Design and Installation Manual Issue: UK
Contents
1. BOA AG Jm p d A Wwe Expansion Joints IN Metal Hoses Metal Bellows Contents 1 Scope of Design and Installation Guide 1 lesse eeeeeee ee eeeee eene eene nnne nennen nnn 5 1 1 Supporting DOCUIMEIS sciet eode raian pU UPS con utro este E EEE EE eM DP T RPM uA 5 JU AB io 6 1 3 Competence and system conformity sees nnne nnne nnn nnn nnns 6 1 9 1 COMPOTION O vice sits M 6 1 3 2 System CONTOMMILY 6 2 Description of the BOAGAZ System and System Components ee eeeeee esee 7 24146959 THDIDO GINS lis OMS ous owaden meia T Er ERO OM SEU Mte MUR MA ENIM UIN EE E 7 2 2 BOAGAZ Male mechanical Joints uas odis tose sacs quid dus oda o see seed uaaaesin teen stave docrsuba uisus Dae aani menses 7 2 9 BOAGAZ Female mechanical OIMS io orto o qoa uo odo o Sup tabu aea a ia ia Na 8 Zia OA COUN S m e 8 ZOD CON Te ipeMI T RT T 9 2 6 Pipe Supports with quick locking SYStOM cccccceeccceeececeeeeeceeeeeseeeeseeeeeseeceeseecesseeeesseeeesaeeessneeessaeees 9 NS SOON geo e 10 VE elofcliu du 10 PAS eel O E KIlle eee eee eee Orton dM ceteri Neue D2. Corrugated Stainless Steel Pliable Tubing System for Gas Installations in Buildings p m p P WA i al ml 1 ze i L LS 3 Fi i hg So 1 has s a 2 a a a L me i oo h MA P Lum s n ODEN 4 4 Pm 3 D aT Ys FF Fl E Er E mi cl Fall meam p NS L Lj D kuy z al l T Tm FAL z d Design and Installation Manual Issue UK Version 1 2010 04 24 p BOAGAZ r pon ac Cire Ex ion Joint THAIS Metal Hoses Metal Betows User Warnings All gas installation work shall be carried out by a business or self employed operative who is a member of a Class of persons approved by the Health and Safety Executive HSE Current registration body is Gas Safe Register Acceptable certificates of competence are those issued under the Nationally Accredited Certification Scheme ACS for individual gas fitting operatives or Scottish National Vocational Qualifications NVQ that have been aligned to ACS in matters of gas safety Only those components provided or specified by BOA as part of the approved Corrugated Stainless Steel Pliable Tube CSSPT system are to be used in the installation The BOAGAZ system of CSSPT and fittings is not compatible with other manufacturer s flexible gas piping systems It is important to note that any mixing of products may result in failure of the system with potentially serious consequences All gas appliances and other gas fittings must
3. Figure 13 Brick and block plastered wall 1 Individual adhesive dabs 3 Gas tubing 2 Continuous adhesive dabs to surround tubing Figure 14 Brick and block with dry lining on dabs BOAGAZ Design and Installation Manual Issue UK Version 1 2010 04 23 27 n BOAGAZ BOA AG Expansion Joints Metal Hoses Metal Bellows 1 Timber battens 2 BOAGAZ tubing Figure 15 Brick and block dry lined on battens 1 Timber stud 4 Plasterboard 2 BOAGAZ tubing 5 Metallic protection 3 Blocking piece 6 Vapour control barrier Figure 16 Timber frame construction BOAGAZ Design and Installation Manual Issue UK Version 1 2010 04 23 28 Vg AI h BOAGAZ VZ BOA AG NE Expansion Joints TAN Metal Hoses Metal Bellows N 5 13 Exterior tubing The BOAGAZ system can be installed outside when it is adequately protected against adverse weather conditions and mechanical damage 5 14 Connection and disconnection of BOAGAZ CSSPT and fittings Where any BOAGAZ installation tubing is no longer required the tubing shall be disconnected as close to the point of supply as practicable All tubing ends shall be sealed e g with a plug or cap During any work that necessitates connection or disconnection of any installed BOAGAZ tubing a tem porary continuity bond shall be fixed where production of a spark or shock could cause a hazard whether o
4. Avoid repeated bending during installation moma py o eeben s esee radius R mm 25 LAN RN ERN HHHWHHWUMH MIP hy n rr PIE Mae AA iy gt gt T N WS NM L L CNN N iiil lili ili pu m d pz qm 3d 5 5 2 DN1 DN2 DN2 DN3 Table 14 Recommended installed bend radii ISO 10380 EN 15266 according to EN ISO 10380 2003 Table 2 Type 3 5 2 Fitting Assembly The nut should be tightened until it bottoms out on the body The tightening torque should not exceed the values listed in the following table BOAGAZ Design and Installation Manual Issue UK Version 1 2010 04 23 Maximum tightenin DN15 DN20 163 DN25 217 DN32 271 Table 15 Maximum tightening torques for BOA GAZ fittings eS Vlg h BOAGAZ 2 TAN Expansion Joints Metal Hoses Metal Bellows M 5 3 Sleeves BOAGAZ tubing passing through a solid wall or a floor needs to be sleeved The coating or cover sleeve shall be made of a material capable of containing gas such as steel polyethylene PE or polyvinyl chlo ride PVC A sleeve is required to pass through the full width of a wall or the full thickness of the floor and must not adversely affect the fire resistance of the building The annular space between the BOAGAZ tubing and the sleeve needs to be sealed to the tubing at one end with flexible fire resistant compound In th
5. To guarantee optimum fire resistance use matching fire resistant threaded rods and rawplugs for fixing the tubing clamps to the building structure We recommend the BIS Stud Bolts and the BIS Drop in an chors and setting tools from Walraven www walraven eu Max admissible load kN FO lt 0 55 sos S Table 18 Fire resistance times for the BISMAT Flash M8 M10 tubing clamps in conjunction with threaded rods dimensions 2 M8 and M10 Strength Class 4 6 depending on maximum load BOAGAZ Design and Installation Manual Issue UK Version 1 2010 04 23 21 h BOAGAZ 4 BOA AG NE Expansion Joints TAN Metal Hoses Metal Bellows MZ x All values for the BOAGAZ BISMAT Flash pipe clamps only apply in conjunction with threaded rods dimensions 2 M8 and M10 Strength Class 4 6 depending on maximum load For applications BOAGAZ BISMAT Flash M8 M10 pipe clamps in the space between ceilings and suspended ceiling structures that are relevant to fire safety a minimum distance min a is defined on the safe side between the top of the suspended ceiling and the bottom of the clips in order to prevent a nega tive impact on the suspended ceiling structure as a result of the temperature related vertical clip deforma tions as well as changes in the length of the threaded rods Here the maximum suspension height of the clip components with the threaded rods must be limited for fire safety reasons to ha lt 1000 mm insofar as
