BS 5449:1990:2002 Edition
$189.07
Specification for forced circulation hot water central heating systems for domestic premises
| Published By | Publication Date | Number of Pages |
| BSI | 2002 | 46 |
General planning, design considerations, materials, appliances and components, installation and commissioning. Includes small bore and microbore systems, open systems and sealed systems.
PDF Catalog
| PDF Pages | PDF Title |
|---|---|
| 1 | BRITISH STANDARD |
| 2 | Committees responsible for this British Standard |
| 3 | Contents |
| 7 | Section 1. General 1 Scope 2 Definitions 2.1 heat emitters 2.2 boiler 2.3 central heating 2.4 whole house central heating 2.5 part house central heating 2.6 background central heating 2.7 combined system 2.8 immersion primary heater 2.9 smallbore heating system |
| 8 | 2.10 microbore heating system 2.11 open vented heating system 2.12 sealed heating system 2.13 designer 2.14 design heat requirement 2.15 ventilation heat loss 2.16 structural heat loss 2.17 calculated heat loss 2.18 pump overrun device 2.19 room-sealed appliance 2.20 open-flued appliance |
| 9 | 3 Exchange of information 3.1 Preliminary design information 3.2 Contractual specification and presentation of scheme |
| 11 | Section 2. Materials, appliances and components 4 General 5 Boilers 5.1 General 5.2 Sealed systems |
| 12 | 6 Pipes and pipe fittings 7 Safety valves |
| 13 | Section 3. Design considerations 8 General 8.1 8.2 9 Heating requirements 9.1 |
| 14 | Table 1 – Temperatures and ventilation rates Table 2 – Air change rates for rooms with open fires and flues up to 40 000 mm 9.2 10 Domestic hot water requirements |
| 15 | 11 Boilers 11.1 11.2 11.3 11.4 11.5 12 Chimney and flue 12.1 |
| 16 | 12.2 13 Velocity and pressure loss in circuits 13.1 13.2 14 Feed and expansion cistern (open vented systems only) 14.1 14.2 14.3 14.4 15 Feed and expansion pipe and open vent pipe for open systems 15.1 |
| 17 | 15.2 15.3 |
| 18 | Figure 1 – Diagrammatic arrangement of feed and expansion cistern installation |
| 19 | Figure 2 – Diagrammatic arrangement for feed and expansion and open vent pipes |
| 20 | 16 Sealed systems 16.1 16.2 16.3 Table 3 – Capacities of expansion vessels |
| 21 | 16.4 16.5 17 Venting 18 Heat emitters |
| 22 | 19 Valves 19.1 19.2 20 Thermal insulation 20.1 20.2 |
| 23 | Figure 3 – Sealed system filling and make-up |
| 24 | 21 Domestic hot water storage 21.1 21.2 21.3 22 System control 22.1 General considerations |
| 25 | 22.2 Timing controls 22.3 Temperature control of heating system |
| 26 | 22.4 Temperature control of stored domestic hot water 23 Draining 24 Delivery, storage and metering of fuel 24.1 Solid fuel |
| 27 | Table 4 – Solid fuel storage capacities 24.2 Gas 24.3 Liquefied petroleum gas 24.4 Fuel oil Table 5 – Fuel oil storage capacities 24.5 Electricity 25 Air supply 25.1 25.2 25.3 25.4 |
| 28 | 25.5 Table 6 – Air openings sizes in mm 26 Corrosion inhibitor |
| 29 | Section 4. Installation work on site 27 Boiler 27.1 27.2 28 Flueing and air supply 29 Condensate disposal 30 Circulation pipework 30.1 |
| 30 | Figure 4 – Limitations on notching and drilling in structural joists 30.2 30.3 |
| 31 | 30.4 31 Pipe fixings and supports 31.1 31.2 31.3 Table 7 – Piping support intervals 31.4 |
| 32 | 32 Heat emitters 33 Circulation pump 34 Indirect cylinder 35 Electrical work 36 Gas pipework 37 Oil pipework |
| 33 | Section 5. Commissioning 38 Filling 39 Boiler |
| 34 | 40 Balancing 41 Handing over |
| 35 | Appendix A Heat loss coefficients A.1 General A.2 Solid walls Table 8 A.3 Timber framed walls Table 9 |
| 36 | A.4 Cavity walls Table 10 A.5 Pitched roofs Table 11 |
| 37 | A.6 Windows Table 12 A.7 Ground floors Table 18 A.8 Party and partition walls |
| 38 | A.9 Intermediate floors Table 14 Table 15 |
| 39 | Appendix B Resistance to hot water flow Table 16 – Pressure loss per metre run due to flow of hot water through copper tubes |
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