IBIS. Duct diffuser with discs for supply air QUICK FACTS

Transcription

1 Duct diffuser with discs for supply air QUICK FACTS 0 flexible distribution pattern Suspended installation Easy installation Modular length: 00 mm Standard colour White RAL alternative standard colours -- Other colours upon request AIR FLOW - SOUND PRESSURE ROOM (Lp0A) *) db(a) 0 db(a) db(a) Size l/s m /h l/s m /h l/s m /h *) Lp0A = Sound pressure incl. A-filter with db room attenuation and 0 m room absorption area.

2 Contents Technical description... Materials and finish... Customizing... Project planning... Commissioning... Accessories... Maintenance... Environment... Technical data... supply air diffuser only... + Ca Throws... 7 Airflow - Pressure drop - Sound level... 8 Diagrams for diffuser only... 9 Diagrams for with control unit C... 9 Dimensions and weights... Ordering key... Specification text... Swegon reserves the right to alter specifications. 0800

3 Technical description Design duct air diffuser with discs has a diameter that is compatible with standard duct sizes. is equipped with aerodynamically designed discs that have a high induction capacity. The 60 mm dia. and 00 mm dia. duct air diffusers are equipped with Swegon s small discs. The standard duct diffuser is available in a number of sizes as shown in Figure as well as in the Dimensions and weights table. There is an aluminium profiled bracket along the top of the duct. The bracket runs longitudinally and serves as a flexible mounting bracket for hanging the duct diffuser from the ceiling. Materials and finish The duct air diffuser with discs is made of galvanized sheet steel and is painted in Swegon s white standard colour, RAL 900/NCS S 000-N. The discs are made of recyclable environmentally friendly plastic (polypropylenepp). The air diffusers are also available in alternative standard colours: RAL 707 dusty grey, RAL 9006 white aluminium, RAL 900 jet black, RAL 9007 grey aluminium and RAL 900 white. Customizing In addition to the size specified, the duct diffusers are available in alternative sizes, number of discs, etc. For more info, get in touch with your nearest Swegon representative. Project planning The discs are rotatable through 60. This makes it possible to achieve an infinite number of horizontal or vertical air diffusion combinations without altering the airflow, sound level or pressure drop. The duct diffusers are well-suited for installation in the junction of a ceiling with a wall without reducing its flow capacity. The discs on the back side are then set for upward air discharge enabling the duct air diffuser to operate as a air diffuser with one-way air discharge. See Figures and for examples of principle air diffusion patterns. Maintenance The air diffuser can be cleaned, if necessary, using lukewarm water with dishwashing detergent added or by vacuum cleaning using a brush nozzle. Environment The Declaration of Construction Materials is available from Methodic Errors Type of obstruction Length of straight duct (L) upstream of the C upstream of the C For m = % For m = One 90 bend. x Ød x Ød Two 90 bends in the same plane. x Ød x Ød Two 90 bends in aligment at right angles to one another. x Ød x Ød One damper. 6 x Ød x Ød One T-piece. x Ød x Ød m = methodic error. Method for measurement of airflows in ventilation Installations. Figure. -way air discharge, P = 00 mm. Normal hanger length is 00 mm. The smallest permitted hanger length is 00 mm which generates slightly increased throw. Commissioning An C (see under accessories) or a flow measuring damper installed in the duct system upstream of the duct diffuser is recommended for commissioning and airflow measurements. The Methodic errors table and Figure describes requirements on straight duct lengths for upstream obstructions. Figure. -way air discharge, P = 00 mm. Accessories D: Duct section of the same design as but without discs.*) C: Sound attenuating measurement and control unit.*) B: and 90 bend painted white.*) T: T-piece painted white.*) *) Available for sizes For 00 and 60, standard accessories are recommended. Figure. Project planning Swegon reserves the right to alter specifications.

