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BS EN 267:2020 Forced draught burners for liquid fuels, 2020
- undefined
- 1 Scope
- 2 Normative references
- 3 Terms and definitions [Go to Page]
- 3.1 General definitions
- 3.2 Fuel flow rate and heat input
- 3.3 Combustion chamber, burner head and test rig
- 3.4 Composition of the gaseous combustion products
- 3.5 Adjusting, control and safety devices
- 3.6 Sequencing
- 3.7 Diagrams
- 4 Classification, constructional and operational requirements – safety requirements and/or protective measures [Go to Page]
- 4.1 Types of atomization [Go to Page]
- 4.1.1 Mechanical atomization by pressurization of the combustion liquid
- 4.1.2 Atomization by auxiliary fluid
- 4.2 Methods of control of automatic or semi-automatic oil burners [Go to Page]
- 4.2.1 On-off control (single stage burner)
- 4.2.2 Multi-stage control (two and multi-stage burner)
- 4.2.3 Modulating control (modulating burner)
- 4.3 Means of ignition [Go to Page]
- 4.3.1 Automatic electric ignition [Go to Page]
- 4.3.1.1 General
- 4.3.1.2 Ignition by controlled spark
- 4.3.1.3 Ignition by non-controlled spark
- 4.3.2 Automatic ignition with liquid or gaseous fuels [Go to Page]
- 4.3.2.1 General
- 4.3.2.2 Ignition by controlled ignition burner
- 4.3.2.3 Ignition by non-controlled ignition burner
- 4.4 Construction [Go to Page]
- 4.4.1 General
- 4.4.2 Design [Go to Page]
- 4.4.2.1 Design related to combustion
- 4.4.2.2 Mechanical safety and stability
- 4.4.3 Accessibility for maintenance and use
- 4.4.4 Soundness
- 4.4.5 Materials
- 4.4.6 Mounting
- 4.4.7 Connections
- 4.4.8 Pressure test points
- 4.5 Equipment [Go to Page]
- 4.5.1 Motors, fans and movable parts
- 4.5.2 Electrical safety
- 4.5.3 Air flow control device
- 4.5.4 Fuel line components [Go to Page]
- 4.5.4.1 General
- 4.5.4.2 Manually operated shut-off valve
- 4.5.4.3 Filter and venting device
- 4.5.4.4 Fuel pressure or flow adjustment device
- 4.5.4.5 Safety shut-off devices
- 4.5.5 Fuel preheating [Go to Page]
- 4.5.5.1 General
- 4.5.5.2 Heat sources
- 4.5.5.3 Preheating temperature
- 4.5.5.4 Control of preheating temperature
- 4.5.5.5 Pressurized preheaters
- 4.5.6 Ignition device [Go to Page]
- 4.5.6.1 General
- 4.5.6.2 Flame detector device
- 4.5.6.3 Air proving device
- 4.5.6.4 Fuel/air ratio control devices
- 4.5.7 Automatic burner control unit
- 4.6 Functional and operational requirements [Go to Page]
- 4.6.1 General function requirements [Go to Page]
- 4.6.1.1 General
- 4.6.1.2 Burner start-up
- 4.6.1.3 Pre-purge
- 4.6.2 Ensuring adequate oil pre-heating
- 4.6.3 Start heat input and safety times
- 4.6.4 Non-volatile lock-out, recycling and ignition restoration of the oil burner
- 4.6.5 Start gas ignition
- 4.6.6 Main burner ignition
- 4.6.7 Energizing of the safety shut-off valve for the oil supply
- 4.6.8 Flame failure response time
- 4.6.9 Total closing time
- 4.6.10 Burner shut-down [Go to Page]
- 4.6.10.1 General
- 4.6.10.2 Protection of the oil and air supply
- 4.6.11 Resistance of the burner to over-heating
- 4.6.12 Temperatures of the control and safety devices
- 4.6.13 Surface temperature
- 4.6.14 Ignition, operation and flame stability
- 4.6.15 Heat input range of the burner
- 4.6.16 Dual-fuel burner
- 4.6.17 Remote reset from lock-out
- 4.7 Working diagram and test diagram [Go to Page]
- 4.7.1 Working diagram
