Electronic Copy - RIBA Product Selector
Contents
1. Notes e Flow rates shown apply to situations where the supply is capable of supplying an adequate dynamic pressure The graph represents the results of tests carried out by the BBA e Where static water supplies are less than 1 bar consult Kwikot Limited or the BBA e Flow rates shown for mixed hot cold water assume that the cold supply is not taken from the balanced connection of the pressure reducing valve Connections 5 12 The system is designed to be connected to copper tube to BS EN 1057 1996 using conventional plumbing fittings see Table 1 for details of connection sizes and threads The connections are of adequate size 6 Safety Excessive temperature Prevention of explosion Safe discharge of hot water 4 that the temperature of the stored water will not exceed 100 C and safeguard the operation of the system are 6 1 The satety devices provided to ensure e the combined temperature and pressure relief valve and e the non seltresetting thermal cutout fitted to the system and wired to the immersion heater 6 2 The system has a satety warning label attached to the storage cylinder bearing an explanation of the action to be taken in the case of Electronic Cop any malfunction of the system It is essential that the instructions are followed 6 3 The system has adequate provision for sate disposal of discharges from the expansion valve and the combined temperature and pres2. A Insulation PU foam covered by white epoxy coated steel outer casing 5 Corrosion protection magnesium alloy anode 6 Cold water feed 34 BSP male 7 Hot water draw off 34 BSP female 8 Drain valve to BS 2879 1980 Q Immersion heater 10 Cold water control valves see Detail Sheet 2 line strainer check valve expansion valve pressure reducing valve Table 1 Storage capacities and dimensions Manufacturer s system reference 150 210 Storage capacity litres 150 210 Cylinder size mm height 1036 1382 diameter 450 450 overall height 1090 1436 overall diameter 525 525 Weight of cylinder kg empty 50 67 full 200 277 Expansion vessel capacity litres 16 16 Connection sizes mains water supply to control valves mm compression fitting 22 22 balanced cold water draw off mm compression fitting 22 22 cold water inlet to storage cylinder BSP inches male 3 4 3 4 hot water draw off BSP inches male 34 34 expansion valve discharge BSP inches male Yo Yo temperature and pressure relief valve discharge BSP inches female Yo Yo Immersion heater rating at 240 V kVV 3 3 heater length mm 280 280 Anode length mm 370 480 Table 2 Labels General The BBA identification mark incorporating the number of this Certificate 2 The system uses BEAB British Electrical Approvals Board approved electrical controls UKWEBS United Kingdom Water Fittings Byelaws Schem
3. Direct heating A B g D System Heat source Heatup Percentage of the capacity Mean Re heating ret time and amount drawn off within draw oft time 10 C of set temperature temperature kVV minutes litres ES minutes T29 G 160 89 111 60 105 150 3 187 90 35 60 92 210 3 250 93 195 60 IZZ system will perform in a safe and satisfactor Table 4 Standing energy losses 4 P j manner System ref Heat loss Energy loss 4 2 The hot water system capacity should be maximum daily enact A ath dat WI kWh selected in accordance with the recommenaations oe ae or of BS 6700 1997 to meet the demands made 150 100 gt AO upon the installation The primary circuit pipework 500 113 27 associated with indirect heating systems should be 1 These figures relate to a 45 C differential between the stored water and ambient temperature 4 General 4 1 The Kwikot Indirect Unvented Hot Water Storage System see Figure 2 has been assessed in accordance with MOAT No 38 1986 When used in accordance with this Detail Sheet the designed in accordance with BS 6700 1997 and BS 5449 1977 Particular consideration should be given to the inclusion of a primary circuit by pass to prevent excessive pressure on the motorised valve and also sateguard against nuisance tripping of the non seltresetting thermal CUFOuT 4 3 The pressure and flow available from the water mains should be obtained trom the local water undertaker or by testing existing
4. Static supply pressures of incoming water supply Notes Flow rates shown apply to situations where the supply is capable of supplying an adequate dynamic pressure The graph represents the results of tests carried out by the BBA Where static water supplies are less than 1 bar consult Kwikot Limited or the BBA Flow rates shown for mixed hot cold water assume that the cold supply is not taken from the balanced connection of the pressure reducing valve flow out Imin of the system Insulation 5 10 The system is provided with adequate insulation to satisfactorily limit the energy loss from the stored water and meets the requirements described in the national Building Regulations England and Wales Approved Document L1 Scotland Regulation 22 Standard J3 4 Northern Ireland Technical Booklet F Paragraph 3 3 5 11 The heat loss of each system while maintaining the temperature of the stored water at 65 C is shown in Table 4 Electronic Copy Connections 5 12 The system is designed to be connected to copper tube to BS EN 1057 1996 using conventional plumbing fittings see Table 1 for details of connection sizes and threads The connections are of adequate size 6 Safety Excessive temperature Prevention of explosion Safe discharge of hot water 4 6 1 The safety devices provided to ensure 5m that the temperature of the stored water will n
5. 2 73 2003 Electronic Co e direct immersion heater thermostat non self resetting thermal cutout to BS 3955 1986 e motorised valve to BS 3955 1986 e expansion vessel to BS 6144 1990 19 4 An examination was made of existing data relating to e adequacy ot installation instructions e practicability of installation by the competent person e electrical safety e effect on water quality and prevention of waste of water e properties in relation to fire e practicability and adequacy of maintenance requirements e durability of materials used 20 Investigations The manutacturing and assembly process was examined including the methods adopted for quality control and details were obtained of the quality and composition of materials used BS 864 2 1983 Capillary and compression tube fittings of copper and copper alloy Specitication for capillary and compression fittings for copper tubes BS 2879 1980 Specification for draining taps screw down pattern BS 3955 1986 Specification for electrical controls for household and similar general purposes BS 5449 1977 Code of practice for central heating for domestic premises Forced circulation hot water systems BS 6144 PY Specification for expansion vessels using an internal diaphragm for unvented hot water supply systems BS 6282 1 1982 Devices with moving parts for the prevention of contamination of water by backflow Specification for check valve
6. regarding Maintenance and section 15 for the definition of a competent person This Detail Sheet must be read in conjunction with the Front Sheets and Detail Sheet 1 which give the Conditions of Certification and the product s position regarding the Building Regulations respectively 1 Description 1 1 The Kwikot Direct Unvented Hot Water Storage System is for use in domestic commercial and public buildings for connection to domestic hot and cold water services to BS 6700 1997 and comprises the components shown in Figure 1 The storage capacities and main dimensions are listed in Table 1 1 2 The system generally comprises a steel storage cylinder enamelled on the interior surfaces and factory fitted with two 3 kW immersion heaters The models are for free standing installations 1 3 The cylinder is insulated with polyurethane PU hard foam and covered with a white epoxy coated steel sheet 1 4 For safety of the system electrical control devices and the combined temperature and pressure relief valve are factory fitted Other components are supplied separately for fitting on site by a competent person see Figure 1 and section 2 1 1 5 Factory production control is exercised during the manufacture and assembly of each of the components including visual examination dimensional checks and performance tests Each storage cylinder is pressure tested and examined tor leaks during manutacture and prior to dispatch
7. supplies to Electronic Copy establish the likely performance of the system at peak periods 4 4 Itis essential for reasons of safety and performance that installation of the system is undertaken only by a competent person working in accordance with this Detail Sheet 4 5 The data shown in Tables 3 and 4 represent the analysis of tests carried out by the BBA 5 Hot water storage and supply Hot water storage 5 1 The capacities of the system range are comparable with conventional systems see Table 1 When heated to 60 C the system can supply 70 of the storage capacity at the mean temperature given in Table 3 Flow rates 5 2 The flow rates achieved at the hot water draw olf point will depend on all the normal factors including the layout of the pipework trom the tap to the cylinder the cold water supply pressure and the flow rate available at the supply to the system 5 3 For design purposes the graphs in Figure 3 show the relationship between e flow available e mains supply pressure and e the maximum hot water flow rate out of the system 1 Flow characteristics shown in the graphs reflect the worst combination of cold water control components that may be installed see Detail Sheet 2 5 4 The hot cold mixed flows are for draw oft temperatures of 40 C assume 60 at 60 C and 40 at 10 C Heat up re heating and hot water draw off temperature 5 5 The heatup and reheat times are comparable
