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BS EN 15502-2-1:2012+A1:2016 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, 2017
- EN 15502-2-1:2012+A1:2016
- CEN/TC 109
- Contents Page
- European foreword
- Introduction
- 1 Scope
- 2 Normative references
- 3 Terms, definitions and symbols [Go to Page]
- 3.1 Terms and definitions
- 3.2 Symbols
- 4 Classification
- 5 Construction [Go to Page]
- 5.1 General
- 5.2 Conversion to different gases
- 5.3 Materials
- Table 101 — Metallic combustion products circuit material specifications [Go to Page]
- 5.4 Method of construction [Go to Page]
- 5.4.1 Design
- 5.4.2 Checking the state of operation
- 5.4.3 Use and servicing
- 5.4.4 Connections to the gas and water pipes
- 5.4.5 Soundness
- 5.4.6 Supply of combustion air and evacuation of the combustion products
- 5.4.7 Dampers
- 5.4.8 Air proving
- 5.4.9 Gas/air ratio controls
- 5.4.10 Fan
- 5.4.11 Drainage
- 5.4.12 Operational safety in the event of failure of the auxiliary energy
- 5.4.13 Special provision for Low Temperature Boilers and Condensing Boilers
- 5.5 Burners
- 5.6 Pressure test points
- 5.7 Requirements for the application of control and safety devices [Go to Page]
- 5.7.1 General
- 5.7.2 Adjusters and range-rating devices
- 5.7.3 Gas circuit
- 5.7.4 Gas pressure regulator
- 5.7.5 Ignition devices
- 5.7.6 Flame supervision devices [Go to Page]
- 5.7.6.1 General
- 5.7.6.2 Thermoelectric flame supervision device
- 5.7.6.3 Automatic burner control system
- 5.7.7 Gas/air ratio controls
- 5.7.8 Thermostats and water temperature limiting devices
- 5.7.9 Remote control
- 5.7.10 Expansion vessel and pressure gauge
- 5.7.11 Protection against frost for boilers intended to be installed in a partially protected place
- 5.7.12 Adjusting, control and safety devices for the domestic hot water circuit
- 6 Electrical safety
- 7 Controls
- 8 Operational requirements [Go to Page]
- 8.1 General [Go to Page]
- 8.1.1 Characteristics of the reference and limit gases
- 8.1.2 General test conditions [Go to Page]
- 8.1.2.1 Installation of the boiler
- 8.1.2.2 Gas circuit
- 8.1.2.3 Conduct of the 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
- 8.2 Soundness [Go to Page]
- 8.2.1 Soundness of the gas circuit
- 8.2.2 Soundness of the combustion circuit
- Table 102 — Maximum admissible leakage rates [Go to Page]
- 8.2.3 Soundness of the water circuit
- 8.2.4 Soundness of the domestic water circuit
- 8.3 Hydraulic resistance
- 8.4 Heat inputs and heat output
- 8.5 Limiting temperatures [Go to Page]
- 8.5.1 General
- 8.5.2 Limiting temperatures of the adjusting, control and safety devices
- 8.5.3 Limiting temperatures of the side walls, the front and the top
- 8.5.4 Limiting temperature of the test panels and the floor
- 8.6 Ignition, cross lighting, flame stability [Go to Page]
- 8.6.1 General
- 8.6.2 Limit conditions
- 8.6.3 !Special flue conditions"
- 8.6.4 Reduction of the gas rate of the ignition burner
- 8.7 Reduction of the gas pressure
- 8.8 Defective closure of the gas valve immediately upstream of the main burner
- 8.9 Pre-purge
- Table 103 — Illustration of volume of pre purge [Go to Page]
- 8.10 Functioning of a permanent ignition burner when the fan stops during the standby time
- 8.11 Adjustment, control and safety devices [Go to Page]
- 8.11.1 General
- 8.11.2 Boilers intended to be installed in a partially protected place
- 8.11.3 Combination Boilers
- 8.11.4 Control devices
- 8.11.5 Ignition devices
- 8.11.6 Flame supervision device [Go to Page]
- 8.11.6.1 Thermoelectric device
- 8.11.6.2 Automatic burner control system
- 8.11.7 Gas pressure regulator
- 8.11.8 Thermostats and water temperature limiting devices
- 8.12 Carbon monoxide [Go to Page]
