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BS EN 298:2022

BS EN 298:2022

$215.11

Automatic burner control systems for burners and appliances burning gaseous or liquid fuels

Published By Publication Date Number of Pages
BSI 2022 74
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EN 13611:2019, Clause 1 is replaced by the following: This document specifies the safety, design, construction and performance requirements, and testing for automatic burner control systems, programming units, flame detector devices and High Temperature Operation (HTO) detectors, intended for use with gas and oil burners and gas and oil burning appliances, with or without fans and similar use. This document is applicable to automatic burner control systems that include additional functions. This document is not applicable to automatic burner control systems utilizing thermo-electric flame supervision devices. NOTE Standards for burners, appliances or processes which use automatic burner control systems, programming units, flame detectors or HTO detectors can override the requirements of this document.

PDF Catalog

PDF Pages PDF Title
2 undefined
10 1 Scope
2 Normative references
11 3 Terms and definitions
20 4 Classification
4.1 Classes of control
4.2 Groups of control
4.3 Classes of control functions
4.4 Types of DC supplied controls
5 Test conditions and uncertainty of measurements
21 6 Design and construction
6.1 General
6.2 Mechanical parts of the control
6.3 Materials
6.4 Gas connections
6.5 Electrical parts of the control
6.5.1 General
6.5.2 Switching elements
6.5.2.1 Requirements
22 6.5.2.2 Test of protecting measures against failure of switching elements
6.5.3 Electrical components
6.5.3.1 Performance of electrical components
6.5.3.2 Tests
6.5.3.3 Sensing element
6.5.3.4 Gas controls employing electrical components in the gas circuit
6.6 Protection against internal faults for the purpose of functional safety
6.6.1 Design and construction requirements
6.6.1.1 Fault avoidance and fault tolerance
6.6.1.2 Lock-out function
6.6.1.3 Reset device
6.6.1.4 Design documentation
23 6.6.2 Class A
6.6.3 Class B
6.6.4 Class C
6.6.4.1 Design and construction requirements
6.6.4.2 First fault
24 6.6.4.3 Second fault
6.6.4.4 Faults during lock-out or safety shutdown
25 6.6.5 Circuit and construction evaluation
7 Performance
7.1 General
7.2 Leak-tightness
7.3 Torsion and bending
7.4 Rated flow rate
7.5 Durability
7.5.1 Elastomers in contact with gas
7.5.2 Durability of marking
7.5.3 Resistance to scratching
7.5.4 Resistance to humidity
7.5.5 Lubricants in contact with gas
7.6 Performance tests for electronic controls
7.6.1 At ambient temperature
26 7.6.2 At minimum temperature
7.6.3 At maximum temperature
7.7 Long-term performance for electronic controls
7.7.1 General
7.7.2 Stress test
7.7.2.1 Thermal stress test
7.7.2.2 Vibration test
27 7.7.3 Long-term performance tests
7.8 Data exchange
7.101 Functional requirements
7.101.1 General
7.101.2 Program
7.101.2.1 General
28 7.101.2.2 Safety actions
29 7.101.2.3 Flame failure
7.101.2.4 Recycling
7.101.2.5 Ignition restoration
7.101.2.6 Supervision of other external devices during the start-up sequence
7.101.2.7 Start following safety shutdown
7.101.2.8 Inter-purge and inter-waiting time
30 7.101.2.9 Safety against flame simulation and extraneous light signals
7.101.2.10 Automatic burner control systems for air heaters (WLE)
7.101.3 Timing and operational sequences
7.101.3.1 General
31 7.101.3.2 Purge and waiting times for automatic burner control systems for gas
7.101.3.3 Pre-purge time for automatic burner control systems for oil
7.101.3.4 Special requirements for the operational sequences of pilot burners
7.101.3.5 Post-ignition on oil burners
32 7.101.3.6 Safety times
7.101.3.7 Flame failure response time
7.101.3.8 Reaction time to achieve safety shutdown
7.101.3.9 Reaction time to achieve lock-out
7.101.3.10 Flame failure detection time
7.101.4 Flame detector device/HTO detector
7.101.4.1 General
33 7.101.4.2 Special requirements for flame detector devices used on gas burners
7.101.4.3 Special requirements for flame detector devices used on oil burners
37 7.101.5 Lock-out function
7.101.6 HTO detector
8 Electrical requirements
8.1 General
8.2 Protection by enclosure
38 9 Electromagnetic compatibility (EMC)
9.1 Protection against environmental influences
39 9.2 Supply voltage variations below 85 % of rated voltage
9.3 Voltage dips and interruptions
40 9.4 Supply frequency variations
9.5 Surge immunity tests
41 9.6 Electrical fast transient/burst
9.7 Immunity to conducted disturbances induced by radio frequency fields
9.8 Immunity to radiated disturbances induced by radio frequency fields
9.9 Electrostatic discharge tests
42 9.10 Power frequency magnetic field immunity tests
9.11 Harmonics and interharmonics including mains signalling at a. c. power port, low frequency immunity tests
10 Marking, instructions
10.1 Marking
10.2 Instructions
44 10.3 Warning notice
45 Annex A (informative)Abbreviations and symbols
46 Annex B (informative)Leak-tightness tests for gas controls āˆ’ volumetric method
47 Annex C (informative)Leak-tightness tests for gas controls āˆ’ pressure loss method
48 Annex D (normative)Calculation of pressure loss into leakage rate
49 Annex E (normative)Electrical/electronic component fault modes
51 Annex F (normative)Additional requirements for safety accessories and pressure accessories as defined in EU Directive 2014/68/EU
52 Annex G (normative)Materials for pressurized parts
53 Annex H (informative)Additional materials for pressurized parts
54 Annex I (normative) Requirements for controls used in DC supplied burners and appliances burning gaseous or liquid fuels
56 Annex J (normative) Method for the determination of a Safety Integrity Level (SIL)
57 Annex K (normative) Method for the determination of a Performance Level (PL)
58 Annex L (informative)Relationship between Safety Integrity Level (SIL) and Performance Level (PL)
59 Annex M (normative) Reset functions
60 Annex N (informative)Guidance document on Environmental Aspects
61 Annex O (normative)Seals of elastomer, cork and synthetic fibre mixtures
62 Annex AA (informative)Functional characteristics of automatic burner control systems, to be given by the appliance standard
63 Annex BB (informative)Fault modes of flame sensors
65 Annex CC (informative)Functional diagrams of automatic burner control systems for oil
CC.1 Symbols
66 CC.2 Explanations
CC.3 Functional diagrams ā€“ Normal operation
68 CC.4 Functional diagrams ā€“ protective response in case of abnormal operation in the application
70 Annex ZA (informative)Relationship between this European Standard and the essential requirements of Directive 2009/142/EC aimed to be covered
71 Annex ZB (informative)Relationship between this European Standard and the essential requirements of Regulation (EU) 2016/426 aimed to be covered
72 Annex ZC (informative)Relationship between this European Standard and the essential requirements of Directive 2014/68/EU aimed to be covered

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BS EN 298:2022
$215.11