Diffusers

The world's highest performing fixed vane VAV swirl diffuser

High capacity, high induction, fixed horizontal discharge swirl diffuser with extended VAV operating range, suitable for low temperature supply air (≥ 5°C) allowing turndown to approx 25% @ ∆Tsupply-room = -12 K. Enhanced ADPI ≥ 90% from approx. 1 L/s/m² to approx. 15 L/s/m².  May be mounted flush with ceiling or free-hanging.

Airflow volume rate

• 10 – 440 L/s (36 – 1584 m³/h)

Supply temperature

• ≥ 5°C

Nominal sizes

• DN250
• DN355
• DN500

Discharge height

• 2.4 – 4.5 m

Features

• Substantially flush face with 20 off-set radial vanes.
• High capacity fixed swirl vane VAV diffuser with horizontal discharge
• Swirl vanes with cambered leading edges reduce noise & pressure loss.
• Swirl vanes with helical twist for reduced peripheral pitch extend VAV operating range. Patents pending.
• Bell-mouth extends VAV operating range and provides stable horizontal discharge even with cold supply air  (≥ 5°C, with ∆Tsupply-room ≤ 16 K)
• Optional reducers for reduced airflow rates.
• Optional blanking segments for 3-way blow (270°) and 2-way blow (2x90° or 180°) discharge
• Square (standard) or optional round face
• Installation freely suspended or flush with closed ceiling
• Clean Screen™ smudge minimser and sweat inhibitor optionally available (patents pending)
• Similar aesthetic to HSC-AD
• Perforated square screen available to cover diffuser face

Download: Selection Tool - (xls) (4/7/18)