AG 2012 11 19 - Laserfiche WebLink

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I � 2.2 Site Observations Several notes about the RCCC South Campus which were taken during on -site assessments include the following: • Chilled water is supplied from the chiller plant located in Building 1000 • Each building has its own natural gas fired hot water boiler which is used for heating • Two natural gas water heaters and one electric water heater supply domestic hot water • There are two emergency generators and neither is on the Duke Power Share program • There are approximately 200 personal computers, and 400 thin clients throughout the facility with Smart projectors in many of the classrooms • The controls system is Johnson Controls Metasys, with installation and service from the ICI branch as well as an independent ICI contractor • Facility staff is working hard to control the facility efficiently but are having a tough time understanding the systems and how best to proceed • Lighting - most of the interior lighting is a mix of T5's, T8's, metal halides, CFLs. Exterior lighting is metal halide of varying wattages on a photocell /schedule through BAS • Currently the HVAC systems operate continuously, due to the extended operating hours of the campus. The actual hours of operation are: • Occupied hours: 8 AM to 12 midnight with 24x7 system operations • Recommended HVAC set points from the State Energy Office are: Summer Occupied: 75 Summer Unoccupied: 80 Winter Occupied: 70 Winter Unoccupied: 65 Several issues which were noted during on -site assessments include the following: • Facility staff would like training support on demand -side management, and BAS controls optimization to maximize energy savings through their BAS • Facility staff would like zone control for all the buildings and indicated they have trouble with pneumatics controlling 2 zones in the same room • Scheduling and temperature setbacks of HVAC systems are not being employed optimally through the BAS; systems run 24x7 except for holidays • The chiller system is original to the campus and as such is showing signs of age; the 250T chiller does not run well at start -up and shut -down • Buildings 1000 and 2000 have a mix of pneumatic and DDC controls and the controls air compressor runs excessively • Facility staff would like to upgrade exterior site lighting but have found LED and Induction fixtures to be cost prohibitive at this time • Boiler temperature cannot be controlled through ICI Metasys BAS; only the boiler pump is tied to the BAS • The VFD fan control on the AHU in Building 2000 is controlling both supply and return fans, which present challenges with maintaining building pressurization Rev A 2012 -05 -15 Page 8 Final Draft G -2 Page 332