🔥🔥 Don’t Miss Out on Our End of Autumn Sale. If you have any questions, feel free to click the bottom right corner to contact our customer service..

Concat us[email protected]
Shopping Cart

No products in the cart.

🔍
BS EN 267:2020

BS EN 267:2020

$227.44

Forced draught burners for liquid fuels

Published By Publication Date Number of Pages
BSI 2020 122
PDF Format Searchable Printable Preview Now
Guaranteed Safe Checkout
Categories: ,

If you have any questions, feel free to reach out to our online customer service team by clicking on the bottom right corner. We’re here to assist you 24/7.
Email:[email protected]

This document specifies the terminology, the general requirements for the construction and operation of forced draught oil burners and also the provision of control and safety devices, and the test procedure for these burners.

This document applies to forced draught oil burners supplied with:

  • fuel based on first raffinates and their mixtures with biogenous liquid fuels having a viscosity at the burner inlet of 1,6 mm 2/s (cSt) up to 6 mm 2/s (cSt) at 20 °C, and

  • higher boiling petroleum based first raffinates (viscosity greater than 6 mm 2/s), that require preheating for proper atomization.

This document is applicable to:

  • single burners fitted to a single combustion chamber;

  • single burners fitted to an appliance with additional requirements;

NOTE When additional requirements which are not identified or specified in this standard apply, the specification of the required safety measures and/or protective devices and compliance with them is outside the scope of this standard.

  • single-fuel and dual-fuel burners when operating on oil only;

  • the oil function of dual-fuel burners designed to operate simultaneously on liquid and gaseous fuels, which, for the latter, the requirements of EN 676 also apply.

This document deals with all significant machine hazards, hazardous situations and events relevant to burners, when they are used as intended and under conditions of misuse which are reasonably foreseeable, see Annex J.

This document also deals with the additional requirements for the burners in the scope with pressurized parts and/or firing pressurized bodies, see Annex K.

This document specifies the requirements to ensure the safety during commissioning, start-up, operation, shut-down and maintenance.

This document deals also with forced draught burners intended to be used with biogenous liquid fuels, mixtures.

This document deals also with burners and their equipment to increase the total appliance efficiency, see Annex M.

