GSL LINEAR 2012_GSL LINEAR new doc2.qxd - Angus Air

SERIES GSLLinear Slot DiffuserPUBLICATIONDIFFUSERS 6APRIL 2012Curved LinearSlot DiffuserFeatures- One to Eight Slot Widths.- Adjustable for Horizontal& Vertical Distribution.- Unique Multi Purpose RemovableAir Deflection Vane.- Comprehensive Series ofMatching Plenums.- Alternative Border Options to SuitPopular Ceiling Designs.- Curved Patterns Available.- Extruded Aluminium Construction.

SERIES GSLLinear Slot DiffuserIntroductionGilberts GSL Series of Linear Slot Diffuser has beendesigned to meet the exacting performance requirementsand standards of modern slot diffuser applications.Combining up to date styling and design technology to blendwith modern architecture the GSL maintains excellent airdistribution characteristics providing smooth, accurate andflexible airflow control making the unit suitable for both fancoil, VAV and conventional Linear Slot applications.Available in standard one to eight slot widths the unit issuitable for sidewall or ceiling mounting applications and ismanufactured from extruded aluminium with a plastic airdeflection blade. Single units can be supplied up to 2.0m inlength with longer runs supplied in sections and joined,almost invisibly, by a simple, accurate and effectivealignment feature.The diffuser incorporates a discreet directional control vanein each slot to direct the airflow across the ceiling, left or right,or discharge vertically downwards. Arranged in standard2000mm lengths, the blade offers a clean unbrokenappearance and is easily clipped and unclipped from thediffuser to allow for fixing.Alternatively the control vane can be supplied in small100mm adjustable sections (Type GSLM). This allows forfurther close control of the supply air jets to provide a multidirectional array as shown on page 3.HORIZONTAL DISTRIBUTION - 1 wayAirflowHORIZONTAL DISTRIBUTION - 2 wayAirflowFeatures- One to Eight Slot Widths.- Adjustable for Horizontal & Vertical Distribution.- Unique Multi Purpose Removable Air Deflection Vane.- Comprehensive Series of Matching Plenums.- Alternative Border Options to Suit Popular Ceiling Designs.- Curved Patterns Available.- Extruded Aluminium Construction.VERTICAL DISTRIBUTIONThe standard border detail comprises a 27mm flangeborder with end flanges or end caps optionally available. Inkeeping with contemporary ceiling design, however, theGSL series is also available with alternative border stylesto match different popular ceiling types and mitred cornerscan also be included.In addition, the GSL is complemented by a comprehensiverange of purpose built Plenum boxes. Manufactured fromGalvanised or Zintec coated Mild Steel the boxes can besupplied to suit all diffusers in sectional box lengths up to2000mm. Connection between the boxes and the diffuserscan be accomplished either by drill and rivet through thediffuser neck or where access is limited, via concealedbracket fixings accessible through the diffuser face(standard fixing is concealed bracket). For even fasterinstallation a toggle latch fixing is optional and, forinstallations without Plenums. The diffuser includes fixingholes for drop rod support as standard.For volume control the standard Plenum inlet can be fittedwith Quadrant or Iris type dampers and where adjustmentvia the slot face is preferred, both cord and teleflexoperated spigot dampers can be installed.Standard finish on all GSL Slot Diffuser is a Whitepolyester powder coated face with all control vanes mattblack. Other colours and finishes are available on request.2

ALIGNMENT FEATUREFor long diffuser runs a concealed alignment feature isprovided for positive and accurate joining of diffuser lengthswhilst maintaining a clean unbroken appearance. Simplyalign the units on site using the dowels and then push the‘fir tree’ studs through the adjoining backstraps. A simple,straightforward and fast procedure.DIRECTIONAL CONTROLDirectional Control is achieved by adjustment of the controlvane housed in each slot, moved left or right for oppositehorizontal distribution and horizontal for vertical distribution.As standard airflow direction can be altered every 2000mmalthough smaller intervals can be easily achieved on site bysimply cutting the blade and inserting spacer brackets (seeinstallation leaflet for details). Alternatively the diffuser canalso be specified in multi-directional format (Type GSLM).On this model the blades are split every 100m and can beset in alternating positions to give a multi directionaldischarge (see below).DIRECTIONAL CONTROLMULTI-DIRECTIONAL(TYPE GSLM)AIRFLOWAIRFLOWHORIZONTALDISTRIBUTIONVERTICALDISTRIBUTIONMULTI-DIRECTIONALDISTRIBUTION3

SERIES GSLLinear Slot DiffuserSpecialBorderOption B(PlankCeiling)No of Slots A B1 86.5 53.52 129 963 171.5 138.54 214 1815 256.5 223.56 299 2667 341.5 308.58 384 351Specified Length + 64mmManufacturing Tolerance + 0/-1mmUNIT WITHEND FLANGES(mitred)Specified Length + 0/-1mmUNIT WITHOUTEND FLANGESPlasterCeiling(BorderOption AIllustrated)PLENUM OVERALL BCONCEALED BRACKET FIXINGADDITIONALBORDER FIXEDTO SIDES OFPLENUMNo of Slots Dim A Dim B Dim C1 78 53.5 67.52 120.5 96 1103 163 138.5 152.54 205.5 181 1955 248 223.5 237.56 290.5 266 2807 333 308.5 322.58 375.5 351 365CEILING CUT OUT DIMENSION COVER FLANGE DIMENSION ANote: Plaster ceiling Plenum arrangement and concealed bracket fixing compulsorySpecified Length + 55mmManufacturing Tolerance + 0/-1mmSpecified Length + 0/-1mm6

