LINEAR DIFFUSERS KM SERIES OVERVIEW CHARACTERISTICS APPLICATIONS

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1 LINEAR DIFFUSERS OVERVIEW CHARACTERISTICS APPLICATIONS KM OVERVIEW : KM series linear diffusers are an excellent solution as air terminal devices. They are made in anodized aluminium and they are equipped with adjustable deflectors. These deflectors permit to obtain multidirectional flow of delivery air and the optimization of diffuser perfomance in the specific application. This kind of diffusers is suggested for all civil applications that require linear and specific air diffusion. KM series is designed to be installed without mounting frame and without screws on frontal side. This kind of linear diffuser can be manufactured with a maximum of 8 slots in order to satisfy all possible applications. CHARACTERISTICS AND OPERATION : KM diffusers are equipped with adjustable deflector blades which permit high induction level. The possibility to change air flow direction into a range of 180 degree, leave costant the value of pressure drop and free area of ATD. Deflectors divide the main air flow to several vertical and horizontal air jets which cause a high induction effect. It's possible to obtain combined jets (vertical and horizontal, left and right) with the same slot. APPLICATIONS : Generally, KM series diffusers are installed on the ceiling for civil buildings which have a mixed air distribution system. The installation height is included between 2,6 and 6,0 m. The air flow rate is variable from 200 to m3/h with temperature gradient between +15 C and 10 C. DIFFUSER FIXING TO THE CEILING : S2 mounting system (shown on following pages) is constituted from supports fixed on diffusor's lateral sides. These supports are joined to the ceiling by a traction system. This sistem can substain the plenum. S3 mounting system is constituted from supports fixed on diffusor lateral sides. In this case, these supports connect the diffusor to the plenum that is fixed to the ceiling. DIFFUSER FIXING TO THE PLENUM : S2 mounting system is carried out by self-threading screws applied to lateral sides of diffuser body. S3 mounting system is fixed by mounting bridges. STANDARD FINISHING : KM series diffuser can be manufactured from anodized extruded aluminium or from extruded aluminium painted with colour white RAL 9010 (epoxy powder treatment). MATERIALS : Diffuser in extruded aluminium, plenum in galvanized sheet steel, external insulation self-extinguishing extinguishing material class 1. CONTRAST CALIBRATING GATE : The regulation is carried out by a command inside the diffuser. U08 Diffusion-vers xls U08-1

2 LINEAR DIFFUSERS TECHNICAL DRAWINGS KM KM 1 slot linear diffuser KM 2 slots linear diffuser. KM 3 slots linear diffuser. KM 4 slots linear diffuser. U08 Diffusion-vers xls U08-2

3 LINEAR DIFFUSERS SOUND POWER KM Data referring to lengths of 1 m with possible damper, fully opened. Data measured in reverberating room according to international standards: ISO : Acoustic - determination of sound power levels of noise sources using sound pressure - Precision methods for reverberation rooms ISO : Acoustic - determination of sound power levels of noise from air-terminal devices ; air terminal units; dampers and valves by measurement in a reverberation room. The shown data does not take into consideration the attenuation resulting from the surroundings where the diffuser is installed. Such attenuation is normally included between 6 and 10 dba and is determined by the size of the surrounding space, its shape and the characteristics of the furniture and room fittings. U08 Diffusion-vers xls U08-3

4 LINEAR DIFFUSERS PRESSURE LOSS KM Data referring to lengths of 1 m with possible damper, fully opened. Data measured in reverberating room according to international standards: ISO : Air distribution and air diffusion - Laboratory. Aerodynamic testing and rating of air terminal devices. U08 Diffusion-vers xls U08-4

5 LINEAR DIFFUSERS AERAULIC DATA KM Data referring to lengths of 1 m with possible damper, fully opened. Data measured in reverberating room according to international standards: ISO : Air distribution and air diffusion - Laboratory. Aerodynamic testing and rating of air terminal devices. L (m) horizontal distance in metres from the centre of the diffuser Vl (m/s) maximum speed inside the air stream U08 Diffusion-vers xls U08-5

6 LINEAR DIFFUSERS TECHNICAL DATA KM KM Linear diffusers with fixing supports and plenum. slots n B C , , , ,5 L L + 20 L U08 Diffusion-vers xls U08-6

7 KM LINEAR DIFFUSERS AND PLENUM TECHNICAL DATA AND MOUNTING SYSTEM KM L (S2) 60 L (S3) T1 T2 H H H1 H2 ØD 25 ØD 25 FISSAGGIO S2 FIXING tipo S2 FISSAGGIO S3 FIXING tipo S3 supports n slots Ø flex duct D T1 T2 H H1 H2 L (S2) L (S3) ABS (*) ABS (*) ABS (*) ABS (*) ABS (*) Steel Steel Steel (*) Steel on request Number of coupling: 1 for lenghts to 1599 mm, 2 for lenghts to 1600 a 2000 mm. U08 Diffusion-vers xls U08-7

8 KM LINEAR DIFFUSERS AND PLENUM HOW TO ORDER KM KM A B C D E Linear diffuser with equalizer, sliding damper and deflectors with sliding damper and deflectors with deflectors with sliding damper (without deflectors) diffuser profile only number of slots (form 1 up to 8) length -- R anodized profile RAL 9010 profile KM A R P Plenum for diffuser KM S2 fixing - insulated S2 fixing - not insulated S3 fixing - insulated S3 fixing - not insulated number of slots (form 1 up to 8) length P Standard lengths: 800 mm 1000 mm 1500 mm All intermediate sizes are available on request 2000 mm AN Angle junction number of slots (form 1 up to 8) -- R anodized profile RAL 9010 profile AN 2 R U08 Diffusion-vers xls U08-8

9 WITH DEFLECTORS OVERVIEW CHARACTERISTICS APPLICATIONS KM-G KM-F OVERVIEW : The KM-F series adjustable multidirectional linear aluminium diffusers represent a tested solution of air diffusion. The direction of the air exiting the diffuser is regulated and controlled by means of a central blade placed inside each slot. this solution allows to precisely adjust in the easiest way possible the horizontal and vertical direction of the flow of air. The KM-F series has be realised to be installed without the use of visible screws. These diffusers are assembled with up to 4 slots to accommodate all possible applications. FINISH : The KM-F series are made in naturally anodized aluminium. On request they can be supplied with an epoxy finishing on the surface, white RAL MATERIALS : Diffuser in naturally extruded aluminium, deflecting blade in black profile aluminium, black Polypropylene deflecting blade, plenum in galvanized steel, externally isolated in autoestinguishing Polyethylene, certified Class 1. DAMPER REGULATION : The calibration damper is actioned by a level inside the diffuer. APPLICATIONS: A diffuser suitable for all civil applications in any air mixing ventilation system for medium height installations, between 2.6 and 6 metres. It allows to heat large spaces or large shopping centre galleries and corridors. The ideal application is close to large windows or even glass walls to prevent the forming of condensation. FIXING OF DIFFUSER TO THE CEILING : The S2 method of fixing (later explained) is done by means of fixing of traction systems between the laterally fixed supports in the body of the diffuser and the ceiling. With the S3 method, using a traction fixing system between the supports fixed directly in the plenum and the ceiling. Regulation Regolazione for per horizontal lancio orizzontale FIXING OF THE DIFFUSER TO THE PLENUM : The fixing in the S2 system is done by means of laterally autofilletting screws in the body of the diffuse. Inthe S3 system by means of fixing bridges. Regolazione Regulation for per vertical lancio verticale U08 Diffusion-vers xls U08-9

10 WITH DEFLECTORS CONSTRUCTION DIAGRAMS KM-G KM-F Single slot KM linear diffuser Two slots KM linear diffuser. 85,5 78,5 53,6 53,6 28, ,15 77,3 28, , ,15 115,8 Three slots KM linear diffuser Four slots KM linear diffuser. 162,5 152,5 53,6 53,6 28, , , ,15 154,3 28, , , , ,15 192,8 U08 Diffusion-vers xls U08-10

