SIST EN 416:2020
(Main)Gas-fired overhead radiant tube heaters and radiant tube heater systems for non-domestic use - Safety and energy efficiency
Gas-fired overhead radiant tube heaters and radiant tube heater systems for non-domestic use - Safety and energy efficiency
This European Standard specifies the requirements and test methods for the construction, safety, classification, marking and efficiency of non-domestic gas-fired overhead radiant tube heaters incorporating a single burner and multiple burner systems (referred to in the body of the text as the “system”) with each burner unit under the control of an automatic burner control system.
For radiant tube heaters incorporating a single burner, this standard is applicable to Type A2, A3, B12, B13, B22, B23, B42, B43, B52, B53, C12, C13, C32, C33, C52 and C53 appliances intended for use in other than domestic dwellings, in which the supply of combustion air and/or the evacuation of the products of combustion is achieved by mechanical means located upstream of the draught diverter, if provided.
For radiant tube heater systems incorporating multiple tube heater segments, this standard is applicable to Type B52, B52x, B53 and B53x systems intended for use in other than domestic dwellings, in which the supply of combustion air and/or the evacuation of the products of combustion is achieved by mechanical means.
This standard also includes appliances incorporating a secondary heat exchanger in the flue system.
This standard is not applicable to:
a) appliances designed for use in domestic dwelling;
b) outdoor appliances;
c) appliances where the heat input of any individual burner unit is in excess of 120 kW (based on the net calorific value of the appropriate reference test gas);
d) appliances having combustion products evacuation ducts that are non-metallic in the flue system - except ducts downstream of a possible additional condensing exhaust gas heat exchanger.
In addition, for heater systems incorporating multiple tube heaters this standard is not applicable to:
e) appliances and systems that are designed for continuous condensation within the flue system under normal operating conditions - except downstream a possible additional exhaust gas heat exchanger.
This standard is applicable to systems which are intended to be type tested.
Gasbefeuerte Dunkelstrahler und Dunkelstrahlersysteme für gewerbliche und industrielle Anwendungen - Sicherheit und Energieeffizienz
Dieses Dokument legt die Anforderungen und Prüfverfahren für den Bau, die Sicherheit, die Klassifizierung, die Kennzeichnung und die Effizienz von gasbefeuerten Dunkelstrahlern mit einem Brenner oder Dunkelstrahler-Systemen mit mehreren Brennern für gewerbliche und industrielle Anwendungen (im Haupttext als "Geräte" bzw. „Systeme“ bezeichnet), bei denen jede Brennereinheit durch einen Gasfeuerungsautomaten gesteuert wird, fest.
Für Dunkelstrahler mit einem einzelnen Brenner gilt diese Norm für die Gerätetypen A2, A3, B12, B13, B22, B23, B42, B43, B52, B53, C12, C13, C32, C33, C52 und C53 für den Einsatz in gewerblichen und industriellen Gebäuden, in denen die Versorgung mit Verbrennungsluft und/oder die Ableitung der Verbrennungsprodukte durch einer Strömungssicherung (sofern vorhanden) vorgelagerte mechanische Mittel erfolgt.
Dieses Dokument gilt für Dunkelstrahlersysteme mit mehreren Dunkelstrahlersegmenten für die Gerätetypen B52, B52x, B53 und B53x für den Einsatz in gewerblichen und industriellen Gebäuden, in denen die Versorgung mit Verbrennungsluft und/oder die Ableitung der Verbrennungsprodukte durch mechanische Mittel erfolgt.
Dieses Dokument gilt außerdem für Geräte, die mit einem sekundären Abgaswärmetauscher im Abgassystem ausgestattet sind.
Dieses Dokument gilt nicht für:
a) Geräte, die für eine Verwendung in Wohnungen gedacht sind;
b) Geräte, die für eine Verwendung im Freien gedacht sind;
c) Geräte mit einer Wärmebelastung der einzelnen Brennereinheit von mehr als 120 kW (bezogen auf den Brennwert des jeweiligen Normprüfgases);
d) Geräte mit nichtmetallischen Abgasabführungsleitungen im Abgasabführungssystem – außer Leitungen hinter einem möglichen zusätzlichen kondensierenden Abgaswärmetauscher.
