Slot diffusers. Slot diffusers, Round duct diffusers. Slot diffusers. Slot diffusers LD-13, LD-14

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1 , Round duct diffusers D-, D- Application D- and D- slot diffusers are designed for the supply of air in rooms with floor to ceiling heights of.5 to m for supplying either cold or warm air, in particular in applications where air conditioning comfort demands are stringent. Due to their high induction rate and rapid decrease of temperature difference, these diffusers are also suitable for variable systems. AI Description D- and D- slot diffusers are designed in,, and -slot versions. Diffuser face plate consists of anodised aluminium sections with built-in cylindrical deflectors made of plastics. Deflectors allow continuos adjustment of d air direction within the 0 range as well as control of supply air flow rate. The cylindrical deflectors also allow full shutting of the diffuser. The slot diffuser plenum box is made of galvanised sheet steel and has a flow rate control built in its inlet spigot, to allow fine adjustment of the desired air flow rate. RA 900 CD B 0 D- F 9. Control schematic of the spigot volume control φ D H H a A E 7 D- F D- F A 7 E 5. Plenum box. Inlet spigot. Volume control. Main section 5. Cylindrical deflector. Side lateral section 7. Connecting section. Outside insulation A 7 E 0

2 , Round duct diffusers Slot diffuser types Single-slot (designation D-,/) Two slots (designation D-,/) Three-slots (designation D-,/) Four-slots (designation D-,/) D- O, D- O Narrow version The narrow slot diffuser differs from the conventional slot diffuser construction as regards its mounting to the ceiling or wall. The conventional slot diffuser has a -cross-section mounting sleeve which remains visible and may, in certain applications, interfere with aesthetic requirements. The narrow design has eliminated this deficiency as well as introduced improved structural rigidity due to its reinforced sleeve. The product is thus suitable for installation in cooling suspended ceilings as well. D-/ D-/ D- O/ D- O/ D- O/ D- O/ D-/ D-/ D-/ D-/ D-/ D-/ D- O, D- O D- O/ D- O/ D- O/ D- O/ D-, D- VENTIATING GRIES, VENTIATING VAVES CIRCUAR DIFFUSERS, SQUARE DIFFUSERS SWIR DIFFUSERS, VARIABE SWIR DIFFUSERS SOT DIFFUSERS, ROUND DUCT DIFFUSERS AIR DISPACEMENT UNITS Standard lenghts D- and D- slot diffusers are available in standard lengths ranging from =00 to =00 mm, with a 00 mm step. In cases where longer diffusers are required, they can be joint together by means of (rail-type) connecting plates. Plenum boxes are also available in standard lengths ranging from 00 mm to 00 mm. Special orders On customer s request slot diffusers can be made in other dimensions. End seals and longitudinal sections are painted in any RA scale colour according to the customer s request. As standard, cylindrical deflectors are black or white, on the customer s request, they can be coloured in any RA scale colour. Non-standard colours and extra components are to be ordered separately. D- No. of slots H H B A E F D- No. of slots H H B A E F SUPPY AIR NOZZES EXTERNA EEMENTS AIR FOW CONTRO UNITS SOUND ATTENUATORS, SOUND ATTENUATING OUVRES

3 , Round duct diffusers Number and diameter of inlet spigots 00 do do 0 00 do 00 Number and diameter of inlet spigots No. of slots D- D- D- D- D- D- x 9 x x 9 x x x x x 5 x x x x 5 x 5 x 9 x x 5 x 5 x 9 x 9 x x 5 x 9 x 9 x Position of inlet spigots Number of inlet spigots Standard length Position of spigots J / / J / 00 0 J = J = 00 Slot diffuser face plate designs Slot diffuser face plates are made of linear or angular ended sections, which allow the diffusers to be joined at different angles. Angular ended sections are not fitted with air direction controls. angle Cylindrical deflectors Cylindrical deflectors are an important components of a slot diffuser. They allow adjustment of both air flow rate and direction. Cylindrical deflectors are made of plastics. As standard, they are black or white. End seals End seals are components of the diffuser face plate. They are available in two designs: as an angle piece (E on both ends, ET on one end only) or plates (F on both ends, FT on one end only). The connecting strip-section has no end angle pieces or plates seals (designation T). Joining diffusers together in length and width Joining in width (into diffusers with multiple slots) requires special strip sections, while joining in length requires connecting plates (the total length of combined diffusers is not limited).