6. building and as near as practical to the point of entry of the installation tubing into the building Alternatively the connection may be made within the box compartment but it is essential that the bonding cable does not interfere with the integrity of the box compartment and the sealing of any sleeve see Fig ure 4 When relocating a meter an existing main equipotential bond may be satisfactory as found or it may need to be either lengthened or shortened or in some cases completely re run The bonding connection is satisfactory if the conditions a to d above are met a internal meter installation b meter installation in external box compartment 1 BOAGAZ tubing 1 Bonding connection non preferred position 2 Fitting 2 Tubing sleeve sealed 3 Bonding connection 3 BOAGAZ tubing 4 Green yellow cable to consumer earth 4 Bonding connection preferred position terminal 5 Box compartment 5 ECV Emergency Control Valve Figure 4 Main equipotential bonding BOAGAZ Design and Installation Manual Issue UK Version 1 2010 04 23 18 yp BOAGAZ 392 BOA AG WE Expansion Joints TAN Metal Hose Metal Bellows y W N 1 Bonding wire 3 Bonding connection 2 BOAGAZ tubing 4 BOAGAZ Fitting Figure 5 Main equipotential bonding connection detail 5 6 Cutting and fitting The following is a step by step procedure for cutting BOAGAZ CSSPT to length and fitting a connection Step 1 Determine t
7. construction see Figure 16 5 12 1 Tubing runs BOAGAZ tubing shall wherever possible be mounted vertically in ducts within which there are suitably located access points or else positioned in tubing chases Tubing shall be secured to minimise movement and have as few joints as practicable 5 12 2 Cavity walls BOAGAZ tubing shall not be positioned within the cavities of cavity walls When tubing passes through such walls they must be sleeved and take the shortest practicable route 5 12 3 Dry lined walls When installing BOAGAZ tubing behind dry lining tubing shall be encased by building material 5 12 4 Timber construction walls For BOAGAZ tubing installed within the walls of timber frame buildings the tubing shall be a run within channels or ducts that are purpose designed b adequately secured C protected against mechanical damage within any void space d suitably protected against corrosion 5 12 5 Solid Walls All BOAGAZ tubing shall be sleeved see 5 3 BOAGAZ tubing should be secured at each floor but will be free to move away from potential puncture threats behind plasterboard and other wall surfaces BOAGAZ Design and Installation Manual Issue UK Version 1 2010 04 23 26 BOAGAZ amp BOA AG Expansion Joints Metal Hoses Metal Bellows 1 Gas tubing set in chase 3 Gas tubing set in chase in plastered wall 2 Chase depth Maximum depth of chase T 6 horizontal T 3 vertical
8. knock out holes which are pre drilled Where these joists are to be drilled it is essential that the recommendations of the joist manufacturer are always followed BOAGAZ tubing is particularly suitable for this system of joists as it can be threaded between joists with ease and so is compatible with this system Before laying BOAGAZ tubing below suspended floors a vis ual inspection should be carried out to note the position of any electrical cables junction boxes and ancil lary equipment in order that accidental damage or injury does not occur when inserting BOAGAZ tubing see 4 1 Re fixing flooring over BOAGAZ tubing should also be done with care see 4 1 a Limits for notching C Alternative limits for notching b Limits for drilling of joists 1 Minimum 100mm between notch and hole 2 Holes not closer than 3 x diameter Figure 9 Limits for notches and drilling of solid timber floors BOAGAZ Design and Installation Manual Issue UK Version 1 2010 04 23 23 BOAGAZ Expansion Joints Metal Hoses Metal Bellows 5 11 BOAGAZ tubing laid in concrete floors 5 11 1 General BOAGAZ CSSPT may NOT be buried directly in concrete floors Tubing laid in concrete shall be in stalled in accordance with Figures 10 12 and shall be sleeved in accordance with 5 3 Figures 10 12 illustrate how the BOAGAZ tubing should be installed in e ground bearing concrete floors Figure 10 a suspended c
9. no other proof is available Table below states the minimum distances min a for fire resistance times of 30 to 90 minutes on the safe side The values stated in this table take account of the temperature related changes in length in the threaded rods used to suspend the ceiling and the maximum vertical deforma tions depending on the clamping range of the BOAGAZ BISMAT Flash M8 M10 clamps Clamping size range for the BISMAT Flash Minimum distances min a in mm M8 and M8 M10 pipe for fire resistance times of 30 to 90 minutes clamps Suspension height h 250 lt 500 lt 750 lt 1000 Table 19 Minimum distances min a in mm for application in the space between ceilings suspended with fire safety relevant suspended ceiling structures depending on the clamping size range as well as the suspension height ha lt 1000 mm 5 9 BOAGAZ tubing system materials BOAGAZ CSSPT Stainless steel 1 4404 BOAGAZ tubing protective cover PE BOAGAZ mechanical joint fittings Brass CW 603N or CW612N BOAGAZ gaskets in mechanical joint fittings Elastomer to EN 549 5 10 BOAGAZ CSSPT in wooden joisted floors 5 10 1 Installation between floor joists or roof spaces Where BOAGAZ tubing is installed between floor joists or roof spaces it shall be properly supported BS 6891 specifies a maximum spacing between the BOAGAZ pipe supports of 2 0m for a vertical run and 1 5m for a horizontal run for sizes up to 15 mm or DN15 and of 2 5m for
10. premises with installation tubing sizes not exceeding DA 25 for steel and DA 28 for corrugated stainless steel or copper BS 6891 2005 A2 2008 nstallation of low pressure gas tubing of up to 25 mm R1 14 in domestic premises 2nd family gas IGE UP 1 New Edition 2 2003 Strength testing tightness testing of industrial and commercial gas installations IGE UP 1A New Edition 2 2003 Strength testing tightness testing and direct purging of small low pressure industrial and commercial Natural Gas Applications IGE UP 1B Edition 2 Tightness testing and purging of domestic sized Natural Gas Installations IGE UP 2 Edition 2 2008 Utilization Procedures Gas Installation Tubing Boosters and Com pressors on Industrial and Commercial Premises BS EN 1775 2007 Gas supply Gas tubing for buildings Maximum operating pressure less than or equal to 5 bar Functional recommendations BS 476 Fire resistance of building materials elements BS 7671 2008 Requirements for electrical installations IEE Wiring Regulations Seventeenth edi tion BS 7671 Requirements for electrical installations BS 6004 2000 Electric cables PVC insulated non armoured cables for voltages up to and includ ing 450 750 V for electric power lighting and internal wiring BS 6400 2 2006 Specification for installation exchange relocation and removal of gas meters with a maximum capacity not exceeding 6 m h Medium pressure 2nd family gases BS