11 WITH DEFLECTORS FUNCTIONAL CHARACTERISTICS THROW VALUES SINGLE SLOT DIFFUSER KM-G KM-F SINGLE SLOT DIFFUSER: data based on the height of the ceiling of 3m in isothermal conditions. DistanceL between L(m) diffusers(m) (m³/h) 140(m³/h) 120(m³/h) 100(m³/h) 80(m³/h) 60(m³/h) Speed at height of Vt(m/s) 1.8m from floor (m/s) Regulation for horizontal The diagram allows to obtain the air speedatthelimitoftheoccupiedarea (1,8mfromthefloor)inrelationtothe distance L between the diffusers and the air flow per meter of the diffuser. For diffusers with lengths different to 1m the exiting air flow must be regulated divided by the diffuser length showninmetres. Example: length: 1,5m air flow: 300m³/h 300 / 1,5 = 200 air flow per metre: 200m³/h Distance Y y(m) from the ceiling (m) (m³/h) 120(m³/h) 140(m³/h) Regulation for vertical The diagram allows to obtain the air speed in variation to the distance from the diffuser. For diffusers with lengths different to 1m the exiting air flow must be regulated divided by the diffuser length shown in metres. Example: length: 1,5m air flow: 300m³/h 300 / 1,5 = 200 air flow per metre: 200m³/h (m³/h) 60(m³/h) 80(m³/h) Speed at distance Vt(m/s) Y from the ceiling (m/s) L(m) y(m) Vt 3m 1.8m Vt OCCUPIED Aufenthalts-Bereich ZONE U08 Diffusion-vers xls U08-11

12 WITH DEFLECTORS FUNCTIONAL CHARACTERISTICS THROW VALUES TWO SLOTS DIFFUSER KM-G KM-F TWO SLOTS DIFFUSER: data based on the height of the ceiling of 3m in isothermal conditions. DistanceL between diffusers(m) L(m) (m³/h) Speed at height of 1.8m Vt(m/s) from floor (m/s) 100(m³/h) 120(m³/h) 140(m³/h) 160(m³/h) 180(m³/h) Regulation for horizontal The diagram allows to obtain the air speed at the limit of the occupied area (1,8m from the floor) in relation to the distance L between the diffusers and the air flow per meter of the diffuser. For diffusers with lengths different to 1m the exiting air flow must be regulated divided by the diffuser length shown in metres. Example: length: 1,5m air flow: 300m³/h 300 / 1,5 = 200 air flow per metre: 200m³/h Distance Y from y(m) the ceiling (m) (m³/h) 100(m³/h) 120(m³/h) 140(m³/h) 160(m³/h) 180(m³/h) Regulationfor vertical The diagram allows to obtain the air speed in variation to the distance from the diffuser. For diffusers with lengths different to 1m the exiting air flow must be regulated divided by the diffuser length shown in metres. Example: length: 1,5m air flow: 300m³/h 300 / 1,5 = 200 air flow per metre: 200m³/h Speed at distance Vt(m/s) Y from the ceiling m/s) L(m) y(m) Vt 3m 1.8m Vt OCCUPIED Aufenthalts-Bereich ZONE U08 Diffusion-vers xls U08-12

13 WITH DEFLECTORS FUNCTIONAL CHARACTERISTICS THROW VALUES THREE SLOTS DIFFUSER KM-G KM-F THREE SLOTS DIFFUSER: data based on the height of the ceiling of 3m in isothermal conditions. DistanceL between L(m) diffusers(m) (m³/h) 180(m³/h) Speed at height of 1.8m Vt(m/s) from floor (m/s) 240(m³/h) 300m³/h) 360(m³/h) 420(m³/h) Regulation for horizontal The diagram allows to obtain the air speed at the limit of the occupied area (1,8m from the floor) in relation to the distance L between the diffusers and the air flow per meter of the diffuser. For diffusers with lengths different to 1m the exiting air flow must be regulated divided by the diffuser length shown in metres. Example: length: 1,5m air flow: 300m³/h 300 / 1,5 = 200 air flow per metre: 200m³/h Distance Y from y(m) the ceiling (m) 3 Regulationfor Regolazione per vertical lancioorizzontale i l The Il diagramma allows consente to obtain di ottenere the air la 2.5 speed velocità in variation dell'aria to althe limite distance dellafrom zona occupata (1,8m dal pavimento) in 2 the diffuser. For funzione diffusers dellawith distanza lengths L tra different i diffusori to 1m e della the portata exiting d'aria air flow per metro must be di 1.5 regulated diffusore. divided by the diffuser length shown Per lunghezze in metres. di diffusore diverse da Example: 1m la portata erogata deve essere divisa 1 length: per la lunghezza 1,5m del diffusore espressa air in metri flow: 300m³/h 300 Esempio: / 1,5 = 200 air lunghezza: flow per1,5m metre: 200m³/h portata: 500m³/h 500 / 1,5 = portata per metro: 333m³/h 120(m³/h) 180(m³/h) 240(m³/h) 300m³/h) 360(m³/h) 420(m³/h) Speed at distance Vt(m/s) Y from the ceiling (m/s) L(m) y(m) Vt 3m 1.8m Vt OCCUPIED Aufenthalts-Bereich ZONE U08 Diffusion-vers xls U08-13

14 WITH DEFLECTORS FUNCTIONAL CHARACTERISTICS THROW VALUES FOUR SLOTS DIFFUSER KM-G KM-F FOUR SLOTS DIFFUSER: data based on the height of the ceiling of 3m in isothermal conditions. DistanceL between L(m) diffusers(m) (m³/h) 240(m³/h) Speed at height of 1.8m Vt(m/s) from floor (m/s) 320(m³/h) 400m³/h) 480(m³/h) 560(m³/h) Regulation for horizontal The diagram allows to obtain the air speed at the limit of the occupied area (1,8m from the floor) in relation to the distance L between the diffusers and the air flow per meter of the diffuser. For diffusers with lengths different to 1m the exiting air flow must be regulated divided by the diffuser length shown in metres. Example: length: 1,5m air flow: 300m³/h 300 / 1,5 = 200 air flow per metre: 200m³/h Distance Y from y(m) the ceiling (m) (m³/h) 180(m³/h) 300m³/h) 240(m³/h) 420(m³/h) 360(m³/h) Regulation for vertical The diagram allows to obtain the air speed in variation to the distance from the diffuser. For diffusers with lengths different to 1m the exiting air flow must be regulated divided by the diffuser length shown in metres. Example: length: 1,5m air flow: 300m³/h 300 / 1,5 = 200 air flow per metre: 200m³/h Speed at distance Vt(m/s) Y from the ceiling (m/s) L(m) y(m) Vt 3m 1.8m Vt OCCUPIED Aufenthalts-Bereich ZONE U08 Diffusion-vers xls U08-14

15 WITH DEFLECTORS FUCTIONAL CHARACTERISTIC AIR FLOW LOSS KM-G KM-F p(pa) Blade regulated for horizontal Single slot diffuser The diagrams allows to obtain the pressure loss per linear metre of the diffuserinrelationtotheairflowin both the conditions of regulation of the deflecting blade. The regulation for a horizontal thouw allows larger air flows. Vertical : horizontal blade Horizontal : completely tilted blade For diffuser lengths differnt to one metre, consider the air flow per metre of diffuser Blade regulated for vertical Q(m³/h) Example: length: 1,5m air flow: 300m³/h air flow per metre: 200m³/h p(pa) Blade regulated for horizontal Blade regulated for vertical Single slot diffuser The diagrams allows to obtain the pressure loss per linear metre of the diffuser in relation to the air flow in both the conditions of regulation of the deflecting blade. The regulation for a horizontal thouw allows larger air flows. Vertical : horizontal blade Horizontal : completely tilted blade For diffuser lengths differnt to one metre, consider the air flow per metre of diffuser. Example: length: 1,5m air flow: 300m³/h air flow per metre: 200m³/h Q(m³/h) U08 Diffusion-vers xls U08-15

