bidirectional ventilation unit definition
bidirectional ventilation unit. (BVU) means a ventilation unit which produces an air flow between indoors and outdoors and is equipped with both exhaust and supply fans;
bidirectional ventilation unit. (BVU) means a ventilation unit which produces an air flow between indoors and outdoors and is equipped with both exhaust and supply fans; ….(6) ‘bidirectional ventilation unit’ (BVU) means a ventilation unit which produces an air flow between indoors and outdoors and is equipped with both exhaust and supply fans. As a BVU should be considered also two or more units combined with a run-around HRS and two or more units directly (without building sided ductwork) connected witha mixing chamber;