Greenheck’s Vektor-H® high plume laboratory exhaust systems in single and two fan configurations can now be specified with a factory-preprogrammed controls package. The independent control system maintains duct static pressure by modulating fan speed, bypass damper position, and isolation dampers as selected in Greenheck’s Computer Aided Product Selection program (CAPS®). The control system includes variable frequency drives (VFDs), a duct sensor, and a separate factory-programmed logic controller (PLC) and can operate as a standalone or… Read More