ASIC/1-8755 Controller
The ASIC/1-8755 is a pre-programmed communicating digital controller for the control of zone volume or pressure tracking with pressure independent Variable Air Volume (VAV) terminal units. The controller includes two on-board airflow sensors - one controller handles both supply and exhaust boxes.
This pressure independent controller is mounted on the primary VAV terminal that is used to maintain the space temperature. The second airflow sensor monitors the exhaust airflow volume. The controller monitors exhaust volume and modulates the exhaust damper at the exhaust box to maintain a predetermined positive or negative zone pressure or exhaust volume differential. The controller has personalities for cooling only, and cooling with hot water or electric reheat. A three-position switch allows positive, neutral, or negative zone pressure control.
This pressure independent controller is mounted on the primary VAV terminal that is used to maintain the space temperature. The second airflow sensor monitors the exhaust airflow volume. The controller monitors exhaust volume and modulates the exhaust damper at the exhaust box to maintain a predetermined positive or negative zone pressure or exhaust volume differential. The controller has personalities for cooling only, and cooling with hot water or electric reheat. A three-position switch allows positive, neutral, or negative zone pressure control.
