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BS EN 15502-2-1:2022+A1:2023 Gas-fired central heating boilers - Specific standard for type C appliances and type B2, B3 and B5 appliances of a nominal heat input not exceeding 1 000 kW, 2024
- undefined
- 1 Scope
- 2 Normative references
- 3 Terms, definitions and symbols
- 4 Classification
- 5 Construction [Go to Page]
- 5.4.6.101 General
- 5.4.6.102 Air supply and combustion products evacuation ducts
- 5.4.6.103 Terminal
- 5.4.6.104 Terminal guard
- 5.4.6.105 Fitting piece
- 6 Electrical safety
- 7 Controls
- 8 Operational requirements [Go to Page]
- 8.1.2.1 Installation of the boiler
- 8.1.2.2 Gases used for testing
- 8.1.2.3 Conduct of test to obtain a heat input
- 8.1.2.4 Water circuit
- 8.1.2.5 Thermal equilibrium
- 8.1.2.6 General test conditions for combination boilers
- 8.1.2.7 Electrical supply
- 8.1.2.8 Tolerances of measurements
- 8.1.2.101 Pressure differences at different operational situations for type C(10) boilers
- 8.1.2.102 Pressure differences at different operational situations for type C(11) boilers
- 8.2.2.101 General
- 8.2.2.102 Soundness of the air supply and combustion product circuit type C boilers
- 8.2.2.103 Soundness of the combustion product circuit of type B boilers
- 8.4.101.1 Heat input at maximum functional pressure difference at maximum heat input
- 8.4.101.2 Heat input at maximum safety pressure difference at minimum heat input
- 8.5.101.1 Requirements
- 8.5.101.2 Test conditions
- 8.6.2.101 Additional requirements for type C(10) boilers and C(11) boiler modules
- 8.6.3.101 Requirements for ignition, cross lighting and combustion stability
- 8.6.3.102 General test conditions
- 8.6.3.103 Test conditions for Type C1, C3 and C9 boilers
- 8.6.3.104 Test conditions for type C2 boilers
- 8.6.3.105 Test conditions for type C4 boilers
- 8.6.3.106 Test conditions for type C5 boilers
- 8.6.3.107 Test conditions for type C6 boilers
- 8.6.3.108 Test conditions for type C7 boilers
- 8.6.3.109 Test conditions for type C8 boilers
- 8.6.3.110 Test conditions for type C(10) boilers
- 8.6.3.111 Test conditions for type C(11) boilers
- 8.6.3.112 Test conditions for type B2, B3 boilers
- 8.6.3.113 Test conditions for type B5 boiler
- 8.6.101.1 Requirements
- 8.6.101.2 Test conditions
- 8.9.102.1 Determination of the pre-purge volume
- 8.9.102.2 Determination of the pre-purge time
- 8.9.102.3 Test for safely weaving pre-purge under safety of operation condition
- 8.11.6.1 Thermoelectric device
- 8.11.6.2 Automatic burner control system
- 8.11.101.1 Requirement for air proving
- 8.11.101.2 Air proving by supervision of the combustion air rate or the combustion products rate
- 8.11.101.3 Air proving by using gas/air ratio controls
- 8.11.101.4 Functioning of the fan of a type C4 boiler
- 8.12.2.1 Test description
- 8.12.2.2 Requirements
- 8.12.2.3 Test conditions
- 8.12.3.1 Incomplete combustion
- 8.12.3.2 Supplementary test for fan assisted boilers
- 8.12.3.3 Flame lift
- 8.12.3.101 Special flue conditions
- 8.16.101.1 Requirements
- 8.16.101.2 Test conditions
- 8.16.102.1 Nominal working combustion products temperature
- 8.16.102.2 Overheat combustion products temperature
- 8.101.2.1 Duct sections and fittings
- 8.101.2.2 Ducts support
- 8.101.2.3 Vertical terminals
- 8.101.3.1 Flexural tensile strength
- 8.101.3.2 Components subject to wind load
- 8.102.2.1 Characterization
- 8.102.2.2 Long-term resistance to thermal load
- 8.102.2.3 Long-term resistance to condensate exposure
- 8.102.2.4 Resistance to condensing/non-condensing cycling
- 8.102.2.5 Resistance to ultraviolet radiation (UV)
- 8.102.2.6 Geometrical stability
- 8.102.2.7 Reaction to fire
- 8.103.8.1 Durability
- 8.103.8.2 Strength
- 8.104.5.1 Requirements
- 8.104.5.2 Test methods
- 8.104.5.3 Risk assessment in case of a failing non-return valve
- 9 Useful efficiencies
- 10 Electric auxiliary energy
- 11 Risk assessment
- 12 Marking and instructions [Go to Page]
- 12.2.1.1 General
- 12.2.1.2 For installation and adjustment of the gas circuit
- 12.2.1.3 For installation on the central heating circuit
- 12.2.1.4 For installation of the combustion circuit
- 12.2.1.5 For boilers intended to be installed in a partially protected place
- Figures
- Listing of tables and numbers
- Annexes
- Annexes A-V, AA, AB, AC and ZA
- Annex A A(normative)Test apparatus for type C2 boilers
- Annex X B(normative)Test methods to determine the effects of long-term thermal load, long-term condensate exposure, condensing/non-condensing cycling and resistance to UV radiation
- Annex Y C(informative)This annex is empty on purpose
- Annex Z D(informative)Example on calculation of common duct system for type C(11) boilers
- Annex ZA (informative)Left empty on purpose
- Annex ZB (informative)Clauses of this European Standard addressing the methods for the verification of the efficiency of the EU Directive 92/42/EEC, relating to the efficiency of new hot boilers with an output of (4 – 400) kW
- Annex ZC (informative)Relationship between this European Standard and the ecodesign requirements of Commission Regulation (EU) No 813/2013 L 239/136 aimed to be covered
- Annex ZD (informative)Relationship between this European Standard and the energy labelling requirements of Commission Delegated Regulation (EU) No 811/2013 L 239/1 aimed to be covered
- Annex ZE (informative)Relationship between this European Standard and the essential requirements of Regulation (EU) 2016/426 of the European Parliament and of the Council of 9 March 2016 on appliances burning gaseous fuels and repealing Directive 2009/142/EC aimed to be covered [Go to Page]