16 WITH DEFLECTORS FUCTIONAL CHARACTERISTIC AIR FLOW LOSS KM-G KM-F Blade regulated for horizontal Single slot diffuser The diagrams allows to obtain the pressure loss per linear metre of the diffuserinrelationtotheairflowin both the conditions of regulation of the deflecting blade. The regulation for a horizontal thouw allows larger air flows. Vertical : horizontal blade Horizontal : completely tilted blade p(pa) Blade regulated for vertical For diffuser lengths differnt to one metre, consider the air flow per metre of diffuser. Example: length: 1,5m air flow: 300m³/h air flow per metre: 200m³/h Q(m³/h) Blade regulated for horizontal Single slot diffuser The diagrams allows to obtain the pressure loss per linear metre of the diffuserinrelationtotheairflowin both the conditions of regulation of the deflecting blade. The regulation for a horizontal thouw allows larger air flows. Vertical : horizontal blade Horizontal : completely tilted blade p(pa) Blade regulated for vertical For diffuser lengths differnt to one metre, consider the air flow per metre of diffuser. Example: length: 1,5m air flow: 300m³/h air flow per metre: 200m³/h Q(m³/h) U08 Diffusion-vers xls U08-16

17 WITH DEFLECTORS TECHNICAL DATA KM-G KM-F slot - sound power Data measured in reverberation room in accordance with international standards: ISO : Acoustic - determination of sound power levels of noise sources using sound pressure - Precision methods for reverberation rooms Lw (dba) Q (m³/h) ISO : Acoustic - determination of sound power levels of noise from air-terminal devices ; air terminal units; dampers and valves by measurement in a reverberation room. The data presented does not consider the attenuation given by the area of installation. This attenuation is normally between 6 and 10 dba and is determined by the room size, the shape of the environment and the interior features slots - sound power 55 Lw (dba) Q (m³/h) 60 3 slots - sound power 55 Lw (dba) Q (m³/h) 60 4 slots - sound power 55 Lw (dba) Q (m³/h) U08 Diffusion-vers xls U08-17

18 WITH DEFLECTORS INSTALLATION CHARACTERISTICS PLENUM CONNECTION KM-G KM-F L (S2) 60 L (S3) H H H1 H2 ØD 25 ØD 25 Fixing type S2 Fixing type S3 N slots ØD H H1 H2 L (S3) L (S2) ABS(*) ABS(*) ABS(*) ABS(*) (*) Steel on request U08 Diffusion-vers xls U08-18

19 WITH DEFLECTORS HOW TO ORDER KM-G KM-F KM F G Linear diffuser with sliding damper without damper number of slots (from 1 up to 8) length -- R anodized profile RAL 9010 profile KM F R P Plenum for diffuser KM S2 fixing - insulated S2 fixing - not insulated S3 fixing - insulated S3 fixing - not insulated number of slots (from 1 up to 8) length P Standard lengths: 800 mm 1000 mm 1500 mm All intermediate sizes are available on request 2000 mm AN Angle junction number of slots (from 1 up to 8) -- R anodized profile RAL 9010 profile AN 2 R U08 Diffusion-vers xls U08-19

20 U08 Diffusion-vers xls U08-20

21 OVERVIEW CHARACTERISTICS APPLICATIONS KL OVERVIEW : The KL series diffusers represent the best development for this type of air diffusion units. Their particular structure allows to direct the flow of injected air along the ceiling. The effect is one of a progressive mix with the air in the room without the need of creating air currents or air vortexes that may be perceptible even in cooling mode. In contrast it is possible to direct the flow of injected air rapidly towards the floor, with a large forcing action to obtain a rapid heating of the room. The modular structure allows for an unlimited number of rows, parallel slots, without any visible joint line showing. The KL series diffusers stand out thanks to their innovative design, characterised by its soft lines and curved edges, not purely for aesthetic value. It is a result of accurate fluid dynamic studies, carried out using innovative mathematic models, aimed at optimizing the distribution of the speed of air exiting the diffuser. The KLV series diffusers are complemented with their own line of plenum boxes made in such a way that when installing, no particular tools or accessories are required for the job. WORKING CHARACTERISTICS: The KL series diffusers are made of a diffuser body constructed in aluminium, housing the various air expulsion slots and a series of deflecting blades, also in aluminium, for horizontal or vertical orientation flow of the air. The direction may be easily adjusted without the need to remove the diffuser itself. The body of the diffuser may be integrated with a regulation damper having small square holes. This solution has been studied so as to obtain a precise calibration of the quantity of air injected into the room and at the same time, to reduce to a minimum the pressure loss with the damper fully opened. FITTING OF THE DIFFUSER: The KL diffusers are fitted with specific plenums by means of suspension springs or with mounting bridges. This allows for a rapid fitting even after all masonry work has been completed. FINISH: The KL diffusers are constructed with an anodized or RAL 9010 painted aluminium body with deflecting blades also painted black or white RAL9010. Other special finishes may be provided upon request. MATERIALS: Diffuser completely in naturally anodized extruded aluminium, plenum from galvanized steel sheet and external insulation in self-extinguishing Class1 material. VERSIONS : KLV Series: identifiable from the large area that allows to minimise the pressure loss and noise even at elevated air flow capacities. Adjustment can be made to the air flow via a damper in the plenum connector. KLS Series: identifieable by the possibility of installing sliding regulation dampers inside the body of the diffuser to allow adjustment to the air flow individually for each linear slot. APPLICATIONS: The KL diffuser series are used in ventilations systems in facilities where the ceiling height is between 3 and 6 meters, such as open space offices, commercial galleries and hospital wards. The achievable air flows vary in relation to the length of the diffuser and the number of slots. The capacities are included between 50m³/h and 120m³/h per meter per slot with temperature grades varying between +15 C end I 10 C. KLS KLV U08 Diffusion-vers xls U08-21

22 AIR FLOW REGULATION KL Configuration for a horizontal Flow The slow follows the line of the ceiling Guaranties the total absence of air currents both in heating and cooling. Configuration for a vertical flow The flow penetrates the room directly Prevents thfor lengths greater or euqal to 1500mm used for heating. CHOICE OF DIRECTION OF THE FLOW: The horizontal flow represents the more common use for this kind of diffuser, both in heating and cooling. The flow stays close to the ceiling and spreads horizontally inside the room. This generates a vertical recall effect of the air already present guarantying the perfect mix without the presence of air currents within the occupied zone. The vertical flow, used when heating, allows to send hot air directly in the occupied zone, contrasting the common tendency of hot air to stratify due the lower density in the higher parts of the room. The change of direction of the flow is obtained turning the deflector blade from inclined to horizontal and vice versa. The blade is adjusted from outside the diffusers with a leaver, at both the extremities of each slot. U08 Diffusion-vers xls U08-22

23 DIMENSIONS KL efficient section AK for a diffuser L=1 m (m²) 1 slot 2 slots 3 slots 4 slots horizontal 0, , , ,03070 vertical 0, , , ,05700 Holes in counter ceiling Given L as the nominal length of the diffuser, the holes in the counter ceiling will need to be: length width Example: 1 slot diffuser L+15 x 57 millimetres 1 slot diffuser L= slot diffuser L+15 x 95 millimetres hole 2015x57 mm 3 slot diffuser L+15 x 134 millimetres 4 slot diffuser L+15 x 177 millimetres U08 Diffusion-vers xls U08-23

24 DIMENSIONS KL OVERALL DIMENSIONS L < 1500 mm 1500 L 2000 mm Slots H S connector ØD connector ØD mm mm qty mm qty mm ABS(*) ABS(*) ABS(*) ABS(*) ABS(*) ABS(*) ABS(*) ABS(*) (*) Steel on request U08 Diffusion-vers xls U08-24

