BSI 16/30350500 DC:2016 Edition
$13.70
BS ISO 23551-7. Safety and control devices for gas burners and gas-burning appliances. Particular requirements. Part 7. Pressure sensing controls
| Published By | Publication Date | Number of Pages |
| BSI | 2016 | 46 |
PDF Catalog
| PDF Pages | PDF Title |
|---|---|
| 8 | Foreword |
| 9 | Introduction |
| 11 | 1 Scope 2 Normative references 3 Terms and definitions |
| 17 | 4 Classification 4.1 Classes of control 4.2 Groups of control 4.101 Classes of control functions 5 Test conditions 6 Construction 6.1 General 6.2 Construction requirements 6.2.1 Appearance 6.2.2 Holes |
| 18 | 6.2.3 Breather holes 6.2.4 Screwed fastenings 6.2.5 Jointing 6.2.6 Moving parts 6.2.7 Sealing caps 6.2.8 Dismantling and reassembling for servicing and/or adjustment |
| 19 | 6.2.9 Auxiliary channels 6.2.101 Internal diameter of passages for pressure transmission 6.2.102 Manual reset 6.2.103 Sensed medium 6.2.104 PSC-S 6.3 Materials 6.3.1 General material requirements 6.3.2 Housing |
| 20 | 6.3.3 Springs 6.3.4 Resistance to corrosion and surface protection 6.3.5 Impregnation 6.3.6 Seals for glands for moving parts 6.3.101 Plastics materials 6.4 Gas connections 6.4.1 Making connections |
| 21 | 6.4.2 Connection sizes 6.4.3 Threads 6.4.4 Union joints 6.4.5 Flanges 6.4.6 Compression fittings 6.4.7 Nipples for pressure tests 6.4.8 Strainers 6.4.101 Connections for controls specified for air and combustion products 6.101 Electronic parts of the control 6.101.1 General |
| 22 | 6.101.2 Protection provided by the enclosure 6.101.3 Electrical components 6.102 Protection against internal faults to ensure functional safety |
| 23 | 7 Performance 7.1 General 7.2 Leak-tightness 7.2.1 Criteria 7.2.2 Test for leak-tightness |
| 24 | 7.3 Torsion and bending 7.3.1 General 7.3.2 Torsion 7.3.3 Bending moment |
| 25 | 7.3.4 Torsion and bending tests 7.4 Rated flow rate |
| 26 | 7.5 Durability 7.5.1 Elastomers in contact with gas 7.5.2 Resistance to lubricants 7.5.3 Resistance to gas 7.5.4 Marking resistance 7.5.5 Resistance to scratching 7.5.6 Resistance to humidity 7.6 Functional requirements 7.6.101 PSC-M and PSC-S |
| 27 | 7.6.102 EPSC |
| 31 | 7.7 Endurance 7.7.101 PSC-M and PSC-S class |
| 32 | 7.7.102 EPSC class |
| 33 | 8 EMC/Electrical requirements 8.1 Protection against environmental influences 8.1.1 General 8.1.2 Assessment Criterion I 8.1.3 Assessment Criterion II 8.2 Variations in supply voltage 8.3 Short-term voltage interruptions and drops 8.4 Variations in supply frequency 8.5 Surge immunity test |
| 34 | 8.6 Electrical fast transient/burst 8.7 Immunity to conducted disturbances 8.8 Immunity to radiated fields 8.9 Electrostatic discharge immunity test 8.10 Test for immunity to power-frequency magnetic field 8.11 Electrical requirements 8.11.101 General 8.11.102 Electrical equipment |
| 35 | 9 Marking, installation and operating instructions 9.1 Marking 9.2 Installation and operating instructions |
| 36 | 9.3 Warning notice |
| 37 | Annex A (informative) Leak-tightness test — Volumetric method |
| 38 | Annex B (informative) Leak-tightness test — Pressure-loss method |
| 39 | Annex C (normative) Conversion of pressure loss into leakage rate |
| 40 | Annex D (normative) Test for immunity to power-frequency magnetic fields |
| 41 | Annex E (normative) Specific regional requirements in European countries |
| 42 | Annex F (normative) Specific regional requirements in Canada and USA |
| 43 | Annex G (normative) Specific regional requirements in Japan |
| 44 | Annex AA (informative) Manufacturers declaration for EPSCs |
| 45 | Annex BB (normative) Electrical/electronic component fault modes |
| 46 | Bibliography |
