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SIST EN 15456:2008

Heating boilers - Electrical power consumption for heat generators - System boundaries - Measurements

Heating boilers - Electrical power consumption for heat generators - System boundaries - Measurements

This European Standard applies to heating boilers (e.g. with forced-draught burners (unit)) and burners equipped with a fan including all components specified by the manufacturer to be required for the designed boiler operation. This European Standard also applies to heating boilers sold without burners. This European Standard covers the required definitions, the system boundaries, the measurements for the determination of the electrical power consumption and, where applicable, the water side resistance in order to establish the electric auxiliary energy for: - Oil-fired forced-draught burners in accordance with EN 267; - Automatic forced-draught burners for gaseous fuels in accordance with EN 676; - Flued oil stoves with vaporizing burners in accordance with EN 1; - Heating boilers sold without burners for: - Oil-fired forced-draught burners in accordance with EN 303-1, EN 303-2 and EN 304; - Condensing boilers for liquid fuels in accordance with EN 15034; - Room sealed boilers for fuel oil in accordance with EN 15035; - Heating boilers;Heating boilers with forced-draught burners;Nominal heat output not exceeding 10 MW and maximum operating temperature of 110 °C in accordance with EN 14394; - Pellet burners for small heating boilers in accordance with EN 15270.

Heizkessel - Elektrische Leistungsaufnahme für Wärmeerzeuger - Systemgrenzen - Messungen

Dieses Dokument gilt für Heizkessel (z. B. mit Gebläsebrenner (Einheit)) und Brenner, die mit einem Gebläse ausgestattet sind einschließlich sämtlicher Bauteile, die vom Hersteller für den vorgesehenen Betrieb des Kessels festgelegt sind.
Dieses Dokument gilt auch für Heizkessel, die ohne Brenner verkauft werden.
Dieses Dokument behandelt die erforderlichen Definitionen, die Systemgrenzen, die Messungen zur Bestimmung der elektrischen Leistungsaufnahme und, falls anwendbar, den wasserseitigen Widerstand zur Bereitstellung der elektrischen Hilfsenergie für:
-   Ölbefeuerte Gebläsebrenner nach EN 267, automatische Brenner mit Gebläse für gasförmige Brennstoffe nach EN 676;
-   atmosphärische Ölbrenner nach EN 1;
-   Heizkessel, die ohne Brenner verkauft werden, für:
-   ölbefeuerte Gebläsebrenner nach EN 303-1, EN 303-2 und EN 304;
-   Brennwertkessel für flüssige Brennstoffe nach prEN 15034;
-   raumluftunabhängige Kessel für Heizöl nach prEN 15035;
-   Heizkessel — Heizkessel mit Gebläsebrenner — Nennwärmeleistung nicht größer als 10 MW und mit einer maximalen Betriebstemperatur von 110 °C nach prEN 14394.
ANMERKUNG   Sämtliche Messungen an Kesseln werden ausschließlich in der Heizbetriebsart durchgeführt. Diese Betriebsart ist auch bei der Warmwasserbereitung wirksam.

Chaudieres de chauffage - Consommation de puissance électrique des générateurs de chaleur - Limites du systeme - Mesurages

La présente Norme européenne s’applique aux chaudières de chauffage (par exemple avec brûleurs à air
soufflé (unités)) et aux brûleurs à air soufflé, y compris tous les composants que le fabricant estime
nécessaires pour le fonctionnement prévu de la chaudière.
La présente Norme européenne s’applique également aux chaudières de chauffage livrées sans brûleur.
La présente Norme européenne couvre les définitions, les limites du système, les mesurages permettant de
déterminer la puissance électrique et, le cas échéant, les pertes de charge du circuit hydraulique, afin d’établir
l’énergie électrique auxiliaire pour :
- brûleurs à fioul à air soufflé selon l’EN 267 ;
- brûleurs automatiques à air soufflé pour combustibles gazeux selon l’EN 676 ;
- poêles à combustible liquide avec brûleurs à vaporisation selon l’EN 1 ;
- chaudières de chauffage livrées sans brûleur pour :
- brûleurs à fioul à air soufflé selon l’EN 303-1 [6], l’EN 303-2 [7] et l’EN 304 ;
- chaudières de chauffage fioul à condensation selon l’EN 15034 ;
- chaudières de chauffage au fioul étanches selon l’EN 15035 ;
- chaudières de chauffage - chaudières de chauffage avec brûleurs à air soufflé - puissance calorifique
nominale n’excédant pas 10 MW et température maximale de service de 110 °C, conformément à
l’EN 14394 ;
- brûleurs à granulés pour petites chaudières de chauffage selon l’EN 15270.
NOTE Tous les mesurages sur les chaudières sont effectués en mode chauffage uniquement. Ce mode convient
également pour la production d’eau chaude.

