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components for air-conditioning systems

Aphonic grilles G F Aphonic grilles Ve r s i o n s - GFA2 (single, in anodised aluminium) - GFA4 (double, in anodised aluminium) - GFA3 (single, in anodised aluminium) - GFA6 (double in anodised aluminium) - GFZ2 (single, in zinc plated steel) - GFZ4 (double, in zinc plated steel) - GFZ3 (single, in zinc plated steel) - GFA6 (double, in zinc plated steel) - GF.../2F (with 30 mm flanges) - GF...R (with bird-proof screen) The aphonic grilles of the GF series have been designed for extraction and expulsion in air conditioning and ventilation systems so as to limit the transmission of sound;...

Aphonic grilles Dimensions Section Dimensions GF...2 Construction Construction of the grille can be carried out in two ways: GFA (2/4) is constructed entirely of natural anodised aluminium, and GFZ (2/4) is constructed entirely of Sendzimir zinc plated steel. The phonoabsorbent elements are in mineral wool, protected by a micro-stretched sheet. Standard dimensions - For B from a minimum of 400 mm to a maximum of 2000 mm in increments of 100 mm - For H from a minimum of 300 mm to a maximum of 1200 mm in increments of 150 mm For non-standard sizes please contact our technical office. VER....

Aphonic grilles Construction Construction of the grille can be carried out in two ways: GFA (3/6) is constructed entirely of natural anodised aluminium, and GFZ (3/6) is constructed entirely of Sendzimir zinc plated steel. The phonoabsorbent elements are in mineral wool, protected by a microstretched sheet. Standard dimensions - For B from a minimum of 400 mm to a maximum of 2000 mm in increments of 100 mm - For H from a minimum of 300 mm to a maximum of 1200 mm in increments of 150 mm For non-standard sizes please contact our technical office. VER. 19/11/14 We reserve the right to make any...

Aphonic grilles Accessories R – bird-proof screen GF with bird-proof screen in arc-welded zinc plated steel with a 10x10 mm mesh Technical data E f f e c t i v e o u t l e t a r e a S ( m 2 ) a n d We i g h t ( k g ) The effective outlet area is a notional area that, once the velocity of the air is known, makes it possible to arrive at the rate of flow that is actually passing through the grille. The measurement is carried out with an instrument that measures the velocity of the air at various points between the fins. The formula that links the various parameters is as follows: Q = vk x S x...

Aphonic grilles The GF..4 and GF..6 grilles are made arranging respectively two GF..2 or two GF..3. Their weight is simply the double of the weights of the single grilles. VER. 19/11/14 We reserve the right to make any modifications without prior notice.

Aphonic grilles Graphical operating chart S [m2] supply air flow rate effective outlet area velocity relating to the effective outlet area S total pressure loss NOTE: The pressure losses of the four model are proportional. So that can be calculated starting from the graphic above (that is referred to the GF..2 model) and multiplying the value of the pressure loss founded for a corrective coefficient . Model GF..2 1 (directly from the graphic) VER. 25/10/12 We reserve the right to make any modifications without prior notice.

Aphonic grilles Acoustic attenuation Fixing systems Ty p e o f f i x i n g Fixing of the GF grilles is carried out by means of screws on the sides of the surround for the models with flanges, whereas for the other models the fixing is by embedding in the wall. VER. 19/11/14 We reserve the right to make any modifications without prior notice.

components for air-conditioning systems tecno-ventil s.p.a. Via Parma, 2 2 6 0 1 6 S p i n o d ’A d d a ( C R ) Te l . + 3 9 0 3 7 3 . 9 8 0 4 5 6 Fa x + 3 9 0 3 7 3 . 9 8 0 6 8 1 w w w. t e c n ove n t i l . c o m info@tecnoventil.com