4 , Round duct diffusers Fixing of the plenum box onto D-, D- diffusers With self-tapping screws (designation U) With spring clamps (designation S) With a cross-member (designation Z) Fixing with self-tapping screws (U) Fixing with spring clamps (S) Fixing with a cross-member (Z) VENTIATING GRIES, VENTIATING VAVES CIRCUAR DIFFUSERS, SQUARE DIFFUSERS Installation methods With a threaded bar (designation R) With a wire (designation R) With suspension brackets on the plenum box (designation P) With special fixing elements (designation R) With springs (designation N) SWIR DIFFUSERS, VARIABE SWIR DIFFUSERS SOT DIFFUSERS, ROUND DUCT DIFFUSERS Installation with a threaded bar (R) Installation with wire (R) Installation with suspension bracket (P) AIR DISPACEMENT UNITS SUPPY AIR NOZZES Installation with special fastening elements (R) Installation with springs into ducts (N) SOUND ATTENUATORS, SOUND ATTENUATING OUVRES EXTERNA EEMENTS AIR FOW CONTRO UNITS

5 , Round duct diffusers Types of air D- a b Discharge direction Min. air flow rate Max. air flow rate Standard (left, right) Standard (right) c d 0 Discharge angle D- Standard (left) Standard (vertical) Discharge direction Min. air flow rate Max. air flow rate e f g Discharge angle Air jet angle 0 (left, right) Air jet angle 0 (right) Air jet angle 0 (left) Slot diffuser with actuator controlled direction with actuator controlled direction are suitable for summer-winter air supply applications. The desired direction of air jet is achieved by means of an electric actuator which moves a slider. Manual adjustment is therefore not necessary. Compared with standard slot diffusers, air flow rate is reduced by %. There are two options for the Belimo electric motors: H A-SR00 and H-A-MP00. The first operates at V AC/DC, the second within the range of 0-0V or 0-V. Their travel distance is 00 mm, for which s is required. Pogled Top view z vrha Component parts. Slot diffuser. Deflector. Electric actuator In case the angle is to be adjustable by means of an electric actuator (winter-summer application), this requirement shall be specified in the ordering form. * Motor version on customer s request. Every second row. Adjustment of deflectors for warm air supply Every second row. Adjustment of deflectors for cold air supply

6 , Round duct diffusers Wall mounted slot diffusers D-S and D-S Application Designed for installation in plasterboard walls with a thickness of 00 mm or more. These are used for the supply of air in rooms with ceiling heights of.5 to m. Suitable for cooling as well as for heating, especially in rooms with elevated comfort requirements. They may also be used to the air from the room, and enable a high level of induction. Description Inlet or outlet connection may be in the plenum box above the ventilated room or on the other side of the wall. On the diffuser side, the plenum box is sound-insulated, lowering the level of noise emissions in the ventilated room. Component parts. front chamber connection (KF). rear chamber connection (KB). slot diffuser D-S or D-S. sound insulation. plenum box Plenum box Despite its low height, it assures sufficient air distribution in the direction from the plenum box connection to D- or D- across the entire length of the diffuser. It can be installed in plasterboard walls with a minimum thickness of 00 mm. Design allows installation and placement on metal profile brackets of internal plasterboard walls. Installation in the plasterboard Front plenum box connection Front plenum box connection allows air inlet and outlet above the suspended ceiling of the ventilated room. This assures a certain competitive advantage, as there is no need to adjust the duct network to the diffuser placement. Rear plenum box connection Rear side connection allows air inlet and outlet through the neighboring room. Due to the height of the connector according to D- o D-, the duct network can be placed above the suspended ceiling. Dimensions B B Sound insulation Sound insulation has enhanced absorption properties and prevents the spreading of emissions from the duct network into the ventilated room. The insulation placement effectively reduces internal noise generation in the entire plenum box, particularly on the location of the inlet jet through the connection. H M H B H H H B B B ΦD D-S/ D-S/ D-S/ D-S/

