The initial project included design of HVAC systems for a new addition and remodel area, including a new BAS. Open protocols were utilized. Occupancy sensors were installed to control lighting and the mode of the VAV boxes serving the space. One large AHU was replaced with a new unit with a water side economizer instead of the traditional air side economizer. The main reason for this was to reduce the odors drawn in by this unit under certain conditions. Charcoal filters were added to this unit to further reduce the odor problem.
A second project at this location involved replacing an old chiller with a more efficient chiller. During the summer prior to the chiller replacement, we installed an ultrasonic flow meter and data loggers to collect data on the real load of this building. This data was valuable in determining the size of the chiller to give the Owner the redundancy needed.