Darüber hinaus gilt dieses Dokument im Fall von Dunkelstrahlersystemen mit mehreren Dunkelstrahlersegmenten nicht für:
e) Geräte und Systeme, die für eine dauerhafte Kondensation im Abgassystem unter Normalbetriebsbedingungen ausgelegt sind – außer hinter einem möglichen zusätzlichen Abgaswärmetauscher.
Dieses Dokument ist anwendbar für Systeme, die für eine Typprüfung vorgesehen sind.
Systèmes à tubes radiants suspendus à usage non domestique utilisant les combustibles gazeux - Sécurité et efficacité énergétique
Le présent document définit les exigences et les méthodes d’essai relatives à la construction, la sécurité, la
classification, le marquage et le rendement des systèmes à tubes radiants suspendus à usage non domestique
utilisant les combustibles gazeux comprenant des systèmes à monobrûleur et à brûleurs multiples (appelés
dans le corps du texte le « système »), chaque unité de combustion étant équipée d’un système automatique
de commande et de sécurité.
Pour les tubes radiants comprenant un monobrûleur, la présente norme s’applique aux appareils de
type A2, A3, B12, B13, B22, B23, B42, B43, B52, B53, C12, C13, C32, C33, C52 et C53 destinés à être utilisés ailleurs que
dans des locaux domestiques où l’arrivée en air comburant et/ou l’évacuation des produits de
combustion est/sont assurée(s) par des moyens mécaniques situés en amont du coupe-tirage, le cas
échéant.
Pour les systèmes à tubes radiants comprenant plusieurs unités de chauffage à tube radiant, le présent
document s’applique aux tubes de type B52, B52x, B53 et B53x destinés à être utilisés ailleurs que dans des locaux
domestiques où l’arrivée en air comburant et/ou l’évacuation des produits de combustion est/sont
assurée(s) par des moyens mécaniques.
Le présent document couvre également des appareils comprenant un échangeur de chaleur secondaire dans
le système d’évacuation des produits de combustion.
Le présent document ne s’applique pas :
a) aux appareils conçus pour des locaux domestiques ;
b) aux appareils utilisés en plein air ;
c) aux appareils dont le débit calorifique de chaque unité de combustion dépasse 120 kW (sur le
pouvoir calorifique inférieur du gaz de référence approprié) ;
d) aux appareils équipés de conduits d’évacuation des produits de combustion non métalliques, à
l’exception des conduits en aval d’un éventuel échangeur de chaleur des produits de combustion à
condensation ;
De plus, pour les systèmes de chauffage comprenant plusieurs tubes, la présente norme ne s’applique
pas :
e) aux appareils et systèmes conçus pour une condensation continue dans le système d’évacuation dans
des conditions de fonctionnement normales, sauf en aval d’un éventuel échangeur de chaleur des
produits de combustion supplémentaire.
La présente norme s’applique aux systèmes qui sont destinés à subir des essais de type.
