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→Convert Variable Air Volume Controls
Most of the [http://en.wikipedia.org/wiki/Pneumatic_flow_control pneumatic controllers] that drive the [http://www.freepatentsonline.com/4110868.html air dampers] in the Sci D variable air volume (VAV) [http://www.slopeindicator.com/instruments/terminal-boxes.html terminal boxes] are non-functional. Field operational checks have shown that because of this supply and return air fans have been operating at full capacity, "constant volume reheat mode", during occupied building hours since 2005 or earlier. The
proposed design change involves converting pneumatic Sci D air and heat controls to DDC. By doing this the building will improve its air flow and thermal control as well as save an estimated $12, 720 and 97,858 kWh annually. This equates to a reduction of fan energy demand by about 60%. The budget to convert the terminal box and thermostat systems along with the remaining pneumatic systems to DDC is $46,500.
== Install Variable Frequencey Drives ==