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BS EN 15420:2010

Superseded
Superseded

A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.

View Superseded by
superseded

A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.

Gas-fired central heating boilers. Type C boilers of nominal heat input exceeding 70 kW, but not exceeding 1000 kW
Available format(s)

Hardcopy , PDF

Superseded date

30-11-2012

Language(s)

English

Published date

31-12-2010

Foreword
1 Scope
2 Normative references
3 Terms and definitions
4 Classification of boilers
5 Constructional requirements
6 Operational requirements
7 Test methods
8 Marking and instructions
Annex A (informative) - National situations
Annex B (informative) - Special national conditions
Annex C (informative) - A-deviations
Annex D (informative) - Classification of type C boilers
Annex E (informative) - Practical method of calibrating the test
        rig to enable the heat loss D[p] to be determined
Annex F (informative) - Main symbols and abbreviations used
Annex G (informative) - Compilation of test conditions
Annex H (informative) - Valving
Annex I (informative) - Determination of the heat losses from the
        test rig of the indirect method and the contributions of
        the circulating pump of the test rig
Annex J (informative) - Means of determining the ignition time at
        full rate
Annex K (informative) - Example of the calculation of the NO[x]
        weighting factors for a boiler with several rates
Annex L (informative) - Calculation of conversions of NO[x]
Annex M (normative) - Test apparatus for type C2 boilers
Annex N (informative) - Requirements and test methods for separate
        air supply and combustion products evacuation ducts of type
        C6 boilers
Annex O (informative) - Use of test gases
Annex ZA (informative) - Clauses of this European Standard
         addressing essential requirements or provisions of EU
         Directives
Bibliography

Defines 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 document 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 document applies to boilers of type C, as listed in 4.2:

  • that use one or more combustible gases of the three gas families at the pressures stated in Tables 14 and 15;

  • that have a nominal heat input (on the basis of net calorific value) exceeding 70 kW, but not exceeding 1 000 kW, including modular boilers;

  • where the temperature of the heat transfer fluid does not exceed 105 °C during normal operation;

  • where the maximum operating pressure in the water circuit does not exceed 6 bar;

  • which can give rise to condensation under certain circumstances.

The document applies to boilers designed for sealed water systems or for open water systems.

The document does not contain all the requirements necessary for boilers:

  • intended to be installed in the open or in living rooms;

  • permanently fitted with more than one flue outlet;

  • of the condensing type;

  • intended to be connected to a common flue having mechanical extraction;

  • type C21, C41, C51, C61, C7 and C81 boilers;

  • fitted with a forced draught burner in accordance with EN 676;

  • producing hot water for domestic purposes.

This document only covers type testing.

Committee
GSE/29
DevelopmentNote
Supersedes 06/30144913 DC. (01/2011)
DocumentType
Standard
Pages
172
PublisherName
British Standards Institution
Status
Superseded
SupersededBy

