Configurable Variable Air Volume (VAV) Controllers in the Stryker family product line. These VAV systems provide pressure independent or pressure dependent air flow control and series or induction fan control using single duct applications. VAV systems generally provide cool air only to the zones. The CVL4022 controllers provide additional outputs that control VAV box reheat coils. The heaters can be staged electric or modulating hot water. Supply and exhaust pressurization control are provided on a zone basis.