7 , Round duct diffusers Fast selection diagram: WA < 5 db(a) Technical specifications for one-slot diffuser, per meter of lenght, at horizontal A(m²) Q(m³/h) WA (db) D D Nr. Število of slots rež D- D Q(m /hm) Definition of symbols A x x A x Q Air flow rate to length x (m) distance to the wall H (m) Room height (m) Throw distance (=H+x) V (m/s) Air velocity at the throw distance Δt z (K) Temperature difference between the supply and room air Δt (K) Difference between the core and room air temperature Δp (Pa) Pressure drop WA (db(a)) Sound power level v H (m/s) Air velocity at the distance H A, B (m) Distance between diffusers, in length and in width H (m) Throw distance H VH th V t V t H VH th V t

8 , Round duct diffusers Air velocity diagrams for D-, at different throw distances One or two sided horizontal VENTIATING GRIES, VENTIATING VAVES H (m).. D- / D- / D- / D- / D- / D- / D- / D- / CIRCUAR DIFFUSERS, SQUARE DIFFUSERS 0. V H (m/s) V (m/s) (m) SWIR DIFFUSERS, VARIABE SWIR DIFFUSERS SOT DIFFUSERS, ROUND DUCT DIFFUSERS Alternate sided horizontal V H (m/s) H (m).. D- / D- / D- / D- / V (m/s) D- / D- / D- / D- / AIR DISPACEMENT UNITS SUPPY AIR NOZZES EXTERNA EEMENTS (m) AIR FOW CONTRO UNITS SOUND ATTENUATORS, SOUND ATTENUATING OUVRES 9

9 , Round duct diffusers Air velocity diagrams for D-, at different throw distances One or two sided horizontal H (m). / /.. D- / D- / V H (m/s) V (m/s) V (m/s) (m) (m) (m) Alternate sided horizontal H (m)....5 D- / D- /.5 D- / D- / V H (m/s) V (m/s) V (m/s) (m) (m) 90

10 t, Round duct diffusers Sound power level and pressure drop D / D / p (Pa) w A (db(a) ) Q (m /h) Correction factors applicable to D-/ p t (Pa) 0 00 w A (db(a) ) Q (m /h) Correction factors applicable to D-/ VENTIATING GRIES, VENTIATING VAVES CIRCUAR DIFFUSERS, SQUARE DIFFUSERS SWIR DIFFUSERS, VARIABE SWIR DIFFUSERS SOT DIFFUSERS, ROUND DUCT DIFFUSERS =0 x x. x 0.7 x. =000 x x.0 x 0.5 x.0 =0 x x 5. x 0. x.7 =00 x x 7.7 x 0. x 5. Q = m³/h = 000 mm Δp t = Pa (vertical; opened) Δp t = x.0 =. Pa (vertical; closed) Δp t = x 0.5 =.9 Pa (horizontal; opened) Δp t = x.0 =. Pa (horizontal; closed) WA = db(a) =0 x x.9 x 0. x.79 =000 x x 5.9 x 0.70 x 5. =0 x x 9. x 0.5 x.7 =00 x x.0 x 0.7 x.99 Q = m³/h = 0 mm Δp t = Pa (vertical; opened) Δp t = x.9 =.0 Pa (vertical; closed) Δp t = x 0. =.9 Pa (horizontal; opened) Δp t = x.79 = 9. Pa (horizontal; closed) WA = 0 db(a) SOUND ATTENUATORS, SOUND ATTENUATING OUVRES AIR DISPACEMENT UNITS SUPPY AIR NOZZES EXTERNA EEMENTS AIR FOW CONTRO UNITS 9