11. there are no open ends on the tubing system Following this the procedure in IGE UP 1B should be followed 7 2 Existing installations Here gas tightness should be checked using natural gas propane or butane as provided by the con nected gas supply The gas tightness testing should be carried out as per IGE UP 1B depending upon whether the maximum operating pressure is less than 75mbar or greater than 75mbar and with a test valve fitted to the installa tion tubing system 7 3 Purging IGE UP 1B requires that whenever a gas supply system is commissioned or re commissioned after being turned off any air in the system must be purged First the system should pass a satisfactory tightness test as indicated in 7 1 and 7 2 above 8 Damage and Repair If the BOAGAZ tubing is damaged determine the extent of the damage and the method of repair 8 1 Small visible damages to the cover Damage to the cover can lead to corrosion of the BOAGAZ tubing Repair any damage of the cover by wrapping with tape 8 2 Damage of tubing The tubing must be replaced in the following cases a The tubing has been excessively bent below the minimum bend radius so that the internal cross section has been deformed in shape b The tubing has been punctured by nails or other sharp objects C The tubing has been significantly crushed Replace the entire tubing run In most cases when the tubing run is short and easily accessible it can be rep
12. wash Zinc Chloride and Ammonium Chloride soldering flux pool algaecide Calcium or Sodium Hypochlorite bleach or pool chemicals Copper Chloride may be found in fungicides or wood preservatives Ferric Chloride swimming pool flocculent Phosphoric Acid scale removers Sodium Chloride salt water Sulphuric Acid battery acid Leak detection with chloride containing compounds found in some common soap e g dishwashing soap can corrode BOAGAZ CSSPT Avoid use of these compounds in connection with BOAGAZ Any leak detection solution coming in contact with the BOAGAZ system should have a sulphur chlorine and halogen content of less than 10 ppm of each BOAGAZ Design and Installation Manual Issue UK Version 1 2010 04 23 29 las NS AlN h BOAGAZ O u Expansion Joints AN Metal Hoses Metal Bellows Y M 7 Gas tightness testing and purging An assembled BOAGAZ gas supply installation shall be tested for gas tightness and purged in compli ance with IGE UP 1B 7 1 New installations When new BOAGAZ tubing is installed in a property it has to be tightness tested using natural gas pro pane or butane as appropriate once the connection to a gas supply has taken place If such a gas supply connection has not been made then pressurised air should be used A visual inspection of joints should be made to ensure they have been correctly made and a check should then be made to confirm
13. 6 Free area of ventilation openings cccccccccccsesceeeeeeeeeeeeeceeesaeeeeeseeeeeeseeeeeesseeeeesseeeeeseseeesaaeeees 17 Table 17 Recommended Support Spacing ccccceeccceeecceeececaeececeeececeeeeseeeeseueeseecessuecesaeeessueeeseeeeesaeees 21 Table 18 Fire resistance times for the BISMAT Flash M8 M10 tubing clamps in conjunction with threaded rods dimensions 2 M8 and M10 Strength Class 4 6 depending on maximum load 21 Table 19 Minimum distances min a in mm for application in the space between ceilings suspended with fire safety relevant suspended ceiling structures depending on the clamping size range as well as the suspension height ha lt 1000 mm sssssssssssssssessseeeneeeen nennen nnne nnne nnne nnne nnns nnn nennen nnns 22 Figures Figure 1 Example of a tube sizing calculation ccccecccccseeeeeeeeeeeeeeeeeeseeeeeeeeeeeeeeeaeeeeesaaeeeeeaeeeeeesaneeeeas 12 Figure 2 Elements of a typical installation in multi storey buildings containing flats or maisonettes installation via a ventilated GUCT cccccceeccsescecesscecesececesecceeseceeaneesegeessaeeeseaeceneuecesaseeesaseeesaeeensueseneuesenaes 14 Figure 3 Elements of typical installation tubing in multi storey buildings containing flats or maisonettes installation via a ventilated enclosed area sesessssssseeeesenneee nennen nennen 15 Figure 4 Main equipotential bondi
14. 6231 2006 Electric cables Single core PVC insulated flexible cables of rated voltage 600 1000 V for switchgear and control gear wiring BS 6007 2006 Electric cables Single core unsheathed heat resisting cables for voltages up to and including 450 750 V for internal wiring BOAGAZ Design and Installation Manual Issue UK Version 1 2010 04 23 IAS NS AlN h BOAGAZ M un ne Expansion Joints AN Metal Hoses Metal Bellows w 1 2 Definitions Bending radius The radius measured to the centre line of the BOAGAZ CSSPT Minimum bending radius Minimum radius at which the BOAGAZ CSSPT Recommended bending radius Recommended radius above which the BOAGAZ CSSPT is designed to operate with no pressure drop attributable to the bend Tightening Torque Maximum allowable nut tightening torques for connecting fittings to BOAGAZ CSSPT Mechanical joint EN1775 Metal to metal connection within which gas tightness is achieved by threaded compression of the two component parts and possibly a sealing jointing compound Mechanical coupling EN 1775 1 3 Competence and system conformity 1 3 1 Competence All gas installation work shall be carried out by a business or self employed operative who is a member of a class of persons approved by the Health and Safety Executive HSE Currently Gas Safe Register is the Registration Body Acceptable certificates of competence are those issued under the Nationally Accredite
15. BOAGAZ tubing shall be plugged capped or terminated with a self sealing appliance connector conforming to BS 669 Part 1 or BS 669 Part 2 as appropriate be fore the work is left unattended Following the completion of work open ends of all BOAGAZ tubing shall be plugged capped or termi nated When running BOAGAZ tubing in intermediate floors within dwellings care should be taken to note the position of electrical cables junction boxes and associated equipment so that accidental damage or in jury is prevented when introducing the tubing Similarly BOAGAZ tubing location should be marked so that re fixing floors using nails or screws can be done safely BOAGAZ Design and Installation Manual Issue UK Version 1 2010 04 23 13 X A BOAGAZ 8 BOA AG ANNE Expansion Joints AN Metal Hoses Metal Bellows Hj S 4 2 Fire protection In buildings containing flats and or maisonettes BOAGAZ installations shall be fire stopped as BOA GAZ tubing passes from one floor to another unless they are installed in their own fire protected shaft that is ventilated top and bottom to outside atmosphere see Figures 2 and 3 Fire stopping material should be tested in accordance with BS 476 and be able to resist fire for periods that are in line with that required for the structure load bearing capacity integrity and insulation For BOAGAZ tubing passing through ducts the normal minimum period of fire resistance is 30min
