BSI 15/30315063 DC:2015 Edition
$13.70
BS EN 12067-2. Safety and control devices for burners and appliances burning gaseous or liquid fuels. Control functions in electronic systems. Part 2. Fuel/air ratio control/supervision of the electronic type
| Published By | Publication Date | Number of Pages |
| BSI | 2015 | 64 |
PDF Catalog
| PDF Pages | PDF Title |
|---|---|
| 4 | Contents Page |
| 8 | European foreword |
| 9 | Introduction |
| 10 | 1 Scope 2 Normative references 3 Terms and definitions |
| 16 | 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 6 Design and construction 6.1 General 6.1.101 General structure and feedback types |
| 17 | 6.2 Mechanical parts of the control 6.2.101 Use of non-metallic material 6.2.102 Special requirements for electromechanical actuators with position feed-back sensors |
| 18 | 6.3 Materials 6.4 Gas connections 6.5 Electronic parts of the control 6.5.1 General 6.5.2 Switching elements 6.5.3 Electrical components 6.5.3.1 Performance of electrical components 6.5.3.2 Test 6.5.3.3 Sensing element 6.5.3.4 Gas controls employing electrical components in the gas way 6.6 Protection against internal faults for the purpose of functional safety 6.6.1 Design and construction requirements 6.6.2 Class A 6.6.3 Class B |
| 19 | 6.6.4 Class C 6.6.4.1 Design and construction requirements 6.6.4.2 First fault 6.6.4.3 Second fault |
| 20 | 6.6.4.4 Faults during lock-out or safety shutdown 6.6.4.4.1 General 6.6.4.4.2 First fault introduced during lock-out or safety shutdown 6.6.4.4.3 Second fault introduced during lock-out or safety shutdown 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 7.6 Performance tests for electronic controls 7.6.1 At ambient temperature 7.6.2 At minimum temperature 7.6.3 At maximum temperature |
| 21 | 7.7 Long-term performance for electronic controls 7.7.1 General 7.7.1.101 Test requirements 7.7.1.102 Test conditions |
| 22 | 7.7.2 Stress test 7.7.2.1 Thermal stress test 7.7.2.2 Vibration test 7.7.3 Long term performance test 7.8 Data exchange 7.101 Functional requirements 7.101.1 General |
| 23 | 7.101.2 Interface to the automatic burner control system 7.101.3 Void 7.101.4 Start-up sequence 7.101.5 Ranges of operation |
| 24 | 7.101.6 Restart from safe state |
| 25 | 7.101.7 Accuracy requirements 7.101.7.1 General 7.101.7.2 Accuracy of ERC, ERS or ERT elements 7.101.7.3 Sensor(s) and actuators 7.101.7.4 Repeatability 8 Electrical requirements 8.1 General 8.2 Protection by enclosure 9 Electromagnetic compatibility (EMC) 9.1 Protection against environmental influences |
| 26 | 9.2 Supply voltage variations below 85 % of rated voltage 9.3 Voltage dips and interruptions 9.4 Supply frequency variations 9.5 Surge immunity test |
| 27 | 9.6 Electrical fast transient/burst 9.7 Immunity to conducted disturbances induced by radio frequency fields 9.8 Immunity to radiated fields induced by radio frequency fields 9.9 Electrostatic discharge test |
| 28 | 9.10 Power frequency magnetic field immunity test 9.11 Harmonics and interharmonics including mains signalling at a. c. power port, low frequency immunity tests 10 Marking, installation and operating instructions 10.1 Marking 10.2 Installation and operating instructions |
| 30 | 10.3 Warning Notice 10.101 Technical information for the safety after integration in the appliance |
| 31 | Annex A (informative) Abbreviations and Symbols |
| 32 | Annex B (informative) Leak-tightness test for gas controls − Volumetric method |
| 33 | Annex C (informative) Leak-tightness for gas controls − Pressure loss method |
| 34 | Annex D (normative) Calculation of pressure loss into leakage rate |
| 35 | Annex E (normative) Electrical/electronic component fault modes |
| 36 | Annex F (normative) Additional requirements for safety accessories and pressure accessories as defined in EU 97/23/EC |
| 37 | Annex G (normative) Materials for pressurized parts |
| 38 | Annex H (informative) Additional materials for pressurized parts |
| 39 | Annex I (normative) Requirements for controls used in DC supplied burners and appliances burning gaseous or liquid fuels |
| 40 | Annex J (normative) Method for the determination of a Safety integrity level (SIL) |
| 41 | Annex K (normative) Method for the determination of a Performance Level (PL) |
| 42 | Annex L (informative) Relationship between Safety Integrity Level (SIL) and Performance Level (PL) |
| 43 | Annex M (normative) Reset functions |
| 44 | Annex N (informative) Guidance document on Environmental Aspects |
| 45 | Annex O (normative) Seals of elastomer, cork and synthetic fibre mixtures |
| 46 | Annex AA (normative) Declaration for sensors, actuators and repeatability |
| 50 | Annex BB (normative) Special requirements for single position feed-back potentiometers in electromechanical actuators |
| 51 | Annex CC (informative) Overall fuel to air ratio accuracy |
| 52 | Annex DD (informative) Guideline for the integration of an ERC, ERS or ERT into the appliance DD.1 General DD.2 Integrational aspects |
| 53 | DD.3 Rules for mechanical integration DD.4 Rules for electrical integration DD.5 Rules for functional integration / functional tests of the appliance DD.6 Responsibility matrix |
| 54 | Annex EE (informative) Guideline for the definition of limits for safe operation of the appliance EE.1 Foreword EE.2 General Aspects EE.2.1 Principles EE.2.2 Risk of explosion EE.2.3 Risk of poisoning EE.2.4 Risk of fire EE.2.5 Risk of vibrations |
| 55 | EE.2.6 Other risks EE.3 Rules for the risk of explosion EE.3.1 General EE.3.2 ERC, ERS or ERT used in gas burners according to EN 676 EE.3.3 ERC, ERS or ERT used in other appliances |
| 57 | EE.4 Rules for the risk of poisoning |
| 59 | EE.5 Rules for the risk of fire EE.6 Rules for the risk of vibrations |
| 60 | Annex ZA (informative) Relationship between this European Standard and the Essential Requirements of EU Directive 2009/142/EC relating to appliances burning gaseous fuels |
| 62 | Annex ZB (informative) Relationship between this European Standard and the Essential Requirements of EU Directive 97/23/EC concerning pressure equipment |
| 63 | Bibliography |
