Orange County NC Website
15 <br /> BRADY <br /> o Disconnect and remove existing chiller load side power and control wiring. <br /> o Reuse existing disconnect. <br /> o Disconnect pumps P-1,2,5 <br /> • Installation <br /> o Install new VFD's for pumps P-1,2,5 and wire <br /> o Reconnect pumps P-1,2,5 from load side of VFD's <br /> o Provide new load side power feed from panel to chiller per manufacturer's <br /> requirements. <br /> • Testing <br /> o Verify proper rotation and voltage before energizing chiller. <br /> 3. Controls <br /> • Demolition <br /> o Remove old control wiring and sensors associated with previous chiller. <br /> • Installation <br /> o Integrate new chiller into BAS via BACnet/IP or Modbus (as specified). <br /> • Configure points for: <br /> • Siemens BACnet IP PXC Controller with the following points (26 <br /> hardwired points, 40 integration points): Chiller Enable <br /> ■ Chiller Status <br /> • Chiller Setpoint <br /> • Chiller Fault <br /> • Chiller Supply Temperature <br /> • Primary Pump P-5 Start/Stop wiring (Pump to be started by chiller) <br /> • Primary Pump P-5 Status <br /> • Primary Pump P-5 VFD Fault <br /> • Primary Pump P-5 VFD Speed Control <br /> • Primary Pump P-5 VFD Speed Feedback <br /> • Building Chilled Water Return Temperature <br /> ■ Building Chilled Water Return Flow <br /> ■ Decoupler Line Temperature <br /> ■ (2) Secondary Pump (P-1 and P-2) Start/Stop <br /> • (2) Secondary Pump (P-1 and P-2) Status <br /> • (2) Secondary Pump (P-1 and P-2) VFD Fault <br /> • (2) Secondary Pump (P-1 and P-2) VFD Speed Control <br /> • (2) Secondary Pump (P-1 and P-2) VFD Speed Feedback <br /> • Building Chilled Water Supply Temperature <br /> 808 Aviation Parkway, Suite 1100, Morrisville, NC 27560 — Tel: 866.328.2764 — bradyservices.com <br /> Page 3 of 5 <br />