applicables aux appareils de type C21, sauf indication contraire.
La présente Norme européenne s’applique aux appareils destinés à être soumis à des essais de type. Elle comprend également des exigences relatives à l'évaluation de la conformité, y compris le contrôle de fabrication en usine, ces dernières exigences s’appliquant toutefois exclusivement aux POCED et aux terminaux associés.

Plinski grelniki zraka s prisilno konvekcijo za gretje stanovanjskih in nestanovanjskih prostorov z nazivno močjo do vključno 300 kW

Ta evropski standard določa zahteve in preskusne metode za varnost ter učinkovitost plinskih grelnikov zraka z ventilatorjem ali brez njega za pomoč pri prenosu zgorevalnega zraka in/ali dimnih plinov (v nadaljnjem besedilu »aparati«).  Ta evropski standard se uporablja za aparate tipov A2, A3, B11, B11AS, B11BS, B12, B12AS, B12BS, B13, B13AS, B13BS, B14, B14AS, B14BS, B22, B23, B41, B41AS, B41BS, B42, B42AS, B42BS, B43, B43AS, B43BS, B44, B44AS, B44BS, B52, B53, C11, C12, C13, C21, C31, C32, C33, C41, C62 in C63 z nazivno močjo do vključno 300 kW (osnova z neto kalorično vrednostjo), namenjene za uporabo v enostanovanjskih enotah in drugih (večstanovanjskih) enotah. Ogrevani zrak se lahko dovaja prek cevi. Ta evropski standard se ne uporablja za:
a) dvonamenske klimatske naprave (ogrevanje in hlajenje);
b) naprave, pri katerih zrak segreva vmesna tekočina;
c) prenosne ali premične naprave s prisilno konvekcijo;
d) gospodinjske aparate za zunanjo namestitev;
e) naprave, opremljene z ročnimi ali avtomatskimi sredstvi za prilagajanje odvajanja produktov zgorevanja z dimniško loputo;
f) naprave, ki imajo več grelnih enot z enim preusmerjevalnikom vleka;
g) naprave, opremljene z več kot eno dimniško izstopno odprtino;
h) naprave, opremljene s plinskimi ojačevalniki;
i) gospodinjske aparate tipa C22, C23, C42, C43, C52 in C53;
j) aparate C21 in C41 za pline 3. družine;
OPOMBA: Za aparate C41 glej vse zahteve in preskusne metode, ki veljajo za naprave C21, razen če je navedeno drugače. Ta evropski standard se uporablja za aparate, predvidene za tipski preskus. Vključuje tudi zahteve v zvezi z ocenjevanjem skladnosti, vključno z nadzorom tovarniške proizvodnje, vendar te zahteve veljajo samo za sisteme POCED in z njimi povezane terminale.

General Information

Status
Published
Public Enquiry End Date
31-Mar-2017
Publication Date
09-Dec-2019
Current Stage
6060 - National Implementation/Publication (Adopted Project)
Start Date
04-Dec-2019
Due Date
08-Feb-2020
Completion Date
10-Dec-2019

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SLOVENSKI STANDARD
SIST EN 17082:2020
01-januar-2020
Nadomešča:
SIST EN 1020:2010
SIST EN 1196:2012
SIST EN 1319:2010
SIST EN 525:2009
SIST EN 621:2010
SIST EN 778:2010
Plinski grelniki zraka s prisilno konvekcijo za gretje stanovanjskih in
nestanovanjskih prostorov z nazivno močjo do vključno 300 kW

Domestic and non-domestic gas-fired forced convection air heaters for space heating not

exceeding a net heat input of 300 kW
Häusliche und nicht-häusliche gasbefeuerte Warmlufterzeuger mit erzwungener
Konvektion zur Raumbeheizung deren Nennwärmebelastung 300 kW nicht übersteigt

Générateurs d'air chaud à convection forcée utilisant les combustibles gazeux pour le

chauffage de locaux à usage domestique et non domestique, de débit calorifique
inférieur ou égal à 300 kW, sur pouvoir calorifique inférieur (PCI)
Ta slovenski standard je istoveten z: EN 17082:2019
ICS:
97.100.20 Plinski grelniki Gas heaters
SIST EN 17082:2020 en,fr,de