Stropna cevna sevala z enim ali več plinskimi gorilniki za gretje nestanovanjskih prostorov - Varnost in energijska učinkovitost
Ta evropski standard določa zahteve in preskusne metode za izdelavo, varnost, razvrščanje, označevanje in učinkovitost stropnih cevnih seval z enim ali več plinskih gorilnikov za gretje nestanovanjskih prostorov (v telesu besedila imenovanih »sistem«), pri čemer je vsaka enota gorilnika pod nadzorom avtomatskega sistema za upravljanje gorilnikov. Za cevna grelna sevala, ki vsebujejo en gorilnik, se ta standard uporablja za aparate tipa A2, A3, B12, B13, B22, B23, B42, B43, B52, B53, C12, C13, C32, C33, C52 in C53, namenjene za uporabo v nestanovanjskih prostorih, v katerih se dovajanje zgorevalnega zraka in/ali odvajanje produktov zgorevanja doseže z mehanskimi sredstvi, nameščenimi pred preusmerjevalnikom vleka v smeri toka (če je zagotovljen). Za cevna sevala z več plinskimi cevnimi grelnimi segmenti se ta standard uporablja za sisteme tipa B52, B52x, B53 in B53x, namenjene za uporabo v nestanovanjskih prostorih, v katerih se dovajanje zgorevalnega zraka in/ali odvajanje produktov zgorevanja doseže z mehanskimi sredstvi. Ta standard vključuje tudi aparate, ki imajo v dimniškem sistemu vgrajene sekundarne izmenjevalnike toplote.
Ta standard se ne uporablja za:
a) aparate, zasnovane za uporabo v stanovanjskih prostorih;
b) aparate za uporabo na prostem;
c) aparate, pri katerih nazivna moč katerega koli posameznega gorilnika presega 120 kW (na podlagi neto kalorične vrednosti ustreznega referenčnega preskusnega plina);
d) aparate s cevmi za odvajanje produktov zgorevanja v dimniškem sistemu, ki so nekovinske, razen če so cevi v smeri toka za morebitnim dodatnim kondenzacijskim toplotnim izmenjevalnikom izpušnih plinov.
Prav tako se ne uporablja za grelne sisteme, ki vsebujejo več cevnih grelnikov:
e) aparate in sisteme, ki so zasnovani za stalno kondenzacijo v dimniškem sistemu pri običajnih delovnih pogojih, razen če so v smeri toka za morebitnim dodatnim kondenzacijskim toplotnim izmenjevalnikom izpušnih plinov.
Ta evropski standard se uporablja za sisteme, predvidene za tipski preskus.
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
01-januar-2020
Nadomešča:
SIST EN 416-1:2009
SIST EN 416-2:2006
SIST EN 777-1:2009
SIST EN 777-2:2009
SIST EN 777-3:2009
Stropna cevna sevala z enim ali več plinskimi gorilniki za gretje nestanovanjskih
prostorov - Varnost in energijska učinkovitost
Gas-fired overhead radiant tube heaters and radiant tube heater systems for non-
domestic use - Safety and energy efficiency
Gasbefeuerte Dunkelstrahler und Dunkelstrahlersysteme für gewerbliche und industrielle
Anwendungen - Sicherheit und Energieeffizienz
Systèmes à tubes radiants suspendus à usage non domestique utilisant les
combustibles gazeux - Sécurité et efficacité énergétique
Ta slovenski standard je istoveten z: EN 416:2019
ICS:
97.100.20 Plinski grelniki Gas heaters
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
EN 416
EUROPEAN STANDARD
NORME EUROPÉENNE
October 2019
EUROPÄISCHE NORM
ICS 97.100.20 Supersedes EN 416-1:2009, EN 416-2:2006, EN 777-
1:2009, EN 777-2:2009, EN 777-3:2009
English Version
Gas-fired overhead radiant tube heaters and radiant tube
heater systems for non-domestic use - Safety and energy
efficiency
Systèmes à tubes radiants suspendus à usage non Gasbefeuerte Dunkelstrahler und
domestique utilisant les combustibles gazeux - Sécurité Dunkelstrahlersysteme für gewerbliche und
et efficacité énergétique industrielle Anwendungen - Sicherheit und
Energieeffizienz
This European Standard was approved by CEN on 26 August 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
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
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 416:2019 E
worldwide for CEN national Members.
