90-GV Variable geometry units

S-90-GV Variable geometry unit CONTENTS Description and coding 2 Operation 3 Dimensions 4 Technical data 4

Description The S-90-GV diffusers are variable geometry units for installation at considerable heights. They consist of a perforated cylinder, inner discs, and a damper to change the discharge air flow. The unit is connected by means of a circular spigot in the upper cover. The diffusers may be suspended or fixed to columns or walls. They are made of galvanised steel sheet with built-in equalizing air discs. Application The S-90-GV variable geometry diffusers are used in industrial environments, in both heating and cooling systems. A built-in damper allows the air discharge to be changed from...

Horizontal discharge Vertical discharge The diffuser comprises a perforated cylinder with a built-in damper and orifice plates. The air flows into the cylinder guide through the orifice plate, when contacting the damper changes the discharge air stream. In cooling mode the air is discharged horizontally and spreads in a radial pattern. In heating the damper is closed and the air is discharged downwards. The diffuser can be mounted on a duct bend or take-off below the main duct. The recommended minimum installation height is 3 m.

Technical data Horizontal throw. r Air flow Horizontal throw of the air jet, when the velocity in the occupied area is 0.20 m/s for a temperature difference of AT= -6K

Technical data Pressure drop and sound level selection charts Horizontal configuration. Horizontal discharge Air flow Pressure drop Sound power lev

Technical data Pressure drop and sound level selection charts Vertical configuration. Air flow Pressure drop Sound power lev

Ymax(m) Maximum vertical penetration depth for a temperature difference of AT

Technical data Induction rate. Temperature ratio.

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KOOLAIR, S.A. Calle Urano, 26 Poligono industrial nº 2 – La Fuensanta 28936 Móstoles - Madrid - (España) Tel: +34 91 645 00 33 Fax: +34 91 645 69 62 e-mail: [email protected]