Kotli za gretje - Poraba elektrike v generatorjih toplote - Sistemske meje - Meritve

General Information

Status
Published
Publication Date
08-Oct-2008
ICS
27.060.30 - Boilers and heat exchangers
91.140.10 - Central heating systems
Technical Committee
PLN - Gas appliances for domestic use
Current Stage
6060 - National Implementation/Publication (Adopted Project)
Start Date
08-Oct-2008
Due Date
13-Dec-2008
Completion Date
09-Oct-2008
Directive
2015/1187 - Commission Delegated Regulation (EU) 2015/1187 of 27 April 2015 supplementing Directive 2010/30/EU of the European Parliament and of the Council with regard to energy labelling of solid fuel boilers and packages of a solid fuel boiler, supplementary heaters, temperature controls and solar devices
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EN 15456:2008 - Heating boilers - Electrical power consumption for heat generators - System boundaries - Measurements

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2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Kotli za gretje - Poraba elektrike v generatorjih toplote - Sistemske meje - MeritveHeizkessel - Elektrische Leistungsaufnahme für Wärmeerzeuger - Systemgrenzen - MessungenChaudieres de chauffage - Consommation de puissance électrique des générateurs de chaleur - Limites du systeme - MesuragesHeating boilers - Electrical power consumption for heat generators - System boundaries - Measurements91.140.10Sistemi centralnega ogrevanjaCentral heating systems27.060.30Grelniki vode in prenosniki toploteBoilers and heat exchangersICS:Ta slovenski standard je istoveten z:EN 15456:2008SIST EN 15456:2008en,fr,de01-november-2008SIST EN 15456:2008SLOVENSKI
STANDARD



SIST EN 15456:2008



EUROPEAN STANDARDNORME EUROPÉENNEEUROPÄISCHE NORMEN 15456April 2008ICS 91.140.10 English VersionHeating boilers - Electrical power consumption for heatgenerators - System boundaries - MeasurementsChaudières de chauffage - Puissance électrique desgénérateurs de chaleur - Limites du système - MesuragesHeizkessel - Elektrische Leistungsaufnahme fürWärmeerzeuger - Systemgrenzen - MessungenThis European Standard was approved by CEN on 29 February 2008.CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this EuropeanStandard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such nationalstandards may be obtained on application to the CEN 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 translationunder the responsibility of a CEN member into its own language and notified to the CEN Management Centre has the same status as theofficial versions.CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland,France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal,Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMITÉ EUROPÉEN DE NORMALISATIONEUROPÄISCHES KOMITEE FÜR NORMUNGManagement Centre: rue de Stassart, 36
B-1050 Brussels© 2008 CENAll rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN 15456:2008: ESIST EN 15456:2008



EN 15456:2008 (E) 2 Contents Page Foreword.3 Introduction.4 1 Scope.5 2 Normative references.5 3 Terms and definitions.6 4 System boundaries for measurements.8 4.1 General.8 4.2 System with circulator (pump) for heat generation.8 4.3 System with a single circulator (pump) for heat generation and heat distribution.9 4.4 System without any circulator (pump).9 4.5 Burner.9 5 Measurement.9 5.1 Heating boiler.9 5.1.1 Setting of the heating boiler.9 5.1.2 Determination of the water side resistance.10 5.1.3 Measurement modes.10 5.2 Forced-draught burners.10 5.3 Pellet burner.11 5.4 Oil stoves.11 5.5 Determination of the water side resistance.11 5.6 Test report and documentation.11 Annex A (normative)
Test report.12 A.1 Summary.12 A.2 Testing the electrical power consumption Paux.13 Annex B (informative)
Determination of the water side resistance.15 B.1 Operating conditions.15 B.1.1 General.15 B.1.2 Boilers without integrated pump.15 B.1.3 Boilers with integrated pump.16 B.1.4 Determination of operating conditions of boilers with integrated pump.18 Bibliography.19
SIST EN 15456:2008