Contents Page
European foreword . 6
1 Scope . 7
2 Normative references . 8
3 Terms and definitions . 9
3.1 System and its constituent parts . 10
3.2 Combustion circuit . 12
3.3 Adjusting, control and safety devices . 13
3.4 Operation of the appliance . 15
3.5 Gases . 18
3.6 Conditions of operation and measurement . 19
3.7 Energy efficiency . 22
3.8 Country of destination . 23
3.9 Symbols . 24
4 Classification of appliances . 28
4.1 Classification according gases and categories . 28
4.2 Classification according to the mode of evacuation of the combustion
products . 28
5 Constructional requirements . 31
5.1 General . 31
5.2 Requirements for adjusting, controls and safety devices. 37
5.3 Ignition devices . 44
5.4 Main burners . 44
5.5 Pressure test points . 44
5.6 Injectors . 45
5.7 Exhaust gas heat exchanger. 45
6 Operational requirements . 45
6.1 Test methods. 45
6.2 Safety of operation . 51
6.3 Oxides of Nitrogen, NO . 74
x
6.4 Determination of electrical power consumption . 76
7 Energy Efficiency . 77
7.1 General principle of measurement and calculation radiant factor . 77
7.2 Working space . 77
7.3 Test equipment to determine radiant output . 77
7.4 Test procedure . 81
7.5 Calculation of radiant factor . 83
7.6 Determination of thermal efficiency . 86
7.7 Test report . 87
8 Requirements of energy efficiency (rational use of energy) . 87
8.1 General . 87
8.2 Seasonal energy efficiency . 87
9 Risk assessment . 91
10 Marking and instructions . 91
10.1 Marking of the appliance and the packaging . 91
10.2 Instructions . 94
10.3 Presentation . 99
10.4 Information Requirements . 99
Annex A (informative) National situations .100
A.1 General .100
A.1.1 General .100
A.1.2 Gas rate adjusters, aeration adjusters and regulators .100
A.1.3 Conversion to different gases .100
A.2 Gas connections in the various countries .100
A.3 Flue connections in the various countries .102
Annex B (informative) Typical Systems .103
B.1 Single burner systems .103
B.1.1 Type B appliances with a fan in the combustion circuit .103
B.1.2 Type C appliances with a fan in the combustion circuit .107
B.2 Multi tube heater systems .109
B.2.1 Type D System .109
B.2.2 Type E System .111
B.2.3 Type F systems .112
Annex C (informative) Equivalence rules .113
C.1 Conversion to categories within a restricted Wobbe Index range .113
C.2 Conversion to categories within an identical Wobbe Index range .113
C.3 Conversion to categories within a wider Wobbe Index range .114
Annex D (informative) Calculation of the mass flow rate of flue gases.115
D.1 Flue gas mass flow rate .115
D.2 Quantity of air in the flue gas .115
D.3 Flue gas excess air ratio (λ) .115
D.4 Quantity of water vapour in the flue gas .116
D.5 Quantity of Nitrogen in the flue gas .116
D.6 Quantity of Oxygen in the flue gas .116
D.7 Dry quantity of flue gas .117
D.8 Quantity of carbon dioxide in the flue gas.117
Annex E (informative) Identification of the types of gas in use in various
countries .119
Annex F (normative) Special national conditions .121
Annex G (normative) Calculation of conversions of NO .122
x
G.1 NO emission conversion factors (NCV) .122
x
G.2 NO Conversion — Calculation .123
x
Annex H (informative) National situations of countries whose national bodies are
CEN associate members .125
Annex I (informative) Different types of heat input control.126
Annex J (informative) Radiometer design .127
J.1 Principle radiometer design features .127
J.2 Radiometer technical design .128
J.3 Pyro-electric detector .128
J.4 Ulbricht Sphere .128
Annex K (informative) Radiometer calibration .131
K.1 Radiometer calibration .131
K.2 Black body calibration equipment and procedure .131
K.2.1 General .131
K.2.2 Temperature calibration at reference condition .133
K.2.3 Temperature calibration at higher temperatures .134
K.2.4 Calibration calculation .135
K.3 Calibration procedure in detail, presented as a worked example .136
K.3.1 Calibration Measurements .136
K.3.2 Selecting the average readings .136
K.3.3 Determination of the 1/S sensitivity per temperature .137
K.3.4 Determining the 1/S sensitivity of the radiometer .137
