Nozzle air diffuser DYSB

Transcription

1 Nozzle air diffuser DYSB DYSB is a range of nozzle air diffusers with adjustable nozzles for the setting of an optional diffusion pattern, intended for ceiling installation. The devices are documented without and with an insulated/uninsulated connection box ATTB. The slot height can be set in two positions: 0 or 25 mm. Quick Selection DYSB without slot, with insulated connection box ATTB-aaa-bbb ) at 50 Pa AirDiffuser Connection ATTB Air flow l/s (m 3 /h) at sound level inlet mm outlet mm 25 db 30 db 35 db DYSB DYSB (198) - DYSB (306) 103 DYSB (396) 129 = outside working area. DYSB without slot, with uninsulated connection box ATTB-aaa-bbb ) at 50 Pa AirDiffuser Connection ATTB Air flow l/s (m 3 /h) at sound level inlet mm outlet mm 25 db 30 db 35 db DYSB (108) 34 DYSB (158) 55 DYSB (227) 73 DYSB (328) 110 DYSB (425) 139 1) DYSB-100 can not be ordered with connection box Product Facts Good sound attenuation. Adjustable diffusion pattern. Choice of diffusion directions. Slots for larger air flows. Made from hot-dip galvanized steel sheet. Powder coated in white colour RAL sizes. Connection box Measurement and adjustment damper The damper is easily removable without changing the settings. Approved for cleaning. K-factors on measurement hoses. Product code example Nozzle air diffuser DYSA with connection box ATTB Fläkt Woods 4941EN Specifications are subject of alteration without further notice.

2 Air flow, zone length, throw, pressure drop, sound level Air diffuser DYSB with connection box, 4-way diffusion, without slot Zone and throw length s in the diagrams below refer to the air diffuser's connection in mm. DYSB ATTB DYSB ATTB DYSB ATTB DYSB ATTB DYSB ATTB For complete dimensioning details, please see Fläkt Woods product selection program. Fläkt Woods 4941EN Specifications are subject of alteration without further notice.

3 Air flow, zone length, throw, pressure drop, sound level DYSB ATTB DYSB ATTB DYSB ATTB DYSB ATTB DYSB without connection box, 4-way diffusion, without slot Conversion factors Throw l0,2 and zone length L are indicated for normal 4-way diffusion in a previous graph. When setting other diffusion patterns, throw and zone length are changed on the basis of conversion with the following factors to be multiplied with the values in the graph. Nozzle pattern for each size Diffusion Throw Zone length pattern I 0.2, m L, m Rotation 0,8 0,8 3-way 1,3 1,3 2-way 1,8 1,8 1-way 2,2 2,2 Fläkt Woods 4941EN Specifications are subject of alteration without further notice.

4 Acoustical data Sound power level DYSB w.o. slot and with insulated conn. box Correction of sound level K ok in db at DYSB ATTB DYSB ATTB DYSB ATTB ATTB DYSB w.o. slot and with uninsulated conn. box Correction of sound level K ok in db at DYSB ATTB DYSB ATTB DYSB ATTB DYSB ATTB ATTB DYSB w.o. slot and w.o. conn. box Correction of sound level K ok in db at Sound attenuation DYSB w.o. slot and with insulated conn. box Sound attenuation in db at DYSB ATTB DYSB ATTB DYSB ATTB ATTB DYSB w.o. slot and with uninsulated conn. box Sound attenuation in db at DYSB ATTB DYSB ATTB DYSB ATTB DYSB ATTB ATTB DYSB w.o. slot and w.o. conn. box Sound attenuation in db at Fläkt Woods 4941EN Specifications are subject of alteration without further notice.

5 Dimensions and weights Air diffuser DYSB S = 0 or 25 mm ØD B Ød1 1) Ød2 Weight [mm] [mm] [mm] [mm] [kg] , , , , , , , , , , , ,5 1) Opening in false ceiling Connection box ATTB Min 25 K 12 B L ØD1 H ØD2 ØD1 ØD2 H L B K Weight [mm] [mm] [mm] [mm] [mm] [mm] [kg] , , , , , , , , , , , , , , , , Fläkt Woods 4941EN Specifications are subject of alteration without further notice.

6 Execution and function, Material,product code Execution and function DYSB is a series of nozzle air diffusers with adjustable nozzles for the setting of an optional diffusion pattern, intended for ceiling mounting. The design of the nozzles gives very good mixing of the room air (high induction). The nozzles are rotatable and offer the possibility of changing the diffusion pattern and the diffusion direction for adaptation to the actual installation and diffuser position. The possibility of optimal air distribution is assured in this way, and large undertemperatures can be handled. The devices are shown both with insulated and uninsulated connection box ATTB. The measurement damper can be removed from room without changing the flow setting, for inspection and cleaning of the damper, the box and the duct. The connection box is approved for cleaning. The measurement hose from the measurement damper in the ATTB connection box is very easily accessible inside the diffuser. This facilitates measurement and balancing. The connection box can be connected directly to a duct bend but different k-factors are applicable for different installation alternatives. The nozzle diffuser is supplied with a separate diffuser plate and transfer box. Material and surface finish Both the diffuser and the connection box are made from hot-dip galvanized steel sheet. The diffusers are powder-coated for a high surface finish and good impact and scratch resistance. Standard colour White RAL Other colours on request. The nozzles are white. Product code Nozzle air diffuser (complete) DYSB-aaa-b (aaa) 100, 125, 160, 200, 250, 315 Execution (b) 1 = Nozzle diffuser plate under side 2 = Nozzle diffuser plate under and upper side (For tech nical data, please contact your nearest sales office) Connection box ATTB-aaa-bbb-c-1 Duct connection in mm (aaa) Diffuser connection in mm (bbb) Type (c) 0 = uninsulated ( , , , , ) 1 = insulated ( , , , ) Accessories Nozzle diffuser plate DYRZ-01-aaa air diffuser plate in mm (aaa) 250, 350, 450, 550, 625 nozzle diffuser plate nozzle diffuser and 315 Instructions Directions for installation, adjustment and care are set out in detail in our technical instruction which accompanies each product. The instruction is also accessible on Technical data and dimensioning For complete dimensioning details, please see Fläkt Woods product selection program. Contact our nearest sales office for further information. Fläkt Woods 4941EN Specifications are subject of alteration without further notice.