iTeh StandardsiTeh Standards
EURUSD
Your shopping cart is empty.
CEN

EN 656:1999

(Main)

Gas-fired central heating boilers - Type B boilers of nominal heat input exceeding 70 kW but not exceeding 300 kW

Gas-fired central heating boilers - Type B boilers of nominal heat input exceeding 70 kW but not exceeding 300 kW

This 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 or fully premixed burners, and are hereafter referred to as "boilers".  This standard applies to boilers of type B, as listed in 4.2:   ð that use one or more combustible gases of the three gas families at the pressures stated in Tables 14 and 15;  ð that have a nominal heat input (net CV basis) exceeding 70 kW, but not exceeding 300 kW, including modular boilers;  ð where the temperature of the heat transfer fluid does not exceed 105 øC during normal operation;  ð where the maximum operating pressure in the water circuit does not exceed 6 bar.  The standard applies to boilers designed for sealed water systems or for open water systems.  The standard does not contain all the requirements necessary for boilers:   ð intended to be installed in the open or in living rooms;  ð permanently fitted with more than one flue outlet;  ð where the combustion circuit is sealed with respect to the room where the boiler is installed;  ð of the condensing type;  ð of the low temperature type;  ð intended to be connected to a common flue having mechanical extraction;  ð fitted with a forced draught burner in accordance with EN 676;  ð producing hot water for domestic purposes.  This standard only covers type testing.

Heizkessel für gasförmige Brennstoffe - Heizkessel des Typs B mit einer Nennwärmebelastung größer als 70 kW aber gleich oder kleiner als 300 kW

Diese Norm legt die Anforderungen und Prüfbedingungen für den Bau, die Sicherheit, die Gebrauchsgüte, den rationellen Energieeinsatz, die Einteilung und die Kennzeichnung von gasbetriebenen Heizkesseln fest, die mit atmosphärischen Brennern, ventilatorunterstützten Brennern oder Vormischbrennern ausgerüstet sind und hiernach als "Kessel" bezeichnet werden.

Chaudières de chauffage central utilisant les combustibles gazeux - Chaudières de type B dont le débit calorifique nominal est supérieur à 70 kW mais inférieur ou égal à 300 kW

La présente norme européenne prescrit les spécifications et les techniques d'essai 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 chauffage central équipées de brûleurs atmosphériques avec ou sans ventilateur, ou de brûleurs à prémélange total utilisant les combustibles gazeux, appelées ci-après "chaudières.

Plinski kotli za centralno ogrevanje – Tip kotlov B z imensko močjo nad 70 kW do vključno 300 kW

General Information

Status
Withdrawn
Publication Date
19-Oct-1999
Withdrawal Date
15-Feb-2022
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
16-Feb-2022
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
92/42/EEC - Efficiency requirements for new hot-water boilers fired with liquid or gaseous fuels
Mandate
M/066 - Standardization mandate to CEN concerning Efficiency requirements for boilers
M/BC/CEN/89/6 - Standardization request to CEN concerning appliances burning gaseous fuels
Ref Project
SIST EN 656:2001 - Gas-fired central heating boilers - Type B boilers of nominal heat input exceeding 70 kW but not exceeding 300 kW

Relations

Amended By
EN 656:1999/A1:2006 - Gas-fired central heating boilers - Type B boilers of nominal heat input exceeding 70 kW, but not exceeding 300 kW
Effective Date
22-Dec-2008
Revised
EN 15502-2-2:2014 - Gas-fired central heating boilers - Part 2-2: Specific standard for type B1 appliances
Effective Date
08-Oct-2012
Revised
EN 15502-2-1:2012 - 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
Effective Date
07-Dec-2011

Buy Standard

EN 656:2001EN 656:2001
PreviousNext
Standard
EN 656:2001
English language
117 pages
sale 10% off
Preview
sale 10% off
Preview
e-Library read for
1 day

Standards Content (Sample)