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

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SIST EN 17082:2020
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SIST EN 17082:2020
EN 17082
EUROPEAN STANDARD
NORME EUROPÉENNE
October 2019
EUROPÄISCHE NORM
ICS 97.100.20 Supersedes EN 1020:2009, EN 1196:2011, EN
1319:2009, EN 525:2009, EN 621:2009, EN 778:2009
English Version
Domestic and non-domestic gas-fired forced convection air
heaters for space heating not exceeding a net heat input of
300 kW

Générateurs d'air chaud à convection forcée utilisant Häusliche und nicht-häusliche gasbefeuerte

les combustibles gazeux pour le chauffage de locaux à Warmlufterzeuger mit erzwungener Konvektion zur

usage domestique et non domestique, de débit Raumbeheizung deren Nennwärmebelastung 300 kW

calorifique inférieur ou égal à 300 kW, sur pouvoir nicht übersteigt
calorifique inférieur (PCI)
This European Standard was approved by CEN on 5 June 2019.

CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this

European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references

concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN

member.

This European Standard exists in three official versions (English, French, German). A version in any other language made by

translation under the responsibility of a CEN member into its own language and notified to the 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, Turkey and

United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
C O M I T É E U R O P É E N D E N O R M A L I S A T I O N
E U R O P Ä I S C H E S K O M I T E E F Ü R N O R M U N G
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels

© 2019 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 17082:2019 E

worldwide for CEN national Members.
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SIST EN 17082:2020
EN 17082:2019 (E)
Contents Page

European foreword ......................................................................................................................................................... 3

1 Scope ............................................................................................................................................................................. 4

2 Normative references ............................................................................................................................................ 4

3 Terms and definitions ............................................................................................................................................ 6

4 Classification ........................................................................................................................................................... 23

5 Construction and design requirement ......................................................................................................... 24

6 Operational requirements ................................................................................................................................. 59

7 Efficiency ................................................................................................................................................................ 142

8 Risk assessment .................................................................................................................................................. 148

9 Marking and instructions ................................................................................................................................ 148

Annex A (informative) National situations ...................................................................................................... 160

Annex B (normative) Equivalence rules ........................................................................................................... 163

Annex C (informative) Identification of gas types in use in various countries ................................. 165

Annex D (normative) Mode of air supply and evacuation of combustion products ....................... 167

Annex E (informative) NOx Measurements ..................................................................................................... 171

Annex F (informative) Derivation of Thermal Efficiency Equations ..................................................... 172

Annex G (informative) Facilities for commissioning and testing (see 5.12) ..................................... 174

Annex H (normative) Requirements in EN 17082 which relate to the design and construction of

forced draught burners covered in EN 676:2003+A2:2008 ...................................................................... 176

Annex I (normative) Tolerances of measurements ...................................................................................... 178

Annex J (informative) Guidance for limitations of application of direct-fired air heaters in

buildings .......................................................................................................................................................................... 181

Annex K (normative) Flue test probes .............................................................................................................. 186

Annex ZA (informative) Relationship between this European Standard and the ecodesign

requirements of Commission Regulation (EU) No 2016/2281 aimed to be covered ..................... 192

Bibliography .................................................................................................................................................................. 193

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SIST EN 17082:2020
EN 17082:2019 (E)
European foreword

This document (EN 17082:2019) has been prepared by Technical Committee CEN/TC 180

“Decentralized gas heating”, the secretariat of which is held by AFNOR.

This European Standard shall be given the status of a national standard, either by publication of

an identical text or by endorsement, at the latest by April 2020, and conflicting national

standards shall be withdrawn at the latest by April 2020.

Attention is drawn to the possibility that some of the elements of this document may be the

subject of patent rights. CEN shall not be held responsible for identifying any or all such patent

rights.
This document supersedes EN 525:2009, EN 621:2009, EN 778:2009, EN 1196:2011, EN
1020:2009 and EN 1319:2009.

This document covers the safety and energy efficiency requirements of domestic and non-

domestic warm air heaters previously covered by EN 525:2009, EN 621:2009, EN 778:2009, EN

1196:2011, EN 1020:2009 and EN 1319:2009. Additional technical requirements have been

made compared to the superseded documents to take account the following:

— Specific requirements on risk analysis due to differences in the Essential Requirements for

the Gas Appliance Regulation compared to those of the Gas Appliance Directive;

— Additional requirements on appliance efficiency, including the need to calculate the

seasonal efficiency related to the requirements of the Eco-Design Regulation.

Changes have also been made to the document structure to improve its ease of use, for example

requirements and associated test methods have been moved into the same clause.

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.