- 4.7.2 Test diagram
- 4.7.3 Diagrams
- 4.7.4 Determination of the flame stability and safe range of operation
- 4.8 Combustion products quality [Go to Page]
- 4.8.1 Combustion
- 4.8.2 Measurements
- 4.8.3 Smoke number (see Annex A)
- 4.8.4 Unburned hydrocarbons (see Annex D)
- 4.8.5 Emission classes for NOX and CO [Go to Page]
- 4.8.5.1 General
- 4.8.5.2 Heat input ≤ 400 kW (ErP)
- 4.8.6 Starting characteristics
- 4.8.7 Combustion quality of the combustion products for other liquid fuels
- 4.8.8 Excess air ratio λ
- 4.9 Machine safety requirements and/or protective measures
- 5 Testing [Go to Page]
- 5.1 General [Go to Page]
- 5.1.1 Verification of burner design and combustion testing
- 5.1.2 Verification of machine safety
- 5.2 Test room
- 5.3 Test rig [Go to Page]
- 5.3.1 General
- 5.3.2 Test rig ≤ 2,4 MW heat input
- 5.3.3 Test rig > 2,4 MW heat input
- 5.4 Measuring equipment [Go to Page]
- 5.4.1 General
- 5.4.2 Determination of the CO2 or O2 as well as NOx, CO and CxHy contents of the combustion gases
- 5.4.3 Determination of the smoke number
- 5.5 Measuring accuracy [Go to Page]
- 5.5.1 Measurement accuracy of the measuring devices
- 5.5.2 Measurement accuracy during test
- 5.6 Test conditions [Go to Page]
- 5.6.1 Fuel to be used
- 5.6.2 Testing
- 5.7 Test programme [Go to Page]
- 5.7.1 Structural testing
- 5.7.2 Functional tests [Go to Page]
- 5.7.2.1 General
- 5.7.2.2 Start-up
- 5.7.2.3 Pre-purge
- 5.7.2.4 Ensuring adequate oil pre-heating
- 5.7.2.5 Start-up heat input
- 5.7.3 Starting test
- 5.7.4 Ignition
- 5.7.5 Safety times [Go to Page]
- 5.7.5.1 General
- 5.7.5.2 Safety time during operation
- 5.7.5.3 Failure to ignite
- 5.7.5.4 Total closing time
- 5.7.6 Auxiliary electricity consumption (ErP)
- 5.7.7 Sound power level, Lwa (ErP)
- 5.7.8 Tests to be carried out on soundness and devices [Go to Page]
- 5.7.8.1 External soundness
- 5.7.8.2 Temperature of the control and safety devices
- 5.7.9 Tests to be carried out on the test diagrams [Go to Page]
- 5.7.9.1 Setting and duration
- 5.7.9.2 Tests at test point Hp1
- 5.7.9.3 Tests at test point Hp2
- 5.7.9.4 Tests at test point Hp3
- 5.7.9.5 Tests at test point 1
- 5.7.9.6 Tests at test point 4
- 5.7.9.7 Tests at test point 5
- 5.7.9.8 Tests at test point Hp6
- 5.7.9.9 Summary
- 5.7.9.10 Functional test
- 5.7.10 Result of the completed tests, test report
- 5.7.11 Electrical voltage conditions
- 5.7.12 Testing during continuous operation in the case of multistage or modulating control burners
- 5.7.13 Burners with separate fan
- 5.8 Replacement of individual parts and equivalent components
- 6 Marking and labelling [Go to Page]
- 6.1 General
- 6.2 Data plate
- 6.3 Other marking
- 6.4 Instructions for installation, adjustment, maintenance and operation
- 6.5 Packaging
- Annex A (normative)Smoke number [Go to Page]
- A.1 Apparatus
- A.2 Smoke measuring
- A.3 Determination of the smoke number
- Annex B (normative)Determination of combustion characteristics — Carbon monoxide and nitrogen oxides, conversion and corrections [Go to Page]
- B.1 CO content (), calculation from ml/m3 into mg/kWh
- B.2 NOx content (), calculation from ml/m3 into mg/kWh
- B.3 Correction for the influence of combustion air temperature and humidity on NOx emissions QNOx
- B.4 Correction of the influence of the nitrogen content of fuel oil in case of NOX-emissions