Curved SlotDiffuser(TYPEGLSC)The unique design of the GSL frame and directional controlblade allows for shaping of the diffuser into a variety ofcurved patterns whether for architectural or aestheticreasons. Importantly instead of being blanked or havingdummy sections however, the GSL curved diffuser can stillprovide full horizontal airflow adjustment with the directionalOpening Detailcontrol blade following the profile of the outer frame.This ensures that full horizontal or vertical airflow distributioncan be achieved.All other details in terms of dimensions fixings and plenumboxes are as standard.Notes1. List radius is to inside edge of opening (min radius 3000mm)2. List length is the arc length of the inside edge of the opening.3. For joining sections together use fir tree studs and dowel pins asshown on Page 34. Maximum plenum box length as followsover 15m radius: 1500over 10m radius: 1000over 7m radius: 6005. Under 7m radius shaped boxes will be required.See Note 1Ceiling Opening7

SERIES GSLLinear Slot DiffuserEndFlangesand EndCapsEnd caps-Ref: ECEnd Flanges-Ref: EFFixingOptionsThe standard fixing option for the GSL slot diffuser is thepopular concealed bracket fixing. The concealed bracketsare fixed to the rear of the diffuser and quickly push fit intothe plenum. Unclipping the diffuser blade allows access tothe captive nuts on the brackets to tighten and align the unitin place.Where access is easily available to the ceiling void analternative fixing option is to simply drill through the neck ofthe diffuser and the plenum box and then rivet into place.This offers a unit cost saving over the standard concealedbracket fixing arrangement but may take a little more time toinstall.A further fixing option is offered in the form of a toggle latchclip. One of the quickest and easiest fixing options by far.The diffuser is simply located into the plenum and firmed upinto place by pushing the toggle fixings into place.For installations without a plenum the diffuser alwaysautomatically includes holes for standard drop rod supporton the diffuser back straps. The back straps are spaced onapprox. 300mm centres.StandardConcealedBracket FixingOptionalDrill and RivetFixingOptionalToggle FixingOptionalSupport Brackets(By others)BlankingPlatesFor inactive or dummy sections, matt black blanking platescan be supplied. Blanking plates are supplied in standard150mm lengths and simply locate onto the back of thediffuser where they can be secured with standardself- tapping screws.8

PlenumBoxSeries PBOVERALL LENGTH = LIST LENGTH - 20/A LENGTH / 250TYP.OUTSIDEW5025Plenum Supply Volume L/SOVERALL HEIGHT H‘C’36 TO FACEOF CEILINGTOGGLE FIXINGWHERE SPECIFIEDACOUSTIC/THERMAL INSULATION (12mm)WHERE SPECIFIEDINLET SIZING (SPIGOT DIAMETER)300250200150100500100125150175200225250275300325350Minimum Recommended DiameterFor low noise levels one size larger is recommendedNo of Slots Width W1 53.52 963 138.54 1815 223.56 2667 308.58 351Nominal Spigot StandardDia (or height)C Height H100 220125 220150 262.5160 262.5200 305250 347.5300 390350 432.5General Specification0.7mm Galvanised or Zintec coated mild steel construction.Spigot Construction: Standard sizes use plastic clip-in spigot.Nonstandard, a sealed screw-in spigot.Thermal Insulation: 12mm Pyrosorb foam approx. U-value 4.7 Wm -2 k -1VolumeControlOptionsTELEFLEXREF. DTQUADRANTREF. DQIRISREF. DIMAXIMUMSIZE IRIS =CORDREF. DC300 DIAOPERATIONWITH POZIDRIVEOPERATE WITHEXTERIOR HANDLEOPERATE WITHEXTERIOR LEVEROPERATE USINGCORD THROUGHTHROUGHDIFFUSER FACETO BALANCEDAMPERTO BALANCEDAMPERDIFFUSER FACESpigot length = Spigot dia.9

SERIES GSLLinear Slot DiffuserSizingNomogram:HorizontalDistribution10

SizingNomogram:VerticalDistribution11

SERIES GSLLinear Slot DiffuserOrderingSpecification(MitredCorner)Note:All mitred corners supplied size 200x200 Internal length(see illustration on page 5).Diffuser ordering specification: See Page 12.Plenum Box ordering Specification: See Page 13GILBERTSHead Office and WorksGILBERTS (BLACKPOOL) LTDGilair Works, Clifton Road,Blackpool.Lancashire FY4 4QT.Telephone: (01253) 766911Fax: (01253) 767941e-mail: sales@gilbertsblackpool.comWeb: www.gilbertsblackpool.comGilberts (Blackpool) Ltd reserve the right to alter the specification without notice. The information contained in this leaflet is correct at time of going to press © 2012.