In this lesson we're going to cover modeling optimum start. We're going to focus on modeling optimum start for LEED compliance. For the LEED rating system, optimum start is required for systems that have greater than 10,000 cfm in the baseline. It's not required if it's less than that in the baseline, but it's often a good idea to put it into the proposed. If you want to learn more about optimum start, please see our theoretical video on what is optimum start. To model optimum start, you typically can give it two hours ahead of occupancy. This allows the system to decide if the fan should run or not. The way to do this in eQUEST is to find the fan schedule. Here we have two fan schedules for the systems, and one is for week days and one is for weekends. Ahead of time, I know that weekends are unoccupied. We're only going to focus on the week day schedule. We open that and we typically set up the buildings so that the fans kick on one hour early, just by default in eQUEST. We know this building is occupied at 8:00 A.M. We want the optimum start to be available from 6:00-8:00 A.M. This means that if the system doesn't need to kick on so that it's set point is met by 8:00 A.M., it doesn't need to be. We'll give it a maximum of two hours, that way if it needs two hours, it will take two hours. If it needs one hour, it will take on hour. All we have to do is enter -999 for the hours that we want this to operate. Then we have to remember to switch the 8:00-9:00 A.M. To 1:00 so that the fans are simply on as normal during regular occupied hours. This -999 is just a switch in eQUEST to tell it to kick on it's optimum start controls.