8. this Certificate will meet or contribute to meeting the relevant requirements Requirement G3 Hot water storage See the tinted areas of the Safety section and the relevant tinted area of the Installation section of the accompanying system Detail Sheets Dwellings Comment Requirement LI Comment See the tinted areas of the Hot water storage and supply section of the accompanying system Detail Sheets Systems with a capacity of more than 150 litres that are not heated by off peak electricity should be fitted with a time switch Requirement Regulation 7 Materials and workmanship Comment The systems are acceptable Readers are advised to check the validity of this Certificate by either referring to the BBA s website www bbacerts co uk or contacting the BBA direct Telephone Hotline 01923 665400 continued e It is essential for reasons of safety and performance that the systems are installed and maintained in accordance with this Certificate These Front sheets must be read in conjunction with the accompanying Detail Sheets which provide information on components and the different systems Electronic Copy 2 The Building Standards Scotland Regulations 1990 as amended sf In the opinion of the BBA Kwikot Unvented Hot Water Storage Systems if used in accordance with the provisions of this Certificate will satisfy or contribute to satisfying the various Regulations and related Technical Standards list
9. with conventional systems of a similar size supplying hot water 5 6 The immersion heater will heat the stored water from 15 C to 60 C in the time listed in column A of Table 3 5 7 The amount of water that can be drawn off within 10 C ot the set temperature is listed in column B of Table 3 the mean temperature of 70 of the water drawn off immediately atter reaching 60 C in column C and the time taken to reheat the stored water to 60 C in column D Temperature control 5 8 The thermostats wired to the 4 immersion heater and motorised valve are satistactory for controlling the temperature of the stored water Pressure control 5 9 The pressure control valve is satisfactory for controlling the pressure of the water supplied trom the water mains or other suitable potable supply Figure 3 Flow rates 20 hot only 7O 2 bar COT 143 bar D s 507 8 4 bar S AO ers bar ea Static supply pressures of incoming water SOT supply 5 O z 34 valves O 10 20 30 40 50 60 79 80 flow available Imin at entry to system hot cold mixed 70 mixed water at 40 C mixed from 60 hot water at 60 C and 60 40 cold water at 10 C Jo 50 r P 30 Wz nf A ae V 34 valves 10 A O 10 20 380 40 50 60 70 80 flow available Imin at entry to the system 8 bar 4 bar 3 bar 2 bar
10. 2 Delivery and site handling 2 1 The system is delivered in a cardboard carton protected internally with polystyrene supports and wrapped in a plastic bag The following items see also Detail Sheet 2 are supplied separately with each storage cylinder for fitting on site by a competent person all other components are factory titted cold water control valves to include a pressure control valve pressure limiting or pressure reducing valve e check valve e expansion valve e line strainer e tundish 2 2 When the system is required to be stored it must be stored in a dry environment and protected trom damage 2 3 The system must be caretully handled and kept in the delivery crate until required for siting in position The weight of each system empty and full is stated in Table 1 and on the label attached to each system Readers are advised to check the validity of this Detail Sheet by either referring to the BBA s website www bbacerts co uk or contacting the BBA direct Telephone Hotline 01923 665400 Electronic Copy 3 Labelling marking The system carries a label s bearing the intormation set out in Table 2 and is supplied with a comprehensive installation user manual Figure General layout Key to Figure 1 1 Storage cylinder manufactured from 2 mm thick steel 2 Combined temperature and pressure reliet valve see Detail Sheet 2 Factory fitted 3 Expansion vessel
11. BRITISH BOARD OF AGREMENT TECHNICAL APPROVALS FOR CONSTRUCTION Designated by Government fo issue European Technical pprovals Electronic Copy CI SfB Kwikot Limited 53 3 X Aberdeen Road PO Box 389 Benoni 500 Agr ment Republic of South Africa Certificate Tel 0027 119142300 Fax 0027 11914 1286 No 96 3253 email hotwater kwikotinl co za Trd Kue website www kwikot co za KWIKOT UNVENTED HOT WATER STORAGE SYSTEMS Syst me d eau chaude sanitaire Hei wasserbereiter a penrai e THIS CERTIFICATE RELATES TO KWIKOT UNVENTED HOT WATER STORAGE SYSTEMS e The systems are for use in domestic commercial and public buildings with domestic hot and cold water services to BS 6 00 1997 e The systems are for connection fo mains water supply at pressures up to 12 bar e Kwikot is distributed in the UK by A amp J Gummers Unit H Redfern Park Way Tyseley Birmingham B11 2DN and Stockgap ltd 209 Watling Street Dartford Kent DAI 6EG continued Regulations Detail Sheet 1 1 The Building Regulations 2000 as amended England and Wales 2 The Secretary of State has agreed with the British Board of Agr ment the aspects of performance to be used by the BBA in assessing the compliance of unvented hot water storage systems with the Building Regulations In the opinion of the BBA Kwikot Unvented Hot Water Storage Systems if used in accordance with the provisions of
12. For technical or additional information contact the Certificate holder see front page For information about the Agr ment VAN Certificate including validity an BBA mse scope tel Hotline 01923 665400 AGREMENT or check the BBA website Electronic Copy cee A _ lt BRITISH BOARD OF AGREMENT TECHNICAL APPROVALS FOR CONSTRUCTION Kwikot Limited KWIKOT INDIRECT UNVENTED HOT WATER STORAGE SYSTEM 53 3 x Certificate No 96 3253 DETAIL SHEET 4 Second issue e THIS DETAIL SHEET RELATES TO THE KWIKOT INDIRECT UNVENTED HOT WATER STORAGE SYSTEM WITH A RANGE OF CAPACITIES FROM 125 TO 210 LITRES A NOMINAL OPERATING PRESSURE OF 3 BAR AND FITTED WITH ONE 3 kW IMMERSION HEATER FOR DIRECT SECONDARY BACK UP HEATING e The system is for use with mains or other suitable potable water supply pressures up to and including 12 bar e The system is for use with gas electric or oil fired boilers e The system can be used with a vented or pressurised primary with a maximum primary pressure of 3 bar e Satistactory outlet How rates can only be achieved where the flow rate available at the entry to the system is adequate see section 5 of this Detail Sheet e It is essential for reasons of safety and performance that the product is installed and maintained in accordance with the requirements of this Detail Sheet by a competent person see section 12 regarding Mainten
13. Scotland and the Water Regulations Northern Ireland England and Wales The product satisfies the requirements of the water regulations if used and installed in accordance with this Certificate Scotland The product satisfies the requirements of the water byelaws if used and installed in accordance with this Certificate Northern Ireland The product satisfies the requirements of the water regulations if used and installed in accordance with this Certificate 7 The Electrical Equipment Safety Regulations 1994 and the Electromagnetic Compatibility Regulations 1994 These Regulations implement the Low Voltage Directive 73 23 EEC as amended by the CE Marking Directive 93 68 EEC and the Electromagnetic Compatibility Directive 89 336 EEC and require manufacturers to carry out assessment of their products against the criteria given in the Directives Declarations of Conformity have been provided by Kwikot Limited The BBA has not assessed the product for compliance with these Directives Electronic Copy BS 6700 1997 Specification for design installation testing and maintenance of services supplying water for domestic use within buildings and their curtilages 8 Conditions 8 1 This Certificate la relates only to the product that is described installed used and maintained as set out in this Certificate b is granted only to the company firm or person identitied on the tront cover no other company firm or person m
