1、Designation: F2647 07 (Reapproved 2016) An American National StandardStandard Guide forApproved Methods of Installing a CVS (Central VacuumSystem)1This standard is issued under the fixed designation F2647; the number immediately following the designation indicates the year oforiginal adoption or, in
2、 the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. Asuperscript epsilon () indicates an editorial change since the last revision or reapproval.1. Scope1.1 This guide demonstrates proper methods for installing acentral-vacuum system.1.2 Ap
3、pendix X1 contains additional sources of informationthat may be helpful to the user of this guide.1.3 The values stated in inch-pound units are to be regardedas the standard. The values given in parentheses are forinformation only.1.4 This standard does not purport to address all of thesafety concer
4、ns, if any, associated with its use. It is theresponsibility of the user of this standard to establish appro-priate safety and health practices and determine the applica-bility of regulatory limitations prior to use.2. Referenced Documents2.1 ASTM Standards:2E814 Test Method for Fire Tests of Penetr
5、ation FirestopSystemsE2174 Practice for On-Site Inspection of Installed FirestopsF402 Practice for Safe Handling of Solvent Cements,Primers, and Cleaners Used for Joining ThermoplasticPipe and FittingsF412 Terminology Relating to Plastic Piping SystemsF2158 Specification for Residential Central-Vacu
6、um Tubeand Fittings3. Terminology3.1 Definitions:3.2 For definitions of terms used in this guide, see Termi-nology F412.4. Significance and Use4.1 The suggestions of this guide are intended to provideproper installation materials and practices to be used during theinstallation of a central-vacuum sy
7、stem.5. Materials5.1 Plastic MaterialsFor information on plastic materialsused for installing a CVS system, see Specification F2158.1This guide is under the jurisdiction of ASTM Committee F11 on VacuumCleaners and is the direct responsibility of Subcommittee F11.30 on Durability-Reliability.Current
8、edition approved Oct. 1, 2016. Published October 2016. Originallyapproved in 2007. Last previous edition approved in 2013 as F2647 07 (2013).DOI: 10.1520/F2647-07R16.2For referenced ASTM standards, visit the ASTM website, www.astm.org, orcontact ASTM Customer Service at serviceastm.org. For Annual B
9、ook of ASTMStandards volume information, refer to the standards Document Summary page onthe ASTM website.Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States1APPENDIXES(Nonmandatory Information)X1. STORAGEX1.1 Outside StoragePlastic tube s
10、hould be stored on aflat surface or supported in a manner that will prevent saggingor bending. Do not store tube in direct sunlight for longperiods. To prevent damage, tubing and fittings should not bestored where the temperature exceeds 130F (54C).X1.2 Inventories of plastic tube should be used on
11、a first-in,first-out basis.X2. JOINTS AND CONNECTIONSX2.1 PVC tubing and fittings shall be joined by the solvent-cement method.X2.2 Metal tubing and fittings shall be joined according toAppendix X4.X3. SOLVENT CEMENT JOINTSX3.1 Tube CuttingCut the tube square with the axis, usinga fine-tooth handsaw
12、 and a miter box. A rotary cutter may beused if the cutting blades are specifically designed for cuttingplastic tube in such a way as not to raise a burr or ridge (flare)at the cut end (see Fig. X3.1). Remove all burrs with adeburring tool, knife, file, or abrasive paper.X3.2 Dry Fit TestThe solvent
13、 cement joint is designed sothat there will generally be interference of the tube wall withthe fitting socket before the tube is fully inserted. Insert thetube into the fitting and check that the interference occurs about13 to23 of the socket depth (Fig. X3.2).X3.3 CleaningSurfaces to be joined must
14、 be cleaned andbe free of dirt, moisture, oil, and other foreign material. If thiscannot be accomplished by wiping with a clean, dry cloth, achemical or mechanical cleaner must be used. If a chemicalcleaner is used, apply with an applicator. (WarningSkincontact with chemical cleaners should be avoid
15、ed.)X3.4 Application Procedure:X3.4.1 Handling CementKeep the cement can closed andin a shady place when not actually in use. Discard the cementwhen an appreciable change in viscosity takes place or at thefirst sign of gelation. The cement should not be thinned. Keepthe applicator immersed in cement
16、 between applications. (SeePractice F402 for proper handling procedures.)X3.4.2 Application of CementPVC solvent cement is fastdrying, and, therefore, the cement shall be applied as quickly aspossible, consistent with good workmanship (see Fig. X3.3).The surface temperature of the mating surfaces sh
17、ould notexceed 110F (43C) at the time of assembly.X3.4.3 Apply cement lightly but uniformly to the outside ofthe tubing, taking care to keep the use of cement to a minimum.(WarningApplication of cement to fitting socket is notrecommended and can cause drippings or an excess amount ofFIG. X3.1 Appara
