BS 5440-1:2000:2005 Edition
$215.11
Installation and maintenance of flues and ventilation for gas appliances of rated heat input not exceeding 70 kW net (1st, 2nd and 3rd family gases) – Specification for installation and maintenance of flues
| Published By | Publication Date | Number of Pages |
| BSI | 2005 | 94 |
PDF Catalog
| PDF Pages | PDF Title |
|---|---|
| 1 | BRITISH STANDARD |
| 2 | Committees responsible for this British Standard |
| 3 | Contents |
| 7 | 1 Scope 1.1 Equipment 1.2 Competency |
| 8 | 2 Normative references 3 Definitions appliance compartment balanced compartment balanced-flue appliance |
| 9 | bathroom branched flue system builder’s opening chimney chimney liner chimney plate closed flue system common flue system condensate drain condensate-free length condensate pipe condensing appliance connecting flue pipe |
| 10 | decorative fuel effect gas appliance draught break draught diverter equivalent height effective height – only for gas fires and combined gas fire/back boiler units fan-diluted flue system fanned draught flue system fireplace recess flat roof flue flue break flue lining |
| 11 | flue pipes flue system individual flue system Installation instructions appliance manufacturer’s instructions flue and chimney manufacturer’s instructions leisure accommodation vehicle main flue natural draught flue system |
| 12 | open flue system open-flued appliance pluming room-sealed appliance residential park home secondary flue secondary flue height secondary flue length Se-duct shared flue or duct system shower room subsidiary flue |
| 13 | terminal terminal guard termination U-duct 4 Preliminary design considerations 4.1 Types of flue system |
| 14 | Classification of gas appliances according to flue types – from CEN CR 1749 (Common types in the UK are shown with an asterisk *) (> denotes fan downstream of draught divertor) |
| 16 | Typical appliances Types A and B, classification to CR 1749 |
| 17 | Typical appliance Types C |
| 18 | Typical appliance Types C3 and C7 classification to PD 6579 (CR 1749) |
| 19 | 4.2 Flue termination |
| 20 | Open flue terminal locations for pitched roofs |
| 21 | Open flue terminal locations on flat roofs |
| 22 | Open flue terminal locations on flat roofs (continued) |
| 23 | Open flue terminal locations near adjacent structures or buildings |
| 24 | Open flue terminal locations near structure, windows and openings on pitched roofs 4.3 Terminal guards |
| 25 | 4.4 Fire precautions 4.5 Installations in bedrooms 4.6 Installations in bathrooms or shower rooms 4.7 Instantaneous water heaters 4.8 #Cupboards and compartments in bathrooms, shower rooms or bedrooms 4.9 Garages and other hazardous areas |
| 26 | 4.10 Radon gas protection 4.11 Passive stack ventilation 4.12 Exchange of information and planning |
| 27 | 5 Individual open flue: natural draught (for Types B11, B12, B13 appliances) 5.1 Design |
| 28 | Typical methods of using a flue liner in a masonry chimney installation serving a gas appliance, other than a back boiler |
| 29 | Installation of a gas fire and combined back boiler using a back boiler enclosure and prefabricated chimney/flue system |
| 30 | Installation of a gas fire and combined back boiler using a back boiler enclosure and prefabricated chimney/flue system (continued) |
| 33 | Location of roof mounted terminals for individual natural draught open flue systems (minimum height of base of terminal) |
| 34 | Condensate-free lengths of individual open flue used with a gas fire |
| 37 | Maximum lengths for condensate-free flues for appliances other than gas fires |
| 38 | Appliance/chimney combinations which require the chimney to be lined Minimum void dimensions required below appliance connections |
| 40 | 5.2 Installation |
| 41 | Boiler connections to existing brick chimney |
| 44 | 5.3 Commissioning |
| 47 | 5.4 Maintenance 6 Individual open flue: fanned draught (for Types B 6.1 Design |
| 49 | 6.2 Installation 6.3 Commissioning Minimum flow rates for fanned flues |
| 50 | 6.4 Maintenance 7 Shared open flue: natural draught (for Types B 7.1 Design |