K.3.5 Documentation of calibration results .137
Annex L (normative) Correction of measured radiant output for absorption by H O
and CO .141
L.1 General .141
L.2 Calculation method .143
Annex M (informative) Radiant heat output data - Recording of results .144
M.1 General information to be recorded .144
M.1.1 Test and appliance data .144
M.1.2 Radiometer technical data .144
M.1.3 Measuring plane technical data .144
M.2 Measurement results .145
M.2.1 Test information .145
M.2.2 Test ambient conditions .145
M.2.3 Gas/heat input data .145
M.2.4 Flue gas data .146
M.2.5 Absorption of water vapour and CO data .146
M.2.6 Irradiation measurement data .146
Annex N (informative) Worked example .147
N.1 General information .147
N.2 Radiometer technical data .147
N.3 Measuring plane technical data .147
N.4 Measurement results .148
N.4.1 Test information .148
N.4.2 Test ambient conditions .148
N.4.3 Gas/heat input data .148
N.4.4 Flue gas data .149
N.4.5 Absorption of water vapour and CO data .149
N.4.6 Irradiation measurement data .149
Annex O (normative) Flue test probes .150
Annex P (normative) Product information required .155
Annex Q (informative) Derivation of equations to determine thermal efficiency .157
Annex R (normative) Flue gas heat exchanger .159
R.1 General .159
R.2 Materials .159
R.3 Corrosion resistance .159
R.4 Thermal insulation .160
R.5 Gas tightness .161
R.6 Removal of condensate .161
R.7 Non-metallic flue system .161
R.8 Frost protection .161
R.9 Distance to flammable materials .161
R.10 Safety-related equipment .161
R.11 Operation over-pressure when using water as secondary medium .161
R.12 Calculation of the heat transfer performance.162
R.12.1 Test requirements .162
R.12.2 Heat transfer calculations .162
R.12.3 Minimum requirements .163
Annex S (normative) Uncertainty of measurements .164
Annex ZA (informative) Relationship between this European Standard and the
ecodesign requirements of Commission Regulation (EU) No 2015/1188
aimed to be covered .166
Bibliography .167
European foreword
This document (EN 416:2019) 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 416-1:2009, EN 416-2:2006. EN 777-1:2009, EN 777-2:2009 and
EN 777-3:2009.
Aspects of safety and energy efficiency of appliances are brought together. Significant changes of
the new document compared to the earlier standards are: incorporation recent state of the art
radiant tube heaters, unique and more detailed description of method to determine radiant
factor, incorporating terms and calculation scheme of Ecodesign Regulation (EU) No. 2015/1188,
and minimum requirements of an optional flue gas heat exchanger.
The test gases, test pressures and appliance categories given in this European Standard are in
accordance with those specified in EN 437:2003+A1:2009.
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.
1 Scope
This document specifies the requirements and test methods for the construction, safety,
classification, marking and efficiency of non-domestic gas-fired overhead radiant tube heaters
incorporating a single burner and multiple burner systems (referred to in the body of the text as
the “system”) with each burner unit under the control of an automatic burner control system.
For radiant tube heaters incorporating a single burner, this standard is applicable to Type A , A ,
2 3
B , B , B , B , B , B , B , B , C , C , C , C C and C appliances intended for use in other
12 13 22 23 42 43 52 53 12 13 32 33, 52 53
than domestic dwellings, in which the supply of combustion air and/or the evacuation of the
products of combustion is achieved by mechanical means located upstream of the draught
diverter, if provided.
For radiant tube heater systems incorporating multiple tube heater segments, this document is
applicable to Type B B B and B systems intended for use in other than domestic
52, 52x, 53 53x
dwellings, in which the supply of combustion air and/or the evacuation of the products of
combustion is achieved by mechanical means.
This document also includes appliances incorporating a secondary heat exchanger in the flue
system.