EN 15456:2008 (E) 3 Foreword This document (EN 15456:2008) has been prepared by Technical Committee CEN/TC 57 “Central heating boilers”, the secretariat of which is held by DIN. 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 October 2008, and conflicting national standards shall be withdrawn at the latest by October 2008. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN [and/or CENELEC] shall not be held responsible for identifying any or all such patent rights. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom. SIST EN 15456:2008



EN 15456:2008 (E) 4 Introduction This document specifies the measurement methods for evaluating auxiliary power consumption. This document also provides the parameters for boilers necessary for the calculation of the total power consumption according to prEN 15316-4-1 [4]. SIST EN 15456:2008



EN 15456:2008 (E) 5
1 Scope This European Standard applies to heating boilers (e.g. with forced-draught burners (unit)) and burners equipped with a fan including all components specified by the manufacturer to be required for the designed boiler operation. This European Standard also applies to heating boilers sold without burners. This European Standard covers the required definitions, the system boundaries, the measurements for the determination of the electrical power consumption and, where applicable, the water side resistance in order to establish the electric auxiliary energy for:  Oil-fired forced-draught burners in accordance with EN 267;  Automatic forced-draught burners for gaseous fuels in accordance with EN 676;  Flued oil stoves with vaporizing burners in accordance with EN 1;  Heating boilers sold without burners for:  Oil-fired forced-draught burners in accordance with EN 303-1 [6], EN 303-2 [7] and EN 304;
 Condensing boilers for liquid fuels in accordance with EN 15034;  Room sealed boilers for fuel oil in accordance with EN 15035;  Heating boilers - Heating boilers with forced-draught burners - Nominal heat output not exceeding 10 MW and maximum operating temperature of 110 °C in accordance with EN 14394;  Pellet burners for small heating boilers in accordance with EN 15270. NOTE All measurements for boilers are carried out in the heating mode only. For hot water production this mode is also relevant. 2 Normative references The following referenced documents are indispensable for the application 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 1, Flued oil stoves with vaporising burners EN 267, Forced draught oil burners — Definitions, requirements, testing, marking EN 304:1992, Heating boilers — Test code for heating boilers for atomizing oil burners EN 676, Automatic forced draught burners for gaseous fuels EN 14394, Heating boilers — Heating boilers with forced draught burners — Nominal heat output not exceeding 10 MW and maximum operating temperature of 110 °C EN 15034, Heating boilers — Condensing heating boilers for fuel oil EN 15035, Heating boilers — Special requirements for oil fired room sealed units up to 70 kW SIST EN 15456:2008



EN 15456:2008 (E) 6 EN 15270, Pellet burners for small heating boilers — Definitions, requirements, testing, marking 3 Terms and definitions For the purposes of this European Standard, the following terms and definitions apply. 3.1 reference conditions
15 °C and 1 013,25 mbar, unless otherwise stated 3.2 fuel mass flow
Bm& fuel mass which is consumed during each unit of time by the boiler in continuous operation
NOTE Fuel mass flow is expressed in cubic metre per hour or kilogram per hour. 3.3 fuel volumetric flow
BV& volume of the fuel supplied to the boiler during continuous operation for each unit of time NOTE Fuel volumetric flow is expressed in cubic metre per hour. 3.4 electrical power consumption
Paux 3.4.1
electrical power consumption for heat generation
Paux,gen electric energy consumed by the system components (e.g. pump, fan, valves and control unit) required for the heat generator‘s designed operation:  at full load (100 %) Paux 100,
 at part load (30 %) Paux 30 and  at stand-by operation Paux sb.
NOTE Electrical power consumption for heat generation is expressed in watts. 3.4.2
electrical power consumption for other use Paux, dis
electric energy consumed by the system components which are not required for the heat generator‘s designed operation, e.g. heat distribution pump, valves for heat distribution NOTE Electrical power consumption for other use is expressed in watts. 3.5 draught pressure differential between the static air pressure in the place of installation and the static pressure of the exhaust gases, as measured in the exhaust gas measuring section, which is required for correct operation of the boiler in the test room SIST EN 15456:2008



