REDUNDANT HEATING, VENTILATION, AND AIR CONDITIONING CONTROL SYSTEM

摘要

Redundant heating, ventilation, and air conditioning (HVAC) control systems are described herein. One redundant HVAC control system includes an operator workstation and a first BACnet communication connection connected thereto, a first HVAC system controller running a first instance of a control application and a second HVAC system controller each HVAC system controller connected to a second BACnet connection. The first HVAC system controller and a second HVAC system controller can communicate with the operator workstation via the first BACnet communication connection and the second HVAC system controller is configured to execute a set of instructions to monitor the health of the first controller via the second BACnet connection to identify if the second HVAC system controller has to take over for the first HVAC system controller by initiating control of the HVAC system via a second instance of a control application run by the second HVAC system controller.