14. Systems Hot Water Discharges trom Satety Devices BBA Requirements and Guidance 3 The discharge pipe from the expansion valve should be laid with a continuous fall to terminate in a suitable location The details applying to discharge pipes given in BBA Information No 33 1989 are generally recommended 4 The system is installed in locations similar to those tor storage cylinders used in a conventional vented system or in other locations advantageous to the building designer see Table 1 for load weight of the system when Tull It is important to ensure there is adequate clearance for the removal of the immersion heater and the corrosion protection anode see Table 1 5 Electrical wiring must be carried out in accordance with the IEE Wiring Regulations The immersion heater circuit must be protected by a suitably rated fuse and an isolating switch with double pole disconnection 17 Procedure Summary of installation procedure 17 1 The storage cylinder is located in position see the Kwikot Technical Information and Installers Instructions and the plumbing connections made to the inlet and outlet pipes in the same manner as for a conventional storage cylinder except that the water supply pipe is taken directly trom the mains or other suitable potable supply via the line strainer and cold water control valves ensuring the arrow markings on the components are pointing downstream to the cold water inlet of the sto
15. The systems will satisty the requirements of this Standard See section 16 of each system Detail Sheet Miscellaneous hazards Danger from malfunction of an unvented hot water storage system Unvented hot water storage system The systems are constructed to prevent the temperature of the stored water at any time exceeding 100 C and to provide adequate protection trom malfunctions of the system See the tinted areas of the Safety section of the accompanying system Detail Sheets 3 The Building Regulations Northern Ireland 2000 4 In the opinion of the BBA the position of Kwikot Unvented Hot Water Storage Systems if used in accordance with the provisions of this Certificate will satisfy or contribute to satisfying the various Building Regulations as listed below Regulation Comment Regulation Comment Regulation Comment Regulation Comment Regulation Comment B2 F3 F4 P5 P6 Fitness of materials and workmanship The systems are acceptable Space heating hot water supply and artificial lighting systems The systems are fitted with a thermostat meeting the requirements of this Regulation To comply with the deemectHo satisty provision set out in Technical Booklet F 1991 Conservation of tuel and power Section 2 systems having a capacity of more than 150 litres and where the water is heated by means other than off peak electricity must be used in conjunction with a time switch to shut
16. a competent person as defined in section 15 2 Electronic Copy Figure 2 Schematic layout Indirect combined temperature and pressure relief valve cold water control valves expansion valve I I I I I I I I I eae pressure I isolating control valve ine I I I I I I I I valve strainer cold feed gt check valve discharge pipe to sate position balanced pressure cold draw oft and 4 see section 16 3 anode indirect cylinder non selF resetting thermal cutout expansion hot draw off vessel motorised valve primary flow ee ee ee oe indirect cylinder thermostat steel coil heat exchanger RES Se I primary return immersion heater direct thermostat and non self resetting thermal cut out drain valve Table 3 Heating reheating and water draw olf temperature Indirect heating A B 3 D System Primary flow Heatup Percentage of the capacity Mean Re heating ref time and amount drawn off within draw olt time 10 C of set temperature temperature litres per minute minutes litres C minutes 25 Lo 27 89 11 60 2 WoO 15 34 9 136 60 26 210 15 AS 93 186 60 30 1 These heatup times apply to a pumped system only and assume a boiler of adequate output is connected to the system Primary flows of 15 litres per minute normally can be attained with a standard domestic circulating pump
17. ance and section 15 for the definition of a competent person This Detail Sheet must be read in conjunction with the Front Sheets and Detail Sheet 1 which give the Conditions of Certification and the product s position regarding the Building Regulations respectively 1 Description 1 1 The Kwikot Indirect Unvented Hot Water Storage System is for use in domestic commercial and public buildings for connection to domestic hot and cold water services to BS 6700 1997 and comprises the components shown in Figure 1 The storage capacities and main dimensions are listed in Table 1 1 2 The system generally comprises a steel storage cylinder enamelled on the interior surfaces and factory titted with an externally enamelled steel coil heat exchanger and a 3 kW immersion heater for use as direct secondary back up The system is for free standing installation and connects to a cold teed supply as indicated in Table 1 1 3 The cylinder is insulated with polyurethane PU hard foam and covered with a white epoxy coated steel sheet 1 4 For safety of the system electrical control devices and the combined temperature and pressure relief valve are factory fitted Other components including additional safety devices are supplied separately for fitting on site by a competent person see Figure 1 and section 2 1 1 5 Factory production control is exercised during the manufacture and assembly of each of the components including visual exami
18. ates referred to state that installation must be undertaken by a competent person as defined in section 15 2 k 15 3 In Scotland it is the requirement of 4 15 4 In Northern Ireland it is the a requirement of Regulation P5 Unvented Hot Water Storage Systems that systems with a capacity not greater than 500 litres and a heat input not greater than 45 kW be certitied as meeting the relevant requirements of Regulation P5 by a member body of FOTA operating a Technical Approvals Scheme eg by the BBA under MOAT No 38 1986 Agr ment Certificates will refer to a need for installation by a competent person as defined in section 15 2 Electron ectronic Copy The following conditions abstracted from the Certificate holder s instructions must be observed 1 The system must be connected to a water supply with a pressure not exceeding 12 bar and ot a quality supplied by a water undertaker under the Water Byelaws and Water Regulations as appropriate 2 The combined temperature and pressure relief valve tundish must be in a clearly visible position within 500 mm of the cylinder and in the same compartment as the cylinder The discharge pipe to and trom the tundish must be of metal and laid to fall It must terminate at a visible sate place such as a gully where there is no risk of contact with the hot water by persons in or about the building Further details are given in BBA Information No 33 1989 Unvented Hot Water Storage
19. ay hold or claim any entitlement to this Certiticate lc is valid only within the UK d has to be read considered and used as a whole document it may be misleading and will be incomplete to be selective le is copyright of the BBA If is subject to English law 8 2 References in this Certiticate to any Act of Parliament Regulation made thereunder Directive or Regulation of the European Union Statutory Instrument Code of Practice British Standard manufacturers instructions or similar publication are reterences to such publication in the form in which it was current at the date of this Certificate 8 3 This Certificate will remain valid for an unlimited period provided that the product and the manufacture and or fabrication including all related and relevant processes thereof a are maintained at or above the levels which have been assessed and found to be satistactory by the BBA lb continue to be checked as and when deemed appropriate by the BBA under arrangements that it will determine and c are reviewed by the BBA as and when it considers appropriate 8 4 In granting this Certiticate the BBA is not responsible for a the presence or absence of any patent intellectual property or similar rights subsisting in the product or any other product b the right of the Certificate holder to market supply install or maintain the product and c the actual works in which the product is insta
20. ble 3 Flow rates 5 2 The flow rates achieved at the hot water draw off point will depend on all the normal factors including the layout of the pipework from the tap to Electronic Copy the cylinder the cold water supply pressure and the tlow rate available at the supply to the system 5 3 For design purposes the graphs in Figure 3 show the relationship between e flow available e mains supply pressure and e the maximum hot water flow rate out of the system 1 Flow characteristics shown in the graphs reflect the worst combination of cold water control components that may be installed see Detail Sheet 2 5 4 The hot cold mixed flows are for draw oft temperatures of 40 C assume 60 at 60 C and 40 at 10 C Heat up re heating and hot water draw off temperature 5 5 The heatup and re heat times are comparable with conventional systems of a similar size supplying hot water 5 6 The immersion heater will heat the stored water from 15 C to 60 C in the time listed in column A of Table 3 5 7 The amount of water that can be drawn off within 10 C ot the set temperature is listed in column B of Table 3 the mean temperature ot 70 of the water drawn off immediately after reaching 60 C in column C and the time taken to re heat the stored water to 60 C in column D Temperature control 5 8 The thermostat wired to the immersion 53 heater is satisfactory for controlling the temperature of the stored wat