EN 15456:2008 (E) 7 3.6 calorific value quantity of heat produced by the complete combustion, at a constant pressure equal to 1 013,25 mbar, of a unit volume or mass of gas or oil, the constituents of the combustible mixture being taken at reference conditions and the products of combustion being brought back to the same conditions A distinction is made between:  gross calorific value Hs the water produced by combustion is assumed to be condensed;  net calorific value Hi the water produced by combustion is assumed to be in the vapour state. NOTE The calorific value is expressed:  either in mega joules per cubic metre (MJ/m³) of dry gas under the reference conditions;  or in mega joules per kilogram (MJ/kg) of dry gas; [EN 437:2003 [3]]  or in mega joules per kilogram (MJ/kg) of oil. 3.7 nominal heat input
PN maximal value of heat input for the heating mode declared by the manufacturer NOTE Nominal heat input is expressed in kilowatts. 3.8 nominal heat output
-N maximal value of heat output declared by the manufacturer NOTE Nominal heat output is expressed in kilowatts. 3.9 test room
room in which the heat generator has been installed during the measurement in which the ambient parameters corresponding to the reference conditions are found 3.10 residual pump head hR available pump head after deduction of the hydraulic resistance of the boiler
NOTE Residual pump heat is expressed in metre. 3.11 stand-by operation
operating mode without any heat demand, the system immediately starts up in the required mode as soon as there will be a heat demand
3.12 temperature spread
temperature difference between flow and return connection of the heat generator 3.13 unit assembly of a boiler and a forced-draught burner, offered as a factory-assembled unit
SIST EN 15456:2008



EN 15456:2008 (E) 8 3.14 heat input
P product of the volumetric flow or mass flow and the net or gross calorific value of the fuel referred to the same reference conditions: iBHiN,HVP⋅=&, or sBHsN,HVP⋅=& (1) or
iBHiN,HmP⋅=&, or sBHsN,HmP⋅=& (2) NOTE Heat input is expressed in kilowatts. 3.15 water side resista
...

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SIST
kSIST FprEN 15502-2-3:2023(Main)
Gas-fired central heating boilers - Part 2-3: Specific standard for hybrid units combining a gas fired boiler and an electrical heat pump in a product
EN 15502-2-3:2023

This document specifies, the requirements and tests methods concerning, in particular, the construction, safety, fitness for purpose, and rational use of energy, as well as the classification and marking of hybrid products.
The hybrid product is composed by:
-   a gas boiler as heat generator which could supply the heat demand in all operating conditions;
-   an electrical heat pump, as heat generator, which has not to fulfil the heat demand in all operating conditions;
-   a control unit (see definition 3.10).
The gas boiler as part of the hybrid product covered by this document is a gas-fired central heating boilers from the types C1 up to C9 and the types B2, B3 and B5, according to the classification in EN 1749:2020:
a)   that have a nominal heat input (on the basis of gross calorific value) not exceeding 400 kW;
b)   that use one or more combustible gases of the three gas families at the pressures stated in EN 437;
c)   where the temperature of the heat transfer fluid does not exceed 105 °C during normal operation;
d)   where the maximum operating pressure in the water circuit does not exceed 6 bar;
e)   which shall be classified as gas boiler;
f)   which are intended to be installed either indoors or outdoors in a partially protected place;
g)   which may include the facility to produce hot water, either by the instantaneous or storage principle, the whole being marketed as a single unit;
h)   which are designed for either sealed water systems or for open water systems.
This document provides requirements for boilers with known constructions. For boilers with any alternative constructions, which might not fully be covered by this document, the risk associated with this alternative construction needs to be assessed.
An example of an assessment methodology, based upon risk assessment and which covers the essential requirements of the Gas Appliance Regulation UE/426/2016, is given in Clause 11.
This document does not cover all the requirements for:
Appliances that are intended to be connected to gas grids where the quality of the distributed gas is likely to vary to a large extent over the lifetime of the appliance (see Annex DD);
a)   appliances using flue dampers;
b)   appliances of the types B21, B31, B51, C21, C41, C51, C61, C71 and C81;
c)   appliances incorporating flexible plastic flue liners;
d)   appliances designed to become connected to a combined flue duct system that is designed to operate under overpressure (for example Ca)).
This document specifies minimum operating requirements which ensure that the products are fit for the use designated by the manufacturer when used for space heating and/or DHW production.
This part specifies the common requirements and test methods concerning, in particular the construction, safety, fitness for purpose, and rational use of energy.
This document is to be used in conjunction with:
a)   the gas fired boiler, the generic part EN 15502-1 and specific Part 2-1 and Part 2-2.
b)   the electrical heat pump, EN 14511-4:2018, EN 378-1:2016 to EN 378-4:2016+A1:2019 and FprEN 14825:2020.
c)   electrical safety, EN 60335-1:2019, EN 60335-2-102:2016, EN 60335-2-40:2012, EN 60335-2-40/A2:2009 and EN 60204-1.
d)   for domestic hot water production, EN 13203-5.