25 METHOD OF ANALYSIS OF PERFORMANCE KL Test Method The analysis of the aeraulic performances of the KLV series diffusers have been carried out by means of a "virtual test laboratory". All the tests and the relative measurements have been conducted by means of an advanced CFD (Computational Fluid Dynamics) software. This applies the method of the finished elements to the fluid dynamic for the analysis of speeds, air flow distribution and pressures losses. The dimensions of the virtual room in the test configuration for each single diffuser are: Width of the test room: br=5.6 m Length of the test room: lr=7.5 m Height of the test room: hr=3.0 m The Values of flow length of each diffuser have been defined in isothermal conditions in accordance with ISO 5219 regulation with deflectors angled in "cooling" position, for horizontal flow. The length of the flow is indicated by values obtained from the speed along the trajectory of the air vain. An analysis has also been carried out of the intersection of the flow of two diffusers with equal flow rate placed opposite at a distance of 4.5 meters. In this case the obtained results show the air speed of the intermediate zone between the two diffusers at different heights. The values of the depth of penetration have been defined with the deflectors angled in "heating" position with a temperature difference between injected and room temperature of 10 C. The best possible adherence to real conditions has been followed considering the dissipation of heat surfaces of the virtual test room. cooling conditions deflectors angled for horizontal flow The values of pressure loss have been defined in isothermal conditions with deflectors angled both at "heating" and "cooling" positions. cooling conditions joining of flows The Ak values (efficient section for the expulsion of the air flow) have been defined in accordance with ISO 5219 regulation. fluiddynamic analysis carried out by heating conditions deflectors angled for vertival flow U08 Diffusion-vers xls U08-25

26 PERFORMANCE ONE SLOT KL Vo (m/s) 0,9 0,8 0,7 0,6 0,5 0,4 0,3 0,2 0,1 0 KL 1 Vo for Hr=3m 140m³/h 110m³/h 80m³/h 50m³/h A Distance between the diffusers (m) Correction factor Kf VL (m/s) 1,2 1 0,8 0,6 0,4 0,2 0 0,7 0,6 0,5 0,4 0,3 0,2 0,1 0,0 KL 1 Correction factor for Hr different to 3m 2 2,5 3 3,5 4 4,5 5 5,5 Hr Height of the room (m) KL 1 Throw 140m³/h 110m³/h 80m³/h 50m³/h L (m) Data obtained from CFD mathematical model in a virtual test room, operating in isothermic conditions in accordance with international standard: ISO : Air distribution and air diffusion - Laboratory. Aerodynamic testing and rating of air terminal devices. A (m) distance between diffusers Vo (m/s) speed at external limit of occupied area L (m) horizontal distance in meters from centre of the diffuser VL (m/s) maximum speed in air stream at distance L For Hr different to 3m, use the multiplier factor KF: Vo (h) = Vo x Kf Fluid dynamic analysis carried out by U08 Diffusion-vers xls U08-26

27 PERFORMANCE ONE SLOT KL H1 (m) KL 1 Vertical T=10 C 2 1,8 1,6 1,4 1,2 1 0,8 0,6 0,4 0, Q (m³/h) Data obtained from CFD mathematical model in a virtual test room operating in heating conditions with T=10 C in accordance with international standard: ISO : Air distribution and air diffusion - Laboratory. Aerodynamic testing and rating of air terminal devices. H1 (m) vertical distance in meters from the centre of the diffuser where the inversion of the air flow occurs. Lw (dba) Data measured in reverberating room in accordance with the following international standards: ISO : Acoustic - determination of sound power levels Lw Horizontal of noise sources using sound pressure - Precision methods for reverberation rooms KLV 1 Sound power Lw Vertical Q (m³/h) ISO : Acoustic - determination of sound power levels of noise from air-terminal devices ; air terminal units; dampers and valves by measurement in a reverberation room. The data shown does not consider the attenuation given by the place of installation. This attenuation is normally included between 6 and 10dBa and is determined by the dimensions of the room, its shape and the arrangements of the furnishings within it. Lw (dba) KLS 1 Sound power Lw Horizontal Lw Vertical Q (m³/h) U08 Diffusion-vers xls U08-27

28 PERFORMANCE ONE SLOT KL p (Pa) KLV 1 Pressure drop P Horizontal P Vertical Data obtained from CFD mathematical model in a virtual test room, operating in isothermic conditions in accordance with international standard: ISO : Air distribution and air diffusion - Laboratory. Aerodynamic testing and rating of air terminal devices Q (m³/h) p (Pa) KLS 1 Pressure drop P Horizontal P Vertical Q (m³/h) U08 Diffusion-vers xls U08-28

29 PERFORMANCE TWO SLOTS KL KL 2 Vo for Hr=3m 1,4 Vo (m/s) 1,2 1 0,8 0,6 270m³/h 210m³/h 150m³/h 90m³/h 0,4 0, A Distance between the diffusers (m) factor Kf Correction f VL (m/s) 1,2 1 0,8 0,6 0,4 0,2 0 0,9 0,8 0,7 0,6 0,5 0,4 0,3 0,2 0,1 0,0 KL 2 Correction factor for Hr different to 3m 2 2,5 3 3,5 4 4,5 5 5,5 Hr Height of the room (m) KL 2 Throw 270m³/h 210m³/h 150m³/h 90m³/h L (m) Data obtained from CFD mathematical model in a virtual test room, operating in isothermic conditions in accordance with international standard: ISO : Air distribution and air diffusion - Laboratory. Aerodynamic testing and rating of air terminal devices. A (m) distance between diffusers Vo (m/s) speed at external limit of occupied area L (m) horizontal distance in meters from centre of the diffuser VL (m/s) maximum speed in air stream at distance L For Hr different to 3m, use the multiplier factor KF: Vo (h) = Vo x Kf Fluid dynamic analysis carried out by U08 Diffusion-vers xls U08-29

30 PERFORMANCE TWO SLOTS KL H1 (m) KL 2 Vertical T=10 C 1,8 1,6 1,4 1,2 1 0,8 0,6 0,4 0, Q (m³/h) Data obtained from CFD mathematical model in a virtual test room operating in heating conditions with T=10 C in accordance with international standard: ISO : Air distribution and air diffusion - Laboratory. Aerodynamic testing and rating of air terminal devices. H1 (m) vertical distance in meters from the centre of the diffuser where the inversion of the air flow occurs. Lw (dba) Data measured in reverberating room in accordance with the following international standards: ISO : Acoustic - determination of sound power levels Lw Horizontal of noise sources using sound pressure - Precision methods for reverberation rooms KLV 2 Sound power Lw Vertical Q (m³/h) ISO : Acoustic - determination of sound power levels of noise from air-terminal devices ; air terminal units; dampers and valves by measurement in a reverberation room. The data shown does not consider the attenuation given by the place of installation. This attenuation is normally included between 6 and 10dBa and is determined by the dimensions of the room, its shape and the arrangements of the furnishings within it. Lw (dba) KLS 2 Sound power Lw Horizontal Lw Vertical Q (m³/h) U08 Diffusion-vers xls U08-30

31 PERFORMANCE TWO SLOTS KL p (Pa) KLV 2 Pressure drop P Horizontal P Vertical Data obtained from CFD mathematical model in a virtual test room, operating in isothermic conditions in accordance with international standard: ISO : Air distribution and air diffusion - Laboratory. Aerodynamic testing and rating of air terminal devices Q (m³/h) 90 KLS 2 Pressure drop p (Pa) P Horizontal P Vertical Q (m³/h) U08 Diffusion-vers xls U08-31

32 PERFORMANCE THREE SLOTS KL Vo (m/s) 1,6 1,4 1,2 1 0,8 0,6 KL 3 Vo for Hr=3m 370m³/h 290m³/h 210m³/h 120m³/h 0,4 0, A Distance between the diffusers (m) 1,2 KL 3 Correction factor for Hr different to 3m factor Kf Correction f VL (m/s) 1 0,8 0,6 0,4 0,2 0 1,2 1,0 0,8 0,6 0,4 2 2,5 3 3,5 4 4,5 5 5,5 Hr Height of the room (m) KL 3 Throw 370m³/h 290m³/h 210m³/h 120m³/h Data obtained from CFD mathematical ti model in a virtual test room, operating in isothermic conditions in accordance with international standard: ISO : Air distribution and air diffusion - Laboratory. Aerodynamic testing and rating of air terminal devices. A (m) distance between diffusers Vo (m/s) speed at external limit of occupied area L (m) horizontal distance in meters from centre of the diffuser VL (m/s) maximum speed in air stream at distance L For Hr different to 3m, use the multiplier factor KF: Vo (h) = Vo x Kf 0,2 0, L (m) Fluid dynamic analysis carried out by U08 Diffusion-vers xls U08-32