21. by a competent person using the Kwikot Technical Information and Installers Instructions or by the Certificate holder under their responsibility as the product manutacturer including that required by their warranty using components supplied by the Certiticate holder 12 3 The system may be drained using the drain valve 12 4 When the system is used in buildings subject to the Health and Satety at Work etc Act 1974 an inspection of the system must be carried out every six months 13 Site checks On site the following should be checked By the Client 1 The installer is a competent person by reterence to his her identity card 2 The system being installed is BBA Certificated by reference to the label 3 That the installation complies with the BBA Certificate by reference to the installer s signature on the label attached to the cylinder By the Building Control Officer or Approved Inspector 1 1 2 and 3 as above 2 The combined temperature and pressure reliet valve thermostat non seltresetting thermal cutout and the immersion heater are as described in the Certificate 3 The tundish and discharge pipework are correctly located and fitted 14 Durability The system is manutactured trom durable materials and conventional plumbing components and will have a lite equal to that expected of a vented system It may be necessary to replace some of the system components eg the immersion hea
22. e list number Manufacturer s name Product code number Ona KR Ww Serial number N The system is an unvented system Design 1 Maximum water supply pressure bar Operating pressure bar Expansion valve setting bar Immersion heater s Power voltage Type BS Length Storage capacity litres Weight of unit full kg Expansion vessel charge pressure bar Oo anaBR WN N Safety warnings conditions 1 Installation to be carried out only by a competent person 2 The removal replacement of any component to be carried out only by a competent person using components supplied by the Certificate holder in accordance with their instructions 3 Any malfunction of the system such as that resulting in discharge of water trom the expansion valve or the combined temperature and pressure relief valve to be reported to a competent person ater switching off the heat source and prior fo any further use of the system A The installation of the system is subject to approval under the Building Regulations Water Byelaws and Regulations the Health and Satety at Work etc Act 1974 where appropriate and the Health and Safety at Work Northern Ireland Order 1978 where appropriate Installer details Space for la Name b Address c Telephone number d Completion date e Registration No 2 A declaration that installation has been in accordance with BBA Certificate No 96 3253 with space for signature of
23. ed below Regulation Standard Comment Standard Comment Regulation Standards Comment Standards Comment Regulation Standard Comment Regulation Standard Comment 10 82 Bee 22 2 te 4 E eine 17 27 220 28 on Fitness of materials and workmanship Selection and use of materials fittings and components and workmanship The product can contribute to a construction meeting this Standard See the Installation part of the relevant Detail Sheet Selection and use of materials fittings and components and workmanship The product is an acceptable material Conservation of fuel and power Buildings in purpose groups 2 to 7 Building services space heating and hot water Space heating controls The systems are fitted with a thermostat which meets the requirements of Standard J5 2a Systems having a capacity of more than 150 litres and where the water is not heated by off peak electricity require a time switch that can start up and shut off the supply of heat See the tinted areas of the Hot water storage and supply section of the accompanying system Detail Sheets Buildings in purpose groups 2 to 7 Building services space heating and hot water Insulation of pipes ducts and vessels The storage vessels have a heat loss of not more than 90 Wm and thus satisfy these Standards Miscellaneous hazards Danger from accident Discharge of steam or hot water
24. er Pressure control 5 9 The pressure control valve is satisfactory for controlling the pressure of the water supplied trom the water mains or other suitable potable supply Insulation A 5 10 The system is provided with adequate 4 insulation to satistactorily limit the energy loss trom the stored water and meets the requirements described in the national Building Regulations England and Wales Approved Document L1 Scotland Regulation 22 Standard J3 4 Northern Ireland Technical Booklet F Paragraph 3 3 5 11 The heat loss of each system while maintaining the temperature of the stored water at 65 C is shown in Table 4 Figure 3 Flow rates hot only 79 2 bar e OTe 3 bar D s 50 f 4 bar H AO A 8 bar as Static supply pressures of incoming water E 30 supply 20 3 4 valves 10 EE_ S O 10 20 30 AO 50 60 70 80 flow available Imin at entry to system hot cold mixed 7O mixed water at 40 C mixed from 60 hot water at 60 C and 40 cold water at 10 C n QO XN O oO O NO O flow out Imin of the system 34 valves O O 10 20 30 40 50 60 70 80 flow available Imin at entry to the system bar 4 bar 3 bar 2 bor Static supply pressures of incoming water supply
25. ersion includes change of product name and reference to the revised national Building Regulations Water Supply Regulations Construction Design and Management Regulations and new Conditions of Certification British Board of Agr ment P O Box No 195 Bucknalls Lane Garston Watford Herts WD25 9BA Fax O1923 665301 email mail bba star co uk website www bbacerts co uk For technical or additional information contact the Certificate holder see eee tot front page LAN For information about the Agr ment Certificate including validity and BBA scope tel Hotline 01923 665400 AGREMENT Or check the BBA website Electronic Copy cee Kwikot Limited DE 2 KWIKOT UNVENTED TECHNICAL APPROVALS cided HOT WATER STORAGE SYSTEMS 53 9 X Certificate No 96 3253 DETAIL SHEET 2 Second issue e THIS DETAIL SHEET LISTS THE COMPONENTS APPROVED FOR USE ON KWIKOT UNVENTED HOT WATER STORAGE SYSTEMS e Each product Detail Sheet lists the components that are required to be factory fitted and others which are supplied separately for fitting by the installer e The BBA has assessed each of the components as suitable for purpose This Detail Sheet must be read in conjunction with the Front Sheets and the relevant Detail Sheets Component Manutacturer supplier Setting Size and component number Line strainer Reliance Water A Controls LS75 Pressure reducing valve Reliance 312 3 ba
26. estigations 19 1 Tests were carried out in accordance with MOAT No 38 1986 to determine e capacity of storage cylinder e dimensional accuracy e mean supply temperature e outlet flow rate at various supply flow rates and pressures e time taken to heat to 60 e reheat time to 60 e standing energy loss adequacy of insulation e watertightness e resistance of the storage cylinder and expansion vessel to an internal hydrostatic pressure of 1 5 times the design pressure 7 5 bar e resistance to partial vacuum of O 1 bar absolute e flow capacity of the tundish and discharge pipework 19 2 Tests were carried out to confirm satisfactory operation of the following components when fitted In Orsysiem e cold water control valves to include pressure control valve expansion valve check valve e combined temperature and pressure relief valve e immersion heater thermostat and non seltresetting thermal cutout e line strainer 19 3 An examination was made of existing data in relation to the performance requirements of the relevant British Standards to determine the suitability and performance of cold water control valves to include pressure control valve to BS 6283 4 1991 check valve to BS 6282 1 1982 expansion valve to BS 6283 1 1991 e combined temperature and pressure relief valve to BS 6283 3 199 e line strainer immersion heater to BS EN 60335 2 73 2003 e direc
