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CEN

EN 297:1994

(Main)

Gas-fired central heating boilers - Type B11 and B11BS boilers fitted with atmospheric burners of nominal heat input not exceeding 70 kW

Gas-fired central heating boilers - Type B11 and B11BS boilers fitted with atmospheric burners of nominal heat input not exceeding 70 kW

This European Standard specifies the requirements and test methods for the construction, safety, fitness for purpose, rational use of energy, classification and marking of gas-fired central heating boilers, hereafter referred to as 'boilers'.  This standard applies to type B11 and BB11BS boilers:  - fitted with atmospheric burners; - that use gases corresponding to the three gas families and to the pressures   stated in 4.1.4; - that have a nominal heat input not exceeding 70 kW (on net calorific value); - where the temperature of the water does not exceed 95 øC during normal   operation; - where the maximum water-side operating pressure does not exceed 6 bar.  This standard does not contain all the necessary requirements for:  boilers:  - intended to be installed in the open; - having multiple heating units with a single draught diverter; - with fan-assisted combustion; - of the condensing type; i- ntended to be connected to a common flue having mechanical extraction; - fitted with manual or automatic means of adjusting the air supply and/or   adjusting the evacuation of the combustion products; - of the combination type (central heating and domestic hot water production);  appliances:  - combining the functions of an independent space heater and a hot water   generator for central heating.  This standard only covers type testing.

Heizkessel für gasförmige Brennstoffe - Heizkessel des Typs B11 und B11BS mit atmosphärischen Brennern mit einer Nennwärmebelastung kleiner als oder gleich 70 kW

Die vorliegende europäische Norm legt die Anforderungen und Prüfungen für den Bau, die Sicherheit, die Gebrauchsgüte und den sparsamen Energieeinsatz, die Einteilung und die Kennzeichnung von Heizkesseln fest, die mit atmosphärischen Brennern ausgerüstet sind und mit gasförmigen Brennstoffen betrieben werden (nachfolgend kurz Kessel genannt).

Chaudières de chauffage central utilisant les combustibles gazeux - Chaudières des types B11 et B11BS equipées de brûleurs atmosphériques dont le débit calorifique nominal est inférieur ou égal à 70 kW

La présente norme européenne définit les spécifications et les techniques d'essais relatives à la construction, la sécurité, l'aptitude à la fonction, l'utilisation rationnelle de l'énergie, la classification et le marquage des chaudières de chauffrage central utilisant les combustibles gazeux, appelées ci-après "chaudières".

Plinski kotli za centralno ogrevanje - Tipa B <+>11<+> and B<+>11BS<+> z atmosferskimi gorilniki z imensko močjo do vključno 70 kW

General Information

Status
Withdrawn
Publication Date
23-May-1994
Withdrawal Date
29-Jul-2014
ICS
91.140.10 - Central heating systems
Technical Committee
CEN/TC 109 - Central heating boilers using gaseous fuels
Drafting Committee
CEN/TC 109 - Central heating boilers using gaseous fuels
Current Stage
9960 - Withdrawal effective - Withdrawal
Completion Date
30-Jul-2014
Directive
2009/142/EC - DIRECTIVE 2009/142/EC OF THE EUROPEAN PARLIAMENT AND OF THE COUNCIL of 30 November 2009 relating to appliances burning gaseous fuels
90/396/EEC - Appliances burning gaseous fuels
Mandate
M/BC/CEN/89/6 - Standardization request to CEN concerning appliances burning gaseous fuels
Ref Project
SIST EN 297:1997 - Gas-fired central heating boilers - Type B11 and B11BS boilers fitted with atmospheric burners of nominal heat input not exceeding 70 kW