33 PERFORMANCE THREE SLOTS KL H1 (m) 2,5 2 1,5 1 KL 3 Vertical T=10 C Data obtained from CFD mathematical model in a virtual test room operating in heating conditions with T=10 C in accordance with international standard: ISO : Air distribution and air diffusion - Laboratory. Aerodynamic testing and rating of air terminal devices. H1 (m) vertical distance in meters from the centre of the diffuser where the inversion of the air flow occurs. 0, Q (m³/h) Lw (dba) KLV 3 Sound power Lw Horizontal Lw Vertical Q (m³/h) Data measured in reverberating room in accordance with the following international standards: ISO : Acoustic - determination of sound power levels of noise sources using sound pressure - Precision methods for reverberation rooms ISO : Acoustic - determination of sound power levels of noise from air-terminal devices ; air terminal units; dampers and valves by measurement in a reverberation room. The data shown does not consider the attenuation given by the place of installation. This attenuation is normally included between 6 and 10dBa and is determined by the dimensions of the room, its shape and the arrangements of the furnishings within it. Lw (dba) KLS 3 Sound power Lw Horizontal Lw Vertical Q (m³/h) U08 Diffusion-vers xls U08-33

34 PERFORMANCE THREE SLOTS KL p (Pa) KLV 3 Pressure drop P Horizontal P Vertical Data obtained from CFD mathematical model in a virtual test room, operating in isothermic conditions in accordance with international standard: ISO : Air distribution and air diffusion - Laboratory. Aerodynamic testing and rating of air terminal devices Q (m³/h) 90 KLS 3 Pressure drop p (Pa) P Horizontal P Vertical Q (m³/h) U08 Diffusion-vers xls U08-34

35 PERFORMANCE FOUR SLOTS KL Vo (m/s) 2 1,8 1,6 1,4 1,2 1 0,8 0,6 0,4 0,2 0 KL 4 Vo for Hr=3m 500m³/h 390m³/h 280m³/h 170m³/h A Distance between the diffusers (m) 1,2 KL 4 Correction factor for Hr different to 3m tor Kf Correction fact 1 0,8 0,6 0,4 0,2 Data obtained dfrom CFD mathematical model in a virtual test room, operating in isothermic conditions in accordance with international standard: ISO : Air distribution and air diffusion - Laboratory. Aerodynamic testing and rating of air terminal devices. VL (m/s) 0 1,4 1,2 1,0 0,8 0,6 0,4 0,2 0,0 2 2,5 3 3,5 4 4,5 5 5,5 Hr Height of the room (m) KL 4 Throw 500m³/h 390m³/h 280m³/h 170m³/h L (m) A (m) distance between diffusers Vo (m/s) speed at external limit of occupied area L (m) horizontal distance in meters from centre of the diffuser VL (m/s) maximum speed in air stream at distance L For Hr different to 3m, use the multiplier factor KF: Vo (h) = Vo x Kf Fluid dynamic analysis carried out by U08 Diffusion-vers xls U08-35

36 PERFORMANCE FOUR SLOTS KL H1 (m) 2,5 2 1,5 1 KL 4 Vertical T=10 C Data obtained from CFD mathematical model in a virtual test room operating in heating conditions with T=10 C in accordance with international standard: ISO : Air distribution and air diffusion - Laboratory. Aerodynamic testing and rating of air terminal devices. H1 (m) vertical distance in meters from the centre of the diffuser where the inversion of the air flow occurs. 0, Q (m³/h) Lw (dba) KLV 4 Sound power Lw Horizontal Lw Vertical Q (m³/h) Data measured in reverberating room in accordance with the following international standards: ISO : Acoustic - determination of sound power levels l of noise sources using sound pressure - Precision methods for reverberation rooms ISO : Acoustic - determination of sound power levels of noise from air-terminal devices ; air terminal units; dampers and valves by measurement in a reverberation room. The data shown does not consider the attenuation given by the place of installation. This attenuation is normally included between 6 and 10dBa and is determined by the dimensions of the room, its shape and the arrangements of the furnishings within it. Lw (dba) KLS 4 Sound power Lw Horizontal Lw Vertical Q (m³/h) U08 Diffusion-vers xls U08-36

37 PERFORMANCE FOUR SLOTS KL p (Pa) KLV 4 Pressure drop P Horizontal P Vertical Data obtained from CFD mathematical model in a virtual test room, operating in isothermic conditions in accordance with international standard: ISO : Air distribution and air diffusion - Laboratory. Aerodynamic testing and rating of air terminal devices Q (m³/h) 80 KLS 4 Pressure drop P Horizontal p (Pa) P Vertical Q (m³/h) U08 Diffusion-vers xls U08-37

38 ASSEMBLY INSTRUCTIONS VERSION WITH FIXING SPRING KLV KLS Vertically position the lug slot centrally or near the centre acting as shown in the picture, with a screwdriver at the ends of the deflector (without applying pressure to the centre of it). Locate the spring attached inside the plenum (shown above in section). Thread the hook shown in the picture through the slot with the deflector previously positioned vertically taking care to insert it on the side of the fixing hole shown. Number of springs: - 2 springs for diffuser, regardless of length Using the hook stretch the spring and hook it to the fixing hole. Repeat on the other side. Release the diffuser that as a result of the tension in the springs will stay aligned with the plenum. NOTE For lengths up to 2000mm there are two springs already included in the product code of the diffuser. For lengths over 2000mm composed of several diffusers, two mounting springs for each unit should be foreseen. U08 Diffusion-vers xls U08-38

39 FITTING INSTRUCTIONS FOR VERSIONS WITH FIXING BRIDGE KLV KLS Vertically position the lug of the central slot or near the centre acting as shown in the figure, with a screwdriver at the ends of the deflector (without applying pressure to the centre of it). Attach fixing bridges to the diffuser by inserting the screw heads in its slots. Insert the diffuser into the plenum and, turning the screws, place the bridge on the folds of sheet metal cut into the sides of the plenum. Number of bridges: - Up to 1500mm length; 2 bridges mm length over: 3 bridges. turn the screws until the diffuser completely touches the ceiling. NOTE For lengths up to 1500mm two bridges are already included in the code of the diffuser. For lengths over 1500mm up to 2000mm three bridges are already included in the code of the speaker. For lengths over 2000mm composed by various elements, it is necessary to foresee: 2 fixing bridges for each element of length up to 1500mm; 3 fixing bridges for each element of lengths greater than 1500mm. U08 Diffusion-vers xls U08-39

40 HOW TO ORDER KLV KLS KLV A 0 2 B 1000 (*) the version without deflectors is best used for the return of air. KLV Linear diffuser A R 0 P A B R Z anodized diffuser profile RAL 9010 diffuser profile spring fixing fixing with bridges number of slots (from 1 up to 8) length anodized deflector black deflector RAL 9010 deflector without deflector(*) KLS A 0 2 D B (*) the version without deflectors is best used for the return of air KLS A R 0 P Linear diffuser anodized diffuser profile RAL 9010 diffuser profile spring fixing fixing with bridges number of slots (from 1 up to 8) D N A B R Z length with sliding damper without sliding damper anodized deflector black deflector RAL 9010 deflector without deflector(*) number of slots (from 1 up to 8) length D N with damper (**) without damper P90 I 2 M1000 D (**) for the KLS series it is not recommended to use the damper in the plenum connector Standard lengths: 800 mm 1000 mm 1500 mm All intermediate sizes are available on request 2000 mm Plenums longer or equal to 1500mm are supplied with two connections P90 I N Plenum for linear diffuser KL insulated not insulated U08 Diffusion-vers xls U08-40