27. ge cylinder see Figure 2 Where balanced pressures are required the cold water draw off is connected as shown in Figure 2 using components supplied by the Certiticate holder 17 2 The discharge pipe is connected to and trom the tundish to a safe and visible termination point see sections 16 3 and 4 of this Detail sheet The air gap at the tundish must remain clear 18 Commissioning 18 1 The system is tilled with water and checked for watertightness The expansion vessel is checked against the manufacturer s stated specitication 3 5 bar The expansion valve and the combined temperature and pressure relief valve are manually operated to ensure water discharge trom the valves runs freely through the tundish to the termination point The valves are visually checked to ensure that they re seat satisfactorily Heat is applied to the system and is allowed to reach normal working temperature The operation of the thermostat is checked and an examination carried out to ensure that no water has discharged trom the expansion valve or the combined temperature and pressure relief valve during the heatup 18 2 On completion of the commissioning process the competent person completes the label attached to the system stating that the installation complies with the Certiticate see section 3 The following is a summary of the technical investigations carried out on the Kwikot Indirect Unvented Hot Water Storage System 19 Tests and in
28. imal During installation care should be exercised when using a blowlamp to make soldered joints on pipework adjacent to the cylinder Installation does not require soldered joints to be made direct to the system 8 Effect on water quality and prevention of waste of water The system is listed by the UKVVFBS 9 Watertightness The storage cylinder remains watertight at pressures in excess of 1 5 times the design pressure ie 7 5 bar 10 Noise The system is quiet in normal operation the tlow ot water being via conventional water pipe fittings and compares favourably with a vented hot water storage system 11 Physiological effects The insulation is a conventional material It will not encourage vermin or bacteria and is not susceptible to damage trom moisture 12 Maintenance 12 1 It is recommended that annually a competent person e inspects and cleans the line strainer and e measures the pressure in the expansion vessel and recharges as necessary Electronic Cop 12 2 The replacement or servicing of components must be carried out by a competent person using the Kwikot Technical Information and Installers Instructions or by the Certificate holder under their responsibility as the product manutacturer including that required by their warranty using components supplied by the Certiticate holder 12 3 The system may be drained using the drain valve 12 4 When the system is used in buildings subject to
29. l Detail Sheet issued 23rd September 1996 This amended version includes change of product name and reference to revised Regulations and Standards British Board of Agr ment P O Box No 195 Bucknalls Lane Garston Watford Herts WD25 9BA Fax O1923 665301 2004 email mail bba star co uk website www bbacerts co uk For technical or additional information contact the Certificate holder see front page For information about the Agr ment VAN Certificate including validity an BBA scope tel Hotline 01 1923 665400 AGREMENT or check the BBA website
30. lled used and maintained including the nature design methods and workmanship of such works 8 5 Any recommendations relating to the use or installation of this product which are contained or referred to in this Certificate are the minimum standards required to be met when the product is used They do not purport in any way to restate the requirements of the Health amp Satety at Work etc Act 1974 or of any other statutory common law or other duty which may exist at the date of this Certificate or in the future nor is conformity with such recommendations to be taken as satistying the requirements of the 1974 Act or of any present or tuture statutory common law or other duty of care In granting this Certiticate the BBA does not accept responsibility to any person or body for any loss or damage including personal injury arising as a direct or indirect result of the installation and use of this product La BRITISH BOARD OF AGREMENT TECHNICAL APPROVALS FOR CONSTRUCTION In the opinion of the British Board of Agr ment Kwikot Unvented Hot Water Storage Systems are fit for their intended use provided they are installed used and maintained as set out in this Certificate Certificate No 96 3253 is accordingly awarded to Kwikot Limited On behalf of the British Board of Agr ment Date of Third issue 10th September 2004 Ko erm ee Chief Executive Original Front Sheets issued 23rd September 1996 This amended v
31. llers falls outside the scope of this Certificate 5 15 2 tis the view of the Department of the J Environment and stated in its Approved Document G3 that to meet the requirements of the Building Regulations England and Wales concerned with unvented hot water storage systems installations should be undertaken by a competent person defined as one holding a current Registered Operative Identity Card for the installation of unvented domestic hot water storage systems issued by the Construction Industry Training Board CITB the Institute of Plumbing the Association of Installers of Unvented Hot Water Systems Scotland and Northern Ireland or an equivalent body 777 deemecHo satisty provision to Technical Standard P3 1 Unvented Hot Water Storage System for compliance with Regulation 28 of the Building Standards Scotland Regulations that such systems be in the form of a proprietary unit or package which is i the subject of a BBA Certificate or ii Kitemarked to BS 7206 1990 The Standard contains no specific requirements for installers but the Certificates referred to state that installation must be undertaken by a competent person as defined in section 15 2 k 15 3 In Scotland it is the requirement of the 45 requirement of Regulation PS Unvented Hot Water Storage Systems that systems with a capacity not greater than 500 litres and a heat input not greater than 45 kW be certitied as meeti
32. nation dimensional checks and performance tests Each storage cylinder is pressure tested and examined tor leaks during manutacture and prior to dispatch 2 Delivery and site handling 2 1 The system is delivered in a cardboard carton protected internally with polystyrene supports and wrapped in a plastic bag The following items see also Detail Sheet 2 are supplied separately with each storage cylinder for fitting on site by a competent person all other components are factory fitted cold water control valves to include a pressure control valve pressure limiting or pressure reducing valve check valve and an expansion valve line strainer indirect thermostat e wiring box e motorised valve e tundish e expansion vessel Readers are advised to check the validity of this Detail Sheet by either referring to the BBA s website www bbacerts co uk or contacting the BBA direct Telephone Hotline 01923 665400 Electronic Copy 2 2 When the system is required to be stored it must be stored in a dry environment and protected trom damage 2 3 The system must be caretully handled and kept in the delivery crate until required for siting in position The weight of each system empty and full is stated in Table 1 and on the label attached to each system 3 Labelling marking The system carries a label s bearing the intormation set out in Table 2 and is supplied with a comprehensive installation user manual Fig
33. ng the relevant requirements of Regulation P5 by a member body of EOTA operating a Technical Approvals Scheme eg by the BBA under MOAT No 38 1986 Agr ment Certificates will refer to a need for installation by a competent person as defined in section 15 2 16 Conditions The following conditions abstracted from the Certificate holder s instructions must be observed fA 15 4 In Northern Ireland it is the 1 The system is tor connection to oil electric or gas tired boilers 2 The system must be connected to a water supply with a pressure not exceeding 12 bar and of a quality supplied by a water undertaker under the Water Byelaws and Water Regulations as appropriate 3 The combined temperature and pressure reliet valve tundish must be in a clearly visible position within 500 mm of the cylinder and in the same compartment as the cylinder The discharge pipe to and trom the tundish must be of metal and laid to fall It must terminate at a visible sate place such as a gully where there is no risk of contact with the hot water by persons in or about the building Further details are given in BBA Information No 33 1989 Unvented Hot Water Storage Systems Hot Water Discharges trom Satety Devices BBA Requirements and Guidance 4 The discharge pipe from the expansion valve should be laid with a continuous fall to terminate in a suitable location The details applying to Electronic Copy discharge pipes given in BBA I
