BS 5440-1-2008 Flueing and ventilation nfor gas appliances of nrated input not nexceeding 70 kW net n(1st 2nd and 3rd nfamily gases) – nPart 1 Specification for installation nof ga.pdf

1、BS 5440-1:2008Flueing and ventilation for gas appliances of rated input not exceeding 70 kW net (1st, 2nd and 3rd family gases) Part 1: Specification for installation of gas appliances to chimneys and for maintenance of chimneysICS 91.060.40NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY CO

2、PYRIGHT LAWBRITISH STANDARDPublishing and copyright informationThe BSI copyright notice displayed in this document indicates when the document was last issued. BSI 2008ISBN 978 0 580 57065 0The following BSI references relate to the work on this standard:Committee reference GSE/30Draft for comment 0

3、7/30150793 DCPublication historyFirst published August 1978Second edition, February 1990Third edition, December 2000Fourth (present) edition, March 2008Amendments issued since publicationAmd. no. Date Text affectedBS 5440-1:2008 BSI 2008 iBS 5440-1:2008ContentsForeword v1 Scope 12 Normative referenc

4、es 23 Terms and definitions 44 Competence 95 General 95.1 Compatibility of appliances and chimneys 95.2 Chimney outlets 125.3 Chimneys for use with condensing appliances (open-flued and room-sealed) 135.4 Location of appliances 145.5 Passive stack ventilation 155.6 Exchange of information and planni

5、ng 155.7 Maintenance 166 Individual open-flued natural draught Types B11, B12, B13appliances 176.1 Design 176.2 Installation 316.3 Commissioning 346.4 Radon gas systems present 386.5 Maintenance 387 Individual open-flued fanned draught Types B14, B22, B23appliances and fanned draught chimneys 397.1

6、Design 397.2 Installation 417.3 Commissioning 417.4 Maintenance 428 Shared open flue chimney for natural draught Types B11, B12, B13appliances 428.1 Design 428.2 Installation 468.3 Maintenance 469 Room-sealed natural draught chimney configurations (balanced flue) for Type C11appliances 469.1 General

7、 469.2 Installation 479.3 Installation checks 489.4 Maintenance 4910 Room-sealed: fanned draught chimney configurations balanced flue (Type C12, C13, C32and C33) and non-balanced flue (Type C52, C53, C62and C63) appliances 4910.1 Design options 4910.2 Installation 5010.3 Installation checks 5310.4 M

8、aintenance 5311 Balanced compartment 5511.1 General 5511.2 Design 5611.3 Balanced compartment construction 5611.4 Temperature effects 5711.5 Terminals 57BS 5440-1:2008ii BSI 200811.6 Commissioning 5711.7 Maintenance 5712 Room-sealed Types C2and C4appliances for shared chimneys 5812.1 Selection and i

9、nstallation of a suitable chimney 5812.2 Terminal design and location 6512.3 Inspection 6612.4 Selection and installation of compatible appliances 6612.5 Commissioning 6812.6 Maintenance 6913 Special categories of chimney 7013.1 Chimneys for Type C7(“Vertex”) appliances 7013.2 Other open flue fanned

10、 draught chimneys 70AnnexesAnnex A (informative) Classifications 72Annex B (informative) Calculation method for flue sizing 80Annex C (normative) Chimney outlet positions 86Annex D (informative) Guidance on the design and installation of flue block systems in the UK 97Annex E (informative) Checking

11、of case seals and the general integrity of room-sealed fan assisted positive pressure gas appliances 107Annex F (normative) Design criteria for terminals for shared system chimneys 109Bibliography 110List of figuresFigure 1 Typical methods of using a flue liner in a masonry chimney installation serv

12、ing a gas appliance, other than a back boiler 18Figure 2 Installation of a gas fire and combined back boiler using a back boiler enclosure and prefabricated chimney: enclosure arrangement using a false chimney breast and closure panel 19Figure 3 Installation of a gas fire and combined back boiler us

13、ing a back boiler enclosure and prefabricated chimney: enclosure arrangement using a proprietary back boiler box 20Figure 4 Maximum lengths for condensate-free chimneys for appliances other than gas fires 25Figure 5 Boiler connections to existing brick chimney 30Figure 6 Flue block types and shared

14、chimney 45Figure 7 Balanced compartment installations 55Figure 8 Shared room-sealed systems 61Figure A.1 Typical appliances Types A and B, classification to PD CEN/TR 1749:2005 75Figure A.2 Typical appliance Types C, classification to PD CEN/TR 1749:2005 76Figure A.3 Typical appliance Types C3 and C

