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BS EN 298:2022 – TC 2023

$280.87

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

Published By Publication Date Number of Pages
BSI 2023 168
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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
95 undefined
103 1 Scope
2 Normative references
104 3 Terms and definitions
113 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
114 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
115 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
116 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
117 6.6.4.3 Second fault
6.6.4.4 Faults during lock-out or safety shutdown
118 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
119 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
120 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
121 7.101.2.2 Safety actions
122 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
123 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
124 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
125 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
126 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
130 7.101.5 Lock-out function
7.101.6 HTO detector
8 Electrical requirements
8.1 General
8.2 Protection by enclosure
131 9 Electromagnetic compatibility (EMC)
9.1 Protection against environmental influences
132 9.2 Supply voltage variations below 85 % of rated voltage
9.3 Voltage dips and interruptions
133 9.4 Supply frequency variations
9.5 Surge immunity tests
134 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
135 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
137 10.3 Warning notice
138 Annex A (informative)Abbreviations and symbols
139 Annex B (informative)Leak-tightness tests for gas controls − volumetric method
140 Annex C (informative)Leak-tightness tests for gas controls − pressure loss method
141 Annex D (normative)Calculation of pressure loss into leakage rate
142 Annex E (normative)Electrical/electronic component fault modes
144 Annex F (normative)Additional requirements for safety accessories and pressure accessories as defined in EU Directive 2014/68/EU
145 Annex G (normative)Materials for pressurized parts
146 Annex H (informative)Additional materials for pressurized parts
147 Annex I (normative) Requirements for controls used in DC supplied burners and appliances burning gaseous or liquid fuels
149 Annex J (normative) Method for the determination of a Safety Integrity Level (SIL)
150 Annex K (normative) Method for the determination of a Performance Level (PL)
151 Annex L (informative)Relationship between Safety Integrity Level (SIL) and Performance Level (PL)
152 Annex M (normative) Reset functions
153 Annex N (informative)Guidance document on Environmental Aspects
154 Annex O (normative)Seals of elastomer, cork and synthetic fibre mixtures
155 Annex AA (informative)Functional characteristics of automatic burner control systems, to be given by the appliance standard
156 Annex BB (informative)Fault modes of flame sensors
158 Annex CC (informative)Functional diagrams of automatic burner control systems for oil
CC.1 Symbols
159 CC.2 Explanations
CC.3 Functional diagrams – Normal operation
161 CC.4 Functional diagrams – protective response in case of abnormal operation in the application
163 Annex ZA (informative)Relationship between this European Standard and the essential requirements of Directive 2009/142/EC aimed to be covered
164 Annex ZB (informative)Relationship between this European Standard and the essential requirements of Regulation (EU) 2016/426 aimed to be covered
165 Annex ZC (informative)Relationship between this European Standard and the essential requirements of Directive 2014/68/EU aimed to be covered
BS EN 298:2022 - TC 2023
$280.87