4 Installation The duct diffuser is suspended by hangers from the ceiling. The air diffusers can be installed as in the following examples: Phase A While the duct section () is lying on the floor, insert a size M-8 bolt () approx. 00 mm from the end on the longitudinal profiled bracket (). Do the same in the other end of the profiled bracket. Secure the bolts in the profiled bracket with long nuts (). Screw a threaded rod () of appropriate length into each long nut. Secure the Z-profiled brackets (6) with bolts to the ceiling to serve as mounting brackets for the duct-shaped air diffusers with discs. Hang the duct air diffuser with discs () in the Z-profiled brackets (6) and join it together with the connecting supply air duct (7) using the standard duct joint (8) included in the supply. A Adjust the duct diffuser using the nuts (9) until the air diffusers are horizontal and have the correct height above the floor. Fit the white plastic covering supplied () onto the threaded rod. Phase B Remove the end cover () and move it to the outmost section if more sections are to be installed. Press the distribution joint supplied (0) in the mounted section of the duct diffuser (). Insert the guide pin () in the free end of the installed section. Repeat phase A to install the next section (). Now it is sufficient to use one bolt in the other end when the second duct diffuser section is to be secured across the joint to the section that you ve already installed. Secure the distribution joint (0) with self-tapping screws in the sections. Repeat Phase B for last section. Phase C Install the inactive D duct sections () in the same way as the duct air diffuser sections with discs. Note the use of supplied joints (8) and distribution joints (0) included in the supply. In all deliveries, the end cover () supplied is already fitted to the first section. The end cover is always moved to the last section (except when only 00 mm long ducts are installed), see Phase B in Figure. B I.a. I. Position on delivery II. b, II. Position after reassembly and installation C Figure. Installation options: A, B and C. components Size Sections Standard joint Distribution joint End cover Set with installation accessories -aaa-00-c - -aaa-000-c -aaa-00-c D-aaa Swegon reserves the right to alter specifications. 0800

5 Technical data Sound level db(a) applies to rooms with 0 m equivalent sound absorption area ( db room attenuation). Throw l 0. is measured for isothermal air discharge and applies to installation 00 mm from the ceiling. A max. permissible temperature below room temperature of 8 C is recommended for standard setting of the discs. The recommended highest permissible air velocity in the duct upstream of the air diffuser is - m/s. For calculating the air stream propagation, air velocities in the occupied zone, or sound levels in rooms with other dimensions, we refer to our ProAir Web and ProAc calculation programs at Acoustic data supply air diffuser only Sound power level, L W (db) Table K ok Size Mid-frequency (Octave band) Hz Tol. ± Sound attenuation DL(dB) Table DL Size Mid-frequency (Octave band) Hz Tol. ± 0800 Swegon reserves the right to alter specifications.

6 + Ca 00 Sound power level, L W (db) Table K OK Size a + Mid-frequency (Octave band) Hz Ca Not applicable to control unit with sizes 00 and 60) Sound attenuation DL (db) Table DL Size a + Mid-frequency (Octave band) Hz Ca Not applicable to control unit with sizes 00 and 60) 6 Swegon reserves the right to alter specifications. 0800

7 Throws -way air discharge, short The throws for -way air discharge, short, are specified on the following pages in the sizing diagram. Example: IBD produces a flow of 60 l/s at 0 db(a). A throw of. m is specified. -way air discharge, long To calculate the throw for "-way air discharge, long" multiply the throw in the relevant diagram by.7. Example: IBD produces a flow of 60 l/s at 0 db(a). A throw of. m is specified. The throw for -way air discharge will then be:.7 x. m = 7. m -way air discharge To calculate the throw for -way air discharge, multiply the throw in the relevant diagram by.0. Example: IBD produces a flow of 60 l/s at 0 db(a). A throw of. m is specified. The throw for -way air discharge will then be:.0 x. m = 8.6 m For the calculation of throws for air that is below or above room temperature, refer to our ProAir air diffuser selection program which is available at Figure. -way air discharge with short throw. All the discs are set for discharging air upward toward the aluminium strip. Correction factor for hanger lengths Throw for different hanger lengths according to table below. Throw illustrated in catalog diagrams refers to hanger length A = 00 mm. l 0, = K P x l 0, standard Hanger length A K P 00 mm 0,8 00 mm,0 00 mm, 0 mm *), *) Direct installation against ceilings can only be done for -way air discharge, according to figure 6. Figure 6. -way air discharge with long throw. The uppermost row of discs on both sides of the aluminium strip should be set for downward air discharge. Figure 7. -way air discharge toward a wall. The uppermost row of discs on the air diffuser half facing the room should discharge air downward; the other discs should discharge air upward Swegon reserves the right to alter specifications. 7