SLOVENSKI STANDARD
01-februar-2001
3OLQVNLNRWOL]DFHQWUDOQRRJUHYDQMH±7LSNRWORY%]LPHQVNRPRþMRQDGN:GR
YNOMXþQRN:
Gas-fired central heating boilers - Type B boilers of nominal heat input exceeding 70 kW
but not exceeding 300 kW
Heizkessel für gasförmige Brennstoffe - Heizkessel des Typs B mit einer
Nennwärmebelastung größer als 70 kW aber gleich oder kleiner als 300 kW
Chaudieres de chauffage central utilisant les combustibles gazeux - Chaudieres de type
B dont le débit calorifique nominal est supérieur a 70 kW mais inférieur ou égal a 300 kW
Ta slovenski standard je istoveten z: EN 656:1999
ICS:
91.140.10 Sistemi centralnega Central heating systems
ogrevanja
97.100.20 Plinski grelniki Gas heaters
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

SIST EN 656:20
...

Questions, Comments and Discussion

Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.

This May Also Interest You

CEN
EN 15502-2-2:2024(Main)
Gas-fired central heating boilers - Part 2-2: Specific standard for type B1 appliances
SIST EN 15502-2-2:2024

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.

  • Draft
    64 pages
    English language
    sale 10% off
    e-Library read for
    1 day
CEN
CEN/TS 15502-3-1:2024(Main)
Gas-fired central heating boilers - Part 3-1: H2NG and ACCF - Expansion of EN 15502-2-1:2022
SIST-TS CEN/TS 15502-3-1:2024

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).

  • Draft
    58 pages
    English language
    sale 10% off
    e-Library read for
    1 day
CEN
EN 15502-2-1:2022+A1:2023(Main + 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 15502-2-1:2022+A1:2024

This document specifies the requirements and test methods, 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 intended to be used in conjunction with EN 15502-1:2021.
This document covers gas-fired central heating boilers from the types C1 up to C(11) and the types B2, B3 and B5:
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 1 000 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 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 2   This document 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 document does not cover all the requirements for:
aa)   appliances above 1 000 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 AB of EN 15502-1:2021);
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 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.

  • Standard
    105 pages
    English language
    sale 10% off
    e-Library read for
    1 day
CEN
EN 15502-1:2021+A1:2023(Main + Amendment)
Gas-fired heating boilers - Part 1: General requirements and tests
SIST EN 15502-1:2022+A1:2024

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.

  • Standard
    213 pages
    English language
    sale 10% off
    e-Library read for
    1 day
CEN
EN 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
SIST EN 15502-2-3:2024

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:
-   a gas boiler as a heat generator which is able to supply the heat demand in all operating conditions;
-   an electrical air-to-water heat pump, as a heat generator, which does not have to meet the heat demand in all operating conditions;
-   a control unit (see definition 3.1.10).
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;
e)   which are classified as a gas-fired central heating boiler;
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.

  • Standard
    42 pages
    English language
    sale 10% off
    e-Library read for
    1 day
CEN
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
SIST EN 303-7:2007

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.

  • Standard
    61 pages
    English language
    sale 10% off
    e-Library read for
    1 day
CEN
EN 303-3:1998/AC:2006(Corrigendum)
Heating boilers - Part 3: Gas-fired central heating boilers - Assembly comprising a boiler body and a forced draught burner
SIST EN 303-3:1999/AC:2006

TC - Replace Tables 5 and 6

  • Corrigendum
    7 pages
    English, French and German language
    sale 10% off
    e-Library read for
    1 day
CEN
EN 303-3:1998/A2:2004(Amendment)
Heating Boilers - Part 3 : Gas-fired heating boilers - Assembly comprising a boiler body and a forced draught burner
SIST EN 303-3:1999/A2:2004

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 :
"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."

  • Amendment
    10 pages
    English language
    sale 10% off
    e-Library read for
    1 day
CEN
EN 303-3:1998(Main)
Heating boilers - Part 3: Gas-fired central heating boilers - Assembly comprising a boiler body and a forced draught burner
SIST EN 303-3:1999

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.

  • Standard
    47 pages
    English language
    sale 10% off
    e-Library read for
    1 day
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

  • Draft
    27 pages
    English language
    sale 10% off
    e-Library read for
    1 day