34. nt is covered with a steel outer casing and only a small area of the insulant will be exposed at connection bosses In the presence of a source ot ignition such as a plumber s blowlamp the foam will flame locally and emit toxic tumes Flaming and tume emission will stop when the source of ignition is removed 7 2 n service the steel outer casing encloses the foam and risk of ignition will be minimal During installation care should be exercised when using a blowlamp to make soldered joints on pipework adjacent to the cylinder Installation does not require soldered joints to be made direct to the system 8 Effect on water quality and prevention of waste of water The system is listed by the UKWFBS 9 Watertightness The storage cylinder remains watertight at pressures in excess of 1 5 times the design pressure ie 7 5 bar 10 Noise The system is quiet in normal operation the flow of water being via conventional water pipe fittings and compares favourably with a vented hot water storage system 11 Physiological effects The insulation is a conventional material It will not encourage vermin or bacteria and is not susceptible to damage trom moisture 12 Maintenance 12 1 It is recommended that annually a competen person e inspects and cleans the line strainer and e measures the pressure in the expansion vessel and recharges as necessary 12 2 The replacement or servicing of components must be carried out
35. nt to be carried out only by a competent person using components supplied by the Certificate holder in accordance with their instructions Any malfunction of the system such as that resulting in discharge of water trom the expansion valve or the combined temperature and pressure relief valve to be reported to a competent person alter switching off the heat source and prior fo any further use of the system The installation of the system is subject to approval under the Building Regulations Water Byelaws and Regulations the Health and Satety at Work etc Act 1974 where appropriate and the Health and Safety at Work Northern Ireland Order 1978 where appropriate Installer details Space for la Name b Address c Telephone number d Completion date e Registration No 2 A declaration that installation has been in accordance with BBA Certificate No 96 3253 with space for signature of the installer CE mark 1 The system complies with the Low Voltage Directive 73 23 EEC 2 The system when installed correctly will comply with the Electromagnetic Compatibility Directive 89 336 EEC 3 ACE mark applied to these products by the manufacturer relates only to the Low Voltage and Electromagnetic Compatibility Directive In the opinion of the BBA the application of the CE mark does not infer compliance with the requirements of the applicable Building Regulations 1 The installer must meet the definition of
36. ntormation No 33 1989 are generally recommended 5 The system is installed in locations similar to those for storage cylinders used in a conventional vented system or in other locations advantageous to the building designer see Table 1 for load weight of the system when Tull It is important to ensure there is adequate clearance for the removal of the immersion heater and the corrosion protection anode see Table 1 6 Electrical wiring must be carried out in accordance with the IEE Wiring Regulations The immersion heater circuit must be protected by a suitably rated fuse and an isolating switch with double pole disconnection 7 It is essential that the motorised valve supplied with the system is installed and is not substituted by any other motorised valve which may exist and be in service at the site of installation eg a motorised valve installed in a central heating circuit 17 Procedure Summary of installation procedure 17 1 The storage cylinder is located in position see the Kwikot Technical Information and Installers Instructions and the plumbing connections made to the inlet and outlet pipes in the same manner as for a conventional storage cylinder except that the water supply pipe is taken directly trom the mains or other suitable potable supply via the line strainer and cold water control valves ensuring the arrow markings on the components are pointing downstream to the cold water inlet of the stora
37. of product name and reference to the Watts valves and Thermtec immersion heater For technical or additional information British Board of Agr ment e504 contact the Certificate holder see P O Box No 195 Bucknalls Lane ront pagel t For information about the Agr ment Garston Watford Herts VVD25 BA POE VAN Certificate including valicliy and email mal a star COo U BRITISH scope tel Hotline 01923 665400 Fax 01923 605301 website www bbacerts co uk BBA Ho or check the BBA website Electronic Copy cee 53 3 X Kwikot Limited Certificate No 96 3253 BRITISH DETAIL SHEET 3 E PA Boarn or KWIKOT DIRECT UNVENTED en T TECHNICAL APPROVALS FOR CONSTRUCTION HOT WATER STORAGE SYSTEM Product it Detail Sheet e THIS DETAIL SHEET RELATES TO THE KWIKOT DIRECT UNVENTED HOT WATER STORAGE SYSTEM WITH A RANGE OF CAPACITIES FROM 150 TO 210 LITRES A NOMINAL OPERATING PRESSURE OF 3 0 BAR AND FITTED WITH TWO 3 kW IMMERSION HEATERS e The system is for use with mains or other suitable potable water supply pressures up to and including 12 bar available at the entry to the system is adequate see section 5 of this e Satistactory outlet How rates can only be achieved where the flow rate e It is essential for reasons of safety and performance that the product is installed and maintained in accordance with the requirements of this Detail Sheet by a competent person see section 12
38. off the supply of heat when the building is not occupied See the tinted areas of the Hot water storage and supply section of the accompanying system Detail Sheets Insulation of pipes ducts and hot water storage vessels The systems will satisty the requirements of this Regulation Unvented hot water storage systems The systems incorporate suitable safety devices to meet the requirements of this Regulation See the tinted areas of the Satety section of the accompanying system Detail Sheets Deemed to satisty provision for an unvented hot water storage system The systems will meet the deemec to satisty provisions of Regulation P Electronic Copy 4 Construction Design and Management Regulations 1994 as amended Construction Design and Management Regulations Northern Ireland 1995 as amended Information in this Certificate may assist the client planning supervisor designer and contractors to address their obligations under these Regulations See sections 2 Delivery and site handling 6 Satety 7 Properties in relation fo fire 12 Maintenance and 17 Installation procedure of the relevant Detail Sheets 5 The Health and Safety at Work etc Act 1974 and the Health and Safety at Work Northern Ireland Order 1978 In buildings subject to this Act and Order regular maintenance is a requirement See section 12 of each system Detail Sheet 6 Water Supply Water Fittings Regulations 1999 England and Wales Water Byelaws 2000
39. ot exceed 100 C and safeguard the operation of the system are For the indirect coil heat exchanger e the combined temperature and pressure relief valve and e the indirect non seltresetting thermal cutout fitted to the system and wired into the motorised valve For the direct immersion heater e the combined temperature and pressure relief valve and e the direct non selt resetting thermal cutout fitted to the system and wired into the immersion heater 1 The motorised valve must be fitted to the primary flow and appropriate electrical connections made see sections 6 9 and 16 6 2 The system has a satety warning label attached to the storage cylinder bearing an explanation of the action to be taken in the case of any malfunction of the system It is essential that the instructions are followed 6 3 The system has adequate provision for sate disposal of discharges trom the expansion valve and the combined temperature and pressure reliet valve see also sections 16 2 and 3 Physical contact 6 4 The surtaces of the storage cylinder are protected by the insulation In normal use the temperatures of the surfaces of the various parts of the system are comparable with those in a conventional vented hot water storage system Strength and stability 6 5 The system has adequate resistance to internal pressures and does not visibly detorm when subjected to a vacuum of O 1 bar absolute 6 6 The system s pre
40. r 34 Watts Redupress 3 bar 34 Combined check valve Reliance 2014 3 bai a and expansion valve Combined temperature and Reliance Water 90 C 7 bar Va pressure relief valve Controls HT55 EVR Watts SFR 52550UK 90 C 6 bar 34 Expansion vessel Altechnic Zilmet 3 bar 16 litres Tundish Reliance Water Controls 22 mm to 28 mm Immersion heater Redring LUI 1TC OA 214 Thermtec AFSTA 327 3D 16 FOC 24 Thermostat non seltresetting Integral part of 80 C thermal cutout immersion heater Indirect thermostat IMIT LSC2 Oo 10 00 e Indirect non selt resetting IMIT LSC 1 T80 co G thermal cutout Motorised valve Honeywell V4043 Dantoss DMV2C SUnVIE SZV 22 125 1 It is essential on indirectly heated systems that the motorised valve supplied with the system is installed and is not substituted by any other motorised valve which may exist and be in service at the site of installation eg a motorised valve installed in a central heating circuit Readers are advised to check the validity of this Detail Sheet by either referring to the BBA s website www bbacerts co uk or contacting the BBA direct Telephone Hotline 01923 665400 Electronic Copy La BRITISH BOARD OF AGREMENT TECHNICAL APPROVALS FOR CONSTRUCTION On behalf of the British Board of Agr ment Ko Wetec Date of Second issue 10th September 2004 Chief Executive Original Detail Sheet issued 23rd September 1996 This revised version includes change