This document is not applicable to:
a) appliances designed for use in domestic dwelling;
b) outdoor appliances;
c) appliances where the heat input of any individual burner unit is in excess of 120 kW (based
on the net calorific value of the appropriate reference test gas);
d) appliances having combustion products evacuation ducts that are non-metallic in the flue
system – except ducts downstream of a possible additional condensing exhaust gas heat
exchanger.
In addition, for heater systems incorporating multiple tube heaters this standard is not
applicable to:
e) appliances and systems that are designed for continuous condensation within the flue system
under normal operating conditions – except downstream a possible additional exhaust gas
heat exchanger.
This standard is applicable to systems 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, Pressure regulators and associated safety devices for gas appliances - Part 1:
Pressure regulators for inlet pressures up to and including 50 kPa
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 1057:2006+A1:2010, Copper and copper alloys - Seamless, round copper tubes for water and
gas in sanitary and heating applications
EN 1106:2010, Manually operated taps for gas burning appliances
EN 1856-1:2009, Chimneys - Requirements for metal chimneys - Part 1: System chimney products
EN 1859:2009+A1:2013, Chimneys - Metal chimneys - Test methods
EN 10226-1:2004, Pipe threads where pressure tight joints are made on the threads - Part 1: Taper
external threads and parallel internal threads - Dimensions, tolerances and designation
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 12828:2012+A1:2014, Heating systems in buildings - Design for water-based heating systems
EN 13216-1:2004, Chimneys - Test methods for system chimneys - Part 1: General test methods
EN 13410:2001, Gas-fired overhead radiant heaters - Ventilation requirements for non-domestic
premises
EN 14459:2015, Safety and control devices for burners and appliances burning gaseous or liquid
fuels - Control functions in electronic systems - Methods for classification and assessment
EN 14597:2012, Temperature control devices and temperature limiters for heat generating systems
Impacted by EN 88-1:2011+A1:2016
EN 14800:2007, Corrugated safety metal hose assemblies for the connection of domestic appliances
using gaseous fuels
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
EN 60751:2008, Industrial platinum resistance thermometers and platinum temperature sensors
(IEC 60751:2008)
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 3166-1:2014, Codes for the representation of names of countries and their subdivisions -
Part 1: Country codes (ISO 3166-1:2013)
EN ISO/IEC 17025:2005, General requirements for the competence of testing and calibration
laboratories (ISO/IEC 17025:2005)
ISO 7-1, Pipe threads where pressure-tight joints are made on the threads — Part 1: Dimensions,
tolerances and designation
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
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
As impacted by EN 60335-1:2012/AC:2014, EN 60335-1:2012/A11:2014 and EN 60335-1:2012/A12:2017.
As impacted by EN 60529:1991/AC:2016-12, EN 60529:1991/A1:2000, EN 60529:1991/A2:2012.
As impacted by ISO 7-1/Cor 1:2007.
3.1 System and its constituent parts
3.1.1
overhead radiant tube heater
gas-fired appliance intended for installation above head level which is designed to heat the space
beneath by radiation by means of a tube or tubes, covered over complete tube length at their top
side by a reflector and heated by the internal passage of combustion products
3.1.2
single burner heater
radiant tube heater which employ a single combustion system incorporating independent flame
monitoring and combustion air fan
3.1.3
multiple tube heater system
radiant tube heater systems which employ two or more tube heaters each with burner units with
each unit incorporating independent flame monitoring
Note 1 to entry: One or more fans may be used to assist in the evacuation of products of combustion or
the supply of combustion air.
System D: tube heater system in which individual tube heater segments without fans are connected to a
common duct with evacuation fan.
System E: tube heater system in which individual tube heater segments each with a fan are connected to a
common duct without a fan, the fans of the tube heater segments can be positioned at the entrance or at
the end of the segments.
