1、BRITISH STANDARD BS 1566-2: 1984 Incorporating Amendment Nos.1 and 2 Copper indirect cylinders for domestic purposes Part 2: Specification for single feed indirect cylinders UDC 683.974 + 696.463-034.3BS1566-2:1984 This British Standard, having been prepared under the directionof the Building Servic
2、es Standards Committee, was published under the authority of the Board of BSI and comes into effect on 31 July1984 BSI 08-1999 First published July 1949 First revised and published as Part 1 April 1966 Part 2 first published March 1970 First revision May 1972 Second revision July 1984 The following
3、BSI references relate to the work on this standard: Committee reference SEB/9 Draft for comment 83/11773 DC ISBN 0 580 13913 1 Committees responsible for this British Standard The preparation of this British Standard was entrusted by the Building Services Standards Committee (SEB/-) to Technical Com
4、mittee SEB/9 upon which the following bodies were represented: Association of Manufacturers of Domestic Electrical Appliances British Copper Cylinder Association British Gas Corporation British Non-ferrous Metals Federation Chartered Institute of Building Copper Cylinder and Boiler Manufacturers Cop
5、per Development Association Copper Tube Fittings Manufacturers Association Department of the Environment (Building Research Establishment) Department of the Environment (Property Services Agency) Electricity Supply Industry in England and Wales Galvanizers Association Heating and Ventilating Contrac
6、tors Association Institute of Plumbing London Boroughs Association Manufacturers Association of Radiators and Convectors Ltd. Royal Institute of British Architects Royal Institute of Public Health and Hygiene Solid Fuel Advisory Service STC Water Regulations and Fittings Scheme Thames Water Authorit
7、y Metropolitan Water Division Water Companies Association Zinc Development Association Coopted member Amendments issued since publication Amd. No. Date of issue Comments 5791 September 1988 6601 September 1990 Indicated by a sideline in the marginBS1566-2:1984 BSI 08-1999 i Contents Page Committees
8、responsible Inside front cover Foreword ii 1 Scope 1 2 Definitions 1 3 Sizes and grades 1 4 Primary heater 1 5 Designation of single feed copper indirect cylinders for ordering purposes 3 6 Tolerances 3 7 Materials 3 8 Manufacture 3 9 Design of cylinder top and bottom 4 10 Screwed connections for pi
9、pes 4 11 Optional features 4 12 Tests 5 13 Marking 6 Appendix A Information to be supplied by the purchaser with any enquiry or order 7 Appendix B Performance tests to determine the standing heat losses fromfactoryinsulated cylinders 7 Appendix C Test for isolation of primary and secondary water 8 F
10、igure 1 Cylinder top and bottom details 9 Figure 2 Single feed indirect cylinder showing position of connectionsforpipesand immersion heater 10 Figure 3 Single feed indirect cylinder showing positions of connectionsforpipes, draining tap and alternative position for immersionheater 10 Figure 4 Examp
11、le of protector rod construction and fixing 11 Figure 5 Apparatus for heat loss test 12 Figure 6 Isolation testing apparatus 13 Table 1 Dimensions and details of single feed copper indirect cylinders 2 Table 2 Ball diameter 4 Table 3 Maximum height of cylinder top 4 Table 4 Minimum surface area of p
12、rotector rods 5 Publications referred to Inside back coverBS1566-2:1984 ii BSI 08-1999 Foreword This revision of this British Standard, which has been prepared under the direction of the Building Services Standards Committee, supersedes BS1566-2:1972, which is withdrawn. It has been prepared in conj
13、unction with BS699 “Specification for copper direct cylinders for domestic purposes” and is complementary to BS1566-1 “Specification for double feed indirect cylinders”. Whereas double feed indirect cylinders require separate feed cisterns for both primary and secondary circuits, the single feed ind
14、irect cylinders specified in this Part of this standard require only one feed cistern, the feed water to the primary circuit being obtained from within the cylinder through the primary heater. The increase in volume of the primary water owing to expansion is accommodated within the primary heater an
15、d the primary water is prevented from coming into contact with the secondary water. A new size9E has been added to provide an additional size of cylinder suitable for off-peak electric water heating systems. The dimensions and positioning of connections are unaltered. The original cylinder grades2 a
16、nd3 are included. A new grade4 covers cylinders specifically designed for installations which are subject to a lower maximum working head than the maximum permitted in the previous grade3, thus enabling a reduction to be made in the thickness of copper sheet used. Primary heaters of the coil or annu
17、lar type are used in single feed indirect cylinders. Whereas double feed indirect cylinders in accordance with BS1566-1 with coil primary heaters are preferred for higher primary water operating pressures and higher primary water circulation rates, this is not the case with single feed indirect cyli