| 51 | Appliances discharging by way of subsidiary flues into a main flue |
| 52 | Shared flue systems and flue block types |
| 53 | 7.2 Installation 7.3 Maintenance 8 Balanced flue: natural draught (for Type C 8.1 General 8.2 Installation |
| 54 | Shielding of plastics gutters |
| 55 | 8.3 Installation checks 8.4 Maintenance |
| 56 | 9 Room sealed: fanned draught 9.1 Design options 9.2 Installation |
| 58 | 9.3 Installation checks 9.4 Maintenance |
| 59 | 10 Balanced compartment 10.1 General 10.2 Design Balanced compartment air inlet duct sizing |
| 60 | 10.3 Appliance compartment construction 10.4 Temperature effects 10.5 Termination 10.6 Commissioning 10.7 Maintenance |
| 61 | 11 Shared room-sealed: (for Types C 11.1 Design Normal Se-duct block sizes |
| 62 | Balanced compartment installations 11.2 Sizing 11.3 Termination design and location |
| 63 | 11.4 Inspection 11.5 Appliance selection and installation |
| 64 | Se-duct sizes for continuously burning appliances (e.g. boilers, gas fires) in flats |
| 65 | Shared room-sealed systems |
| 66 | Se-duct sizes for combinations of instantaneous water heaters (30 kW input rating) and continuously burning appliances (e.g., boilers, gas fires) in flats 11.6 Commissioning |
| 67 | 11.7 Maintenance 12 Special categories of flue system 12.1 Flue systems for use with condensing appliances |
| 69 | 12.2 Open flue systems without a draught diverter (for Type B2 appliances) |
| 70 | 12.3 Type C7 (“Vertex”) flues 12.4 Other open flue fanned draught systems 12.5 #Categories of flue system not covered by 12.1 to 12.4$ |
| 71 | (informative) Calculation method for flue sizing (informative) Calculation method for flue sizing This annex provides a procedure for estimating whether a given flue design is likely to ensure full clearance of combustion products. |
| 72 | Resistance factors for use in calculating equivalent heights (Use specific factors from flue or chimney manufacturer’s instructions where possible) Table A.1 gives resistance factors for common flue system components for use in formula. Table A.2 contains the appropriate inlet and outlet flue resistances. |
| 73 | Inlet and outlet resistances Minimum equivalent heights needed |
| 75 | Worked example 1 |
| 76 | Worked example 2 |
| 77 | (informative) Designation system used in European Chimney Standards (informative) Designation system used in European Chimney Standards Defining characteristics Common applications of metal chimneys for gas appliances and their equivalent designations |
| 78 | (normative) Flue terminal positions (normative) Flue terminal positions Minimum dimensions of flue terminal positions (all types) |
| 79 | Flue terminal positions |
| 80 | Example of how terminal position is measured |
| 81 | Example of how terminal position is measured (continued) |
| 82 | (informative) Guidance on the design and installation of flue block systems (informative) Guidance on the design and installation of flue block systems General When designing and installing a gas flue block system it is essential to ensure that: Design considerations |
| 83 | Gas flue blocks |
| 84 | Typical flue block systems (general arrangement) |
| 85 | Bonded gas flue block system for timber frame construction |
| 86 | Typical construction details for gas flue block systems in internal walls |
| 87 | Typical construction details for gas flue block systems in external walls |
| 88 | Temperature effects Termination Installation of the gas flue blocks |
| 89 | Jointing material Gas flue block installations projecting into cavity wall construction Flue pipe system installation in roof space connecting to the termination |
| 90 | Checking the gas flue blocks during and after installation |
| 91 | (informative) Checking of case seals and the general integrity of room-sealed fan assisted positive pressure gas appliances (informative) Checking of case seals and the general integrity of room-sealed fan assisted positive pressure gas appliances Checklist for checking of case seals and the general integrity of room-sealed fan assisted positive pressure gas appliances$ |