- B.5 NOX mean value for evaluating the NOX classes
- B.6 Other conversion factors for emissions, calculated from ml/m3 into mg/m3 at 3 % O2 reference flue gas conditions
- Annex C (informative)Void
- Annex D (normative)FID measuring method for recording the unburned hydrocarbons [Go to Page]
- D.1 Measuring system
- D.2 Starting
- Annex E (informative)Conformity evaluation [Go to Page]
- E.1 Test laboratories and test samples, procedure [Go to Page]
- E.1.1 Test laboratories
- E.1.2 Test samples
- E.2 Types of test and test documents for oil burners [Go to Page]
- E.2.1 Type test
- E.2.2 Type test in the overall system
- E.2.3 Drawing test
- E.2.4 Supplementary test
- E.2.5 Test documentation for oil burners
- Annex F (informative)Examples for equipping of burners [Go to Page]
- F.1 Burners ≤ 400 kW
- F.2 Burners > 400 kW
- Annex G (informative)Other fuels
- Annex H (informative)Specific additional requirements and limitations for use of EN 267 burners for industrial applications [Go to Page]
- H.1 Pre-heating of the combustion air
- H.2 Continuous working of the forced draught fan
- H.3 Variable excess of combustion air
- H.4 Burner with spark ignition
- H.5 Air filtering
- H.6 Electrical equipment and EMC-compatibility
- Annex I (informative)Check of the air proving device
- Annex J (normative)Machine related hazards - additional safety requirements and/or protective measures) [Go to Page]
- J.1 General
- J.2 List of significant hazards
- J.3 Safety requirements and /or protective measures [Go to Page]
- J.3.1 General
- J.3.2 Additional requirements [Go to Page]
- J.3.2.1 Mechanical safety, stability and control devices
- J.3.2.2 Motors, fans and movable parts
- J.3.2.3 Electrical safety
- J.3.2.4 Noise reduction
- J.4 Verification of machine safety requirements and/or protective measures
- J.5 Information for use [Go to Page]
- J.5.1 General
- J.5.2 Instructions for installation, adjustment, maintenance
- Annex K (normative)Additional requirements for burners with pressurized parts and burners firing pressurized bodies as defined in the Pressure Equipment Directive (PED) 2014/68/EU [Go to Page]
- K.1 General
- K.2 Pressurized parts [Go to Page]
- K.2.1 Design
- K.2.2 Materials
- K.2.3 Permanent joints
- K.3 Electrical safety and fuel line components [Go to Page]
- K.3.1 Electrical safety
- K.3.2 Fuel line components
- K.4 Air proving device
- K.5 Automatic burner control unit
- K.6 General functions requirements
- K.7 Protection of the oil and air supply
- K.8 External safety limiter
- K.9 Design according to Annex L in conjunction with EN 602041:2006 [Go to Page]
- K.9.1 General
- K.9.2 Pressure control
- K.9.3 Burner control and flame detection
- K.9.4 Safe shut-off of the oil supply
- K.9.5 Fuel/air ratio control
- K.9.6 Integration of the superior safety equipment of the boiler and of the firing system
- K.10 Consideration: Safety life cycle
- K.11 Tests of pressurized parts [Go to Page]
- K.11.1 Component pressure strength test
- K.11.2 Component design mechanical deformation test
- K.11.3 Component design welded joint test
- K.11.4 External soundness
- K.12 Marking [Go to Page]
- K.12.1 Data plate
- K.12.2 Other marking
- K.13 Instructions for installation, adjustment, maintenance and operation
- Annex L (normative)Electrical requirements – modifications to EN 60204-1 [Go to Page]
