01/13 - 2 Construction subject to change. Version: 13.03.2020 No return possible!

Ventilation grille Model AL Description The ventilation grille type AL is suitable for use in supply and return air installations. For air deflection, horizontal or vertical pivoting air deflection blades are attached to the front side. Frame and blades made of natural anodised aluminium or aluminium painted to a RAL colour. Assembly parts made of galvanised sheet steel. Standard fastening by means of concealed mounting. At an extra charge, a plenum box can be mounted (only available without hit-and-miss damper). The damper in the spigot of the plenum box (at an extra charge) serves for easy...

Ventilation grille Model AL Models and dimensions Dimensions AL-01 With intermediate rail for lengths from 625 (see page 9) All models are based on basic type AL-01 AL-02 All models are based on basic type AL-11 AL-12 Available sizes All combined lengths and heights available! Other sizes available on request. Construction subject to change.

Ventilation grille Model AL Dimensions of accessories If KBS is <øD+30, an offset box will be manufactured. KB2= øD (-S0)+30 Plenum box (-AK-33) Spigot arrangement - Lateral spigot (-S1, standard) - Spigot from above (-S0) - Spigot front side (-S4) Grilles cannot be fitted with a hit-and-miss damper if a plenum box is attached, i.e., it can either be fitted with a hit-and-miss damper or a plenum box. With spigot front side (-S4) With lateral spigot (-S1) If KBS is <øD+30, an offset box will be manufactured. KB2= øD (-S4)+30 Detail X Concealed plates can be bent outwards, if necessary. With spigot...

Ventilation grille Model AL Number of spigots on AK-33 S4-1 (only possible with 1 spigot) Minimum height KHS with spigot position -S1 / -S4: spigot diameter + 87 mm Minimum width KBS and KB2 with spigot position -S0 / -S4: Spigot diameter + 30 mm 01/13 - 6 Construction subject to change.

Insulation for plenum box AK internal (-Ii) Installation frame (-ER1), with wall anchors (-ER2) L-2 Length L < 825 mm = 4 wall anchors Length L > 825 mm = 6 wall anchors Construction subject to change.

Ventilation grille Model AL Mounting frame for band design 2-part, BL < 2025 mm Length of band -2 Mounting frames for grille bands are supplied with plug-in connections. Assembly webs are additionally attached, they can easily be removed with a turn, once the grille is walled in. All mounting frames are supplied without wall anchors as standard. Wall anchors available at an extra charge only (-ER2). Construction subject to change.

Ventilation grille Model AL AL as band The ventilation grille types AL-11,-12,-15 and -16 are available as ventilation bands. Ventilation bands can be supplied only with screw mounting (SM). Ventilation grille band, divided into 2 parts for band length BL < 2025mm Indentation for raised countersunk head tapping screw according to DIN ISO 7051 pitch 3.9 End piece Length of band multi-part for a length of band BL > 2025 mm Indentation for raised countersunk head tapping screw according to DIN ISO 7051 pitch 3.9 End piece < 425 mm = 4 raised countersunk head tapping screws End piece > 425 mm = 6...

Ventilation grille Model AL Fastening methods Screw mounting (-SM) The ventilation grilles of the series AL can be supplied with screw mounting (-SM) only on special request. Concealed mounting (-VM) Unless stated otherwise, the ventilation grilles of the AL series are delivered with concealed mounting (VM). Clamp fastening (-KB) is standard for concealed mounting without installation frame. The concealed mounting VM is only available with an installation frame or a plenum box. The installation frame must be ordered separately. From height H = 225 two attachments per side. VM only available in...

Ventilation grille Model AL Technical data Pressure loss and noise level AL (supply air) AL with hit-and-miss damper (supply air) AL with hit-and-miss damper (return air) Hit-and-miss damper open in % 01/13 - 11 Construction subject to change. Version: 13.03.2020 No return possible!

Return air Face area Supply and return air (m2) Construction subject to change.

Ventilation grille Model AL Maximum end velocity of jet Supply air without coanda effect Supply air with coanda effect 01/13 - 13 Construction subject to change. Version: 13.03.2020 No return possible!

Ventilation grille Model AL Jet path Supply air without coanda effect Heating Cooling 01/13 - 14 Construction subject to change. Version: 13.03.2020 No return possible!

Ventilation grille Model AL Critical throw Supply air with coanda effect 01/13 - 15 Construction subject to change. Version: 13.03.2020 No return possible!

Ventilation grille Model AL Maximum penetration In heating mode 01/13 - 16 Construction subject to change. Version: 13.03.2020 No return possible!

Ventilation grille Model AL Induction and temperature ratios Supply air without coanda effect Supply air with coanda effect Minimum distances Supply air without coanda effect For the diagrams to be correct, the distance z between two grilles must be > x (m) x 0,2. Supply air with coanda effect 01/13 - 17 Construction subject to change. For the diagrams to be correct, the distance z between two grilles must be > x (m) x 0,2. Version: 13.03.2020 No return possible!

with or without coanda effect Blade position Blade position Blade position 84° diverging (-L084) Blade position opposite to one another (-LGEG) •rrrrrrrrrrrrrrrrrn AAAAAAAAAAAAAAAl Blade position 110° diverging (-L110) Layout example assume: grille AL 5 H = 125 mm (with coanda effect) VZU = 400 m3/h At =4 K x =6,0 m Find: - Pressure loss - Sound level - End velocity of jet - Critical throw - Induction ratio - Temperature ratio Blade position 140° diverging (-L140) first and last slot covered Solution: Pressure loss Page°11: Apt = 22 Pa Weighted sound power level Page°11 + Page°12: vStirn = 1,8...

Ventilation grille Model AL Legend Vzu (m3/h) [l/s] Vab (m3/h) [l/s] Vx (m3/h) [l/s] vmax (m/s) Vk (m/s) vstirn (m/s) Astirn (m2) X (m) y (m) Xkr (m) P (kg/m3) Apt (Pa) Lwa [dB(A)] Lwai [dB(A)] Supply air volume Return air volume Total air jet volume at point x Maximum end velocity of jet Duct velocity Intake velocity, blower stream velocity, outflow velocity, relative to Astirn Face area horizontal throw vertical throw Critical jet path Density Pressure loss A-weighted sound power level [Lwa = lwai + KF] A-weighted sound power level, relative to Astirn, = 0,08 m2 Correction factor Temperature...