18、nders, which should not be used in sealed systems and which have limited application on direct pump circulation. This Part of this standard does not include every detail of the primary heater design, and the manufacturer will continue to decide on the construction of his own particular unit to ensur
19、e that it complies with all relevant requirements and particularly with12.3. Metal thicknesses are now specified both before and after forming. Attention is drawn to the preferred sizes of cylinders in Table 1. This standard now specifies material and heat loss performance requirements for thermal i
20、nsulation where this is applied to cylinders by the manufacturer at the factory. In the interest of energy saving, it is recommended that all cylinders are either insulated at the factory or are provided with an insulating jacket complying with BS5615. A specification for aluminium protector rods is
21、 now included. It is recommended that these be fitted to copper cylinders during manufacture to help to ensure long service in those supply waters that have been known to cause or are expected to cause premature failure by pin hole corrosion. When required it is important that they be specified at t
22、he time of ordering. It is rarely possible and never satisfactory to install aluminium protector rods after the cylinder has been put into service. Leaflet MP.538 published by BNF Metals Technology Centre, Grove Laboratories, Denchworth Road, Wantage, Oxon, OX129BJ gives further information. Copper
23、cylinders require careful handling during transit and installation to avoid damage. Factory insulation is recommended to help prevent such damage (see11.5). Parts1 and2 of this standard and BS417, BS699, BS1565, BS2777, BS3198 and BS4213 cover water storage vessels mainly for domestic use and now fo
24、rm a series to which others may be added when such a course is considered necessary.BS1566-2:1984 BSI 08-1999 iii Certification. It is strongly recommended that in view of the nature of this specification, manufacturers and purchasers should make use of the certification facilities described on the
25、inside back cover of this standard. A British Standard does not purport to include all the necessary provisions of a contract. Users of British Standards are responsible for their correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. Summa
26、ry of pages This document comprises a front cover, an inside front cover, pages i to iv, pages1to 14, an inside back cover and a back cover. This standard has been updated (see copyright date) and may have had amendments incorporated. This will be indicated in the amendment table on the inside front
27、 cover.iv blankBS1566-2:1984 BSI 08-1999 1 1 Scope This Part of this British Standard specifies requirements for copper cylinders, with or without the optional features listed in clause11, for the storage of hot water, where the water is heated indirectly by the water circulating in an integral prim
28、ary heater of annular or coil type and for which only one feed cistern is required, the feed water to the primary circuit being obtained from within the cylinder through the primary heater. Three grades and seven sizes are specified. The minimum storage capacities are from86 L to196 L. The cylinders
29、 are intended for fixing in the vertical position and are all of the type in which the bottom is domed inwards. The information to be supplied with any enquiry or order is set out in Appendix A. NOTEThe titles of the publications referred to in this standard are listed on the inside back cover. 2 De
30、finitions For the purposes of this Part of this British Standard, the following definitions apply. 2.1 cylinder a closed cylindrical vessel with domed ends 2.2 primary heater an annular type heat exchanger constructed from sheet or a coil type heat exchanger constructed from tube and mounted inside
31、a cylinder for the transfer of heat to the stored water from circulating hot water 2.3 primary water the water in the primary circuit, including the water in the primary heater, boiler, radiators, pipework, etc. 2.4 primary capacity the total volume of primary water, the expansion of which is to be
32、accommodated by the primary heater 2.5 secondary water the water in the cylinder and associated pipework that is heated by the primary heater 2.6 screwed connection any threaded connection to which pipes or apparatus can be fitted 2.7 length of thread portion (of screwed connection) the distance mea
33、sured from the front face of the connection (including any chamfer or radius) to either the leading face of a plug or screw ring gauge which has been screwed as far as possible by hand into or onto the connection or in the case of a fully threaded female connection, to the back face 2.8 metal thickn