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SIST
SIST EN 15502-1:2022/AC:2023(Corrigendum)
Gas-fired heating boilers - Part 1: General requirements and tests
EN 15502-1:2021/AC:2022

This European Standard specifies the common requirements and test methods, as well as the classification, marking and energy labelling of gas-fired central heating boilers that are fitted with atmospheric burners, fan assisted atmospheric burners or fully premixed burners, and are hereafter referred to as “boilers”.
This European Standard is to be used in conjunction with the specific Parts 2 (Part 2-1 and following ones).
This European Standard applies to boilers of types B and C.
NOTE For further background information on appliance types see CEN/TR 1749:2014 [1].
a) that use one or more combustible gases of the three gas families at the pressures stated in EN 437;
b) where the temperature of the water is below or above 105 °C during normal operation;
c) where the maximum operating pressure in the water circuit does not exceed 6 bar;
d) which can give rise to condensation under certain circumstances;
e) which are declared in the instructions for installation to be either a "condensing" boiler or a "low temperature boiler" or a "standard boiler" or an "other boiler". If no declaration is given the boiler is to be considered both a "standard boiler" and an "other boiler";
NOTE The Ecodesign Directive defines "other boilers", "low temperature boilers" and "condensing boilers". The Boiler Efficiency Directive defines "standard boilers", "low temperature boilers" and "condensing boilers". Depending on the legislation applied, a boiler can be both "a standard boiler" and an "other boiler"."
f) which are intended to be installed inside a building or in a partially protected place;
g) which are intended to produce also hot water either by the instantaneous or storage principle as a single unit.
This European Standard applies to boilers designed for sealed water systems or for open water systems.
NOTE This general standard and the specific standards (see Part 2) provide requirements for boilers with known constructions. For boilers with any alternative constructions, which might not fully be covered by this standard or a specific standard, the risk associated with this alternative construction will need to be assessed.
An example of an assessment methodology, based upon risk assessment, is given in Clause 11.
This European Standard is not intended to cover appliances intended for connection to gas grids where the quality of the distributed gas is likely to vary to a large extent over the lifetime of the appliance (see Annex EE).
This European Standard is not intended to cover appliances designed and constructed to burn gas containing toxic components.

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SIST EN 15502-2-1:2022(Main)
Gas-fired central heating boilers - Part 2-1: Specific standard for type C appliances and type B2, B3 and B5 appliances of a nominal heat input not exceeding 1 000 kW
EN 15502-2-1:2022