41 HIGH AIR FLOW LINEAR SLOT DIFFUSERS OVERVIEW CHARACTERISTICS APPLICATIONS KD OVERVIEW : The KD series linear diffusers allow to manage high air flows with minimum pressure losses and generated noise power. They allow to fully make us of the induction principle, guaranteeing optimum comfort conditions, no noticeable air currents and temperature uniformity, even in large areas by positioning the diffusers along the perimeter of the ceiling. CHARACTERISTICS AND OPERATION : The KD series diffusers are constructed from an aluminium diffuser body housing the different exhaust slots and a series of deflector blades, also in aluminium, for the horizontal or vertical air though. The change of direction of the air through can be easily made without removing the diffuser but simply using a supplied tool. The regulation of the air flow can be made by using a butterfly type damper in the plenum connection. DIFFUSER INSTALLATION: The KD series diffusers are installed inside special plenum boxes, by suspension using fixing bridges. This solution allows a quick installation even at the end of work carried out on the building site. FINISH : The KDA and KDF diffusers are constructed from an aluminium body anodized or painted white RAL 9010 with a black painted deflection blade. The KDP diffusers are constructed from an aluminium body and a carbon steel panel painted RAL 9010 and a black painted deflector blade. Special finishes for the diffuser body can be made on requested. APPLICATIONS : The KD series diffusers are ideal in application i with a ceiling height between 3 and 6 meters like open space offices, commercial galleries hospital wards or hotel rooms. VERSIONS KDA : standard version for ventilation; KDF: version for supply and extraction with anti-dust filter, ideal for guaranteeing the cleaning of the air in recycle systems; KDP: version installed on steel panel, suitable for installation in modular counter ceilings, used for supply of air. U08 Diffusion-vers xls U08-41

42 HIGH AIR FLOW LINEAR SLOT DIFFUSERS KDA VERSION DIMENSIONS KDA AK Efficient section for diffuser L=1 m (m²) 1 slot 2 slots 3 slots 4 slots Horizontal 0, , , ,04853 Vertical 0, , , ,08215 U08 Diffusion-vers xls U08-42

43 HIGH AIR FLOW LINEAR SLOT DIFFUSERS KDF VERSION DIMENSIONS KDF Rounded edge Straight edge AK Efficient section for diffuser L=1 m (m²) 2 slots F= 66,5 2 slots 3 slots 4 slots 3 slots F= 104,5 Horizontal 0, , , slots F= 144,5 Vertical 0, , ,08215 U08 Diffusion-vers xls U08-43

44 HIGH AIR FLOW LINEAR SLOT DIFFUSERS AIR THROW ADJUSTMENT KD Horizontal configuration The moves along the ceiling It guarantees the complete absence of air currents both in heating and cooling. Vertical configuration The air penetrates directly into the room Prevents the formation of layers of hot air when used for heating. CHOICE OF AIR THROW ORIENTATION : The horizontal represents the most common use of this type of diffuser, both for heating and cooling. The follows the ceiling and expands horizontally within the room. This generates a vertical recall of air present in the room, guaranteeing a perfect mixture of air without the presence of air currents within the occupied area. The vertical, used when heating, allows to send the hot air directly within the occupied area to hinder the formation of layers of hot air in higher parts of the room caused by the lesser density. The change of orientation of the air is obtained by rotating the deflector blade from an inclined position to a horizontal one, and vice versa. The blade is rotated from within the diffuser, with the use of a leaver at both extremities of the air slot. U08 Diffusion-vers xls U08-44

45 HIGH AIR FLOW LINEAR SLOT DIFFUSERS AIR THROW ADJUSTMENTS KD The adjustment of the air from horizontal to vertical position is made using the special lever supplied following the sequence here shown From horizontal to vertical From vertical to horizontal U08 Diffusion-vers xls U08-45

46 HIGH AIR FLOW LINEAR SLOT DIFFUSERS PLENUM FOR KDA KDA AHU SEIRES OVERALL DIMENSIONS L 1200 mm 1201 L 1500 mm 1501 L 2000 mm Slots H S connector ØD connector ØD connector ØD mm mm qty mm qty mm qty mm ABS(*) ABS (*) ABS (*) ABS (*) ABS (*) ABS (*) ABS (*) ABS (*) ABS (*) ABS (*) ABS (*) ABS (*) FANCOIL OVERALL DIMENSIONS L 800 mm 800 < L 1250 mm Slots H S connector ØD connector ØD mm mm qty mm qty mm ABS (*) ABS (*) ABS (*) ABS (*) ABS (*) ABS (*) ABS (*) ABS (*) (*) Steel on request The fancoil series plenums are built up to 1250mm in length and allow to reduce values of pressure losses almost to a minimum therefore allowing KDA series diffusers to be used in applications with low noise levels. U08 Diffusion-vers xls U08-46

47 HIGH AIR FLOW LINEAR SLOT DIFFUSERS PLENUM FOR KDA FITTING KDA To secure the KDA diffusers to the AHU and FANCOIL series plenums, strictly follow the fixing procedure shown below. Position the deflectors for vertical and hook the fixing bridges provided Insert the diffuser inside the plenum and place the bridges on the two blades inside the plenum Tighten the bridge screws by inserting the screwdriver within the diffuser, then position the deflectors as required. U08 Diffusion-vers xls U08-47

48 HIGH AIR FLOW LINEAR SLOT DIFFUSERS PLENUM FOR KDF KDP KDF KDP FILTER HOLDER OVERALL DIMENSIONS L 1200 mm Slots H S connection ØD mm mm qty mm ABS (*) ABS (*) ABS (*) (*) Steel on request The Filter Holder series plenums are built up to 1200mm in length and can be used both for the KDP, without panel, and KDP, with panel, diffusers. U08 Diffusion-vers xls U08-48

49 HIGH AIR FLOW LINEAR SLOT DIFFUSERS PLENUM FOR KDF KDP FITTING KDF KDP To secure the KDF and KDP diffusers, strictly follow the fitting procedure shown below. Open the diffuser by lifting and rotating the central section. Insert the diffuser inside the plenum until the slots in the frame are aligned with the holes in the end caps of the plenum. Fix the diffuser using the screws supplied in the hole on the plenum end caps. Insert the supplied filter blocking clamps in the grooves, insert the filter and fix in place with the supplied screws. Reclose the diffuser and, if necessary, adjust the deflectors in the chosen position. U08 Diffusion-vers xls U08-49

50 HIGH AIR FLOW LINEAR SLOT DIFFUSERS ONE SLOT PERFORMANCE KD Data obtained from CFD mathematical model in a virtual test room, operating in isothermic conditions in accordance with international standard: ISO : Air distribution and air diffusion - Laboratory. Aerodynamic testing and rating of air terminal devices. A (m) distance between diffusers Vo (m/s) speed at limit of occupied area L (m) horizontal distance in meters from the centre of diffuser VL (m/s) maximum speed in air stream at distance L For Hr different to 3m, use the multiplier factor KF: Vo (h) = Vo x Kf Fluid dynamic analysis carried out by U08 Diffusion-vers xls U08-50

51 HIGH AIR FLOW LINEAR SLOT DIFFUSERS ONE SLOT PERFORMANCE KD Data obtained from CFD mathematical model in a virtual test room operating in heating conditions with T=10 C in accordance with international standard: ISO : Air distribution and air diffusion - Laboratory. Aerodynamic testing and rating of air terminal devices. H1 (m) vertical distance in meters from the centre of the diffuser where the inversion of the air flow occurs. Data measured in reverberating room in accordance with the following international standards: ISO : Acoustic - determination of sound power levels of noise sources using sound pressure - Precision methods for reverberation rooms ISO : Acoustic - determination of sound power levels of noise from air-terminal devices ; air terminal units; dampers and valves by measurement in a reverberation room. With AHU plenum or Filterholder plenum The data shown does not consider the attenuation given by the place of installation. This attenuation is normally included between 6 and 10dBa and is determined by the dimensions of the room, its shape and the arrangements of the furnishings within it. With FANCOIL plenum U08 Diffusion-vers xls U08-51

52 HIGH AIR FLOW LINEAR SLOT DIFFUSERS ONE SLOT PERFORMANCE KD Data obtained from CFD mathematical model in a virtual test room, operating in isothermic conditions in accordance with international standard: ISO : Air distribution and air diffusion - Laboratory. Aerodynamic testing and rating of air terminal devices. With AHU series plenum With FANCOIL series plenum U08 Diffusion-vers xls U08-52

