Halton ALE/ALU Universal Grille • Horizontal air supply, also suitable for exhaust • Fixed vanes, stable throw pattern with vertical • Airflow adjustment damper • Plenum options with measurement and adjustment • Aluminium design with elegant appearance • Detachable grille allows cleaning of the grille • Installation frame and ductwork • Continuous grilles available with modular design MATERIAL AND FINISHING PART Anodised, Polyester-painted, White RAL 9010 50% gloss, Mill finished Special colours available Epoxy-painting (100 %) available Anodised, Polyester-painted, White RAL 9010 50% gloss, Mill finished Special colours available Epoxy-painting (100 %) available Installation frame Galvanised steel Galvanised steel ACCESSORIES ACCESSORY Balancing plenum For balancing & equalising the airflow and attenuating the duct noise Plenum for duct connection (with or without attenuation material) Airflow measurement and adjustment unit Sound attenuation Mineral wool for the BDR plenum box. Polyester fiber for the PRI plenum box. Flow adjustment damper Aluminium opposite blade damper for airflow adjustment Installation frame For installation without plenum Concealed screw fastening For installation with BDR plenum or IF frame ALE/ALU - Univ

vanes into the space mixing with room air in front of deflection:ALE, without deflection: ALU through the Supply air is supplied with a 15° vertical angle Wall installation for horizontal supply or ceiling With flow control damper OD total depth = 35 mm + installation for vertical supply. In wall installations the recommended distance from the ceiling is 200 mm when the supply air is directed Special dimensions to the ceiling. The grille can also be used as an exhaust unit. In addition to standard sizes, other sizes can be specially ordered. The maximum size is 1500x500 mm (LxH). It is possible...

Concealed screw fastening (option) Installation 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) 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. The grilles are supplied with clips fastening as Holes for screws are provided in the BDR. standard. Clips fastening is used with PRI, BDR and IF . For ceiling installation concealed screw...

K factor for installations with different safety distances 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. Adjust the airflow rate by rotating the control spindle until the desired setting...

Pressure drop, throw pattern and sound data ALE or ALU, wall installation at a distance of 200 mm from the ceiling (with coanda effect) Selection example : Note : Requirements : qv = 300 l/s Selection : When there is no coanda effect (installation greater than 200 ALE or ALU-1000x150 mm from ceiling) the throw pattern must be multiplied by 0.7 LpA =s 35 dB(A) LpA = 31 dB(A) For exhaust use, adjust supply data by adding + 5 dB(A) and ALE/ALU - Universal Grille

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 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 = 31 + 14 = 45 dB(A) ALE/ALU - Universal Grille 6

ALE/ALU - Universal Grille 7 SOUND LEVEL DATA, SUPPLY

Product Code 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). 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 Reassemble the measurement and adjustment Concealed screw fastening module by pushing the shaft until the module meets the stopper....