Relations

Replaced By
EN 15502-2-2:2014 - Gas-fired central heating boilers - Part 2-2: Specific standard for type B1 appliances
Effective Date
06-Aug-2014
Amended By
EN 297:1994/A2:1996 - Gas-fired central heating boilers - Type B11 and B11BS boilers, fitted with atmospheric burners of nominal heat input not exceeding 70 kW
Effective Date
08-Jun-2022
Amended By
EN 297:1994/A3:1996 - Gas-fired central heating boilers - Type B11 and B11BS boilers, fitted with atmospheric burners of nominal heat input not exceeding 70 kW
Effective Date
08-Jun-2022
Amended By
EN 297:1994/A5:1998 - Gas-fired central heating boilers - Type B11 and B11BS boilers, fitted with atmospheric burners of nominal heat input not exceeding 70 kW
Effective Date
08-Jun-2022
Amended By
EN 297:1994/A6:2003 - Gas-fired central heating boilers - Type B11 and B11BS boilers, fitted with atmospheric burners of nominal heat input not exceeding 70 kW
Effective Date
08-Jun-2022
Amended By
EN 297:1994/A4:2004 - Gas-fired central heating boilers - Type B11 and B11BS boilers, fitted with atmospheric burners of nominal heat input not exceeding 70 kW
Effective Date
08-Jun-2022
Corrected By
EN 297:1994/A2:1996/AC:2006 - Gas-fired central heating boilers - Type B11 and B11BS boilers fitted with atmospheric burners of nominal heat input not exceeding 70 kW
Effective Date
08-Jun-2022

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Standards Content (Sample)

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Heizkessel für gasförmige Brennstoffe - Heizkessel des Typs B11 und B11BS mit atmosphärischen Brennern mit einer Nennwärmebelastung kleiner als oder gleich 70 kWChaudieres de chauffage central utilisant les combustibles gazeux - Chaudieres des types B11 et B11BS equipées de bruleurs atmosphériques dont le débit calorifique nominal est inférieur ou égal a 70 kWGas-fired central heating boilers - Type B11 and B11BS boilers fitted with atmospheric burners of nominal heat input not exceeding 70 kW97.100.20Plinski grelnikiGas heaters91.140.10Sistemi centralnega ogrevanjaCentral heating systemsICS:Ta slovenski standard je istoveten z:EN 297:1994SIST EN 297:1997en01-marec-1997SIST EN 297:1997SLOVENSKI
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EN 15502-2-3:2023(Main)
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This document specifies the requirements and tests methods concerning the construction, safety, fitness for purpose, and rational use of energy, as well as the classification and marking of hybrid units.
A hybrid unit is composed of:
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A hybrid unit can include the facility to produce hot water, either by the instantaneous or storage principle, the whole being marketed as a single unit.
A gas boiler as part of a hybrid unit covered by this document is a gas-fired central heating boiler 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 437:2021;
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;
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f)   which are intended to be installed either indoors or outdoors in a partially protected place;
g)   which are designed for either sealed water systems or for open water systems.
This document provides requirements for boilers with known constructions.
NOTE 1   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.
NOTE 2   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:
aa)   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 EN 15502-1:2021, Annex AB);
ab)   appliances using flue dampers;
ac)   appliances of the types B21, B31, B51, C21, C41, C51, C61, C71 and C81;
ad)   appliances incorporating flexible plastic flue liners;
ae)   appliances designed to become connected to a combined flue duct system.
af)   appliances of the types C(10),C(11), C(12) and C(13);
ag)   C7 appliances that have a nominal heat input (on the basis of net calorific value) exceeding 70 kW;
ah)   appliances intended to be connected to a flue having mechanical extraction;
ai)   surface temperatures of external parts particular to children and elderly people;
aj)   appliances that are intended to burn natural gases of the second family where hydrogen is added to the natural gas;
ak)   appliances equipped with an adaptive combustion control function (ACCF);
al)   boilers intended to be installed in areas accessible to elderly people and children.
This document specifies minimum operating requirements which ensure that the products are fit for the use designated by the technical instructions when used for space heating and/or DHW production.
This document is intended to be used in conjunction with:
ba)   the gas-fired boiler, the generic part EN 15502-1:2021 and specific parts FprEN 15502-2-1:2022 and FprEN 15502-2-2:2022;
bb)   the electrical heat pump, EN 14511-4:2018, EN 378-1:2016+A1:2020, EN 378-2:2016 and EN 14825:2022;
bc)   electrical safety, EN 60335-1:2012 , EN 60335-2-102:2016 and IEC 60335-2-40:2018;
bd)   for domestic hot water production, EN 13203-5:2022.