This European Standard specifies, the requirements and test methods concerning, as well as the classification and marking of gas-fired central heating boilers that are fitted with atmospheric burners, fan assisted atmospheric burners or fully premixed burners, and are hereafter referred to as “boilers”.
This document is to be used in conjunction with FprEN15502-1:2020
This European Standard covers gas-fired central heating boilers from the types C1 up to C9 and the types B2, B3 and B5:
NOTE   For further background information on appliance types see EN 1749:2020.
a)   that have a nominal heat input (on the basis of net calorific value) not exceeding 1 000 kW;
b)   that use one or more combustible gases of the three gas families at the pressures stated in EN 437:2018;
c)   where the temperature of the heat transfer fluid does not exceed 105 °C during normal operation;
d)   where the maximum operating pressure in the water circuit does not exceed 6 bar;
e)   which can give rise to condensation under certain circumstances;
f)   which are declared in the instructions for installation to be either a “condensing” boiler or a "low temperature boiler" or a “standard boiler”; if no declaration is given the boiler is to be considered a “standard boiler”;
g)   which are intended to be installed inside a building or in a partially protected place;
h)   which are intended to produce also hot water either by the instantaneous or storage principle as a single unit.;
i)   which are designed for either sealed water systems or for open water systems;
j)   which are either modular boilers, or non modular boilers.
k) which are from the types C(10) that are equipped with a gas-air ratio control and that have a ∆pmax, saf(min) of 25 Pa, and C(11) that have condensing boiler modules that are equipped with a gas-air ratio control and that have a ∆pmax, saf(min) of 25 Pa."
NOTE   This European Standard provides requirements for boilers with known constructions. For boilers with any alternative constructions, which might not fully be covered by this standard, the risk associated with this alternative construction needs to be assessed.
An example of an assessment methodology, based upon risk assessment, is given in Clause 11.
This European Standard does not cover all the requirements for:
aa)   Appliances above 1000 kW
ab) Appliances that are intended to be connected to gas grids where the quality of the distributed gas is likely to vary to a large extent over the lifetime of the appliance (see Annex XC);"
ac)   Appliances using flue dampers;
ad)   Appliances of the types B21, B31, B51, C21, C41, C51, C61, C71, C81 ,C(12) and C(13);"
ae)   C7 appliances that have a nominal heat input (on the basis of net calorific value) exceeding 70 kW;
af)   Appliances incorporating flexible plastic flue liners;
ag)   C(10) boilers:
1)    without a gas-air ratio control, or
2)    which are non-condensing appliances, or
3)    which have a maximum safety pressure difference at minimum heat input not equal to 25 Pa (∆pmax, saf(min));
ah)   C(11) boilers that have boiler modules:
1)    without a gas-air ratio control, or
2)    which are non-condensing appliances, or
3)    which have a maximum safety pressure difference at minimum heat input not equal to 25 Pa (∆pmax, saf(min));"
ai)   Appliances intended to be connected to a (common) flue having mechanical extraction.
aj)   surface temperatures of external parts particular to children and elderly people
ak)   appliances that are intended to burn natural gases of the second family where hydrogen is added to the natural gas.
al)    appliances equipped with an adaptive combustion control function (ACCF).
am)   boilers intended to be installed in areas accessible to elderly people and children

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SIST EN 15502-1:2022(Main)
Gas-fired heating boilers - Part 1: General requirements and tests
EN 15502-1:2021

This European Standard specifies the common requirements and test methods, as well as the classification, marking and energy labelling of gas-fired central heating boilers that are fitted with atmospheric burners, fan assisted atmospheric burners or fully premixed burners, and are hereafter referred to as “boilers”.
This European Standard is to be used in conjunction with the specific Parts 2 (Part 2-1 and following ones).
This European Standard applies to boilers of types B and C.
NOTE For further background information on appliance types see CEN/TR 1749:2014 [1].
a) that use one or more combustible gases of the three gas families at the pressures stated in EN 437;
b) where the temperature of the water is below or above 105 °C during normal operation;
c) where the maximum operating pressure in the water circuit does not exceed 6 bar;
d) which can give rise to condensation under certain circumstances;
e) which are declared in the instructions for installation to be either a "condensing" boiler or a "low temperature boiler" or a "standard boiler" or an "other boiler". If no declaration is given the boiler is to be considered both a "standard boiler" and an "other boiler";
NOTE The Ecodesign Directive defines "other boilers", "low temperature boilers" and "condensing boilers". The Boiler Efficiency Directive defines "standard boilers", "low temperature boilers" and "condensing boilers". Depending on the legislation applied, a boiler can be both "a standard boiler" and an "other boiler"."
f) which are intended to be installed inside a building or in a partially protected place;
g) which are intended to produce also hot water either by the instantaneous or storage principle as a single unit.
This European Standard applies to boilers designed for sealed water systems or for open water systems.
NOTE This general standard and the specific standards (see Part 2) provide requirements for boilers with known constructions. For boilers with any alternative constructions, which might not fully be covered by this standard or a specific standard, the risk associated with this alternative construction will need to be assessed.
An example of an assessment methodology, based upon risk assessment, is given in Clause 11.
This European Standard is not intended to cover appliances intended for connection to gas grids where the quality of the distributed gas is likely to vary to a large extent over the lifetime of the appliance (see Annex EE).
This European Standard is not intended to cover appliances designed and constructed to burn gas containing toxic components.

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SIST EN 1148:1999/A1:2005(Main)
Heat exchangers - Water to water heat exchangers for district heating - Test procedures for establishing the performance data - Amendment A1
EN 1148:1998/A1:2005

UAP of 4 months (TC Res 147/1998) (CC/001115)

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