16. BS 6891 2005 dictates that the BOAGAZ CSSPT shall either be physically protected or else positioned within a property in a location where it is not prone to being mechanically damaged Similarly the bore of the BOAGAZ tubing shall not be affected by kinking burring foreign material within the tubing or by any other means Additionally all system hardware should be stored in its original packaging prior to installation and kept in a dry location Gas tubing should not be left outside prior to installation The BOAGAZ tubing shall be of adequate length and capacity BOAGAZ tubing exposed to extreme low temperature should be allowed to warm up to room tempera BOAGAZ tubing may be routed through concrete floors or walls provided it is passed through previously embedded conduit BOAGAZ tubing shall not be buried directly underground Carefully unwind and route the BOAGAZ tubing from the reel to the required location making certain not to kink tangle or apply excessive force BOAGAZ tubing ends must be temporarily capped or taped closed prior to installation to prevent con tamination from foreign material When installing BOAGAZ tubing avoid sharp bends stretching kinking twisting or contacting sharp ob jects The tubing shall be replaced if damage occurs Make continuous runs wherever possible 5 1 Minimum bend radii Regardless of the condition large smooth radius bends are preferred in order to reduce pressure loss
17. N E DI LI A MMC ID MD LS CLAN EE 10 3 Planning and SIZING m 11 SEC e nics nsaeedenuetsastantcaeeteen E E 11 3 1 1 Equivalent tubing lengths ce cccceceeceeeeeseeeeeseeeeeseeeeseeeeeseaeeeeeeeseeeeseeeeesausesseeeeeseeeesaneeesaees 11 3 2 Sizing gas SUMO NTC NE 12 4 Safety DICCAUTONS axasicsinogrikwnknvzas e a Neuss FLYER c0 INI KRROKU EUN DU CUIUS FE iC URN EC MER EK KURSE nV EE MI EUE 13 Me A ST VST MEMINI E E S E E E E A A A E A A E 13 4 2 Fire protection RM 14 5 TNS CAN AUION Pr ACUIC C oiii AEE E E EAEEREN 16 SM MNM pend radisson mommy 16 SAFIGA SONDY eene ne E E E E EE E E EE 16 9 0 SIGOVDES AEE E E A O TE EEE E A E E E ene errr 17 Fe AON MNCL S ae EE m y 17 5 4 1 Installation in ventilated ducts lessen nnn nnns 17 0 4 2 Installation in unventilated ducts ccc cceececceeeeeeeeeeeeeeeesaeeeeseaeeseaeeeseeeeseeeessaneesseeeeeseeesaaaeeesanees 17 5 5 Main equipotential bonding cccccsccccseeceneeceeeeceeccseeceueceeeceuceceueesaueesseeseeeseueessueesseeesseesseeessneess 17 Oe tnig akeg eDi g e MM A 19 5 7 BOAGAZ Supports and support SPACING cccccseecccseececeeececeeeeeseeeeseeeesseeesseeeesseeeesseeeseeeeeseeeenes 20 So UDO aaea E le E T E EE E E E E E EA eee 21 5 9 BOAGAZ tubing system MaterialS cccccccccse
18. SIB Male Female Appliance a Flow tional flow p ing Thread Thread Connection E 0 16m 0 64m 0 34m 0 12m 027m 0 21m 0 30 m DN20 Table 11 Equivalent tubing lengths for fittings and bends for 1 mbar differential pressure BOAGAZ Design and Installation Manual Issue UK Version 1 2010 04 23 11 h BOAGAZ 4 BOA AG NE Expansion Joints TAN Metal Hoses Metal Bellows VB x 3 2 Sizing gas supplies In order to determine the size of the BOAGAZ CSSPT required for a specific natural gas application the recommended approach is to allow for a 1mbar maximum pressure drop between the meter outlet and the inlets of appliances to be supplied The BOAGAZ CSSPT size to be used should be such that each ap pliance can operate satisfactorily at the same time at their maximum gas rate Figure 1 represents an example of the lengths of the supply tubing together with the appliance gas rates involved Table 12 Tubing has been sized using Table 10 and the results presented in Table 13 Due consideration should be given to the pressure loss permitted in each section of the application e g the drop in pressure between A and H should not be greater than 1mbar Each of the four elements of section A to H A B B D D F and F H carries a different gas rate and needs to be sized separately With a total pressure drop permitted of 1mbar each sub section should carry a drop in pressure of no more than 0 25mbar When calcu
19. a vertical run and 2 0m for a horizontal run for larger sizes BOAGAZ Design and Installation Manual Issue UK Version 1 2010 04 23 22 A BOAGAZ VZ BOA AG Expansion Joints AN Metal Hoses Metal Bellows SZ UN 5 10 2 Installation across joists in ceiling or roof spaces Where BOAGAZ tubing is laid across the joists in ceiling or roof spaces fitted with flooring it shall be lo cated in purpose made notches or possibly circular holes see Figure 9 Joists less than 100 mm shall not be notched 5 10 3 Installation in intermediate joisted floors Where BOAGAZ tubing is laid in intermediate joisted floors within dwellings unless there is sufficient adventitious ventilation ventilation shall be in accordance with Table 16 above 5 4 1 For BOAGAZ tubing supplying natural gas between floors research has recently demonstrated there is no requirement to incorporate ventilation in intermediate floors within conventional masonry timber or light steel frame buildings Minor leakage of natural gas should be dispersed safely in these situations However as the research did not cover LPG leakage tubing supplying LPG via intermediate floors shall be ventilated in accordance with Table 16 Specialist joist systems constructed of wood that are similar in appearance to rolled steel joists are now used in properties which cannot be notched for structural reasons However such joists can either be drilled or are supplied with
20. be installed with due regard to the manufacturer s installa tion instructions the Gas Safety Installation and Use Regulations 1998 and the relevant requirements of the Building Regulations and British Standards Improper installation methods or procedures could lead to accidents such as explosions fires gas poi soning asphyxiation etc The BOAGAZ CSSPT system shall be installed with strict adherence to this guide as well as local building regulation All installed systems must pass installation inspections by the authorized local building official prior to being placed in service BOA AG shall have no responsibility for any misinterpretation of the information contained in this guide or any improper installation or repair work or other deviation from procedures recommended in this manual whether pursuant to local building regu lation or engineering specifications or otherwise Although the BOAGAZ CSSPT system provides significant advantages over more rigid gas delivery sys tems its wall dimensions may make it more likely than steel tubing to be punctured by a nail or other sharp objects or damaged by other extraordinary forces such as a lightning strike depending on the cir cumstances The user must ensure that the system is properly bonded and grounded No naked flame shall to be used in the vicinity of any part of the BOAGAZ CSSPT system BOAGAZ Design and Installation Manual Issue UK Version 1 2010 04 23 2 h BOAGAZ