8 Sizing diagram Airflow - Pressure drop - Sound level The diagram should not be used for commissioning. The db(a) values are for rooms with normal acoustic absorption ( db room attenuation). The db(c) value is normally 6-9 db higher than the db(a) value. For more accurate calculations, see the calculation template in the Technical Information section of the catalogue under Acoustic Data all db(a) l/s all ' m /h 0 0 db(a) l/s m /h db(a) l/s m /h 8 Swegon reserves the right to alter specifications. 0800

9 Diagrams for diffuser only db(a) db(a) l/s m /h l/s m /h 00 0 l 0, m m l 0, Diagrams for with control unit C C C db(a) db(a) l/s m /h l/s m /h l 0, m l 0, m 0800 Swegon reserves the right to alter specifications. 9

10 C C db(a) db(a) l/s m /h l/s m /h l 0, m l 0, m C C db(a) db(a) l/s m /h l/s m /h l 0, m l 0, m C C db(a) db(a) l/s m /h l/s m /h l 0, m l 0, m 0 Swegon reserves the right to alter specifications. 0800

11 C C db(a) db(a) l/s m /h l/s m /h l 0, m l 0, m C C db(a) db(a) l/s m /h l/s m /h l 0, m m l 0, C C db(a) db(a) l/s l/s m /h m /h 0 l 0, m 0 l 0, m 0800 Swegon reserves the right to alter specifications.

12 C C db(a) db(a) l/s l/s m /h m /h 0 l 0, m 0 l 0, m C C db(a) db(a) 0, l/s m /h l/s m /h 0 l 0, m 0 l 0, m C C db(a) db(a) l/s m /h l/s m /h 0 l 0, m 0 l 0, m Swegon reserves the right to alter specifications. 0800

13 Dimensions and weights Size ØD L * m n Weight (kg) , Figure 9. C* ) , * Dimensions without end cap and connection nipple m = number of duct modules n = number of discs/total length ØD Figur 0. C* ). Figure. B* ). mm 0 End cap, dimension for protruding part when assembled 0 Connection nipple, dimension show the increase when assembeld Figure 8. and D. Figure. T* ). *) Available for sizes 60-00, not for sizes 00 and Swegon reserves the right to alter specifications.

14 Disc settings Figure. Arrangement of the discs. Swegon reserves the right to alter specifications. 0800

15 Ordering key Product Duct air diffuser with discs For suspended installation from the ceiling Version Size: 60, 00, 0,, 00, 00 and 60 Nom. length: 00, 000, 00* ) Number of disc rows:,, 6, 8, 0, and 6. Accessories a -aaa -bbbbb -c Duct section. Nom. length of 00 mm D a -bbb Version Size: 60, 00, 0, and 00 Sound attenuating measurement and control unit Version Size: 60, 00, 0,, 00 C a -bbb Specification text TD XX Swegon s type circular duct air diffuser with discs for suspended installation from a ceiling with the following functions: 0 flexible air distribution pattern Individually adjustable discs made of environmentally friendly plastic (polypropylene-pp) 00 mm long modules Duct joints and end cover Powder paint sprayed and baked white finish Size: a xx items Accessory: Duct section,,00 mm: Da - xx items Duct bend B a -aa -bbb Version Variant:, 90 Size: 60, 00, 0,, 00 T-piece T a -aaa Version Size: 60, 00, 0,, 00 *) 00, 000 for 60, 00, 00 and 60 00, 000, 00 for Swegon reserves the right to alter specifications.