15、7, classification to PD CEN/TR 1749:2005 79Figure B.1 Worked example 1 84Figure B.2 Worked example 2 85Figure C.1 Open flue, natural draught chimney outlet locations for pitched roofs 87Figure C.2 Open flue, natural draught chimney outlet locations adjacent to structures on pitched roofs 88 BSI 2008

16、 iiiBS 5440-1:2008Figure C.3 Open flue or room-sealed, natural or fanned draught chimney outlet locations adjacent to windows or openings on pitched roofs 88Figure C.4 Open flue, natural draught chimney outlet locations on flat roofs 89Figure C.5 Open flue, natural draught chimney outlet locations n

17、ear adjacent structures or buildings 90Figure C.6 Room-sealed configuration outlet location on pitched roofs 90Figure C.7 Open flue, fanned draught chimney and room-sealed configuration outlet locations adjacent to structures on pitched roofs 91Figure C.8 Chimney outlet positions 91Figure C.9 Exampl

18、e of how a natural draught, room-sealed chimney configuration outlet position is measured 94Figure C.10 Example of how a fanned draught room-sealed chimney configuration outlet and a fanned draught open flue chimney outlet position is measured 95Figure C.11 Proximity of flue duct outlet to a boundar

19、y 96Figure D.1 Gas flue blocks 99Figure D.2 Typical flue block systems (general arrangement) 100Figure D.3 Bonded gas flue block system for timber frame construction 101Figure D.4 Typical construction details for gas flue block systems in internal walls 102Figure D.5 Typical construction details for

20、 gas flue block systems in external walls 102Figure E.1 Checklist for checking of case seals and the general integrity of room-sealed fan assisted positive pressure gas appliances 108Figure F.1 Permitted recirculation of combustion products 109List of tablesTable 1 Condensate-free lengths of individ

21、ual open flue used with a gas fire 24Table 2 Minimum void dimensions required below appliance connections 29Table 3 Appliance/chimney combinations which require the chimney to be lined 30Table 4 Minimum flow rates for fanned flues 42Table 5 Appliances discharging by way of subsidiary flue into a mai

22、n flue 44Table 6 Normal SE-duct block sizes in existing buildings 58Table 7 SE-duct sizes for continuously burning appliances (e.g. boilers, gas fires) in flats 59Table 8 SE-duct sizes for combinations of instantaneous water heaters (30 kW input rating) and continuously burning appliances (e.g. boil

23、ers, gas fires) in flats 60Table 9 Cross-sectional area for ducts in shared system chimneys used for condensing and non-condensing appliances (one appliance per storey) 64Table 10 Cross-sectional area for ducts in shared system chimneys used for condensing and non-condensing appliances (two applianc

24、es per storey) 65BS 5440-1:2008iv BSI 2008Table A.1 Classification of gas appliances used in the UK according to the method of evacuation of products of combustion (types) from PD CEN/TR 1749:2005 72Table A.2 Default values in accordance with BS EN 1443:2003 74Table B.1 Resistance factors for use in

25、 calculating equivalent heights (Use specific factors from flue or chimney manufacturers instructions where possible) 81Table B.2 Inlet and outlet resistances 82Table B.3 Minimum equivalent heights needed 82Table C.1 Minimum dimensions of open flue chimney outlet positions (refer to Figure C.8) 92Ta

26、ble C.2 Minimum dimensions of room-sealed chimney outlet positions (refer to Figure C.8) 93Summary of pagesThis document comprises a front cover, an inside front cover, pages i to vi, pages 1 to 112, an inside back cover and a back cover. BSI 2008 vBS 5440-1:2008ForewordPublishing informationThis pa

27、rt of BS 5440 is published by BSI and came into effect on 31 March 2008. It was prepared by Technical Committee GSE/30, Gas installations (1st, 2nd and 3rd family gases) to support and complement BS EN 15287-1 and BS EN 15287-2.SupersessionThis part of BS 5440 supersedes BS 5440-1:2000+A2:2005, whic

28、h is withdrawn.Information about this documentBS 5440 is published in parts as follows: Part 1: Specification for installation of gas appliances to chimneys and for maintenance of chimneys; Part 2: Specification for installation and maintenance of ventilation for gas appliances.This revision has bee

29、n undertaken for the following reasons.a) To acknowledge that European work on chimney standards has brought about the need to redefine chimney concepts and adopt common terminology consistent with the range of products used across the whole European Community. To align with European Standards, (the

30、 general requirements for which are given in BS EN 1443) where a chimney is treated as a structure containing a flue (the passageway) and might include a liner (inner wall), insulation and an outer wall. The common terminology in UK industry, which has regarded a chimney as a masonry structure gener