21. bing may be continu ously sleeved to allow it to pass through such a duct or void safely BOAGAZ tubing must not be installed in a cavity wall neither shall it pass through a cavity wall except by the shortest possible route and even then it must be sleeved see 5 3 5 5 Main equipotential bonding All domestic gas installations shall have main equipotential bonding of the gas installation conforming to BS 7671 BOAGAZ Design and Installation Manual Issue UK Version 1 2010 04 23 17 X S JY h BOAGAZ S 2 TAN Expansion Joints Metal Hoses Metal Bellows WY Main equipotential bonding shall be connected a onthe customer s side of the meter b as close as practicable to the meter before any branch in the installation tubing C in a position where it is accessible can be visually observed and fitted with a warning label stat ing Safety electrical connection Do not remove d by a mechanically and electrically sound connection which is not subject to corrosion Main equipotential bonding of the gas installation tubing should be made using cable with minimum cross sectional area of 10mm cable with green and yellow insulation construction reference 6419X conforming to BS 6004 For internal meters the bonding should be within 600mm of the meter outlet in order to allow for inspec tion verification For meters in outside meter boxes compartments the bonding connection should be preferably inside the
22. d 6 Insulation 3 BOAGAZ tubing fitted with soft sleeving 7 Damp proof membrane and laid in screed 8 Hardcore and sand blinding 9 Protection tubing Figure 10 Ground bearing concrete floors BOAGAZ Design and Installation Manual Issue UK Version 1 2010 04 23 24 Expansion Joints Metal Hoses Metal Bellows BOAGAZ amp 6 E 2 m SG 3 4 5 1 Chipboard over insulation 5 Precast beam and block 2 Chipboard 6 BOAGAZ tubing laid in insulation layer 3 Insulation 7 Ventilated void 4 Damp proof membrane Figure 11 Suspended concrete floor 1 BOAGAZ tubing laid in insulation layer 6 Concrete raft 2 Chipboard over insulation 7 Reinforced concrete screed 3 Screed over insulation 8 BOAGAZ tubing laid in reinforced 4 Insulation concrete screed 5 Damp proof membrane 9 Tubing protection Figure 12 Concrete rafts BOAGAZ Design and Installation Manual Issue UK Version 1 2010 04 23 25 las X AlN h BOAGAZ O u Expansion Joints AN Metal Hoses Metal Bellows Y M 5 12 BOAGAZ CSSPT in walls Examples of BOAGAZ tubing in masonry and timber frame walls are presented in Figures 13 16 These illustrate installation into walls that are brick and block plastered Figure 13 brick and block with dry lining on dabs Figure 14 brick and block dry lined on battens Figure 15 timber frame
23. d Certifica tion Scheme ACS for individual gas fitting operatives or Scottish National Vocational Qualifications NVQ that have been aligned to ACS in matters of gas safety 1 3 2 System conformity Only those components provided or specified by BOA as part of the approved piping system are to be used in the installation The BOAGAZ CSSPT system of piping and fittings is not compatible with other manufacturer s flexible gas piping systems It is important to note that any mixing of products may result in failure of the system with potentially serious consequences All gas appliances and other gas fittings must be installed with due regard to the manufacturer s installation instructions the Gas Safety Installation and Use Regulations 1998 and the relevant requirements of the Building Regulations and British Standards BOAGAZ Design and Installation Manual Issue UK Version 1 2010 04 23 N A BOAGAZ s BOA AG WE Expansion Joints AN Metal Hoses Metal Bellows 2 Description of the BOAGAZ System and System Components The BOAGAZ CSSPT system provides the installer with both flexibility in terms of positioning gas supply piping the prospect of significantly reduced installation time and increased safety associated with using fewer joints and couplings The components of the BOAGAZ CSSPT system together with dimensions are detailed below 2 1 CSS tubing dimensions BOAGAZ CSSPT for conveying gas Material Tub
24. e event of a sleeve passing through an exterior wall the seal needs to be on the inside of the wall The sleeve should be such that the BOAGAZ tubing can be inserted satisfactorily into it and be of suffi cient diameter to enable effective sealing between the tubing and the sleeve Mechanical joints should not be located within a sleeve The outside of the sleeve shall be secured and sealed at each end to the structure of the building with a suitable building material e g cement mortar 5 4 Tubing in ducts 5 4 1 Installation in ventilated ducts Vertical or horizontal ducts containing BOAGAZ CSSPT are required to be ventilated in order that any minor gas leakage within the duct which is leakage that would not be detected by the normal gas tight ness testing methods does not cause the atmosphere within the duct to become unsafe Ventilation guidance is provided in Table 16 for different duct sizes Ducts with a small cross sectional area and volume less than 0 01m with a total volume less than 0 1m are considered to be sufficiently ventilated by adventitious openings Cross sectional area of duct Minimum free area of each opening 2 m m 0 01 and not exceeding 0 05 Cross sectional area of duct Exceeding 7 5 1 150 of the cross sectional area of the duct Table 16 Free area of ventilation openings 5 4 2 Installation in unventilated ducts BOAGAZ tubing must not be installed in an unventilated duct or void although tu
25. e nnne nnne nis 26 5129 S0id Wals cm c s 26 91S ELTON UDIN NN omm 29 5 14 Connection and disconnection of BOAGAZ CSSPT and fittings seeesseessssssssss 29 6 Prevention of corrosion or degradation of BOAGAZ CSSPT sasssnussnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnne 29 7 Gas tightness testing and purging 1 1 eleeeeeeiieeeeeieeeee sienne nennen nnn nnn nnn nnn n nnn nnn nnn nnns 30 eum WS TANT S T M 30 Iz ISIC NS NIC HS scu ag e pu card RU Eedv Nu Docet pU Onde uia b cum iaa E cfe DEMO LM T RR LOU DUMP omnncertaten 30 e uem PC 30 SB DamaGe ANG REDAN t t cc 30 8 1 Small visible damages to the cover else nennen nennen nennen nnn nnns nans nnn nnns 30 o2 Damage Ol TUDING ueniet pasan Sa EN E Re EMI Sein EE E MEER EN CSI DAS MM E 30 8 3 Connection to other SYStOMS cccccssceccessececeesececceeseeecseeeecseuseecseeeeessaueeecseaseeesegeeessgeeessageessseaes 32 BOAGAZ Design and Installation Manual Issue UK Version 1 2010 04 23 3 AC A BOA AG Expansion Joints TAN Metal Hoses Metal Bellows h BOAGAZ Tables Table 1 BOAGAZ CSSPT GIMENSIONS cccccsecccceeececeeeeeseeeeeseeeeeeeeesaeecesseeeeseecesseeessaeesseeesaeeeeeeeeeeas 7 Table 2 Thread sizes and weights o