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Gas-fired central heating boilers - Part 2-2: Specific standard for type B1 appliances
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This European Standard specifies, the requirements and test methods concerning, in particular the construction, safety, fitness for purpose, and rational use of energy, as well as the classification and marking of gas-fired central heating boilers that are fitted with atmospheric burners, fan assisted atmospheric burners and are hereafter referred to as boilers.
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This European Standard covers gas-fired central heating boilers type B11, B11BS, B12, B12BS, B13, B13BS according to the classification in CEN/TR 1749:2009:
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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 are declared in the technical instructions to be either a low temperature boiler or a standard boiler. If no declaration is given the boiler is to be considered a standard boiler;
f)   which are intended to be installed either indoors or in a partially protected place;
g)   which are either not intended to produce hot water, or are intended 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 European Standard is to be used in conjunction with the General Requirements Standard EN 15502 1.
For applications within the scope of the PED further requirements may be necessary (e.g. situations where the maximum allowable temperature exceeds 110 °C, or where volume times maximum allowable pressure is over 50 bar x litres).
This 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 shall be assessed.
An example of an assessment methodology, based upon risk assessment and which covers the essential requirements of the Gas Appliance Directive, is given in Clause 11.
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i)   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 of EN 15502 2 1:2012);
j)   appliances using flue dampers;
k)   appliances that have a nominal heat input (on the basis of net calorific value) exceeding 70 kW;
l)   appliances of the types A, B14, B2, B3, B4, B5 and C;
m)   appliances intended to be connected to a (common) flue having mechanical extraction;
n)   appliances with gas/air ratio control;
o)   modular boilers;
p)   boilers which can give rise to condensation under certain circumstances;
q)   boilers intended to be installed in a room with a foreseeable negative pressure relative to the pressure in the flue system.
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EN 303-7:2006(Main)
Heating boilers - Part 7: Gas-fired central heating boilers equipped with a forced draught burner of nominal heat output not exceeding 1 000 kW
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This European Standard specifies the requirements and test methods for the construction, the safety and the rational energy usage for gas-fired central heating boilers equipped with a forced draught burner. These boilers are formed of the assembly of a boiler body and a forced draught gas burner achieved on the production site of the manufacturer, the whole being designed and marketed as a complete boiler. The boiler body shall be in accordance with EN 303-1. The construction of the forced draught gas burner shall be in accordance with EN 676.

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TC - Replace Tables 5 and 6

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Heating Boilers - Part 3 : Gas-fired heating boilers - Assembly comprising a boiler body and a forced draught burner
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Replace the second paragraph by the following text :
"This European Standard applies to standard boilers and low-temperature boilers with a nominal heat output not exceeding 1000 kW and with a water temperature at normal operation not exceeding 105 °C."
Replace the 2nd dash of the third paragraph by the following text :
"- condensing boilers;"
Delete the last but one paragraph of EN 303-3 :
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Heating boilers - Part 3: Gas-fired central heating boilers - Assembly comprising a boiler body and a forced draught burner
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This European Standard specifies the requirements and test methods for the construction, the safety and the rational energy usage of an assembly made up of a boiler body complying with EN 303- 11) and a forced draught gas burner complying with EN 676, using combustible gases, hereafter referred to as a "boiler".  This European Standard applies to a boiler:  - with a nominal output not exceeding 1 000 kW.  This European Standard does not contain all the necessary requirements for:  - assemblies designed as units;  - condensing boilers and low temperature boilers;  - boilers intended to be installed in the open;  - boilers permanently fitted with more than one flue outlet;  - boilers fitted with a draught diverter;  -  boilers intended to be connected to a common flue having mechanical    extraction.  This European Standard does not apply to living-space dedicated boilers   If the boiler body has already been tested with a liquid fuel burner, in accordance with EN 303-1, EN 303-2 and EN 304, only the tests described in annex G need to be performed.  In the case of a range of boilers, see annex F.  This European Standard does not contain all the necessary requirements for low temperature boilers. Nevertheless, the testing methods defined by this European Standard for the determination of useful efficiencies can be used for low temperature boilers, after being adapted in accordance with annex H.  This European Standard only covers type testing.

