Ventilation grilles for instal lation into walls, sills or rec tangular ducts Type AWT Ball impact resistant ventilation grille made of alumi nium, with fixed horizontal blades Ventilation grille with special profiled blades (rectangular cross section) ■■ Nominal sizes 325 × 125 – 1225 × 325 mm ■■ Volume flow rate range 17 – 950 l/s or 61 – 3420 m³/h ■■ Grille face made of aluminium with anodised finish ■■ Tested for installation in gymnasiums ■■ Front border with countersunk holes, 30 mm wide Optional equipment and accessories ■■ Grille face in RAL CLASSIC colours ■■

Ventilation grilles for installation into walls, sills or rectangular ducts General information Page General information Function Technical data Quick sizing Specification text Order code Dimensions and weight Product details Installation examples Installation details Commissioning Basic information and nomenclature Application – Type AWT ventilation grille to be used for supply air or extract air – For gymnasiums – Meets the requirements for impact resistance of DIN 18032, part 3 – Directed supply air discharge for mixed flow ventilation – For variable and constant volume flows – For supply...

Ventilation grilles for installation into walls, sills or rectangular ducts Functional description Ventilation grilles are air terminal devices for the supply air and extract air of ventilation and air conditioning systems. They direct the supply air into the room. Ventilation grilles with adjustable blades allow for adapting the discharge direction to the local conditions. The result is a mixed flow ventilation in comfort zones and industrial zones, with good overall room ventilation. Induction slows the airflow down, i.e. the airflow velocity decreases as the distance from the grille increases....

Ventilation grilles for installation into walls, sills or rectangular ducts Air pattern with ceiling effect, sectional view Air pattern without ceiling effect, sectional view Distance from ceiling ≤ 0.3 m Air pattern with ceiling effect, top view Air pattern without ceiling effect, top view Air pattern with ceiling effect, group of grilles, top view Distance between single grilles ≥ 0.15 × lS Distance from ceiling ≤ 0.8 m Air pattern without ceiling effect, group of grilles, top view Distance between single grilles ≥ 0

Ventilation grilles for installation into walls, sills or rectangular ducts Air pattern, group of grilles, top view b < 0.1 × lS Several single grilles arranged in a row and with not much distance between them have the same effect as a continuous horizontal run.

Ventilation grilles for installation into walls, sills or rectangular ducts Technical data Nominal sizes Minimum volume flow rate Maximum volume flow rate, with LWA max. 40 dB(A) without attachments Supply air to room air temperature difference Volume flow rates apply to supply air Geometric free area H mm Effective air discharge area (supply air) H mm Effective area of extract air grille H mm

Ventilation grilles for installation into walls, sills or rectangular ducts Quick sizing × LWA = 40 dB(A) with unrestricted airflow+ LWA = 40 dB(A) with airflow restricted by 50 %

Ventilation grilles for installation into walls, sills or rectangular ducts Specification text This specification text describes the general properties of the product. Texts for variants can be generated with our Easy Product Finder design programme. Ball impact resistant ventilation grilles, rectangular, made of aluminium, for supply and extract air. Rectangular profile border sections with rounded edges Preferably for wall and sill installation but also suitable for rectangular ducts. Ready-to-install component which consists of a border and fixed horizontal blades. Countersunk holes for fixing...

Ventilation grilles for installation into walls, sills or rectangular ducts Order code  Type AWT Single grille  Attachments A Without (grille face only) AG Damper unit, opposed action blades D Air direction control, blades installed at 90° to the front blades, independently adjustable DG D combined with AG  Exposed surface No entry: anodised, E6-C-0, natural colour P1 Powder-coated, specify RAL CLASSIC colour Gloss level RAL 9010 50 % RAL 9006 30 % All other RAL colours 70 %  Nominal size [mm] L × H  Installation subframe No entry: none A1 With Order example: AWT-AG/625×225/A1 Attachments...

Ventilation grilles for installation into walls, sills or rectangular ducts The weight table shows the available nominal sizes AT, 30 mm wide front border L Nominal length Vertical centre mullion if L > 625 mm Weights apply to ventilation grilles without attachments

Ventilation grilles for installation into walls, sills or rectangular ducts Product details

Ventilation grilles for installation into walls, sills or rectangular ducts Installation examples Wall installation Nominal length over 625 mm: with vertical centre mullion

Ventilation grilles for installation into walls, sills or rectangular ducts Installation details Installation and commissioning – Installation preferably in walls, sills and rectangular ducts – Installation with installation subframe is recommended – If no installation subframe is used, the border should be fixed with screws These are only schematic diagrams to illustrate installation details.

Ventilation grilles for installation into walls, sills or rectangular ducts Volume flow rate balancing When several ventilation grilles are installed on the same duct, it may be necessary to balance the volume flow rates. – AG: Damper unit with opposed action blades, adjustable, secured with a locking screw – AS: Damper unit with hit and miss damper, adjustable, secured with a locking screw Air pattern – Adjustable blades: Set the air control blades individually or together and depending on the local conditions – D, DG: Air control blades, fitted at 90° to the front blades, can be adapted to...