18、tus for Cutting TubeFIG. X3.2 Tube Entering Dry FittingF2647 07 (2016)2cement to be pushed to the inside diameter of the connectionthat can possibly snag debris and eventually create a clog.)X3.4.4 Low-Temperature ApplicationsAt temperaturesbelow freezing, 32F (0C), solvents penetrate and soften the
19、PVC surfaces more slowly than in warmer weather. For thisreason, it is recommended that testing be done on a piece ofscrap tube to determine if satisfactory penetration of thesurfaces can be achieved.X3.4.5 Assembly of JointImmediately after applying acoat of cement to the tube, forcibly insert the
20、tube into thesocket. To distribute the cement evenly, turn the tube or fittinga14 turn during the process (see Fig. X3.4).X3.4.6 Assembly should be completed within 20 s after theapplication of cement. (WarningUntil the cement is set inthe joint, the tube may back out of the fitting socket, if not h
21、eldin place for approximately 1 min after assembly. Care shouldbe taken during assembly not to disturb or apply any force tothe joints previously made, as early rough handling can destroyfresh joints.)X4. METHODS OF JOINING METAL TUBING AND FITTINGSX4.1 Tube CuttingCut the tube square with the axis,
22、 usinga metal cutting blade in a chop saw or band saw.Arotary cuttermay be used if the cutting blades are specifically designed forcutting metal tube in such a way as not to raise a burr or ridge(flare) at the cut end. Remove all burrs with a deburring tool,file or abrasive paper.X4.2 CleaningSurfac
23、es to be joined must be cleaned andfree of dirt, moisture, oil and other foreign material. If thiscannot be accomplished by wiping with a clean, dry cloth, achemical or mechanical cleaner must be used. If a chemicalcleaner is used, apply with an applicator. (WarningSkincontact with chemical cleaners
24、 should be avoided.)X4.3 Assembly of JointThere are three popular and rec-ommended methods of joining metal tubing and fittings for usein low vacuum and pressure systems under 16 psig (Adhesive,Compression Couplings and Shrink Sleeves). All of thesemethods provide secure connections eliminating the
25、need forwelding or brazing.X4.3.1 AdhesiveThe best proven adhesive to bond metaltubing and fittings together is industrial contact cement. Forbest results, apply coatings of equal thickness on each cleansurface to be joined. Do not join immediately. When bothsurfaces are tacky to touch, insert the t
26、ubing the full depth intothe fitting socket. Make sure excess adhesive has not beenpushed to the inside diameter of the tubing (if any has be sureto remove it to prevent any future obstruction areas).X4.3.2 Compression CouplingsA mechanically fastenedcoupling that connects straight end tubing or fit
27、tings within theID of the coupling. These couplings offer an easy “tear down”or “repair” function (see Fig. X4.1 and Fig. X4.2).X4.3.3 Shrink SleeveA heat shrinkable polyolefin bandliterally shrinks and encircles the connection giving it mechani-cal strength and a positive seal. This joining method
28、can beused in conjunction with slip couplings, expanded tubing orfittings. Depending on weather conditions, shrink sleevestypically can be installed in as little as 1-2 min each (see Fig.X4.3).X4.3.3.1 Equipment Needed to Apply Shrink Sleeve:(1) A propane or butane torch, having a broad 12 in. or 15
29、in. soft billowy orange flame.(2) Or a commercial heat gun with 500F (14 amp)capability.X4.3.3.2 Applying Shrink Sleeve:FIG. X3.3 Uniform Application of Cement to Outside of TubeFIG. X3.4 Assembly of JointFIG. X4.1 Compression CouplingF2647 07 (2016)3(1) Slip shrink sleeve over the clean tube before
30、 joiningfittings together, join fittings and center shrink sleeve over jointarea.(2) Apply heat, starting in center over joint and worktowards the endsapplying heat as uniformly as possiblearound the circumference of the sleeve.(3) Operation is complete when the sleeve is in 360contact with the tube
31、 and a small amount of molten adhesive isvisible at both ends of the sleeve.(4) The joined connection may be moved when the sleeveand joint area are cool enough to hold with bare hands.(5) For repair, simply cut the sleeve with a knife or razorblade and remove.X4.4 Tubing SupportAll horizontal runs
32、of the systemmust be securely supported and fastened with tube hangers.Hangers should be spaced on 10 ft centers. All vertical tubingmust be firmly held in place.X5. SYSTEM INSTALLATIONX5.1 To determine the location of hose inlet-valves, identifylocations that will provide the maximum area of cleani
33、ngcoverage, usually on inside walls in hallways, near doorways,archways, and at the bottom of stairways. (WarningInstallation of a tubing system will vary depending on thearchitecture of the building; however, some features are com-mon and are addressed. Other features are referenced in theManufactu