According to the CEN-CENELEC Internal Regulations, the national standards organisations of

the following countries are bound to implement this European Standard: 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, Turkey and the United Kingdom.
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SIST EN 17082:2020
EN 17082:2019 (E)
1 Scope

This document specifies the requirements and test methods for the safety and efficiency of gas

fired air heaters with or without a fan to assist the transportation of combustion air and/or flue

gases, hereafter referred to as "appliances".
This document also applies to warm air heaters having forced draught burners.

This document applies to Type A , A appliances, with an input not exceeding 300 kW (net CV

2 3
basis), intended for non-domestic use.
This document also applies to Type B , B , B , B , B , B , B , B , B , B , B ,
11 11AS 11BS 12 12AS 12BS 13 13AS 13BS 14 14AS
B , B , B , B , B , B , B , B , B , B , B , B , B , B , B , B , B , C , C , C ,
14BS 22 23 41 41AS 41BS 42 42AS 42BS 43 43AS 43BS 44 44AS 44BS 52 53 11 12 13

C , C , C , C , C , C and C appliances with an input not exceeding 300 kW (net CV basis),

21 31 32 33 41 62 63
intended for domestic and non-domestic use.
Provision of the heated air may be by means of ducting.
This document does not apply to:
a) dual purpose air conditioning appliances (heating and cooling);
b) appliances where the air is heated by an intermediate fluid;
c) portable or transportable forced convection appliances;

d) appliances fitted with manual or automatic means of adjusting the combustion products

evacuation by means of flue dampers;
e) appliances having multiple heating units with a single draught diverter;
f) appliances fitted with more than one flue outlet;
g) appliances fitted with gas boosters;
h) C and C appliances for 3rd family gases.
21 41

NOTE For C appliances, see all requirements and test methods that are valid for C appliances,

41 21
unless otherwise stated.

This document is not intended to cover appliances projected 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.
This document is applicable to appliances which are intended to be type tested.
2 Normative references

The following documents are referred to in the text in such a way that some or all of their

content constitutes requirements of this document. For dated references, only the edition cited

applies. For undated references, the latest edition of the referenced document (including any

amendments) applies.

EN 88-1:2011+A1 2016, Pressure regulators and associated safety devices for gas appliances —

Part 1: Pressure regulators for inlet pressures up to and including 50 kPa

EN 125:2010+A1 2015, Flame supervision devices for gas burning appliances — Thermoelectric

flame supervision devices
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SIST EN 17082:2020
EN 17082:2019 (E)
EN 126:2012, Multifunctional controls for gas burning appliances

EN 161:2011+A3:2013, Automatic shut-off valves for gas burners and gas appliances

EN 257:2010, Mechanical thermostats for gas-burning appliances

EN 298:2012, Automatic burner control systems for burners and appliances burning gaseous or

liquid fuels
EN 437:2003+A1:2009, Test gases — Test pressures — Appliance categories
EN 676:2003+A2:2008, Automatic forced draught burners for gaseous fuels

EN 682:2002, Elastomeric seals — Materials requirements for seals used in pipes and fittings

carrying gas and hydrocarbon fluids
EN 1859:2009+A1:2013, Chimneys— Metal chimneys — Test methods

EN 10226-2:2005, Pipe threads where pressure tight joints are made on the threads — Part 2:

Taper external threads and taper internal threads — Dimensions, tolerances and designation

EN 12067-2:2004, Gas/air ratio controls for gas burners and gas burning appliances — Part 2:

Electronic types
EN 50090 (all parts), Home and Building Electronic Systems (HBES)

EN 60335-1:2012, Household and similar electrical appliances — Safety — Part 1: General

requirements (IEC 60335-1:2010, modified)

EN 60335-2-102:2016, Household and similar electrical appliances — Safety - Part 2-102:

Particular requirements for gas, oil and solid-fuel burning appliances having electrical connections

(IEC 60335-2-102:2004, modified)

EN 60529:1991, Degrees of protection provided by enclosures (IP code) (IEC 60529:1989)

EN 60584-1:2013, Thermocouples — Part 1: EMF specifications and tolerances (IEC 60584-

1:2013)

EN 60730-1:2016, Automatic electrical controls — Part 1: General requirements (IEC 60730-

1:2013, modified)

EN 60730-2-9:2010, Automatic electrical controls for household and similar use — Part 2-9:

Particular requirements for temperature sensing controls (IEC 60730-2-9:2008, modified)

