Accessories. Balancing plenum PRI For balancing & equalising the airflow and attenuating the duct noise

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1 Halton AWE/AWU Universal Grille Horizontal air supply, suitable also for exhaust Fixed front vanes, stable throw pattern with vertical 15 deflection: AWE, no deflection: AWU Adjustable rear vanes for horizontal deflection of the air jet Aluminium construction with elegant outlook Detachable grille enables cleaning of the grille and ductwork MATERIAL AND FINISHING PART MATERIAL FINISHING Continuous grilles available with modular construction Accessories Airflow adjustment damper Plenum options with measurement and adjustment functions Installation frame NOTE Frame Aluminium Anodised, Polyester-painted, White RAL % gloss, Mill finished Vanes Aluminium Anodised, Polyester-painted, White RAL % gloss, Mill finished Installation frame Plenum box / spigot Galvanised steel Galvanised steel Special colours available Epoxy-painting (100 %) available Special colours available Epoxy-painting (100 %) available ACCESSORIES ACCESSORY CODE DESCRIPTION Balancing plenum PRI For balancing & equalising the airflow and attenuating the duct noise Plenum BDR Plenum for duct connection (with or without attenuation material) Airflow measurement and adjustment unit MSM For supply installation Sound attenuation IN Mineral wool for the BDR plenum box. Polyester fiber for the PRI plenum box. Flow adjustment damper OD Aluminium opposite blade damper~for airflow adjustment Installation frame IF For installation without plenum Concealed screw fastening CC For installation with BDR plenum or IF frame 1

2 18 L H1 H2 48 AWE L1 DIMENSIONS NS L1 L2 H1 H2 AWU Function Supply air is supplied with vertical 15 angle deflection and with horizontal deflection (rear vanes) through the vanes into the space, mixing with room air in front of the grille. The flow pattern is adjusted by changing the angle of the adjustable rear vanes. Wall installation for horizontal supply or ceiling installation for vertical supply. In wall installations, the recommended distance from the ceiling is 200 mm, when the supply air is directed to the ceiling.(awe) The grille can also be used as an exhaust unit.(awu) 200x x x x x x x x x x x x x x x x x x With flow control damper OD total depth = 48 mm + 45 mm. Special dimensions In addition to standard sizes, other sizes can be specially ordered. The maximum size is 1500x500 mm (LxH). It is possible to have a continuous grille of modular design when the installation length is greater than 1500 mm. The maximum total length is 20 m. 2

3 Installation frame (IF) PRI balancing plenum BDR plenum box Installation Concealed screw fastening (option) The grille is connected to the circular duct using either a PRI balancing plenum or a BDR plenum or alternatively directly to the rectangular duct using the IF installation frame. Clips fastening (standard) The grilles are supplied with clips fastening as standard. Clips fastening is used with PRI, BDR and IF. Concealed screw fastening is possible when the grille is installed with an installation frame (IF) or a BDR plenum, though not with a PRI balancing plenum. Holes for screws are provided in the BDR. For ceiling installation concealed screw fastening is recommended. Visible screw fastening is not possible due to the reduced width of the frame (18 mm). Size of the installation hole is LxH when installation frame is used, and (L-5)x(H-5) without installation frame. 3

4 K factor for installations with different safety distances (D= duct diameter) ØD PRI/S >8xD min 3xD Adjustment In order to enable airflow adjustment and measurement of airflow rate it is recommended that you connect the diffuser to the BDR plenum or PRI balancing plenum equipped with the MSM module. The supply flow rate is determined by using the MSM measurement and adjustment module. Detach the grille and pass the tubes and control spindle through the grille. Measure the differential pressure using a manometer. The flow rate is calculated using the formula below x x x x x x x x x x x x x BDR >6xD min 3xD q v = k * p m Adjust the airflow rate by rotating the control spindle until the desired setting is achieved. Lock the damper position with a screw. Replace the tubes and spindle in the plenum and replace the grille. Airflow adjustment damper OD The airflow rate is adjusted by turning the damper blades behind the grille using a screwdriver. The measurement is carried out when grille is installed. 4