34、rers installation instructions.) Support for the tub-ing to be not less than every 4 ft (122 cm).X5.1.1 After locating the hose inlet-valve (unless the hose isshorter), use a 30-ft (9.1-m) length of cord or string to ensurethat the maximum area of cleaning coverage is accessible.Drawings or plans ma
35、y be used as well as the actual building.Floor plans are normally14 in. (1.50 cm) scale. A 7-in. (180-mm) piece of string or beaded chain will help determine theoptimum location. Keep in mind that furniture, doors, andother obstacles will prevent hoses from reaching the maximum30 ft (9.1 m), so hose
36、 inlet-valve placement and quantity isimportant to ensure that all areas to be cleaned can be reachedby the hose.X5.1.2 Check the tubing path to avoid possible obstructions,such as heating ducts. Installation is best accomplished byrunning a trunk line leading from the farthest hose inlet- valveto t
37、he power unit with branch lines running to the individualhose inlet-valves. Lines may be installed in partitions, attics,and crawl spaces, under or between floor joists, or on faces ofwalls or columns. It is always best to keep trunk lines andbranch lines as straight as possible without unnecessary
38、bendsand turns.X5.2 Recommended Tools:X5.2.112-in. (1.3-cm) right angle drill or12-in. (1.3-cm)drill,X5.2.2 214 to 2916-in. (5.7 to 6.5-cm) hole saw or cutter,X5.2.314 in. (6.4 mm) masonry drill bit,X5.2.4 Common hacksaw or small handsaw with 18 teeth/in. blade or 2 in. PVC tube cutter,X5.2.5 Miter
39、box,X5.2.6 Steel measuring tape,X5.2.7 Screw driver (Philips),X5.2.8 Screw driver (slot),X5.2.9 Wire connectors for #20 AWG (min) wire,X5.2.10 Side cutters,X5.2.11 Hammer,X5.2.12 Wire coat hanger,X5.2.13 Pocket or utility knife,X5.2.14 Flashlight,X5.2.15 Drywall saw or jig saw,X5.2.16 Deburring and
40、chamfering tool for PVC tubing,X5.2.17 Electrical tape,X5.2.18 Propane or butane torch,X5.2.19 Safety gloves, andX5.2.20 Wire snippers.X5.3 Installation of Hose Inlet Valves for an Existing Home(Finished Walls):FIG. X4.2 Improved Compression CouplingFIG. X4.3 Shrink SleeveF2647 07 (2016)4X5.3.1 The
41、hole in the wall for the hose inlet-valve shouldbe located between studs, clear of obstructions such asplumbing, wiring, and heat ducts.NOTE X5.1The minimum stud depth for sufficient clearance of anadapter elbow is 234 in. (70 mm).X5.3.2 Determine the exact location of the hose inlet-valveand select
42、 a point on the floor directly below vertical center ofthe desired location. Drill a small hole (against the wall)through the flooring and subflooring. The straight section of acoat hanger cut at an angle makes a good pilot hole drill bit.From beneath the floor, this pilot hole will serve as a guide
43、point from which you can measure over approximately 212 in.(63 mm) to locate and drill a minimum 214-in. (57-mm) up toa maximum 2916-in. (65-mm) diameter hole in the center ofthe plate. If it is a slab construction, additional planning will berequired to come down from the attic area.X5.3.3 Before c
44、utting the hole in the wall for the mountingbracket, drill the minimum 214-in. (57-mm) up to a maximum2916-in. (65-mm) diameter hole up through the plate and, usinga flashlight, inspect the interior of the wall to be sure there areno obstructions.X5.3.4 Having determined that there are no obstructio
45、ns inthe wall, cut a hole for the mounting bracket using a singleblade drywall saw or jig saw.NOTE X5.2Refer to the manufacturers installation manual for con-firmation of hole size required for mounting brackets and hose inlet-valves.X5.3.5 The end of the tubing is passed up through the holein the p
46、lates so as to be visible to the hose inlet-valve opening.NOTE X5.3At this point, follow the manufacturers instructions, asdifferent valves will have different methods of attachment and wiringinstructions.X5.4 Installation of Hose Inlet-Valves for a New Construc-tion (Unfinished Walls):X5.4.1 Determ
47、ine the exact location of the hose inlet-valveand mark location on nearest wall stud (usually same height aselectrical outlets).X5.4.2 Drill a minimum 214-in. (57-mm) up to a maximum2916-in. (65-mm) diameter hole in plate (bottom) centered2 in. from front face and 2 in. from side of stud (see Fig. X
48、5.1).If this is a slab construction you will come down from the atticand drill the minimum 214-in. (57-mm) up to a maximum 2916-in. (65-mm) diameter hole down through the plate to getinto the wall cavity.X5.4.3 Attach wall valve rough-in plate to stud at markedlocation.X5.4.4 Install pipe to connect
49、 rough-in plate to future trunkline using the hole drilled in the plate.X5.4.5 Attach low volt wire to rough-in plate by tying aknot at wire guide hole, then run wire along side of tubing backto future trunk line. (Check with local building code for specialrequirements on routing low voltage wire independently fromtubing.)X5.4.6 Install nail guards on plate to protect pipe from wallfasteners (see Fig. X5.2).X5.4.7 Repeat steps X5.4.1 X5.4.6 until all valve rough-inplates are connected to trunk line and accompanying low vol