System F: tube heater system in which individual tube heater segments each with a fan are connected to a
common duct with a fan, the fans of the tube heater segments can be positioned at the entrance or at the
end of the segments
3.1.4
tube heater segment
tube heater in which only one burner unit is situated and which only contains the products of
combustion generated by this burner, the tube heater segment being connected with other tube
heater segments to a common duct
3.1.5
common duct
duct which receives products of combustion from two or more tube heater segments for the
purposes of evacuation to the outside
3.1.6
individual burner unit
unit comprising a main burner and, if appropriate, an ignition burner
Note 1 to entry: In addition, such components as are necessary to ignite the burner(s), monitor the flame
and control the gas supply to the burner(s) are included in the unit.
3.17
inlet connection
part of the system intended to be connected to the gas supply
3.1.8
mechanical joint
(mechanical means of obtaining soundness)
means of ensuring the soundness of an assembly of several (generally metallic) parts without the
use of liquids, pastes, tapes, etc
Note 1 to entry: For example the following:
a) metal to metal joints;
b) conical joints;
c) toroidal sealing rings (“O” rings);
d) flat joints.
3.1.9
gas circuit
part of the burner unit that conveys or contains the gas between the burner unit gas inlet
connection and the burner(s)
3.1.10
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
3.1.11
gas rate adjuster
component allowing to set the gas rate of the burner to a predetermined value according to the
supply conditions
Note 1 to entry: Adjustment can 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.
Note 5 to entry: Immobilizing a gas rate adjuster by means as e.g. a screw is called “setting an adjuster”.
Note 6 to entry: Arrangement in respect of the adjuster such that any attempt to change the adjustment
breaks the sealing device or sealing material and makes this interference apparent is called “sealing an
adjuster”.
Note 7 to entry: A gas rate adjuster is considered to be non-existent if it has been factory sealed in a
position such that it is not operational in the range of supply pressures corresponding to the appliance
category.
Note 8 to entry: Putting an adjuster or a control (of temperature, pressure, etc.) out of action and sealing
it in this position is called “putting an adjuster or a control out of service”; the appliance functions as if the
adjuster or control had been removed.
3.1.12
injector
component that admits the gas into a burner
3.1.13
main burner
burner that is intended to ensure the thermal function of the appliance
Note 1 to entry: Main burner is generally called “the burner”.
3.1.14
premixed burner
burner in which the gas and a quantity of air, at least equal to that theoretically necessary for
complete combustion, are mixed before the flame port(s)
3.1.15
ignition device
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.
3.1.16
ignition burner
burner whose flame is intended to ignite another burner
3.1.17
primary aeration adjuster
device enabling the primary air to be set at the desired value according to the supply conditions
3.1.18
flue gas heat exchanger
heat exchanger directly mounted in the flue system to transfer heat from the combustion
products to a heat sink
3.2 Combustion circuit
3.2.1
combustion products circuit
circuit including the combustion chamber, the radiant tube, the combustion products evacuation
duct and either the fitting piece or the connection to the terminal, if any
3.2.2
air supply and combustion products evacuation ducts
means for transporting combustion air to the burner and combustion products to the terminal or
fitting piece
Note 1 to entry: A fitting piece is not utilized by appliances of Type C or of Type C . It is necessary to
1 3
distinguish between:
a) completely surrounded ducts where the combustion products evacuation duct is surrounded by
combustion air throughout its length; and
b) separate ducts where the combustion products evacuation duct and the combustion air supply duct
are neither concentric nor completely surrounded ducts
3.2.3
combustion chamber
enclosure inside which combustion of the air-gas mixture takes place
3.2.4
flue outlet
part of a Type B system that connects with a flue to evacuate the products of combustion
3.2.5
draught diverter
device placed in the combustion products circuit to reduce the influence of flue-pull and that of
down-draught on the burner performance and combustion
3.2.6
terminal
device(s) fitted to the outside of the building, which are connected to the air supply and
combustion products evacuation ducts for Type C and Type C appliances (one or two devices)
1 3
3.2.7
terminal guard
device that protects the terminal from mechanical damage from outside influences
3.2.8
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
3.3 Adjusting, control and safety devices
3.3.1
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.
