PROVIDE ALL LABOR, MATERIALS AND EQUIPMENT TO INSTALL IN ACCORDANCE WITH ATTACHED SPECIFICATION, DRAWINGS AND CLAUSES: 1. THE EXISTING SPLIT HVAC UNITS (SAC-1 & SAC-2) SHALL BE REFURBISHED. THE WORK INCLUDES BUT IS NOT LIMITED TO THE FOLLOWING TASKS: REPLACE THE FAN, FAN HOUSING ASSEMBLY (BELTS, SHEAVES, BEARINGS ETC) AND FAN MOTOR WITH A HIGH EFFICIENCY OVERSIZED MOTOR FOR HIGH STATIC OPERATIONS. REPLACE THE DX COIL, COMPRESSOR, FILTER, DRAIN PAN, FUSES AND CONTROL CENTER ASSEMBLY. REPLACE THE EXISTING ELECTRIC DUCT HEATER COIL IN UNIT. THE ELECTRIC DUCT HEATER CONTROL PANELS SHALL REMAIN. CONTRACTOR SHALL VERIFY IF EXISTING PANELS ARE STILL BEING MANUFACTURED BY TRANE. PANELS SHALL BE REPLACED IF AVAILABLE. CLEAN AND SANITIZE CABINETS OUTSIDE AND INSIDE, CHECK CABINETS FOR ANY LEAKS AND SEAL AIRTIGHT. 2. EXISTING CONDENSERS (CU-1 & CU-2) LOCATED ON THE SUB-JUNCTION LEVEL SHALL BE REPLACED. DEMOLITION SHALL INCLUDE THE REMOVAL OF CONDENSERS, WIRING, SUPPORTS, DUCTWORK AND CONTROLS BACK TO SOURCE. 3. DEMOLISH AND REMOVE THE EXISTING HVAC CONTROL PANEL, WIRING, SENSORS ETC. IN THE MECHANICAL ROOM AND REPLACE WITH NEW STAND ALONE DIRECT DIGITAL CONTROL PANEL. SEE SPECIFICATIONS FOR SEQUENCE OF OPERATIONS OF NEW DDCP. 4. REMOVE EXISTING DUCT SMOKE DETECTORS. FURNISH AND INSTALL NEW PHOTOELECTRIC TYPE DUCT SMOKE DETECTORS FOR SAC-1 & SAC-2. 5. THE EXISTING REFRIGERANT LINES SHALL BE REUSED. CONTRACTOR SHALL FLUSH/PURGE AND PRESSURE TEST THE EXISTING LINES BEFORE INSTALLATION OF NEW WORK. ALL EXPOSED PIPING IN MECHANICAL ROOM AND THE CONDENSER ROOM SHALL BE REINSULATED WITH NEW ARMAFLEX INSULATION. PROVIDE NEW FILTER DRYERS AND SHUT-OFF VALVES 6. FURNISH AND INSTALL A NEW CAB TEMPERATURE CONTROL SENSOR WITH TEMPERATURE DISPLAY AND SETPOINT ADJUSTMENT. 7. FURNISH AND INSTALL NEW CONDENSATE DRAIN LINES FOR SAC-1 AND SAC-2 TO THE FLOOR DRAIN INSIDE THE BUILDING. DRAIN LINES SHALL BE INSULATED AND SHALL BE SCHEDULE 40 PVC. 8. BLANK OF AND SEAL AIRTIGHT EXISTING OUTSIDE AIR OPENING WITH 6 DEEP INSULATED PLENUM. PROVIDE NEW 8 X 8 OPENING WITH MOTORIZED AND VOLUME DAMPER IN PLENUM FOR OUTSIDE AIR INTAKE. 9. ALL EXISTING DUCTWORK SYSTEM SERVING THE CAB SHALL BE CLEANED AND SANITIZED. THE EXISTING DUCTWORK ACOUSTICAL LINING AND INSULATION SHALL BE CHECKED AND REPAIR/REPLACED AS REQUIRED. MODIFY EXISTING DUCTWORK AS NECESSARY TO ACCOMMODATE NEW DUCTWORK CONNECTIONS. ALL NEW DUCTWORK SHALL BE CONSTRUCTED BY THE LATEST SMACNA CODES. 10. THE CAB HVAC SYSTEMS SHALL NOT RUN IN ECONOMIZER MODE. THE EXISTING RELIEF AIR DAMPER SHALL BE PERMANENTLY CLOSED AND LOCKED AND RETURN AIR DAMPER PERMANENTLY OPEN AND LOCKED. 11. FURNISH AND INSTALL 1 NEOPRENE ANTI-VIBRATION PADS FOR SAC-1 AND SAC-2 UNITS. 12. PROVIDE NEW FEEDER POWER AND RELATED EQUIPMENT FOR THE TWO (2) SPLIT A/C UNITS TO SERVE THE CAB. 13. DISCONNECT REMOVE AND DISPOSE ALL EXPOSE ELECTRICAL WIRING SERVING EXISTING SAC-1, SAC-2. 14. PROVIDE NEW LARGE OVER CURRENT PROTECTION IN EXISTING PANEL BOARD TO FEED NEW SAC-1, SAC-2. 15. FURNISH AND INSTALL NEW DISCONNECTS SWITCHES FOR THE SAC-1, SAC-2. 16. PROVIDE NEW FEEDER POWER FOR THE NEW SAC-1, SAC-2. 17. DISCONNECT POWER, REMOVE ALL EXISTING DISCONNECT SWITCHES AND INSTALL NEW DISCONNECT SWITCHES W/ MOTOR CONTROL STARTERS IN NEMA-3 SERVING CONDENSING UNITS; CU-1 AND CU-2. 18. DISCONNECT, REMOVE AND DISPOSE OF ALL ELECTRICAL WIRING SERVING EXISTING HVAC CONTROL PANEL. 19. PROVIDE NEW FEEDER POWER FOR NEW STAND ALONE HVAC DDC PANEL. 20. PROVIDE NEW FEEDER POWER FOR NEW OUTSIDE AIR MOTORIZED DAMPER. 21. START UP, COMMISSIONING AND BALANCING OF THE SYSTEMS PROVIDED. PERIOD OF PERFORMANCE: 90 CALENDAR DAYS