5 Pressure drop, throw pattern and sound data AWE or AWU, wall installation at a distance of 200 mm from the ceiling (with Coanda effect) 200x50, 200x100, 300x100, 400x x100, 600x100, 800x100, 600x x100, 800x150, 1000x150, 800x200, 1000x x150, 1500x150, 1200x2000, 1500x200 Note : When there is no coanda effect (installation greater than 200 mm from ceiling) the throw pattern must be multiplied by 0.7. For exhaust use, adjust supply data by adding + 5 db(a) and DPs= DPs x

6 Sound power level with OD damper Use of an OD opposite blade damper, will result in increased pressure loss. The resulting increase in sound level is computed from the selection chart value and the formula below: LpA = DLp + LpA Kp= Adjusted pressure drop Pressure drop in selection chart Example : ALE-1000x150 + OD/ALE qv = 300 l/s LpA = 31 db(a) without damper OD/ALE DPs= 50 Pa (desired pressure drop) Kp = 50/11 = 4.5 LpA = = 45 db(a) Throw length correction factor When the throw length is adjusted with the rear vanes, the actual throw length is obtained by multiplying the value obtained from the selection chart by the correction coefficient K1. L0.2 (a) = K1 x L0.2 The correction coefficient K1 is the average for the various grille sizes. Pressure drop correction factor Angle between vanes When the throw length is adjusted with the rear vanes, the actual pressure drop is obtained by multiplying the value obtained from the selection chart by the correction coefficient K2. DPs (a) = K2 x DPs The sound level increases when pressure drop is increased. The correction coefficient K2 is the average for the various grille sizes. Angle between vanes 6

7 SOUND LEVEL DATA, SUPPLY AWE-AWU qv DPst DPtot F (Hz) LpA NR NC (l/s) (m 3 /h) (Pa) (Pa) [db(a)] 200x x x x x x x x x x x x x x x x x LpA values presented with room attenuation 4 db (red 10m 2 - sab). When using room attenuation 8 db (red 25m 2 - sab): LpA - 4dB. NR/NC noise criteria 7

8 Servicing Remove the grille by gently drawing it out by the frame. Use a screwdriver if necessary. Clean the parts by wiping then with a damp cloth. Push the grille back into place so that the clips lock (or fix by tightening the concealed screws). Product Code AWE-L-H AWU-L-H L = Length 200,+1,..,20000 Option: with balancing plenum PRI or BDR + MSM Remove the measurement and adjustment module by gently pulling the shaft (NB. not the control spindle or measurement tubes!). Wipe the parts with a damp cloth, instead of immersing in water. Reassemble the measurement and adjustment module by pushing the shaft until the module meets the stopper. Push the grille back into place so that the clips lock. Suggested Specifications H = Height 50,+1,..,500 Specifics and accessories FS = Fastening CL Clips CC Concealed screw fastening FI = Finishing AN Anodised MF Mill finished PN Painted The grille shall have horizontal fixed vanes with a 15 angle deflection:awe, no deflection: AWU and vertical adjustable rear vanes, and an 18 mm wide flat frame, anodised or epoxy-painted with a white (RAL 9010) colour. Flow pattern shall be adjustable by rear vanes. CO = Colour W X N Code example White Special colour No painting Option 1 The grille shall be connected to the ductwork using a plenum with mineral wool as sound insulation material. Option 2 The grille shall be connected to the ductwork using a balancing plenum, which comprises polyester fibre with a washable surface as sound attenuation material. The plenum shall comprise an airflow measurement and adjustment unit. The grille shall be removable in order to provide access to the measurement and adjustment module in the plenum. ALE , FS=CL,FI=AN,CO=N Sub products BDR Plenum PRI Plenum IF Installation frame (Grilles) OD Opposed blade damper (Grilles) 8