- 8.12.1 General
- 8.12.2 Limit conditions
- 8.12.3 Special conditions
- 8.12.4 Sooting
- 8.12.5 Supplementary test for low temperature boilers and condensing boilers
- 8.13 NOx
- 8.14 Special provisions for boilers intended to be installed in a partially protected place
- 8.15 Formation of condensate
- 8.16 Temperature of combustion products
- 8.17 Sound power level
- Table 104 — Criteria for testing long-term resistance to thermal load
- Table 105 — Exposure time in weeks at raised temperatures
- Table 106 — Criteria for testing long-term resistance to condensate exposure
- Table 107 — Composition of test condensate for corrosion
- Table 108 — Criteria for testing resistance to condensing/non-condensing cycling
- Table 109 — Group sizes of internal flue diameters
- Table 110 — Criteria for testing long-term resistance to thermal load
- Table 111 — Criteria for testing-long term resistance to condensate exposure
- Table 112 — Condensate composition, related to construction classes
- 9 Useful efficiencies
- 10 Electric auxiliary energy
- 11 Risk assessment
- 12 Marking and instructions [Go to Page]
- 12.1 Boiler marking [Go to Page]
- 12.1.1 Supplementary markings
- 12.2 Instructions [Go to Page]
- 12.2.1 Technical instructions
- 12.2.2 Users instructions
- 12.3 Presentation
- 12.4 Supplementary marking and instructions in the case of boilers to be installed in partially protected places
- 13 Requirements for Eco-design Regulation (No 813/2013) and Energy Labelling Regulation (No 811/2013)
- 101 Figures
- Figure 101 — Example of probe for measuring the temperature of the combustion products
- Figure 102 — Position of the sample probe for type C boilers
- Figure 103 — Sampling probe for flue diameters greater than DN 100
- Figure 104 — Sampling probe for flue diameters not greater than DN 100
- Figure 105 — Test rig for boilers fitted with a horizontal terminal installed on a vertical wall
- Figure 106 — Test rig for boilers fitted with a horizontal terminal on a roof
- Figure 107 — Test rig for boilers fitted with a vertical terminal on a flat roof
- Figure 108 — Test rig for boilers fitted with a vertical terminal on a pitched roof
- Figure 110 — Down draft test for Type C7 boilers
- Figure 111 — Test configuration for determining floor temperature
- Figure 112 — Thermocouple configuration for measuring surface temperatures on test floor
- 102 Listing of tables and numbers
- 103 Annexes
- Annex V (informative) Standards replaced by this standard in combination with part 1"
- Table V.1"
- Annex XA (normative) Test apparatus for type C2 boilers"
- Annex XB (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 XC (informative) Variations in gas quality"
- XC.1 Introduction
- Figure XC.1
- XC.2 Considerations if boilers are intend to be used with larger variations in the gas quality
- XC.2.1 Specification of the acceptable variations
- XC.2.2 Impact of the claimed range around a set value for the normal distributed gases
- Figure XC.2
- XC.2.3 Impact of the declared values
- XC.2.4 Relation between the RG, the DLG and the ELG
- XC.2.5 Self adapting appliances
- Annex XD (informative) Example on calculation of common duct system for type C(11) boilers
- 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 Requirements of COMMISSION REGULATION (EU) No 813/2013 of 2 August 2013 implementing Directive 2009/125/EC of the European Parliament and of the Council with regard to ecode...
- Annex ZD (informative) !Relationship between this European Standard and the Requirements of COMMISSION DELEGATED REGULATION (EU) No 811/2013 of 18 February 2013 supplementing Directive 2010/30/EU of the European Parliament and of the Council with re...
- Bibliography [Go to Page]