53 HIGH AIR FLOW LINEAR SLOT DIFFUSERS TWO SLOTS PERFORMANCE KD Data obtained from CFD mathematical model in a virtual test room, operating in isothermic conditions in accordance with international standard: ISO : Air distribution and air diffusion - Laboratory. Aerodynamic testing and rating of air terminal devices. A (m) distance between diffusers Vo (m/s) speed at external limit of occupied area L (m) horizontal distance in meters from centre of the diffuser VL (m/s) maximum speed in air stream at distance L For Hr different to 3m, use the multiplier factor KF: Vo (h) = Vo x Kf Fluid dynamic analysis carried out by U08 Diffusion-vers xls U08-53

54 HIGH AIR FLOW LINEAR SLOT DIFFUSERS TWO SLOTS PERFORMANCE KD Data obtained from CFD mathematical model in a virtual test room operating in heating conditions with T=10 C in accordance with international standard: ISO : Air distribution and air diffusion - Laboratory. Aerodynamic testing and rating of air terminal devices. H1 (m) vertical distance in meters from the centre of the diffuser where the inversion of the air flow occurs. Data measured in reverberating room in accordance with the following international standards: ISO : Acoustic - determination of sound power levels of noise sources using sound pressure - Precision methods for reverberation rooms ISO : Acoustic - determination of sound power levels of noise from air-terminal devices ; air terminal units; dampers and valves by measurement in a reverberation room. With AHU plenum or Filterholder plenum The data shown does not consider the attenuation given by the place of installation. This attenuation is normally included between 6 and 10dBa and is determined by the dimensions of the room, its shape and the arrangements of the furnishings within it. With FANCOIL plenum U08 Diffusion-vers xls U08-54

55 HIGH AIR FLOW LINEAR SLOT DIFFUSERS TWO SLOTS PERFORMANCE KD Data obtained from CFD mathematical model in a virtual test room, operating in isothermic conditions in accordance with international standard: ISO : Air distribution and air diffusion - Laboratory. Aerodynamic testing and rating of air terminal devices. With AHU series plenum With FANCOIL series plenum Including the filter pressure loss U08 Diffusion-vers xls U08-55

56 HIGH AIR FLOW LINEAR SLOT DIFFUSERS THREE SLOTS PERFORMANCE KD Data obtained from CFD mathematical model in a virtual test room, operating in isothermic conditions in accordance with international standard: ISO : Air distribution and air diffusion - Laboratory. Aerodynamic testing and rating of air terminal devices. A (m) distance between diffusers Vo (m/s) speed at external limit of occupied area L (m) horizontal distance in meters from centre of the diffuser VL (m/s) maximum speed in air stream at distance L For Hr different to 3m, use the multiplier factor KF: Vo (h) = Vo x Kf Fluid dynamic analysis carried out by U08 Diffusion-vers xls U08-56

57 HIGH AIR FLOW LINEAR SLOT DIFFUSERS THREE SLOTS PERFORMANCE KD Data obtained from CFD mathematical model in a virtual test room operating in heating conditions with T=10 C in accordance with international standard: ISO : Air distribution and air diffusion - Laboratory. Aerodynamic testing and rating of air terminal devices. H1 (m) vertical distance in meters from the centre of the diffuser where the inversion of the air flow occurs. Data measured in reverberating room in accordance with the following international standards: ISO : Acoustic - determination of sound power levels of noise sources using sound pressure - Precision methods for reverberation rooms ISO : Acoustic - determination of sound power levels of noise from air-terminal devices ; air terminal units; dampers and valves by measurement in a reverberation room. With AHU plenum or Filterholder plenum The data shown does not consider the attenuation given by the place of installation. This attenuation is normally included between 6 and 10dBa and is determined by the dimensions of the room, its shape and the arrangements of the furnishings within it. With FANCOIL plenum U08 Diffusion-vers xls U08-57

58 HIGH AIR FLOW LINEAR SLOT DIFFUSERS THREE SLOTS PERFORMANCE KD Data obtained from CFD mathematical model in a virtual test room, operating in isothermic conditions in accordance with international standard: ISO : Air distribution and air diffusion - Laboratory. Aerodynamic testing and rating of air terminal devices. With AHU series plenum With FANCOIL series plenum Including the filter pressure loss U08 Diffusion-vers xls U08-58

59 HIGH AIR FLOW LINEAR SLOT DIFFUSERS FOUR SLOTS PERFORMANCE KD Data obtained from CFD mathematical model in a virtual test room, operating in isothermic conditions in accordance with international standard: ISO : Air distribution and air diffusion - Laboratory. Aerodynamic testing and rating of air terminal devices. A (m) distance between diffusers Vo (m/s) speed at external limit of occupied area L (m) horizontal distance in meters from centre of the diffuser VL (m/s) maximum speed in air stream at distance L For Hr different to 3m, use the multiplier factor KF: Vo (h) = Vo x Kf Fluid dynamic analysis carried out by U08 Diffusion-vers xls U08-59

60 HIGH AIR FLOW LINEAR SLOT DIFFUSERS FOUR SLOTS PERFORMANCE KD Data obtained from CFD mathematical model in a virtual test room operating in heating conditions with T=10 C in accordance with international standard: ISO : Air distribution and air diffusion - Laboratory. Aerodynamic testing and rating of air terminal devices. H1 (m) vertical distance in meters from the centre of the diffuser where the inversion of the air flow occurs. Data measured in reverberating room in accordance with the following international standards: ISO : Acoustic - determination of sound power levels of noise sources using sound pressure - Precision methods for reverberation rooms ISO : Acoustic - determination i of sound power levels l of noise from air-terminal devices ; air terminal units; dampers and valves by measurement in a reverberation room. With AHU plenum or Filterholder plenum The data shown does not consider the attenuation given by the place of installation. This attenuation is normally included between 6 and 10dBa and is determined by the dimensions of the room, its shape and the arrangements of the furnishings within it. With FANCOIL plenum U08 Diffusion-vers xls U08-60

61 HIGH AIR FLOW LINEAR SLOT DIFFUSERS FOUR SLOTS PERFORMANCE KD Data obtained from CFD mathematical model in a virtual test room, operating in isothermic conditions in accordance with international standard: ISO : Air distribution and air diffusion - Laboratory. Aerodynamic testing and rating of air terminal devices. With AHU series plenum With FANCOIL series plenum Including the filter pressure loss U08 Diffusion-vers xls U08-61

62 HIGH AIR FLOW LINEAR SLOT DIFFUSERS CODES KD KDA High air flow linear slot diffuser A R 0 1 Anodized diffuser profile RAL 9010 diffuser profile Spring fixing Fixing with bridges number of slots (from 1 up to 8) A B R Z anodized deflector black deflector RAL 9010 deflector without deflector Length KDA A 0 2 B 900 Standard lengths: 800mm 1000mm 1500mm 2000mm KDF Filter holder slot diffuser A R V S Anodized diffuser profile RAL 9010 diffuser profile Straight edge Rounded edge number of slots (from 2 up to 4)* A B R Z anodized deflector black deflector RAL 9010 deflector without deflector Length (max 1200) KDF A V 2 B 900 *not possible for 1 slot Standard lengths: 600mm * not possible with more than 4 slots 900mm 1200mm Different lengths available at order stage Filter readily available only for standard lengths U08 Diffusion-vers xls U08-62

63 HIGH AIR FLOW LINEAR SLOT DIFFUSERS CODES KD KDP Filter holder linear diffuser with panel R RAL 9010 diffuser profile number of slots (from 2 up to 4)* R B Z RAL 9010 deflector black deflector without deflector Length of diffuser KDP R 2 B 900 Standard lengths: 600mm 900mm 1000mm Standard panel 1200x300mm Different lengths and panels agreeable at order stage Filter readily available only for standard lengths *not possible for 1 slot * not possible with more than 4 slots FP3 G2 filter 3mm thickness Length Width FP Filter length Filter width EXAMPLE = = = = Diffuser length -30mm 70mm 2 slot diffuser 105mm 3 slot diffuser 145mm 4 slot diffuser filter for KDP diffuser, 3 slots L=900 Length: = 870 Width: 105mm Code: FP U08 Diffusion-vers xls U08-63

