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1. Replace the AHU supply fan motor with new premium efficiency motor. In addition, <br />replace existing belts, pulleys with new cog belt synchronous type belts and sheaves (Goodyear or <br />equal). <br /> 2. Provide Variable Speed Drive (VSD) to each AHU for the conversion of the dual duct <br /> constant air volume (MZ-CAV) to dual duct variable air volume system (MZ-VAV). <br /> 3. Replace the existing MZ dampers with new VAV retrofit dampers. <br /> 4. Provide a complete and operable system. <br /> <br />Electrical upgrades for the new HVAC equipment: <br /> <br /> 1. Provide new electrical wiring as required from the addition of VSD's to the AHU's. <br /> 2. Provide a complete and operable system. <br /> <br />Heating, Ventilating and Air Conditioning Systems (HVAC) Control System <br /> <br />See EMS scope at City Hall. <br /> <br />Building envelope upgrade: <br /> <br /> 1. Replace existing single, tempered, glazed window north side of the building, approximately <br />3,600 square feet, with new double glazed clear glass. <br /> <br />Section 4. FACILITY AND OPERATIONAL IMPROVEMENTS: Police Building <br /> <br />Lighting <br /> <br />See Exhibit F2 for attached room by room lighting spreadsheets for the exact scope of work. <br /> <br />Heating, Ventilating and Air Conditioning (HVAC) equipment <br />Chillers: <br /> <br />There are three chillers serving the whole facility. The 300-Ton screw chiller was set up to be the <br />primary unit. The other two chillers are 400-Ton centrifugal units. The chilled water distribution <br />system uses primary-secondary system, with required VSD installed and operating. <br /> <br /> 1. Provide new VSD to one (1) existing 400-Ton centrifugal chiller, and use this chiller as the <br />primary unit for the facility. For the additional cooling load requirement, the second 400-Ton <br />centrifugal unit shall be activated. The existing 300-Ton screw chiller unit shall be use as backup. <br /> <br /> 911 Call Center: The 911 Call Center is located at the fourth floor north side of the building. <br /> The space is presently conditioned by the two existing air handling units (AHU) serving the whole <br /> building. Also, there is a dedicated backup packaged air conditioning unit (BUAC) located in the roof <br /> tied in to the existing ductwork serving this space. <br /> 1. Provide new ductwork, dampers as indicated in the partial plans. <br /> <br />5 <br /> <br /> <br />