41. rage cylinder see Figure 2 Where balanced pressures are required the cold water draw off is connected as shown in Figure 2 using components supplied by the Certiticate holder 17 2 The discharge pipe is connected to and trom the tundish to a safe and visible termination point see sections 16 2 and 3 The air gap at the tundish must remain clear Electronic Copy 18 Commissioning 18 1 The system is tilled with water and checked for watertightness The expansion vessel is checked against the manufacturer s stated specitication 3 5 bar The expansion valve and the combined temperature and pressure relief valve are manually operated to ensure water discharge trom the valves runs freely through the tundish to the termination point The valves are visually checked to ensure that they re seat satisfactorily Heat is applied to the system and is allowed to reach normal working temperature The operation of the thermostat is checked and an examination carried out to ensure that no water has discharged trom the expansion valve or the combined temperature and pressure relief valve during the heatup 18 2 On completion of the commissioning process the competent person completes the label attached to the system stating that the installation complies with the Certiticate see section 3 The following is a summary of the technical investigations carried out on the Kwikot Direct Unvented Hot Water Storage System 19 Tests and inv
42. ressure relief valves for pressures from bar to 10 bar BS 6283 4 1982 Satety and control devices for use in hot water systems Specification tor drop tight pressure reducing valves of nominal size up to and including DN 54 for supply pressures up to and including 12 bar BS 6700 PY Specification for design installation testing and maintenance of services supplying water for domestic use within buildings and their curtilages BS 7206 1990 Specification for unvented hot water storage units and packages BS EN 1057 1996 Copper and copper alloys Seamless round copper tubes for water and gas in sanitary and heating applications BS EN 60335 2 73 2003 Household and similar electrical appliances Satety Particular requirements for fixed immersion heaters MOAT No 38 1986 The assessment of unvented hot water storage systems and the approval and surveillance of installers BRITISH BOARD OF AGREMENT TECHNICAL APPROVALS FOR CONSTRUCTION On behalf of the British Board of Agr ment Date of Second issue 10th September 2004 Ko Wetec Chief Executive Original Detail Sheet issued 23rd September 1996 This revised version includes change of product name and reference to revised Regulations and Standards British Board of Agr ment P O Box No 195 Bucknalls Lane Garston Watford Herts WD25 9BA Fax O1923 665301 2004 email mail bba star co uk website www bbacerts co uk
43. s of nominal size up to and including DN 54 BS 6283 1 1991 Safety and control devices for use in hot water systems Specification for expansion valves for pressures up to and including 10 bar BS 6283 3 1991 Safety and control devices for use in hot water systems Specitication for combined temperature and pressure relief valves for pressures from bar to 10 bar BS 6283 4 1982 Safety and control devices for use in hot water systems Specification for drop tight pressure reducing valves of nominal size up to and including DN 54 for supply pressures up to and including 12 bar BS 6700 1997 Specification for design installation testing and maintenance of services supplying water for domestic use within buildings and their curtilages BS 7206 1990 Specification for unvented hot water storage units and packages BS EN 1057 1996 Copper and copper alloys Seamless round copper tubes for water and gas in sanitary and heating applications BS EN 60335 2 73 2003 Household and similar electrical appliances Satety Particular requirements for fixed immersion heaters MOAT No 38 1986 The assessment of unvented hot water storage systems and the approval and surveillance of installers La BRITISH BOARD OF AGREMENT TECHNICAL APPROVALS FOR CONSTRUCTION On behalf of the British Board of Agr ment Date of Second issue 10th September 2004 Ko Herm ee Chief Executive Origina
44. ssure control devices will ensure that the operating pressure will be controlled to a nominal 3 bar and that the design pressure of 5 bar is not exceeded Each storage cylinder has been satisfactorily pressure tested to 1 5 times the design pressure ie 7 5 bar 6 7 The weight of the system is stated on the label attached see also Table 1 the support arrangements appropriate to a conventional system apply 6 8 Care must be taken fo avoid damage to the system during handling and installation Electrical safety 6 9 The indirect thermostat non seltresetting thermal cutout and motorised valve and the direct thermostat and non selfresetting thermal cutout are approved by the BEAB to BS 3955 1986 The immersion heater is approved by the BEAB to BS EN 60335 2 73 2003 To ensure satety it is essential that the electrical wiring is carried out in accordance with the IEE Wiring Regulations Regulations for Electrical Installations Sixteenth Edition 1991 7 Properties in relation to fire 7 The expanded polyurethane foam insulant is covered with a steel outer casing and only a small area of the insulation will be exposed at connection bosses In the presence of a source of ignition such as a plumber s blowlamp the foam will flame locally and emit toxic fumes Flaming and fume emission will stop when the source of ignition is removed 7 2 n service the steel outer casing encloses the foam and risk of ignition will be min
45. sure reliet valve see also sections 16 2 and 3 Physical contact 6 4 The surtaces of the storage cylinder are protected by the insulation In normal use the temperatures of the surfaces of the various parts of the system are comparable with those in a conventional vented hot water storage system Strength and stability 6 5 The system has adequate resistance to internal pressures and does not visibly detorm when subjected to a vacuum of O 1 bar absolute 6 6 The system s pressure control devices will ensure that the operating pressure will be controlled to a nominal 3 bar and that the design pressure of 5 bar is not exceeded Each storage cylinder has been satisfactorily pressure tested to 1 5 times the design pressure ie 7 5 bar 6 7 The weight of the system is stated on the label attached see also Table 1 the support arrangements appropriate fo a conventional system apply 6 8 Care must be taken to avoid damage to the system during handling and installation Electrical safety 6 9 The thermostat and non self resetting thermal cutout are approved by the BEAB to BS 3955 1986 The immersion heater is approved by the BEAB to BS EN 60335 2 73 2003 To ensure satety it is essential that the electrical wiring is carried out in accordance with the IEE Wiring Regulations Regulations for Electrical Installations Sixteenth Edition 1991 7 Properties in relation to fire 7 1 The expanded polyurethane foam insula
46. t immersion heater thermostat non seltresetting thermal cutout to BS 3955 1986 e expansion vessel to BS 6144 1990 19 4 An examination was made of existing data relating to e adequacy of installation instructions e practicability of installation by the competent person e electrical safety e effect on water quality and prevention of waste of water e properties in relation to fire e practicability and adequacy of maintenance requirements e durability of materials used 20 Investigations The manufacturing and assembly process was examined including the methods adopted tor quality control and details were obtained of the quality and composition of materials used Electronic Co BS 2879 1980 Specification for draining taps screw down pattern BS 3955 1986 Specification for electrical controls for household and similar general purposes BS 6144 1990 Specification for expansion vessels using an internal diaphragm tor unvented hot water supply systems BS 6282 1 1982 Devices with moving parts for the prevention of contamination of water by backflow Specification for check valves of nominal size up to and including DN 54 BS 6283 1 1991 Safety and control devices for use in hot water systems Specification for expansion valves for pressures up to and including lO bar BS 6283 3 1991 Satety and control devices for use in hot water systems Specification for combined temperature and p