EN 61058-1:2002, Switches for appliances — Part 1: General requirements (IEC 61058-1:2000,

modified)

EN 61558-2-6:2009, Safety of transformers, reactors, power supply units and similar products for

supply voltages up to 1 100 V — Part 2-6: Particular requirements and tests for safety isolating

transformers and power supply units incorporating safety isolating transformers (IEC 61558-2-

6:2009)

EN 61558-2-16:2009, Safety of transformers, reactors, power supply units and similar products

for supply voltages up to 1 100 V — Part 2-16: Particular requirements and tests for switch mode

power supply units and transformers for switch mode power supply units (IEC 61558-2-16:2009)

EN ISO 228-1:2003, Pipe threads where pressure-tight joints are not made on the threads — Part

1: Dimensions, tolerances and designation (ISO 228-1:2000)

EN ISO 1182:2010, Reaction to fire tests for products — Non-combustibility test (ISO 1182:2010)

EN ISO 3166-1:2014, Codes for the representation of names of countries and their subdivisions —

Part 1: Country codes (ISO 3166-1:2013)
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SIST EN 17082:2020
EN 17082:2019 (E)

EN ISO 5167-1:2003, Measurement of fluid flow by means of pressure differential devices inserted

in circular cross-section conduits running full — Part 1: General principles and requirements (ISO

5167-1:2003)

EN ISO 5167-2:2003, Measurement of fluid flow by means of pressure differential devices inserted

in circular cross-section conduits running full — Part 2: Orifice plates (ISO 5167-2:2003)

ISO 3966:2008, Measurement of fluid flow in closed conduits – Velocity area method using Pitot

static tubes

ISO 7005-1:2011, Pipe flanges — Part 1: Steel flanges for industrial and general service piping

systems
ISO 7005-2:1988, Metallic flanges — Part 2: Cast iron flanges
ISO 7005-3:1988, Metallic flanges — Part 3: Copper alloy and composite flanges
3 Terms and definitions
3.1 Terms and definitions
For the purposes of this document, the following terms and definitions apply.

ISO and IEC maintain terminological databases for use in standardization at the following

addresses:
— IEC Electropedia: available at http://www.electropedia.org/
— ISO Online browsing platform: available at http://www.iso.org/obp
3.1.1 Appliance and its constituent components
3.1.1.1
air heater

appliance designed for the heating by means of warm air and possibly ventilation of a building

3.1.1.2
forced convection air heater

appliance designed to provide space heating from a central source by distributing heated air, by

means of an air moving device, either through ducting or directly into the heated space

3.1.1.3
direct fired forced convection air heater

forced convection air heater in which the products of combustion mix with the heated air being

supplied to the space
3.1.1.4
high temperature direct fired forced convection air heater

direct fired forced convection air heater designed to operate with an air temperature rise

through the appliance greater than 60 K
3.1.1.5
low temperature direct fired forced convection air heater

direct fired forced convection air heater designed to operate with a maximum air temperature

rise through the appliance of 60 K or less
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SIST EN 17082:2020
EN 17082:2019 (E)
3.1.1.6
appliance with facility for downstream re circulation of air

appliance in which a proportion of the heated air can be returned to the appliance at a point

downstream of the burner and re distributed
3.1.1.7
appliance with facility for upstream re circulation of air

appliance in which a proportion of the heated air can be returned to the appliance at a point

upstream of the burner and re distributed
3.1.1.8
profile plates

fixed or adjustable plates fitted for the purpose of setting the air flow velocity across the burner

3.1.1.9
gas inlet connection
part of the appliance intended to be connected to the gas supply
3.1.1.10
mechanical joint

mechanical means of ensuring the soundness of an assembly of several (generally metallic)

parts without the use of liquids (e.g. pastes and tapes)

EXAMPLES Metal to metal joints; conical joints; toroidal sealing rings (“O” rings); flat joints.

3.1.1.11
gas circuit

part of the appliance/burner that conveys or contains the gas between the appliance/burner

gas inlet connection and the burner(s)
3.1.1.12
restrictor

device with an orifice, which is placed in the gas circuit so as to create a pressure drop and thus

reduce the gas pressure at the burner to a predetermined value for a given supply pressure and

rate
3.1.1.13
gas rate adjuster

component allowing the gas rate of the burner to be set to a predetermined value according to

the supply conditions

Note 1 to entry: Adjustment may be progressive (screw adjuster) or in discrete steps (by changing

restrictors).