34、ess before forming the nominal thickness of copper sheet (which is subject to the tolerances specified in BS2870) from which units are manufactured 2.9 storage capacity the total volume of water that can be stored in the cylinder, excluding the water content of the primary heater 3 Sizes and grades
35、The size of cylinder, the grade and the thickness of material appropriate to each grade shall comply with Table 1. NOTEFor thicknesses of materials after forming see clause8. The diameter of a cylinder shall be measured externally, and the height externally from base to top of dome, excluding any se
36、am, screwed connection or other projection. 4 Primary heater 4.1 Classes. The primary heater shall be either: a) class 110 for systems having a primary capacity of not more than110L; or b) class 180 for systems having a primary capacity of not more than180L. 4.2 Dimensions. Primary heaters shall be
37、of the annular or coil type. The minimum surface area and thickness of materials shall be as specified in Table 1. The tube diameter for coil type heaters shall be as specified in Table 1. 4.3 Feed to primary circuit. The effective cross-sectional area of the waterway from the cylinder to the primar
38、y circuit shall be not less than500mm 2 . 4.4 Vent from primary heater. The effective cross-sectional area of the entry to the internal vent pipe shall be not less than245mm 2 . Connections between the heat-exchanger and the vent shall at no point be less than140mm 2 .BS 1566-2:1984 2 BSI 08-1999 Ta
39、ble 1 Dimensions and details of single feed copper indirect cylinders 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 British Standard type reference a External diameter External height (over dome) Minimum storage capacity (see 2.9) Minimum annular surface area Minimum coil surface area Minimum n
40、ominal thickness of copper sheet before forming Coil primary heater: size of tube Height of screwed connections (see Figure 2 and Figure 3) Size of screwed connections: internal threads d Size of primary heater connections: external threads Grade 2 Grade 3 Grade 4 All grades Test pressure: 2.20 bar
41、b Test pressure: 1.45 bar Test pressure: 1.0 bar A B Annular primary heater Maximum working head:15m c Maximum working head 10m c Maximum working head:6m c J 1 L Body Top Bottom Body Top Bottom Body Top Bottom (see clause10) mm mm L m 2 m 2 mm mm mm mm mm mm mm mm mm mm mm mm mm 3 e 5 7 e 400 450 45
42、0 1050 750 900 104 86 108 0.63 0.52 0.66 0.42 0.35 0.44 0.9 1.0 1.0 0.9 1.0 1.0 1.6 1.6 1.6 0.7 0.7 0.7 0.7 0.7 0.7 1.2 1.2 1.2 0.55 0.55 0.55 0.6 0.6 0.6 0.9 0.9 0.9 0.55 0.55 0.55 28 28 28 140 140 140 100 100 100 G1 G1 G1 G1B G1B G1B 8 e 9 e 9E 450 450 450 1050 1200 1500 130 152 196 0.78 0.91 1.18
43、 0.52 0.61 0.79 1.0 1.0 1.0 1.0 1.0 1.0 1.6 1.6 1.6 0.7 0.7 0.7 0.7 0.7 0.7 1.2 1.2 1.2 0.55 0.7 0.7 0.6 0.6 0.6 0.9 0.9 0.9 0.55 0.55 0.55 28 28 28 140 140 140 100 100 100 G1! G1! G1! G1B G1B G1B 10 500 1200 180 1.13 0.75 1.2 1.2 1.8 0.9 0.9 1.6 0.8 0.9 1.4 0.55 35 180 150 G1“ G1!B NOTEType 9 E is
44、the preferred size for off-peak electric water heating. a Cylinders should be ordered by the BS type reference. b 1 bar = 10 5N/m 2= 100kPa. c The working head is the vertical distance from the bottom of the cylinder to the water line of the cistern supplying it (1 m water = 0.1 bar approximately).
45、d Class B external threads may be supplied when so ordered and shall be to the requirements of clause10. e Preferred sizes for new installations in dwellings.BS1566-2:1984 BSI 08-1999 3 5 Designation of single feed copper indirect cylinders for ordering purposes For ordering purposes, single feed co
46、pper indirect cylinders shall be designated “BS1566: SF” followed by “A” to indicate annular type or “C” to indicate coil type, the appropriate BS type reference, the grade from Table 1 and the heater class (see clause4), e.g.“BS1566: SF, C, Ref.3, grade2, class110”. 6 Tolerances The maximum toleran
47、ces on the dimensions given in Table 1 shall be as follows: a) position of screwed connections:6mm in any direction; b) diameter and height of cylinder:6mm; c) thickness of material: the tolerances specified in BS2870 apply. 7 Materials The cylinders and annular type primary heaters shall be made fr
48、om copper sheet complying with section eight of BS2870:1980. NOTEWhere joints are to be welded in copper thicker than1.2mm, material designated C106 is preferred. Screwed connections shall be made of copper, gunmetal or alpha brass (inhibited against dezincification), and shall be attached to the cy
49、linder by either brazing, welding or mechanical means. Filler alloys for brazing shall be types CP1 or CP2 of BS1845, or other corrosion resistant alloy that does not undergo dezincification and does not produce brittle joints. Filler rods for welding shall be types C7, C8, C9 or C21 of BS2901-3. Coil type primary heaters shall be made from copper tube complying with the material and dimensional requirements of BS2871-1. Before forming, the copper tube shall have been in a suitable temper for forming. Aluminium protector rods shall be made from allo