3.3.2
air proving device
device intended to cause safety shutdown in the event of abnormal conditions of air admission or
of combustion products evacuation
3.3.3
programming unit
device which executes the programme 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. Such a sequence of operations involving switching on,
starting up, supervising and switching off the burner is called “programme”.
3.3.4
flame detector
device by which the presence of a flame is detected and signalled
Note 1 to entry: It 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.
3.3.5
flame signal
signal given by the flame detector device, normally when the flame sensor senses a flame
3.3.6
pressure regulator
device which maintains the outlet pressure constant independent of the variations in inlet
pressure within defined limits
3.3.7
adjustable pressure regulator
regulator provided with means for changing the outlet pressure setting
3.3.8
volume regulator
device which maintains the gas rate constant within a given tolerance, independent of the
upstream pressure
3.3.9
zero regulator
device which maintains a specified downstream pressure between it and a gas orifice at zero
pressure within fixed limits independent of variation within a given range of upstream pressure
and negative pressure downstream of the gas orifice
3.3.10
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
3.3.11
automatic shut-off valve
device that automatically opens, closes or varies the gas rate on a signal from the control circuit
and/or the safety circuit
3.3.12
range-rating device
component on the burner unit intended to be used by the installer to adjust the heat input of the
burner unit, within a range of heat inputs stated by the manufacturer, 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).
3.4 Operation of the appliance
3.4.1
heat input
Q
in
quantity of energy used in unit time corresponding to the volumetric or mass flow rates: the
calorific value used being the net or gross calorific value
Note 1 to entry: The heat input is expressed in kilowatts (kW).
[SOURCE: EN 437:2003+A1:2009]
3.4.2
nominal heat input
Q
in, nom
value of the heat input declared by the manufacturer
Note 1 to entry: The nominal heat input is expressed in kilowatts (kW).
[SOURCE: EN 437:2003+A1:2009]
3.4.3
Volume flow rate
V
volume of gas consumed by the appliance in unit time during continuous operation
3 3 3
Note 1 to entry: The volume flow rate is expressed in m /h, l/min, dm /h or dm /s
[SOURCE: EN 437:2003+A1:2009]
3.4.4
Mass flow rate
M
mass of gas consumed by the appliance in unit time during continuous operation
Note 1 to entry: The mass flow rate is expressed in kg/h or g/h
[SOURCE: EN 437:2003+A1:2009]
3.4.5
start gas
gas that is supplied at the start gas rate either at the main burner or at a separate ignition burner
3.4.6
start gas rate
restricted gas flow rate admitted either to a separate ignition burner or to the main burner during
start up
3.4.7
start gas flame
flame established at the start gas rate either at the main burner or at a separate ignition burner
3.4.8
flame stability
characteristic of flames which remain on the burner ports or in the flame reception zone intended
by the construction
3.4.9
flame lift
total or partial lifting of the base of the flame away from the burner port or the flame reception
zone provided by the design
Note 1 to entry: Flame lift may cause the flame to blow out, i.e. extinction of the air-gas mixture.
3.4.10
light-back
entry of a flame into the body of the burner
3.4.11
light-back at the injector
ignition of the gas at the injector, either as a result of light-back into the burner or by the
propagation of a flame outside the burner
3.4.12
sooting
phenomenon appearing during incomplete combustion and characterized by deposits of soot on
the surfaces or parts in contact with the combustion products or with the flame
3.4.13
yellow tipping
yellowing of the tip of the blue cone of an aerated flame
3.4.14
purge
forced introduction of air through the combustion chamber and flue passages in order to displace
any remaining fuel/air mixture and/or products of combustion, differentiated in
a) pre-purge: the purge which takes place between the start signal and the energizing of the
ignition device
b) post-purge: the purge which takes place immediately following shut-down
3.4.15
first saf
...
Questions, Comments and Discussion
Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.
Loading comments...