Note 2 to entry: The adjusting screw of an adjustable regulator is regarded as a gas rate adjuster.

Note 3 to entry: The action of adjusting this device is called "adjusting the gas rate".

Note 4 to entry: A factory sealed gas rate adjuster is considered to be non-existent.

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SIST EN 17082:2020
EN 17082:2019 (E)
3.1.1.14
setting an adjuster
immobilizing of an adjuster after the gas rate has been adjusted
Note 1 to entry: By means such as a screw
3.1.1.15
sealing an adjuster

arrangement made to make evident any attempt to change its adjustment putting an adjuster

or a control out of service
Note 1 to entry: Breakage of a device or of a sealing material.
3.1.1.16
injector
component that admits the gas into a burner
3.1.1.17
main burner
burner that is intended to assure the thermal function of the appliance
3.1.1.18
forced draught burner
burner in which the combustion air is introduced by means of a fan
3.1.1.19
ignition device

any means (e.g. flame, electrical ignition device or other device) used to ignite the gas at the

ignition burner or at the main burner
Note 1 to entry: This device can operate intermittently or permanently.
3.1.1.20
ignition burner
burner whose flame is intended to ignite another burner
3.1.1.21
permanent ignition burner

ignition burner that operates continuously throughout the whole period that the appliance is in

use
3.1.1.22
intermittent ignition burner

ignition burner that is ignited before and extinguished at the same time as the main burner

by means such as a screw.
breakage of a device or of a sealing material.
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SIST EN 17082:2020
EN 17082:2019 (E)
3.1.1.23
alternating ignition burner

ignition burner that is extinguished as soon as ignition of the main burner is effected, and that

re-ignites at the main burner flame just before the latter goes out
3.1.1.24
interrupted ignition burner
ignition burner that operates only during the ignition sequence
3.1.1.25
aeration adjuster

device enabling the combustion air flow rate to be set at the desired value according to the

supply conditions

Note 1 to entry: The action of adjusting this device is called "adjusting the aeration".

3.1.1.26
combustion circuit
circuit from the air inlet to the combustion products outlet of the appliance

Note 1 to entry: This will include the combustion chamber and heat exchanger and depending on the

type includes the air supply duct, the combustion products evacuation duct, the fitting piece, the

connection to the terminal, the inlet terminal, the outlet terminal.
3.1.1.27
air supply duct
means of transporting combustion air to the burner
3.1.1.28
combustion chamber
enclosure inside which combustion of the air-gas mixture takes place
3.1.1.29
flue outlet

part of a Type B appliance that connects with a flue to evacuate the products of combustion

3.1.1.30
draught diverter

device placed in the combustion circuit to reduce the influence of flue-pull and that of down-

draught on the burner performance and combustion
3.1.1.31
flue damper

manual or automatic device placed in the POCED intended to restrict or fully close off the

passageways for the evacuation of products of combustion when the appliance is not in use

3.1.1.32
flue terminal

device fitted at the end of the duct system which enables the discharge of flue gases and may, at

the same time, allow entry of combustion air
3.1.1.33
C flue terminal
terminal which is specially approved for Type C appliances
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SIST EN 17082:2020
EN 17082:2019 (E)
3.1.1.34
terminal guard
device that protects the terminal from mechanical damage from outside influences
3.1.1.35
flue adaptor box
means of adapting the appliance for connection to different duct systems
EXAMPLE From concentric to separate ducts.
3.1.1.36
POCED

combustion products evacuation duct that is intended to be used only with a specific

appliance/system, this duct being either supplied with the appliance/system or specified in the

manufacturer's instructions
3.1.1.37
fully premixed burner

pre-aerated burner system in which gas is mixed in a pre-determined and adjustable ratio with

all of the air necessary for combustion
3.1.1.38
gas/air ratio control

device that automatically adapts the combustion air rate to the gas rate and vice versa

3.1.2 Adjustment, control and safety devices
3.1.2.1
range rating device

component on the appliance intended to be used by the installer to adjust the heat input of the

appliance, within a range of heat inputs stated in the installation instructions, to suit the actual

heat requirements of the installation

Note 1 to entry: This adjustment may be progressive (e.g. by use of a screw adjuster) or in discrete steps

(e.g. by changing restrictors).
3.1.2.2
automatic burner control system

system comprising a programming unit and all the elements of a flame detector device

