BIA Variable Geometry Diffusers

Displacement/induction hybrid diffuser with variable geometry; intended for the supply of air in comfort ventilation systems. Suitable for installations in an industrial settings, office spaces and large buildings entrance halls, auditoriums, concerts or music halls, etc.Highlights– Compact construction– Precise adjustment of various diffusing patterns in heating and cooling mode– Constant pressure loss, regardless of diffuser settings– Variants with manual or motorized adjustment– Quick and easy installation at heights from 0–5 mVersions:– Manual adjustment with a locking mechanism– Motorized, 24 V Belimo motor with 0–10V control signalDesignThe diffuser casing is made of galvanized perforated sheet. The diffuser has a rubber seal that fits standard circular spiral duct system. The vertical slot-openings of the upper diffuser section allow a higher vertical air discharge flow speed (induction mode). The round holes of the lower diffuser section allow the air to exit in a displacement mode. The internal mechanism regulates the air volume ratio between induction and displacement discharge air. The mechanism can be adjusted manually or with an On/Off actuator (24V AC), or a proportional actuator with a 0-10V Signal. It can be manually adjusted by a rope or a chain tied to the Pull-chain mechanism if the diffuser is mounted at a greater heights. - Size: 200- Type of actuation: Manual- Surface finish: Silver grey (RAL7001)- Damper position: +45°