The control package may be ordered as a Demand Control Ventilation (DCV), Smart Control (SC), Mixed Demand Control Ventilation (M-DCV), or Residential Hood (Residential-Hood). These systems are designed to control, activate, and operate the exhaust fan(s), supply fan(s), CORE system(s), and wash system dependent on the HMI settings and temperature sensors. The system can have up to two zones that the fans are assigned to. Each fan zone has several parameters that communicate with the system on how to operate.