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VAV-SD

The Alerton® BACtalk® VAV-SD controller is a versatile BACnet-compliant field controller that provides pressure-independent control of any single-duct variable air volume (VAV) box. As a native BACnet controller, the VAV-SD integrates seamlessly with your BACnet system, communicating at up to 76.8 Kbps on a BACnet MS/TP LAN.

The BACtalk VAV-SD contains an integral airflow sensor to provide pressure-independent operation of the VAV box. Each airflow sensor is factory-calibrated at multiple velocity points. Minimum, maximum, and reheat airflows can be entered either at a Microset wall unit or an operator workstation. A technician can adjust the calibration in the field during balancing to compensate for slight variations in box installation and type.

All control algorithms are factory-loaded into non-volatile flash memory and can be field-modified. The VAV-SD can execute control algorithms independently of other equipment. All calibration, programming and operator-entered setup data is stored in flash memory for further assurance of stable, reliable, and independent operation.

The BACtalk VAV-SD is your complete answer to control of all single-duct VAV boxes in a BACnet environment. With its integral airflow sensor and programming flexibility, the VAV-SD provides every option for precision VAV box control.

VAV-SD—4 inputs, 1 flow transducer, 5 binary outputs, ½ amp triacs, Single Duct VAV control.