11 t t, Round duct diffusers Sound power level and pressure drop D / D / p (Pa) w A (db(a) ) Q (m /h) p (Pa) 0 00 w A (db(a) ) Q (m /h) Correction factors applicable to D-/ =0 x x.7 x 0. x. =000 x x.5 x 0.5 x7.59 =0 x x. x 0. x. =00 x x. x 0. x.9 Correction factors applicable to D-/ =0 x x.0 x 0.70 x.9 =000 x x.07 x 0.7 x 9.7 =0 x x.5 x 0.7 x.7 =00 x x 7.07 x 0.5 x.7 Q = 00 m³/h = 000 mm Δp t = 5 Pa (vertical; opened) Δp t = 5 x.5 = 7. Pa (vertical; closed) Δp t = 5 x 0.5 =. Pa (horizontal; opened) Δp t = 5 x 7.59 =. Pa (horizontal; closed) WA = 9 db(a) Q = 00 m³/h = 0 mm Δp t = 5 Pa (vertical; opened) Δp t = 5 x.0 = 07. Pa (vertical; closed) Δp t = 5 x 0.70 =.5 Pa (horizontal; opened) Δp t = 5 x.9 = 0. Pa (horizontal; closed) WA = db(a) 9

12 p (Pa) t t, Round duct diffusers Sound power level and pressure drop D / w A (db(a) ) Q (m /h) Correction factors applicable to D-/ 000 =0 x x. x 0.7 x. =000 x x. x 0. x. =0 x x 5.0 x 0. x 5. =00 x x 7.7 x 0.9 x 7.07 Q = 00 m³/h = 000 mm Δp t = Pa (vertical; opened) Δp t = x. =. Pa (vertical; closed) Δp t = x 0. =.0 Pa (horizontal; opened) Δp t = x. = 07.0 Pa (horizontal; closed) WA = db(a) 0 00 D / p (Pa) w A (db(a ) ) Q (m /h) Correction factors applicable to D-/ =0 x x. x 0.5 x.59 =000 x x. x 0.9 x 7.9 =0 x x 5. x 0. x. =00 x x. x 0. x.70 Q = 00 m³/h = 0 mm Δp t = 7 Pa (vertical; opened) Δp t = 7 x. = 99. Pa (vertical; closed) Δp t = 7 x 0.5 =.9 Pa (horizontal; opened) Δp t = 7 x.59 = 7.7 Pa (horizontal; closed) WA = db(a) SOUND ATTENUATORS, SOUND ATTENUATING OUVRES VENTIATING GRIES, VENTIATING VAVES CIRCUAR DIFFUSERS, SQUARE DIFFUSERS SWIR DIFFUSERS, VARIABE SWIR DIFFUSERS SOT DIFFUSERS, ROUND DUCT DIFFUSERS AIR DISPACEMENT UNITS SUPPY AIR NOZZES EXTERNA EEMENTS AIR FOW CONTRO UNITS 9

13 t t, Round duct diffusers Sound power level and pressure drop D / D / 0 0 p (Pa) w A (d B(A ) ) p (Pa) 00 w A (db(a) ) Q (m /h) Correction factors applicable to D-/ =0 x x. x 0. x.7 =000 x x. x 0.9 x.9 =0 x x.9 x 0. x.7 =00 x x.7 x 0. x. Correction factors applicable to D-/ =0 x x. x 0. x. =000 x x.0 x 0.5 x. =0 x x. x 0. x. =00 x x 7.79 x 0.0 x 9. Q = 00 m³/h = 000 mm Δp t = Pa (vertical; opened) Δp t = x. = 9.5 Pa (vertical; closed) Δp t = x 0.9 =. Pa (horizontal; opened) Δp t = x.9 =. Pa (horizontal; closed) WA = db(a) Q = 00 m³/h = 0 mm Δp t = 70 Pa (vertical; opened) Δp t = 70 x. = 9. Pa (vertical; closed) Δp t = 70 x 0. = 9. Pa (horizontal; opened) Δp t = 70 x. = 70. Pa (horizontal; closed) WA = db(a) 9