PDF Catalog

PDF Pages PDF Title
2 undefined
9 1 Scope
2 Normative references
14 3 Terms and definitions
3.1 General definitions
15 3.2 Fuel flow rate and heat input
16 3.3 Combustion chamber, burner head and test rig
17 3.4 Composition of the gaseous combustion products
18 3.5 Adjusting, control and safety devices
19 3.6 Sequencing
22 3.7 Diagrams
23 4 Classification, constructional and operational requirements – safety requirements and/or protective measures
4.1 Types of atomization
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
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
4.3.1 Automatic electric ignition
4.3.1.1 General
4.3.1.2 Ignition by controlled spark
24 4.3.1.3 Ignition by non-controlled spark
4.3.2 Automatic ignition with liquid or gaseous fuels
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
4.4.1 General
4.4.2 Design
4.4.2.1 Design related to combustion
4.4.2.2 Mechanical safety and stability
25 4.4.3 Accessibility for maintenance and use
4.4.4 Soundness
4.4.5 Materials
26 4.4.6 Mounting
4.4.7 Connections
4.4.8 Pressure test points
4.5 Equipment
4.5.1 Motors, fans and movable parts
4.5.2 Electrical safety
27 4.5.3 Air flow control device
4.5.4 Fuel line components
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
29 4.5.5 Fuel preheating
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
4.5.6.1 General
30 4.5.6.2 Flame detector device
4.5.6.3 Air proving device
31 4.5.6.4 Fuel/air ratio control devices
32 4.5.7 Automatic burner control unit
4.6 Functional and operational requirements
4.6.1 General function requirements
4.6.1.1 General
4.6.1.2 Burner start-up
4.6.1.3 Pre-purge
33 4.6.2 Ensuring adequate oil pre-heating
4.6.3 Start heat input and safety times
34 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
4.6.10.1 General
35 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
36 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
4.7.1 Working diagram
37 4.7.2 Test diagram
4.7.3 Diagrams
38 4.7.4 Determination of the flame stability and safe range of operation
4.8 Combustion products quality
4.8.1 Combustion
39 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
4.8.5.1 General
40 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
41 4.9 Machine safety requirements and/or protective measures
5 Testing
5.1 General
5.1.1 Verification of burner design and combustion testing
5.1.2 Verification of machine safety
42 5.2 Test room
5.3 Test rig
5.3.1 General
5.3.2 Test rig ≤ 2,4 MW heat input
44 5.3.3 Test rig > 2,4 MW heat input
46 5.4 Measuring equipment
5.4.1 General
47 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
5.5.1 Measurement accuracy of the measuring devices
48 5.5.2 Measurement accuracy during test
5.6 Test conditions
5.6.1 Fuel to be used
49 5.6.2 Testing
5.7 Test programme
5.7.1 Structural testing
5.7.2 Functional tests
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
50 5.7.2.5 Start-up heat input
5.7.3 Starting test
51 5.7.4 Ignition
52 5.7.5 Safety times
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)
53 5.7.7 Sound power level, Lwa (ErP)
5.7.8 Tests to be carried out on soundness and devices
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
5.7.9.1 Setting and duration
5.7.9.2 Tests at test point Hp1
54 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
55 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
56 5.7.9.9 Summary
57 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
58 5.8 Replacement of individual parts and equivalent components
6 Marking and labelling
6.1 General
6.2 Data plate
6.3 Other marking
59 6.4 Instructions for installation, adjustment, maintenance and operation
60 6.5 Packaging
61 Annex A (normative)Smoke number
A.1 Apparatus
A.2 Smoke measuring
62 A.3 Determination of the smoke number
63 Annex B (normative)Determination of combustion characteristics — Carbon monoxide and nitrogen oxides, conversion and corrections
B.1 CO content (), calculation from ml/m3 into mg/kWh
64 B.2 NOx content (), calculation from ml/m3 into mg/kWh
65 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
66 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
67 Annex C (informative)Void
68 Annex D (normative)FID measuring method for recording the unburned hydrocarbons
D.1 Measuring system
D.2 Starting
69 Annex E (informative)Conformity evaluation
E.1 Test laboratories and test samples, procedure
E.1.1 Test laboratories
E.1.2 Test samples
E.2 Types of test and test documents for oil burners
E.2.1 Type test
E.2.2 Type test in the overall system
E.2.3 Drawing test
70 E.2.4 Supplementary test
E.2.5 Test documentation for oil burners
72 Annex F (informative)Examples for equipping of burners
F.1 Burners ≤ 400 kW
74 F.2 Burners > 400 kW
76 Annex G (informative)Other fuels
77 Annex H (informative)Specific additional requirements and limitations for use of EN 267 burners for industrial applications
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
78 Annex I (informative)Check of the air proving device
79 Annex J (normative)Machine related hazards – additional safety requirements and/or protective measures)
J.1 General
J.2 List of significant hazards
J.3 Safety requirements and /or protective measures
J.3.1 General
82 J.3.2 Additional requirements
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
83 J.5 Information for use
J.5.1 General
J.5.2 Instructions for installation, adjustment, maintenance
84 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
K.1 General
K.2 Pressurized parts
K.2.1 Design
85 K.2.2 Materials
K.2.3 Permanent joints
K.3 Electrical safety and fuel line components
K.3.1 Electrical safety
K.3.2 Fuel line components
86 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
87 K.8 External safety limiter
K.9 Design according to Annex L in conjunction with EN 602041:2006
K.9.1 General
K.9.2 Pressure control
88 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
89 K.11 Tests of pressurized parts
K.11.1 Component pressure strength test
90 K.11.2 Component design mechanical deformation test
K.11.3 Component design welded joint test
K.11.4 External soundness
K.12 Marking
K.12.1 Data plate
K.12.2 Other marking
K.13 Instructions for installation, adjustment, maintenance and operation
92 Annex L (normative)Electrical requirements – modifications to EN 60204-1
L.1 Scope
L.2 Normative references
L.3 Terms and definitions
L.3.1 Protective system
93 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
L.4.1 General
L.4.2 Selection of equipment
94 L.4.3 Electrical supply
L.4.4 Physical environment and operating condition
L.4.4.1 General
L.4.4.2 Electromagnetic compatibility (EMC)
95 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
96 L.5 Incoming supply conductor terminations and devices for disconnecting and switching off
L.6 Protection against electric shock
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
L.9.1 Control circuits
L.9.1.1 Control circuit supply
L.9.1.2 Control circuit voltages
97 L.9.2 Control functions
L.9.2.1 Start functions
98 L.9.3 Protective interlocks
L.9.4 Control functions in the event of failure (Protective system)
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
99 L.9.4.5 Safety lifecycle for protective systems
L.9.4.6 Determination of the safety level (PL / SIL) for protective functions
101 L.9.4.7 Hardware design of protective systems
104 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
105 L.10 Operator interface and machine-mounted control devices-
L.11 Electrical equipment (Controlgear: location, mounting, and enclosures)
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
106 L.11.6 Trace heating systems
L.12 Conductors and cables
L.13 Wiring practices
L.13.1 Conductors of different circuits
L.14 Electric motors and associated equipment
L.15 Accessories and lighting
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
107 Annex M (normative)Equipment to increase the efficiency of the burner – boiler installation
108 Annex N (informative)Electrical interfaces for burners
113 Annex O (informative)Environmental checklist EN 267
115 Annex P (informative)Guide for the applicability of the different standards on electrical safety
117 Annex Q (informative)Verification procedures for market surveillance purposes (ErP)
Q.1 General
Q.2 Minimisation of the influence of the measurement procedure
Q.3 Verification of the declared parameters
118 Annex ZA (informative)Relationship between this European Standard and the ecodesign requirements of Commission Regulation (EU) No 813/2013 aimed to be covered

Related products

BS EN 267:2020
$227.44