47. ter thermostat see section 12 2 and Detail Sheet 2 15 The installer 15 1 It is essential tor reasons of safety and performance that the installation commissioning and maintenance of the system is carried out by a person with suitable training and practical experience However the assessment of training arrangements and continuing competence of installers falls outside the scope of this Certificate 5 5 2 tis the view of the Department ot J the Environment and stated in its Approved Document G3 that to meet the requirements of the Building Regulations England and Wales concerned with unvented hot water storage systems installations should be undertaken by a competent person defined as one holding a current Registered Operative Identity Card for the installation of unvented domestic hot water storage systems issued by the Construction Industry Training Board CITB the Institute of Plumbing the Association of Installers of Unvented Hot Water Systems Scotland and Northern Ireland or an equivalent body the deemed to satisty provision to Technical Standard P3 1 Unvented Hot Water Storage System for compliance with Regulation 28 of the Building Standards Scotland Regulations that such systems be in the form of a proprietary unit or package which is i the subject of a BBA Certiticate or ii Kitemarked to BS 7206 1990 The Standard contains no specific requirements for installers but the Certific
48. the Health and Satety at Work etc Act 1974 an inspection of the system must be carried out every six months 13 Site checks On site the following should be checked By the Client 1 The installer is a competent person by reterence to his her identity card 2 The system being installed is BBA Certiticated by reference to the label 3 That the installation complies with the BBA Certificate by reference to the installer s signature on the label attached to the cylinder By the Building Control Officer or Approved Inspector 1 1 2 and 3 as above 2 The combined temperature and pressure reliet valve thermostats non self resetting thermal cutouts motorised valve and the immersion heater are as described in the Certificate 3 The tundish and discharge pipework are correctly located and fitted 14 Durability The system is manufactured trom durable materials and conventional plumbing components and will have a lite equal to that expected of a vented system It may be necessary to replace some of the system components eg the immersion heater thermostat see section 12 2 and Detail Sheet 2 15 The installer 15 1 It is essential tor reasons of safety and performance that the installation commissioning and maintenance of the system is carried out by a person with suitable training and practical experience However the assessment of training arrangements and continuing competence ot insta
49. the installer CE mark 1 The system complies with the Low Voltage Directive 73 23 EEC 2 The system when installed correctly will comply with the Electromagnetic Compatibility Directive 89 336 EEC 3 ACE mark applied to these products by the manufacturer relates only to the Low Voltage and Electromagnetic Compatibility Directive In the opinion of the BBA the application of the CE mark does not infer compliance with the requirements of the applicable Building Regulations 1 The installer must meet the definition of a competent person as defined in section 15 2 Electronic Copy Figure 2 Schematic layout direct anode expansion vessel combined temperature cold water control valves expansion valve I I I I I I I I I I pressure I control I I I I I I I I I I I isolating valve line strainer valve and pressure relief valve hot draw off immersion heater non selt resetting thermal cutout and thermostat cold feed gt check valve EEEE Rees eee discharge pipe to safe position balanced pressure see section 16 2 cold draw off and DI drain valve Table 3 Heating reheating and water draw olf temperature A B E D E F System Heat source Heatup Percentage of the capacity Mean Reheating Upper Quantity ret immersion time and amount drawn off within draw olt time immersion available heater 10 C of set temperature tempera
50. ture heatup above time AG kVV minutes litres C minutes minutes litres Delo 3 187 90 135 60 oy D2 gl DZO 5 250 93 195 60 AF 60 56 iy eee 4 3 The pressure and flow available from the aa E a water mains should be obtained from the local ane T reggie wns roa or 7 testing erik supplies fo maximum daily establis t e likely perrormance of tne system at W kWh peak periods ae we eke 4 4 It is essential tor reasons of safety and D210 Hs Dad 1 These figures relate to a 45 C differential between the stored water and ambient temperature 4 General 4 1 The Kwikot Direct Unvented Hot Water Storage System see Figure 2 has been assessed in accordance with MOAT No 38 1986 When used in accordance with this Detail Sheet the system will perform in a sate and satisfactory manner 4 2 The hot water system capacity should be selected in accordance with the recommendations of BS 6700 1997 to meet the demands required trom the installation performance that installation of the system is undertaken only by a competent person working in accordance with this Detail Sheet 4 5 The data shown in Tables 3 and 4 represent the analysis of tests carried out by the BBA 5 Hot water storage and supply Hot water storage 5 1 The capacities of the system range are comparable with conventional systems see Table 1 When heated to 60 C the system can supply 70 of the storage capacity at the mean temperature given in Ta
51. upply to control valves mm compression fitting 22 22 22 balanced cold water draw off mm compression fitting 22 22 22 cold water inlet to storage cylinder BSP inches male 3 4 34 3 4 hot water draw off BSP inches male 34 34 34 expansion valve discharge BSP inches male Yo Yo Yo temperature and pressure relief valve discharge BSP inches female Yo Yo Yo Immersion heater rating at 240 V kVV 3 3 3 heater length mm 280 280 280 Anode length mm 325 370 480 Primary coil diameter mm 22 22 22 heating surface area m 1 09 1 09 1 09 Table Storage capacities and dimensions Manufacturer s system reference Labels General 2 Oo na KR amp W 7 The BBA identification mark incorporating the number of this Certificate The system uses BEAB British Electrical Approvals Board approved electrical controls UKWEBS United Kingdom Water Fittings Byelaws Scheme list number Manufacturer s name Product code number Serial number The system is an unvented system Design OOaR WN N Maximum water supply pressure bar Operating pressure bar Expansion valve setting bar Immersion heater s Power voltage Type BS Length Storage capacity litres Weight of unit full kg Expansion vessel charge pressure bar Safety warnings conditions 2 3 4 Installation to be carried out only by a competent person The removal replacement of any compone
52. ure General layout Key to Figure 1 4 N OODOAONA ABR 4 Storage cylinder manufactured from 2 mm thick steel Combined temperature and pressure relief valve see Detail Sheet 2 Factory fitted Expansion vessel Insulation PU foam covered by white epoxy coated steel outer casing Corrosion protection magnesium alloy anode Cold water feed 34 male BSP Hot water draw off 34 female BSP Drain valve to BS 2879 1980 Motorised valve to BS 3955 1986 see Detail Sheet 2 Primary flow 34 BSP male threaded connection Primary return 94 BSP male threaded connection ndirect cylinder thermostat to BS 3955 1986 adjustable between 30 C and 80 C see Detail Sheet 2 ndirect cylinder non selFresetting thermal cutout to BS 3955 1986 operates at 85 C Factory fitted Tundish 22 mm compression fitting inlet 28 mm compression fitting outlet both to BS 864 2 1983 Immersion heater Steel coil heat exchanger Cold water control valves see Detail Sheet 2 line strainer check valve expansion valve pressure reducing valve Table 1 125 150 210 Storage capacity litres 125 150 210 Cylinder size mm height 892 1036 1382 diameter A50 A50 A50 overall height 946 1090 1436 overall diameter 525 525 525 Weight of cylinder kg empty 63 7O 87 full 188 220 297 Expansion vessel capacity litres 16 16 16 Connection sizes mains water s
53. vestigations 19 1 Tests were carried out in accordance with MOAT No 38 1986 to determine e capacity of storage cylinder e dimensional accuracy e mean supply temperature e outlet flow rate at various supply flow rates and pressures e time taken to heat to 60 C e reheat time to 60 C e standing energy loss adequacy of insulation e watertightness e resistance of the storage cylinder and expansion vessel fo an internal hydrostatic pressure of 1 5 times the design pressure 7 5 bar e resistance to partial vacuum of O 1 bar absolute e flow capacity of the tundish and discharge pipework 19 2 Tests were carried out to confirm satisfactory operation of the following components when fitted in a system cold water control valves to include pressure control valve expansion valve check valve e combined temperature and pressure relief valve e immersion heater thermostat and non seltresetting thermal cutout e line strainer e motorised valve 19 3 An examination was made of existing data in relation to the performance requirements of the relevant British Standards to determine the suitability and performance of cold water control valves to include pressure control valve to BS 6283 4 1991 check valve to BS 6282 1 1982 expansion valve to BS 6283 1 1991 e combined temperature and pressure relief valve to BS 6283 3 199 e line strainer e immersion heater to BS EN 60335
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