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oSIST prEN 15502-2-2:2022

This document specifies, the requirements and test methods concerning the classification and marking of gas-fired central heating boilers that are fitted with atmospheric burners, fan assisted atmospheric burners and are hereafter referred to as “boilers”.
Where the word boiler is used, this is intended to be read as the boiler including its connecting ducts, ducts and terminals, if any.
This document covers gas-fired central heating boilers type B11, B11BS, B12, B12BS, B13, B13BS:
NOTE 1   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 70 kW;
b)   that use one or more combustible gases of the three gas families at the pressures stated in EN 437:2021;
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 are declared in the technical instructions to be either a “low temperature boiler” or a “standard boiler”. If no declaration is given the boiler is to be considered a “standard boiler”;
f)   which are intended to be installed inside a building or in a partially protected place;
g)   which are intended to produce also hot water either by the instantaneous or storage principle, as a single unit;
h)   which are designed for either sealed water systems or for open water systems.
NOTE 2   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, is given in Clause 11.
This document does not cover all the requirements for:
aa)   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 AB);
ab)   appliances using flue dampers;
ac)   appliances that have a nominal heat input (on the basis of net calorific value) exceeding 70 kW;
ad)   appliances of the types A, B14, B¬2, B3, B4, B5 and C;
ae)   appliances intended to be connected to a (common) flue having mechanical extraction;
af)   appliances with gas/air ratio control;
ag)   modular boilers;
ah)   boilers which can give rise to condensation under certain circumstances;
ai)   boilers intended to be installed in a room with a foreseeable negative pressure relative to the pressure in the flue system;
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)   boilers intended to be installed in areas accessible to elderly people and children;
am)   boilers equipped with an adaptive combustion control function (ACCF).
NOTE   Negative pressure relative to the pressure in the flue system can for example be caused by mechanical or thermal ventilation in airtight buildings.

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CEN/TS 15502-3-1:2024(Main)
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Scope of CEN/TS 15502-3-1
EN 15502-2-1:2022, Clause 1 applies with the following modifications:
Add after k):
l) which are fully premixed appliances equipped with an Adaptive Combustion Control Function (ACCF) 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 including gas grids for natural gases of the second family where up to 20% hydrogen volume is added to the natural gas (H2NG-Y20).
m) which are fully premixed appliances equipped with a Pneumatic Gas Air Ratio controller (PGAR) that are intended to be connected to gas grids for natural gases of the second family where up to 20% hydrogen volume is added to the natural gas (H2NG-Y20), where the quality of the distributed gas without adding the hydrogen is not likely to vary to a large extent over the lifetime of the appliance.
Replace ab) and ak) and al) by the following:
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 AB of EN 15502-1:2021), except for fully premixed appliances with a ACCF, as ACCF appliances are designed to adapt to variations in gas quality.
ak) appliances that are intended to burn natural gases of the second family where hydrogen is added to the natural gas, except for fully premixed appliances with a ACCF or PGAR (which are covered by this document);
al) Partially premixed appliances equipped with an adaptive combustion control function (ACCF).

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

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

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

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

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