26. eeceeceseeeeeeeeeeeeeeeeeeseeeeeeeseeeesseeeeeeseaueeesseeeesseeeeeeesaees 22 5 10 BOAGAZ CSSPT in wooden joisted floors seeeessssssssseseseeeeeennenen nennen 22 5 10 1 Installation between floor joists or roof spaces ssssesesseeeeneeeeennnnn nnn 22 5 10 2 Installation across joists in ceiling or roof spaces sessseeeeeeeeneeeen 23 5 10 3 Installation in intermediate joisted floors sseeeseseeeseseeeeeeeennnenennn nnn 23 5 11 BOAGAZ tubing laid in concrete floors seeeessssesssseeseeeeeeennnnnnmnnnnnn nennen 24 ONMNNIECI II MENIETRTEPMR I 24 0 11 2 Movement and SettleMent cc cccccecccceeeeeceeeeeeeeeeeeeeeeaeeeeseaeeeeeeesseeesaneeesaueesseseessneeesnseesanees 24 5 11 3 BOAGAZ CSSPT passing through solid floors cccceecccecseeeeeceeeeeeeseeeeeeeaeeeesaeeeeeesaeeeesaaees 24 5 11 4 BOAGAZ fittings C eee ere 24 5 12 BOAGAZ CSSPT in Walls nccccskvsnsscasqmaces vnssscusaensdctpa de CousuP vau sucus onE deba nba noU p sbsecqU EM SML dua Ed 26 9 121 TUDING gt gee eee eee rint Rubus eee cius dr er ND FIM RR UM NU nr eee ee eee eer 26 5 12 2 Cavity e 26 95 12 39 Dry UI RU c 26 5 12 4 Timber construction walls 1leeeeeeeeeeeeeeeeeeeeeeeee enne nnn
27. f BOAGAZ male fittings 0 00 0 ce cccceeeeceesseeeeesaeeeeeeeeeeseeeeeeseeeeeeeas 8 Table 3 Thread sizes and weights of BOAGAZ female fittings cccceccccseeeeeeeeeeeeesaeeeeeeaeeeeesaeeeeesaees 8 Table 4 Size and weights of BOAGAZ couplings sees enne 9 Table 5 Mechanical tee sizes and weights sssessesssssssssssseseseee nennen nennen nennen nn nna nnns 9 Table 6 Pipe support dimensions cccceccceccceeeceeeceeceececeneceeceuecsueceueeseeseecaeeteeetaeeteeeteneteeeseeeeaeees 10 Table 7 BOAGAZ Spool with Caddy cccccccccccsseeceeeeeeeeeeseeeeeeeeeeeesseeeeeeseeeeeseeseeesseeeeeseeeeeesseeeseessneees 10 Tabes BOAGAZO TDI CUNG accan aaiae E ome 10 Table S BOAGAZ Siipper KNE srce a a r EE FED RETE s 10 Table 10 Discharge in a straight horizontal BOAGAZ CSSPT with a 1mbar differential pressure between the ends for gas of specific gravity 0 6 air 1 11 Table 11 Equivalent tubing lengths for fittings and bends for 1 mbar differential pressure 11 Table 12 Appliances gas rates esssesssssssseeseeeeeeen nennen nennen nnnn nanus r aie ranas e sa anser asa aranea 12 Table 13 Tube sizing Ni TU T T 13 Table 14 Recommended installed bend radii ISO 10380 EN 15266 eeeeeeseeeeeeeeeeee 16 Table 15 Maximum tightening torques for BOAGAZ fittings sees 16 Table 1
28. for buildings of not more than three storeys BOAGAZ tubing within sleeves must not adversely affect the fire resistance of the building 1 Ventilation 9 Ground level 2 Appliance 10 Gas service 3 Fire stop ECV Emergency control valve 4 Flat 3 AECV Additional emergency control valve 5 Flat 2 IIV Inlet isolation valve 6 Flat 1 M Gas meter 7 Meter room TP Test point 8 Meter room ventilation Figure 2 Elements of a typical installation in multi storey buildings containing flats or maisonettes installation via a ventilated duct BOAGAZ Design and Installation Manual Issue UK Version 1 2010 04 23 14 FS h BOAGAZ 2 5 Pf Expansion Joints AN Metal Hoses Metal Bellows 1 Appliance 9 Gas service 2 Fire stop 10 Vent 3 Flat 3 11 Enclosure 4 Flat 2 ECV Emergency control valve o Flat 1 AECV Additional emergency control valve 6 Meter room IIV Inlet isolation valve 7 Meter room ventilation M Gas meter 8 Ground level TP Test point Figure 3 Elements of typical installation tubing in multi storey buildings containing flats or maisonettes installation via a ventilated enclosed area BOAGAZ Design and Installation Manual Issue UK Version 1 2010 04 23 15 eS Vlg TAN xpansion Joints M Metal Hoses Metal Bellows 5 Installation Practice Best practice see
29. he proper length Cut the BOAGAZ tubing through the plastic cover and stainless steel to length with the BOAGAZ tubing cutter The cut must be centred between two corruga tions Swivel the cutter in one direction and tighten roller pressure slowly after each rotation Attention Overtighten ing may cause irregular cuts and de formation of the tubing Step 2 Remove the cover with the BOAGAZ stripper knife so that 4 corrugations are exposed to allow assembly of the fit tings Caution The stripper knife has a sharp blade please handle with care BOAGAZ Design and Installation Manual Issue UK Version 1 2010 04 23 X S92 BOA AG BOAGAZ WE Expansion Joints TAN Metal Hose Metal Bellows S Y Slide nut over tubing and position the 2 Slide nut over retainer ring and hand tighten nut posed at the end of the tubing Attention Respect the maximum tightening torques Figure 6 BOAGAZ CSSPT cutting and fitting connections 5 7 BOAGAZ Supports and support spacing The BOAGAZ tubes must not be hung from other pipework and nothing must be supported from BOA GAZ tubing It should be installed so that condensation or leaks from other pipes can not drip onto the BOAGAZ tubing BOAGAZ corrugated tubing can be installed in screed or plaster without cavities or in ducts and chan nels with adequate ventilation in accordance with BS6891 2005 Support points must be strong enough to suppor
30. ing Stainless Steel 1 4404 Cover PE red kd pel tol ea pa hd xA S F F Table 1 BOAGAZ CSSPT dimensions 2 2 BOAGAZ Male mechanical joints Male mechanical joint fittings connect the BOA GAZ CSSPT to a manifold or gas outlet with female thread Material Body Nut Retainer Brass CW603N or CW612N Gasket Elastomer EN 549 BOAGAZ Design and Installation Manual Issue UK Version 1 2010 04 23 T BOAGAZ on ac Cie Expansion Joints HIN Metal ieee Metal Bellows Dimensions Item n Weight in kg DN 15xR M 0032963 DN 20xR M 0036632 DN 20 x R 3 4 M 0032964 Table 2 Thread sizes and weights of BOA GAZ male fittings 2 3 BOAGAZ Female mechanical joints Female mechanical joint fittings connect the BOAGAZ CSSPT to valves or fittings with taper male threads Material Body Nut Retainer Brass CW603N or CW612N Gasket Elastomer EN 549 Dimensions Dimension x taper female thread Weight EN10226 1 in kg Table 3 Thread sizes and weights of BOA GAZ female fittings 2 4 BOAGAZ Couplings Mechanical couplings join BOA GAZ CSSPT of the same size Material Body Nut Retainer Brass CW 603N or CW612N Gasket Elastomer EN 549 e 4 EN i A 75 7 1 NU X t asi L4 t r l wey PES l heres Ado A BOAGAZ Design and Installation Manual Issue UK Version 1 2010 04 23 h BOAGAZ 4 Se Expansion Joints PN Metal Holes Metal Bell
