The OPTIMA-R-FC-BM is a variable air volume controller with or without insulation. The product is intended to control the flow volume of supply or return air and is designed to be installed into circular ducts of 80 mm up to 630 mm in diameter. Available in different sizes, the product is suitable for all applications where a variable airflow volume in ventilation, cooling or heating is required. It’s regularly installed in offices, hotel rooms, health care and residential premises.

The unit is manufactured from galvanised steel sheet, making it robust and hard-wearing. The product consists of a casing, a duct connection with a rubber gasket, a damper blade with a rubber gasket and a modular VAV control device. It can be equipped with sound reduction insulation, making it suitable for use in settings where noise is a consideration. The modular VAV control device consists of an aluminium measurement probe, polyurethane measurement impulse tubes, an airflow transmitter, a modular control unit and an actuator.