- L.1 Scope
- L.2 Normative references
- L.3 Terms and definitions [Go to Page]
- L.3.1 Protective system
- L.3.2 Safety device
- L.3.3 Sensor
- L.3.4 Protective equipment
- L.3.5 Actuating element
- L.3.6 Control system
- L.4 General requirements [Go to Page]
- L.4.1 General
- L.4.2 Selection of equipment
- L.4.3 Electrical supply
- L.4.4 Physical environment and operating condition [Go to Page]
- L.4.4.1 General
- L.4.4.2 Electromagnetic compatibility (EMC)
- L.4.4.3 Ambient air temperature
- L.4.4.4 Humidity
- L.4.4.5 Altitude
- L.4.4.6 Contaminants
- L.4.4.7 Ionizing and non-ionizing radiation
- L.4.4.8 Vibration, shock, and bump
- L.4.4.9 Equipment used in flammable atmospheres
- L.5 Incoming supply conductor terminations and devices for disconnecting and switching off
- L.6 Protection against electric shock [Go to Page]
- L.6.1 General
- L.6.2 Protection against direct contact
- L.7 Protection of equipment
- L.8 Equipotential bonding
- L.9 Control circuits and control functions [Go to Page]
- L.9.1 Control circuits [Go to Page]
- L.9.1.1 Control circuit supply
- L.9.1.2 Control circuit voltages
- L.9.2 Control functions [Go to Page]
- L.9.2.1 Start functions
- L.9.3 Protective interlocks
- L.9.4 Control functions in the event of failure (Protective system) [Go to Page]
- L.9.4.1 General requirements
- L.9.4.2 Measures to minimize risk in the event of failure
- L.9.4.3 Protection against maloperation due to earth faults, voltage interruptions and loss of circuit continuity
- L.9.4.4 Classification of protective systems
- L.9.4.5 Safety lifecycle for protective systems
- L.9.4.6 Determination of the safety level (PL / SIL) for protective functions
- L.9.4.7 Hardware design of protective systems
- L.9.4.8 Application software for PLC based protective systems
- L.9.4.9 Installation and commissioning
- L.9.4.10 Safety validation of protective systems
- L.9.4.11 Modification and retrofit
- L.10 Operator interface and machine-mounted control devices-
- L.11 Electrical equipment (Controlgear: location, mounting, and enclosures) [Go to Page]
- L.11.1 Degrees of protection
- L.11.2 Access to controlgear
- L.11.3 Creepage distances and clearances
- L.11.4 Transformers
- L.11.5 Switching devices
- L.11.6 Trace heating systems
- L.12 Conductors and cables
- L.13 Wiring practices [Go to Page]
- L.13.1 Conductors of different circuits
- L.14 Electric motors and associated equipment
- L.15 Accessories and lighting [Go to Page]
- L.15.1 Accessories
- L.15.2 Local lighting of the machine and equipment
- L.16 Marking, warning signs and reference designations
- L.17 Technical documentation
- L.18 Verification
- Annex M (normative)Equipment to increase the efficiency of the burner - boiler installation
- Annex N (informative)Electrical interfaces for burners
- Annex O (informative)Environmental checklist EN 267
- Annex P (informative)Guide for the applicability of the different standards on electrical safety
- Annex Q (informative)Verification procedures for market surveillance purposes (ErP) [Go to Page]
- Q.1 General
- Q.2 Minimisation of the influence of the measurement procedure
- Q.3 Verification of the declared parameters
- Annex ZA (informative)Relationship between this European Standard and the ecodesign requirements of Commission Regulation (EU) No 813/2013 aimed to be covered [Go to Page]