Note 1 to entry: The various functions of an automatic burner control system may be in one or more

housings.
[SOURCE EN 298:2012]
3.1.2.3
programming unit

device which executes the program reacting to signals from control and safety devices, gives

control commands, controls the start-up sequence, supervises the burner operation and causes

controlled shut-down, and if necessary safety shut-down and lock-out

Note 1 to entry: The programming unit follows a predetermined sequence of actions and always operates

in conjunction with a flame detector device.
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SIST EN 17082:2020
EN 17082:2019 (E)
[SOURCE EN 298:2012, Modified]
3.1.2.4
flame detector device
device by which the presence of a flame is detected and signalled

Note 1 to entry: A flame detector device can consist of a flame sensor, an amplifier and a relay for signal

transmission. These parts, with the possible exception of the actual flame sensor, may be assembled in a

single housing for use in conjunction with a programming unit.
[SOURCE EN 298:2012]
3.1.2.5
flame signal

signal given by the flame detector device, normally when the flame sensor senses a flame

[SOURCE EN 298:2012, modified]
3.1.2.6
pressure regulator

device which maintains the outlet pressure constant independent of the variations in inlet

pressure and/or flow rate within defined limits
3.1.2.7
adjustable pressure regulator
regulator provided with means for changing the outlet pressure setting
3.1.2.8
volume regulator

device which maintains the gas rate constant within a given tolerance, independent of the

upstream pressure
3.1.2.9
flame supervision device

device that, in response to a signal from the flame detector, keeps the gas supply open and shuts

it off in the absence of the supervised flame
3.1.2.10
automatic shut-off valve

valve designed to open when energized and to close automatically when de energized

3.1.2.11
control thermostat / room temperature control thermostat

device controlling the operation of the appliance (by on/off, high/low or modulating control)

and enabling the room temperature to be kept automatically, within a given tolerance, at a

predetermined value
3.1.2.12
overheat cut-off device

device that causes safety shutdown and non-volatile lockout at a pre-set value before the

appliance is damaged and/or before safety is put in question
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SIST EN 17082:2020
EN 17082:2019 (E)
3.1.2.13
overheat limit device

device which is intended to keep a temperature below one particular value during abnormal

operation conditions and which has either no provision for setting or is provided with a

maximum temperature limit stop

Note 1 to entry: The overheat limit device can be of the automatic or the manual reset type.

3.1.2.14
fan control / fan delay control

control that starts and/or stops the air delivery fan when the temperature of the delivered air

reaches certain predetermined values
3.1.2.15
temperature sensing element / temperature sensor

component that detects the temperature of the environment to be supervised or controlled

3.1.2.16
combustion products discharge safety system

system that automatically shuts off the gas supply to the main burner, and perhaps to the

ignition burner, when spillage of combustion products from the draught diverter is detected

3.1.2.17
atmosphere sensing device

device designed to shut off the gas supply before the concentration of combustion products of

the surrounding atmosphere reaches a set value
3.1.2.18
modulating control

automatic control by which the heat input of the appliance can be varied in a continuous

manner between the nominal heat input and a minimum value
3.1.2.19
high/low control

automatic control which permits an appliance to operate either at the nominal heat input or at a

fixed reduced heat input
3.1.2.20
vent valve

normally open automatic valve fitted between two automatic shut off valves and intended to

vent any small leakages of gas
3.1.2.21
air flow proving device

device which monitors and proves the existence of an adequate flow of air for combustion and,

where appropriate, for dilution
3.1.2.22
closed position indicator switch

switch fitted to an automatic shut-off valve which indicates when the closure member is in the

closed position
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SIST EN 17082:2020
EN 17082:2019 (E)
3.1.2.23
proof of closure switch

switch fitted to an automatic shut-off valve with mechanical overtravel which indicates when

the closure member is in the closed position
3.1.2.24
valve proving system

system to check the effective closure of the start gas or main gas safety shut off valves, and

which is capable of detecting small gas leakage rates (e.g. by means of a pressure or vacuum

proving system)
3.1.3 Operation of the appliance
3.1.3.1
volume flow rate
volume of gas consumed by the appliance in unit time during continuous operation

Note 1 to entry The volume flow rate is expressed in cubic metres per hour (m /h), litres per minute

3 3

(l/min), cubic decimetres per hour (dm /h) or cubic decimetres per second (dm /s).

[SOURCE EN 437:2003+A1:2009]
3.1.3.2
mass flow rate
mass of gas consumed by the appliance in unit time during continuous operation
Note 1 to entry: The mass
...

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