31. laced faster and more economically than repairing the damaged section This is the pre ferred method because extra fittings are not required Repair the damaged section The damaged tubing can be repaired by each of the following two methods BOAGAZ Design and Installation Manual Issue UK Version 1 2010 04 23 30 n BOAGAZ Eq Face Expansion Joints HIN Metal idan Metal Bellows Method 1 Remove the section of tubing which is damaged and reconnect the new ends with a sin gle mechanical coupling Use this repair method if the damaged section is between 2 corrugations and if there is enough excess tubing in the run to make up for the removed damaged length m m 1 Pin hole in BOAGAZ CSSPT 2 Cut out damaged section 3 Re connect with BOAGAZ coupling as per Instructions Figure 17 Repair of minor damage Method 2 Remove the section of tubing which is damaged and splice in a new section of tubing with two mechanical couplings Use this repair method if the extent of the damage covers more than a small area and there is not enough slack in the existing tubing run to make up the damaged length 1 Major damage to BOAGAZ CSSPT 2 Cut out damaged section 3 Splice in new tube section with two BOAGAZ coupling as per Instructions Figure 18 Repair of major damage BOAGAZ Design and Installation Manual Issue UK Version 1 2010 04 23 31 BOAGAZ 394 BOA AG Expansion Joints AN Metal Hoses Me
32. lating pressure drop using the data in Table 10 the length of tubing and also the number of tees and elbows needs to be taken into account Table 11 For the example given each element is considered to be straight and horizontal Between elements D and F the length of this section is 1 25m and needs to carry gas at a rate of 1 5m h It should have a pressure drop of no more than 0 25mbar A pressure loss of 0 25mbar in a length of tubing 1 25m is equal to one of 4x0 25 1mbar in a length of 4x1 25m 5m In Table 10 the row corresponding to a length of 5m and aiming for a discharge rate of 1 5m h DN15 gives 1 8m h and DN20 gives 3 6m h In other words the DN15 tubing gives sufficient flow rate of gas and DN20 diameter tubing is not required unless further appliances will be added or upgraded in future 1 Gas fire H 2 Cooker G 2m m 4 29 3 Water heater 4 Warm air unit Figure 1 Example of a tube sizing calculation Appliance Gas Rate ieu Key in figure 1 iS flow m h Warmairunit 10 3 314 Multipointwaterheater 25 J 3 5 0 Cooker J A 231 10 3 P Gasfie 305 J A1 V Central heating boiler 15 a Combination boiler 25 X wma 4B O Table 12 Appliances gas rates BOAGAZ Design and Installation Manual Issue UK Version 1 2010 04 23 12 h BOAGAZ 4 BOA AG NE Expan
33. n Manual Issue UK Version 1 2010 04 23 10 om h BOAGAZ V BOA AG E TAN Metal Hose Metu Bellows 3 Planning and sizing 3 1 General When designing an installation the sizes of all installation piping shall be determined from the maximum gas rate of the appliances to be connected Allowance can be made for the possibility of future extensions especially if the piping is to be buried For natural gas the pressure at the meter outlet should be 21 mbar and the pressure drop between the outlet of the meter and the points to be connected shall not exceed 1 mbar at maximum flow conditions Low pressure 3rd family gas supplies should be regulated at 28 mbar butane or 37 mbar propane with a pressure drop not exceeding 2 5 mbar See below for the natural gas discharge rates through straight horizontal BOAGAZ CSSPT with a 1mbar differential pressure between the ends Discharge rates for straight horizontal BOAGAZ CSSPT Medium Natural gas Pressure drop 1 mbar Inlet pressure 21 mbar Specific gravity 0 6 TJ 0 L8 58 198 E335 31 58 1309 Lm o 319 32 61 L 4 05 14 22 44 L 8 12 29 38 L 90 14 28 Table 10 Discharge in a straight horizontal BOA GAZ CSSPT with a 1mbar differential pressure be tween the ends for gas of specific gravity 0 6 air 1 3 1 1 Equivalent tubing lengths EIER ped vv PP Diverted Two direc COU
34. ng sesssssessessssseseneeennn eene nnne nnn nennen nennen nnn 18 Figure 5 Main equipotential bonding connection detail sseeseeessseeeeeseeeeeneeen 19 Figure 6 BOAGAZ CSSPT cutting and fitting connections ee cccceeceecaeeeeeeeeeeeeesaeeeeesaaeeeeseeeeesaees 20 Figure 7 Supports and Support Spacing sssesssssssssssssssseseeeeee nennen nenne snae nnns nasa nsn 20 Figure 8 Quick installation of the BOAGAZ BISMAT Flash tubing clamps 21 Figure 9 Limits for notches and drilling of solid timber floors sseeseeeeeseeeeeeeeenn 23 Figure 10 Ground bearing concrete floors essssssssssssessseese nennen menn nnne nnns nnn nnn nnn 24 Figure 11 Suspended concrete floor cccccccccssseeeceeseeeceeesececseseeecseueesesageeessageeeeseeeeessageeessagseessseseeeass 25 Figures Gro qe ANS PROPRE RTT 25 Figure 13 Brick and block plastered Wall cccccccecseeeeceeeeeseeeeeseeeeeseeeesaeeeeseaeeeseeeeeseneesaaeeesseeeeesneeesneeess 27 Figure 14 Brick and block with dry lining on dabs sesseeseeeseseeeeenenee nene 27 Figure 15 Brick and block dry lined on battens ee cccceeeeeceeeeeeeeeeeeeeeeseaeeeseeeeseeeeseeeeesaeeesaeeeeseeeeees 28 Figure 16 Timber frame construction cccccccccecseeeeeeeeeeeeeeeeeeeseeeeeeeeeeeesaeeeesseeeeeseeeeee
35. oncrete floor Figure 11 a concrete raft Figure 12 After the BOAGAZ tubing is laid and prior to pouring screed the entire run of BOAGAZ tubing must be examined visually and manually The installer must closely inspect the cover in order to check whether damage to the coating has taken place as this could prejudice corrosion resistance Repair any cover damage by wrapping with tape 5 11 2 Movement and settlement BOAGAZ tubing laid in concrete floors shall be protected against failure caused by movement BOA GAZ tubing buried in concrete floors shall be suitably sleeved and protected against failure by seismic movement and settlement Protection against failure can be afforded by laying BOAGAZ tubing sleeved on top of base concrete and subsequently covering it with screed see Figure 10 to a minimum depth of 25mm 5 11 3 BOAGAZ CSSPT passing through solid floors Tubing passing vertically through solid floors shall take the shortest practicable route and shall be sleeved see 5 3 5 11 4 BOAGAZP fittings No BOAGAZ fittings shall be buried in the structure or below ground Boxes with removable plywood covers and suitable for accessing BOAGAZ fittings within floor screed are available from specialised building suppliers described as Conduit junction boxes ANAYA 4 Y 5 p 1 BOAGAZ tubing laid in preformed duct 4 Screed 2 Corrosion protected BOAGAZ tubing laid 5 Concrete slab in scree
36. ows in kg DN 15 DN 20 74 DN 32 1 4 Table 4 Size and weights of BOAGAZ couplings 2 5 BOAGAZ Mechanical Tees Mechanical Tees join BOAGAZ CSSPT of same or different sizes Material Body Nut Retainer Brass CW603N or CW612N Gasket Elastomer EN 549 oizes of Tees Item n Weight Dimensions AX BxC in kg DN20xDNi5xDNi5 mooste oso Table 5 Mechanical tee sizes and weights 2 6 Pipe Supports with quick locking system For the quick and reliable fix of the BOA GAZ CSSPT BOAGAZ Design and Installation Manual Issue UK Version 1 2010 04 23 X BOAGAZ 392 BOA AG WE Expansion Joints TAN Metal Hosen Metal Bellows y W N mm M8 10 20 23 20 x 1 25 M8 10 25 28 20 x 1 25 M8 10 32 35 20 x 1 25 M8 10 40 43 1 32 74 68 42 20x125 Table 6 Pipe support dimensions 2 7 Spool with Caddy Helps to transport and to unroll the BOA GAZ CSSPT from the spool PLT Plastic spool M 0032970 Caddy for PLT spool M 0032969 Table 7 BOAGAZ Spool with caddy 2 8 Tubing cutter Special tool to cut BOAGAZ CSSPT Description Size BOAGAZ Cutter for DN15 DN20 M 0029999 BOAGAZ Cutter for DN20 DN32 M 0030000 Table 8 BOAGAZ Tubing cutter 2 9 Stripper knife Designed to remove the PE cover from the BOA GAZ CSSPT E le i E otripper knife DN15 DN32 M 0030006 Table 9 BOAGAZ Stripper knife BOAGAZ Design and Installatio
