DWFXTM Installation Guide.qxd - Actionair

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DWFX TM Installation GuideContents1 General 32 Health and Safety 33 Equipment 34 Materials 35 Measure the damper body overall size 36 Determine the finished hole size 37 Determine the hole to cut size 38 Example of hole to cut dimension calculation 39 Mark out the hole to be cut on the surface of the wall 310 Drill the four corners to project the rectangle on to the far side of the wall 311 Cut the top and bottom edges of the hole 312 Cut the vertical (side) edges of the hole 413 Remove the cut material to leave the hole 414 Tidy up all the edges of the hole 415 Frame out top and bottom edges of the hole 516 Frame out the sides of the hole 517 Finish the installation of the track and stud 618 Line the hole with board 619 Finish the hole 620 Drill clearance holes in the damper flange 721 Install the damper 722 Backfill with mineral fibre 723 Finish off with patress 7Appendix A 8A typical dry stud partition wall construction, as used in a damper test 81 General 82 Fixed Track and Stud 83 Additional construction studs 84 Board sections 85 Insulation 86 Finishing 87 Joints made good 82 www.actionair.co.uk
DWFX TM Installation Guide1 GeneralThis method of installation should only be employed with anActionair damper that has the DWFX-F TMinstallation system2 Health and SafetyThis process must be undertaken by competent persons. Morethan one person may be required to ensure the safe handling oflarge dampers and sections of wall. Use must be made of accessequipment to ensure unsafe practices are not used to approachwalls or difficult access areas. Standard site PPE should be used(minimum steel toe cap boots, hard hat), together with anyprotective eyewear and masks, when drilling or cutting is beingundertaken. The latter should also be used when handing the wallconstruction materials, as defined by the material suppliers. Ifloud equipment is being used, hearing protection should be used.All waste materials should be collected and disposed of asdefined by the relevant supplier.3 EquipmentTape measure, pencil, straight edge, square, jigsaw (with fineblade), drill, screwdriver, tin snips, stanley knife, hammer/softmallet, rasp/surform, float9 Mark out the hole to be cut on the surface of the wallMark out the hole to be cut on one surface of the wall, using thecentre of the duct run as a datum. Check the diagonals of themarked out rectangle to ensure that it is square. It is advisable thatvertical edges do not coincide with a stud as this may be hard to cut4 MaterialsPlasterboard grabber screws, various lengths to suit, plasterboardthat was used in wall construction, plasterboard joint filler andfinish5 Measure the damper body overall sizeThis measurement should include the main damper frame andnot the peripheral flange. Care should be taken to include theshroud that the PTC interface will be pushed into, where this isfitted.6 Determine the finished hole sizeAdd 25mm ± 5mm to both the width and height dimensionmeasured above. This addition gives the hole into which thedamper will be placed and leaves an approximate gap all aroundthe damper and between the shroud casing and the hole ofapproximately 12.5mm7 Determine the hole to cut sizeThe hole that is to be cut into the wall has to be lined with onelayer of the board that was used in the building the wall to fullyprotect the wall construction. Add two thicknesses of board toeach of the finished hole width and height dimensions determinedabove.10 Drill the four corners to project the rectangle on to the farside of the wall.Drill through the wall at the four corners. The four resulting holesshould then be connected to mark out the hole on the oppositeside of the wall. Again the diagonals should be checked to confirmsquareness.8 Example of hole to cut dimension calculatione.g. Smoke/Shield Damper Nominal size 1000 x 1000Measure casing width ➱ 1045Add shroud dimension ➱ 30Add gap dimension ➱ 25Add 2 x typ. board thickness ➱ 25Gives hole to cut width = 1125Measure casing height ➱ 1070Add gap dimension ➱ 25Add 2 x typ. board thickness ➱ 25Gives hole to cut height = 112011 Cut the top and bottom edges of the holeIt is important to cut the horizontal (top and bottom) edges of thehole first, as this keeps the verticals rigid, whilst any studs are cutthrough. Do one side of the wall and then the other. Use a finejigsaw blade when cutting through any studs, to prevent “snagging”.www.actionair.co.uk3
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