64 HIGH AIR FLOW LINEAR SLOT DIFFUSERS CODES KD P9 1 2 I C N Plenum for linear diffuser KDA UTA series FANCOIL series External insulation Internal insulation No insulation number of slots (from 1 up to 8) Length N D M F Connectors in ABS without damper Connectors in ABS with flat Connectors in steel without Connectors in steel with perforated damper P9 1 I D P93 I C N Plenum for linear diffuser KDF and KDP External insulation Internal insulation No insulation number of slots (from 2 up to 4)* Length (max 1200) N D M F Connectors in ABS without damper Connectors in ABS with flat damper Connectors in steel without damper Connectors in steel with perforated damper P93 I D *not possible with 1 slot * not possible with more than 4 slots U08 Diffusion-vers xls U08-64

65 OVERVIEW CHARACTERISTICS APPLICATIONS KH OVERVIEW : The KH series linear diffusers allow to manage high air flows with minimum pressure losses and generated noise power. They allow to fully make use of the induction principle, guaranteeing optimum comfort conditions, no noticeable air currents and temperature uniformity, even in large spaces by positioning the diffusers along the perimeter of the ceiling. CHARACTERISTICS AND FUNCTION: The KH series diffusers are constructed from an aluminium body housing the different exhaust slots each with a pair of deflector blades. The change of direction of the air can be easily made without removing the diffuser. The regulation of the air flow can be made by using a butterfly type damper in the plenum connection. Horizontal configuration The air flows along the ceiling Guarantees the complete absence of air currents both in heating and cooling. APPLICATIONS : The KH diffusers are ideal in air ventilations applications with ceiling heights from 2,4 to 4 metres. DIFFUSER INSTALLATION: A The KH diffusers are installed inside special plenums fixed on the sides with screws or by suspension by using mounting bridges. This second solution allows for a quick installation even after all the work has been completed in the building site. The wider shape of the plenum allows to contain the generated noise and the pressure losses connected to the expanding effect of the air. FINISH : The KH diffusers are constructed from an aluminium or RAL 9010 painted body and deflector blades. Different finishes can be agreed on request. Vertical configuration The air penetrates directly into the room Prevents the formation of layers of hot air when used for heating. U08 Diffusion-vers xls U08-65

66 DIMENTIONS KH Efficient section AK for diffuser L=1 m (m²) 1 slot 2 slots 3 slots 4 slots 5 slots 0,012 0,025 0,037 0,052 0,069 U08 Diffusion-vers xls U08-66

67 PLENUM KH N slots B H ØN Lb ABS (*) ABS (*) 80, , ABS (*) 111, ABS (*) 141, ABS (*) 172,4 for L up to 1500 one connection ØN for L greater than 1500: two connections ØN (*) Steel on request Mounting bridge Corner connection U08 Diffusion-vers xls U08-67

68 PERFORMANCE ONE SLOT KH KH... 1 Horizontal KH... 1 Vertical KH... 1 Pressure drop Aeraulic data measured in isothermic conditions for a one meter long diffuser in accordance with the international standard: ISO : Air distribution and air diffusion - Laboratory. Aerodynamic testing and rating of air terminal devices. L (m) horizontal distance in meters from the centre of the diffuser VL (m/s) maximum air speed in the air vain at a distance L H (m) distance from ceiling Vh (m/s) speed at height H KH... 1 Sound power Acoustic data measured in reverberating room for a one meter long diffuser in accordance with the international standard: ISO : Acoustic - determination of sound power levels of noise sources using sound pressure - Precision methods for reverberation rooms ISO : Acoustic - determination of sound power levels of noise from air-terminal devices ; air terminal units; dampers and valves by measurement in a reverberation room. The data shown does not consider the attenuation given by the place of installation. This attenuation is normally included between 6 and 10dBa and is determined by the dimensions of the room, its shape and the arrangements of the furnishings within it. U08 Diffusion-vers xls U08-68

69 PERFORMANCE TWO SLOTS KH KH... 2 Horizontal KH... 2 Vertical KH... 2 Pressure drop Aeraulic data measured in isothermic conditions for a one meter long diffuser in accordance with the international standard: ISO : Air distribution and air diffusion - Laboratory. Aerodynamic testing and rating of air terminal devices. L (m) horizontal distance in meters from the centre of the diffuser VL (m/s) maximum air speed in the air vain at a distance L H (m) distance from ceiling Vh (m/s) speed at height H KH... 2 Sound power Acoustic data measured in reverberating room for a one meter long diffuser in accordance with the international standard: ISO : Acoustic - determination of sound power levels of noise sources using sound pressure - Precision methods for reverberation rooms ISO : Acoustic - determination of sound power levels of noise from air-terminal devices ; air terminal units; dampers and valves by measurement in a reverberation room. The data shown does not consider the attenuation given by the place of installation. This attenuation is normally included between 6 and 10dBa and is determined by the dimensions of the room, its shape and the arrangements of the furnishings within it. U08 Diffusion-vers xls U08-69

70 PERFORMANCE THREE SLOTS KH KH... 3 Horizontal KH... 3 Vertical KH... 3 Pressure drop Aeraulic data measured in isothermic conditions for a one meter long diffuser in accordance with the international standard: ISO : Air distribution and air diffusion - Laboratory. Aerodynamic testing and rating of air terminal devices. L (m) horizontal distance in meters from the centre of the diffuser VL (m/s) maximum air speed in the air vain at a distance L H (m) distance from ceiling Vh (m/s) speed at height H KH... 3 Sound power Acoustic data measured in reverberating room for a one meter long diffuser in accordance with the international standard: ISO : Acoustic - determination of sound power levels of noise sources using sound pressure - Precision methods for reverberation rooms ISO : Acoustic - determination of sound power levels of noise from air-terminal devices ; air terminal units; dampers and valves by measurement in a reverberation room. The data shown does not consider the attenuation given by the place of installation. This attenuation is normally included between 6 and 10dBa and is determined by the dimensions of the room, its shape and the arrangements of the furnishings within it. U08 Diffusion-vers xls U08-70

71 PERFORMANCE FOUR SLOTS KH KH... 4 Horizontal KH... 4 Vertical KH... 4 Pressure drop Aeraulic data measured in isothermic conditions for a one meter long diffuser in accordance with the international standard: ISO : Air distribution and air diffusion - Laboratory. Aerodynamic testing and rating of air terminal devices. L (m) horizontal distance in meters from the centre of the diffuser VL (m/s) maximum air speed in the air vain at a distance L H (m) distance from ceiling Vh (m/s) speed at height H KH... 4 Sound power Acoustic data measured in reverberating room for a one meter long diffuser in accordance with the international standard: ISO : Acoustic - determination of sound power levels of noise sources using sound pressure - Precision methods for reverberation rooms ISO : Acoustic - determination of sound power levels of noise from air-terminal devices ; air terminal units; dampers and valves by measurement in a reverberation room. The data shown does not consider the attenuation given by the place of installation. This attenuation is normally included between 6 and 10dBa and is determined by the dimensions of the room, its shape and the arrangements of the furnishings within it. U08 Diffusion-vers xls U08-71

72 PERFORMANCE FIVE SLOTOS KH KH... 5 Horizontal KH... 5 Vertical KH... 5 Pressure drop Aeraulic data measured in isothermic conditions for a one meter long diffuser in accordance with the international standard: ISO : Air distribution and air diffusion - Laboratory. Aerodynamic testing and rating of air terminal devices. L (m) horizontal distance in meters from the centre of the diffuser VL (m/s) maximum air speed in the air vain at a distance L H (m) distance from ceiling Vh (m/s) speed at height H KH... 5 Sound power Acoustic data measured in reverberating room for a one meter long diffuser in accordance with the international standard: ISO : Acoustic - determination of sound power levels of noise sources using sound pressure - Precision methods for reverberation rooms ISO : Acoustic - determination of sound power levels of noise from air-terminal devices ; air terminal units; dampers and valves by measurement in a reverberation room. The data shown does not consider the attenuation given by the place of installation. This attenuation is normally included between 6 and 10dBa and is determined by the dimensions of the room, its shape and the arrangements of the furnishings within it. U08 Diffusion-vers xls U08-72

73 MOUNTING INSTRUCTIONS KH Plenum Mountin bridges Diffuser insert the mounting bridges into the rear opening of the diffuser insert the diffuser into the plenum and tighten the screws U08 Diffusion-vers xls U08-73