The Alerton Envision for BACtalk System controls 20 Air Handlers, 780 VAV Boxes, 24 Fan Coils and utilizes Open Protocol BACnet to integrate to the Chillers, Boilers, ATS Equipment, VFD’s, Liebert CRU’s, Medical Gas, and Sewer Monitoring Systems. BACnet is also used to interface to another manufactures EMS system located in the original Medical Office Building.