Standards Relationship
EN 15420:2010 Identical

EN 676:2003+A2:2008/AC:2008 AUTOMATIC FORCED DRAUGHT BURNERS FOR GASEOUS FUELS
ISO 2553:2013 Welding and allied processes Symbolic representation on drawings Welded joints
IEC 60730-2-9:2015 RLV Automatic electrical controls - Part 2-9: Particular requirements for temperature sensing controls
EN 50165 : 97 AMD 1 2001 ELECTRICAL EQUIPMENT ON NON-ELECTRIC APPLIANCES FOR HOUSEHOLD AND SIMILAR PURPOSES - SAFETY REQUIREMENTS
EN 10029:2010 Hot-rolled steel plates 3 mm thick or above - Tolerances on dimensions and shape
EN 12067-2:2004 Gas/air ratio controls for gas burners and gas burning appliances - Part 2: Electronic types
EN 1057:2006+A1:2010 Copper and copper alloys - Seamless, round copper tubes for water and gas in sanitary and heating applications
EN 1643:2014 Safety and control devices for gas burners and gas burning appliances - Valve proving systems for automatic shut-off valves
EN 15417:2006 Gas-fired central heating boilers - Specific requirements for condensing boilers with a nominal heat input greater than 70 kW but not exceeding 1000 kW
EN 60730-2-9:2010 Automatic electrical controls for household and similar use - Part 2-9: Particular requirements for temperature sensing controls
EN 12067-1 : 98 AMD 1 2003 GAS/AIR RATIO CONTROLS FOR GAS BURNERS AND GAS BURNING APPLIANCES - PART 1: PNEUMATIC TYPES
EN 1092-3:2003/AC:2007 FLANGES AND THEIR JOINTS - CIRCULAR FLANGES FOR PIPES, VALVES, FITTINGS AND ACCESSORIES, PN DESIGNATED - PART 3: COPPER ALLOY FLANGES
EN ISO 4063:2010 Welding and allied processes - Nomenclature of processes and reference numbers (ISO 4063:2009, Corrected version 2010-03-01)
EN 483:1999/A4:2007 GAS-FIRED CENTRAL HEATING BOILERS - TYPE C BOILERS OF NOMINAL HEAT INPUT NOT EXCEEDING 70 KW
EN ISO 3166-1:2014 Codes for the representation of names of countries and their subdivisions - Part 1: Country codes (ISO 3166-1:2013)
IEC 61558-2-6:2009 Safety of transformers, reactors, power supply units and similar products for supply voltages up to 1 100 V - Part 2-6: Particular requirements and tests for safety isolating transformers and power supply units incorporating safety isolating transformers
EN 161:2011+A3:2013 Automatic shut-off valves for gas burners and gas appliances
EN 1854:2010 Pressure sensing devices for gas burners and gas burning appliances
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)
ISO 857:1990 Welding, brazing and soldering processes — Vocabulary
ISO 7-1:1994 Pipe threads where pressure-tight joints are made on the threads Part 1: Dimensions, tolerances and designation
EN 437:2003+A1:2009 Test gases - Test pressures - Appliance categories
EN 125:2010+A1:2015 Flame supervision devices for gas burning appliances - Thermoelectric flame supervision devices
IEC 60529:1989+AMD1:1999+AMD2:2013 CSV Degrees of protection provided by enclosures (IP Code)
EN 126:2012 Multifunctional controls for gas burning appliances
CR 1404:1994 Determination of emissions from appliances burning gaseous fuels during type-testing
CR 1472:1997 General guidance for the marking of gas appliances
CR 1749 : 2001 EUROPEAN SCHEME FOR THE CLASSIFICATION OF GAS APPLIANCES ACCORDING TO THE METHOD OF EVACUATION OF THE PRODUCTS OF COMBUSTION (TYPES)
92/42/EEC : 1992 AMD 5 2013 COUNCIL DIRECTIVE 92/42/EEC OF 21 MAY 1992 ON EFFICIENCY REQUIREMENTS FOR NEW HOT-WATER BOILERS FIRED WITH LIQUID OR GASEOUS FUELS
ISO 3166-1:2013 Codes for the representation of names of countries and their subdivisions Part 1: Country codes
EN 61558-2-6:2009 Safety of transformers, reactors, power supply units and similar products for supply voltages up to 1 100 V - Part 2-6: Particular requirements and tests for safety isolating transformers and power supply units incorporating safety isolating transformers
EN 60335-1:2012/A13:2017 HOUSEHOLD AND SIMILAR ELECTRICAL APPLIANCES - SAFETY - PART 1: GENERAL REQUIREMENTS (IEC 60335-1:2010, MODIFIED)
EN 298:2012 Automatic burner control systems for burners and appliances burning gaseous or liquid fuels
EN 60529:1991/AC:2016-12 DEGREES OF PROTECTION PROVIDED BY ENCLOSURES (IP CODE) (IEC 60529 EDITION 2.2 CORRIGENDUM 2:2015)
EN 1856-1:2009 Chimneys - Requirements for metal chimneys - Part 1: System chimney products
ISO 4063:2009 Welding and allied processes — Nomenclature of processes and reference numbers
EN 1092-2:1997 Flanges and their joints - Circular flanges for pipes, valves, fittings and accessories, PN designated - Part 2: Cast iron flanges
EN 88-1:2011+A1:2016 Pressure regulators and associated safety devices for gas appliances - Part 1: Pressure regulators for inlet pressures up to and including 50 kPa
ISO 228-1:2000 Pipe threads where pressure-tight joints are not made on the threads Part 1: Dimensions, tolerances and designation
EN 1561:2011 Founding - Grey cast irons
1990/396/EEC : 1990 COUNCIL DIRECTIVE OF 29 JUNE 1990 ON THE APPROXIMATION OF THE LAWS OF THE MEMBER STATES RELATING TO APPLIANCES BURNING GASEOUS FUELS
EN 257:2010 Mechanical thermostats for gas-burning appliances

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