37. r not permanent equipotential bonding has been established The recommended disconnection procedure is as follows a Isolate the electrical connection of associated gas appliances from the main supply b Clip or clamp a temporary continuity bond to each side of the union fittings or complete section that is to be removed or connected ensuring that sound metallic contact is made C Leave the bond in position until after the work is completed and metallic continuity re established A recommended temporary continuity bond comprises of at least 1 2 m of single core insulated flexible cable or equivalent of at least 250 V rating The cable should have a cross sectional area of not less than 10 mm and multi strand flexible construction BS 6007 or BS 6231 with a robust clip or clamp firmly at tached at each end Where the meter is removed BS 6400 should be consulted 6 Prevention of corrosion or degradation of BOAGAZ CSSPT BOAGAZ system components shall not be exposed to any acids bases salts or other caustic materials Some chemical compounds have been identified that may aggressively corrode 1 4404 stainless steel Contact with these chemicals should be absolutely avoided Any contact should be immediately and thor oughly washed off The plastic covering is not affected by these compounds and will protect the tubing as long as it is undamaged Chemicals to avoid include the following Hydrochloric Acid common name muriatic or brick
38. sion Joints TAN Metal Hoses Metal Bellows VG x Pipe Pipe Equivalent length Equivalent length fitting Total Tube section SEE rale length length diameter m h S type and equivalent ls pey length m mnn two E one tee 1 64 15 Peete ee iol one bend 0 15 one tee 0 64 EIEREGE SEE NEAN one bend 0 15 ECH DOLILISS GE mln one bend one tee a Most appliances have horizontal connections so in practice an additional bend is re quired at each point b Note that losses through tees have to be considered in each branch Table 13 Tube sizing results 4 Safety precautions 4 1 General In advance of the installation process a risk assessment should be conducted to ensure the level of risk during tubing installation is minimised as far as is reasonably practicable For example installers need to consider the risk of persons restoring the gas supply at the primary meter should they leave the general location where the work is in progress While installation work is in progress care shall be taken to prevent the ingress of dirt water etc into installation tubes Such ingress could adversely affect the flow characteristics within the tubing and even block flow altogether i e appliance orifice Where work is in progress on tubing already connected to a meter either a the meter shall be disconnected temporarily and both the open ends of the tubing sealed and dust caps fitted to the meter or b all open ends of the
39. ssaeeeessneeeeesaeeeeeeas 28 Figure 17 Repair of minor CAMAGE cccccceeecceceeeeeeseeeeeeeeaeeeeeseeeeeeseeeeeeeeeeeeeseeeeesaaeeessegeeesaeeeeeeesaeseeeeas 31 Figure 18 Repair of major damage sssssssssssssssesseseeenn enne nnne nnne nnn nnns nnns na rne snae enn nn nnn 31 Figure 19 Connection to other gas piping systems or fittings ssseeessseseseeereeene 32 BOAGAZ Design and Installation Manual Issue UK Version 1 2010 04 23 4 eS Vlg h BOAGAZ OF aun TAN Expansion Joints Metal Hoses Metal Bellows M 1 Scope of Design and Installation Guide The BOAGAZ stainless steel corrugated pliable tubing CSSPT system can be used for installa tions of natural gas and LPG The system is approved under the BS Kitemark number KM 539844 The approval was made in accordance with BS EN 15266 2007 Stainless steel pliable corrugated tubing kits in buildings for gas with an operating pressure up to 0 5bar The BOAGAZ stainless steel pliable corrugated pliable tubing CSSPT system can be used for domestic and industrial and commercial I amp C applications 1 1 Supporting Documents BS EN 15266 2007 Stainless steel pliable corrugated tubing kits in buildings for gas with an operat ing pressure up to 0 5 bar BS 5482 Code of practice for domestic butane and propane gas burning installations Part 1 Instal lations at permanent dwellings residential park homes and commercial
40. t the weight of the tubing fittings and clamps The following support spacing is recommended Non flammable pipe sleeve Filled with mineral wool rated gt 1000C If required seal against moisture with fire rated silicon Fix with steel rawplugs S Plastic rawplugs K may be used of at least M8 for vertical installations A Horizontal installation fixed B Vertical installation fixed to building fabric to building fabric Figure 7 Supports and Support Spacing BOAGAZ Design and Installation Manual Issue UK Version 1 2010 04 23 20 BOAGAZ BOA AG Expansion Joints N Metal Hoses Metal Bellows Dimension DN Support Spacing m DN15 DN20 DN25 DN32 Table 17 Recommended Support Spacing 5 8 Supports The BOAGAZ tubing shall only be fixed with the BOAGAZ BISMAT Flash pipe clamps which are part of the approved CSSPT system The BOAGAZP BISMAT Flash is a single screw clamp with quick locking system The locking screw can be secured by one single thumb push Tools are not required Insert tubing close clamp push screw Figure 8 Quick installation of the BOAGAZ BISMAT Flash tubing clamps The BOAGAZ BISMAT Flash is suitable for fixing all BOAGAZ tubing from DN15 to DN32 The steel locking mechanism guarantees safety and reliability in all conditions The fire resistance proper ties of the BOAGAZ BISMAT Flash are tested by the Material Pr fungs Anstalt Braunschweig Ger many
41. tal Bellows W 8 3 Connection to other systems BOAGAZ tubing may only be connected to other piping materials using approved screwed fittings Cop per pipe systems must be thoroughly cleaned and free from any solder flux residues before connecting BOAGAZ tubing GT copper tube steel tube uU black zinc plated HC stainless steel tube with pressfitting PO stainless steel tube foreign system BOAGAZ System with screw fitting Figure 19 Connection to other gas piping systems or fittings BOA Flexible Solutions Expansion Joints Metal Hoses Metal Bellows www boagaz co uk info boagaz co uk BOAGAZ Design and Installation Manual Issue UK Version 1 2010 04 23 32
Download Pdf Manuals
Related Search