31、ally associated with solid fuel appliances, has been superseded. Attention is drawn to the definitions for chimney (3.9), connecting flue pipe (3.17), flue (3.28) and flue liner (3.31), air supply duct (3.1) and room-sealed chimney configuration (3.44).b) To recognize and refer to recent changes in

32、building legislation.c) To cover recent developments in appliance design, flue material and practical experience in the disposal of products of combustion by means of flues.d) To improve advice on flueing and ventilation installation practices and reduce occurrences of CO related incidents attributa

33、ble to flueing and ventilation for gas appliances.It is essential that the appropriate specifications/codes of practice are consulted on all aspects of appliance and flue installation.Use of this documentIt has been assumed in the preparation of this British Standard that the execution of its provis

34、ions will be entrusted to appropriately qualified and experienced people, for whose use it has been produced.BS 5440-1:2008vi BSI 2008This British Standard allows gas appliance and/or chimney manufacturers instructions to recommend a method of installation, testing, commissioning or maintenance whic

35、h differs in points of detail from this standard. This reference to manufacturers instructions is allowed only where it will result in at least an equivalent level of safety. In such circumstances, it is important that the manufacturers instructions are followed.Presentational conventionsThe provisi

36、ons of this standard are presented in roman (i.e. upright) type. Its requirements are expressed in sentences in which the principal auxiliary verb is “shall”.Commentary, explanation and general informative material is presented in smaller italic type, and does not constitute a normative element.Requ

37、irements in this standard are drafted in accordance with The BSI guide to standardization Section 2: Rules for the structure, drafting and presentation of British Standards, subclause 11.3.1, which states, “Requirements should be expressed using wording such as: When tested as described in Annex A,

38、the product shall .”. This means that only those products that are capable of passing the specified test will be deemed to conform to this standard.Contractual and legal considerationsThis publication does not purport to include all the necessary provisions of a contract. Users are responsible for i

39、ts correct application.Compliance with a British Standard cannot confer immunity from legal obligations.In particular, attention is drawn to the following statutory regulations.a) The gas safety regulations for the appropriate legislative region: Gas Safety (Installation and Use) Regulations 1998 1;

40、 Gas Safety (Installation and Use) Regulations (Northern Ireland) 2004 2.These control all aspects of the ways gas fired systems are installed, maintained and used, mainly in domestic and commercial premises, (e.g. offices, shops, hospitals, educational and other public buildings), and the classes o

41、f persons who might undertake gas work.b) The building regulations for the appropriate legislative region: Building Regulations for England and Wales 2000 3; Building Regulations (Northern Ireland) Statutory Rules 2000 4; Building Standards (Scotland) Regulations 1990 5; Building Regulations (Isle o

42、f Man) 2003 6.c) Gas Appliance (Safety) Regulations 1995 7.These control the supply of new gas appliances and specify the conditions required for CE marking.d) Gas Safety (Application) (Isle of Man) Order 1996 8. BSI 2008 1BS 5440-1:20081 ScopeThis part of BS 5440 specifies requirements for the inst

43、allation of gas appliances to chimneys, chimney installation work likely to be undertaken by gas engineers and operatives working under UK gas industry conditions and requirements for the maintenance of chimneys. It is applicable to open flue chimneys for Type B gas appliances and room-sealed chimne

44、y configurations for Type C gas appliances, each of rated input not exceeding 70 kW net (see Note 2 and Note 3), burning 1st, 2nd or 3rd family gases. It applies to chimneys of the natural draught or fanned draught type and is applicable to open flue chimneys and room-sealed chimneys supplied with t

45、he appliance as well as to those supplied separately.NOTE 1 Type B and Type C appliances are explained in Table A.1.It complements the requirements for the design, installation and commissioning of chimneys as required in BS EN 15287-1 and BS EN 15287-2 and requires extra details that are specific t

46、o the UK gas industry. This is kept in perspective by quoting some details of BS EN 15287-1 and BS EN 15287-2.It specifies the following: requirements for the selection of the appropriate flueing option for gas appliances in the UK; requirements for the installation of gas appliances to new chimneys

47、, or chimney configurations; requirements for the installation of gas appliances to existing chimneys or chimney configurations; requirements for the installation of appliances which carry a CE mark and for which the manufacturers instructions are available to the installer; requirements installatio

48、n of appliances which do not carry a CE mark and used/second-hand appliances for which the manufacturers instructions are available to the installer.This part of BS 5440 is applicable to: complete chimney and all chimney components from the appliance connection to the discharge point into outside ai

49、r; the installation of gas appliances to existing chimneys that were intended originally for appliances burning other fuels; chimneys for residential park homes but not to chimneys for leisure accommodation vehicles.This part of BS 5440 is not applicable to gas-fired incinerators. Refer to BS 5871-3 for the installation