A780
3Pages

Catalog excerpts

GRID CORE GRILLE A-770/A-780 Installation dimensions A-780 Application The grille type A-770/A-780 is used for the exhaust of large quantities of air with minimal pressure loss in facilities such as offices, warehouses, shopping centres, ... The grille can be mounted in the wall or the ceiling (only AE and AF). Technical information Characteristics: Nominal dimensions: L = nominal length (mm) H = nominal height (mm) All dimensions in mm Fast selection diagram • grid core with square mesh or mesh with 45° deflection • mazes: 12,5 x 12,5 mm • free passage ca. 85 % • available in multiples of 1 mm, in height as well as in length min L = 100 mm, max L = 2000 mm min H = 100 mm, max H = 1220 mm • GT007 only available in multiples of 25 mm in height as well as in length max L= 1200 mm, max H= 600 mm Construction: • extruded aluminium frame, tone anodised • mill finish aluminium grid core For a detailed selection and other dimensions, see next page. Specifications subject to change ©

Open the catalog to page 1

Specifications description Example: Aluminium exhaust grille with fixed grid core (square mesh of 12,5 x 12,5 mm), equipped with a damper. The frame is natural tone anodised. Type: AF780 + GT007 Accessories • GT007: damper with vertical opposed blades. Constructed in galvanised steel sheet painted black. (For further details, see p. 1 290) • GR001: mounting frame: roll-formed, galvanised steel sheet (only for AD and AE) AF770/AF780 Visible screw fixing How to order AE780, dimension 300 x 300 mm, with damper GT007 and mounting frame GR001 a) Grille Specifications subject to change ©...

Open the catalog to page 2

1— f» II jFIfl UrvHUH INTERNATIONAL Selection diagram - exhaust m / h 100 Air flow rate measurement-exhaust Example - Exhaust air flow rate qv = 0,5 m3/s - Grille: 500 x 300 mm - Air velocity vk = 6,5 m/s - Noise level NR 40 - Total pressure loss with damper 50% open: A pt = 15 Pa - Noise level correction: NR 40 + 8 = NR 48 Specifications subject to change © 12-2012

Open the catalog to page 3