Carrier AquaEdge 23XRV

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132

Fig. 72 — 23XRV Controls Schematic

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Safety Considerations1
Table of Contents2
Introduction5
Abbreviations and Explanations5
23Xrv Chiller Familiarization5
Chiller Identification Nameplate5
System Components5
Cooler12
Control Center12
Condenser12
Motor-Compressor12
Muffler12
Storage Vessel (Optional)12
Refrigeration Cycle13
Motor Cooling Cycle16
Lubrication Cycle16
Summary16
Details16
Oil Reclaim System17
Capacity Control18
Controls18
Definitions18
- Analog Signal18
General Controls Overview18
PIC III System Components18
- International Chiller Visual Controller (ICVC)18
- Chiller Control Module (CCM)19
- Vfd Power Module19
- Vfd Gateway Module19
- Oil Heater Contactor (1C)19
- Oil Pump Contactor (2C)19
- Hot Gas Bypass Contactor Relay (3C)19
- Second Stage Oil Heater (5C)19
- Vaporizer Heater Contactor (6C)19
- Control Transformers (T1, T2, T4)19
- Exv Control Module (Pd4-Exv)19
ICVC Operation and Menus23
- Alarms and Alerts23
- ICVC Menu Items23
- BASIC ICVC OPERATIONS (Using the Softkeys)24
- To View Status24
- Alarms and Alerts26
- Override Operations28
- Time Schedule Operation28
- To View and Change Set Points29
- Service Operation29
- Alarms and Alerts30
PIC III System Functions45
- Capacity Control45
- Forced45
- Proportional Bands and Proportional46
- Demand Limiting46
- Chiller Timers46
- Capacity Control46
- Occupancy Schedule47
Safety Controls47
Shunt Trip47
Default Screen Freeze47
Ramp Loading48
Capacity Override48
Compressor Minimum Speed Override48
Vaporizer Temperature Control48
- Compressor on48
- Compressor off48
- Compressor on52
Remote Start/Stop Contacts52
Spare Safety and Spare Temperature Inputs52
Spare Alarm Contacts52
Refrigerant Leak Detector52
To 20 Ma Kilowatt Output52
Remote Reset of Alarms52
Condenser Pump Control53
Condenser Freeze Prevention53
Tower Fan Relay Low and High53
Auto. Restart after Power Failure53
Fast Power Source Transfers53
Liquid/Brine Temperature Reset53
- Reset Type54
Demand Limit Control Option54
Hot Gas Bypass (Optional) Algorithm (See54
Head Pressure Output Reference54
Lead/Lag Control56
- Common Point Sensor Installation56
- Chiller Communication Wiring56
- Lead/Lag Operation56
- Faulted Chiller Operation58
- Load Balancing58
- Auto. Restart after Power Failure58
Attach to Network Device Control58
- Attaching to Other Ccn Modules59
Service Operation59
- To Access the Service Screens59
- To Log out of Device59
- Holiday Scheduling59
Start-Up/Shutdown/Recycle60
- Sequence60
Local Start-Up60
Shutdown Sequence61
Automatic Soft Stop Amps Threshold61
Chilled Liquid Recycle Mode61
Safety Shutdown62
Before Initial Start-Up62
Job Data Required62
Equipment Required62
Using the Optional Storage Tank62
- And Pumpout System62
Remove Shipping Packaging62
Open Oil Circuit Valves62
Oil Charge62
Tighten All Gasketed Joints62
Check Chiller Tightness64
Refrigerant Tracer64
Leak Test Chiller64
Chiller Dehydration71
Inspect Liquid Piping71
Inspect Refrigerant Cooling Lines71
Check Optional Pumpout Compressor72
- Liquid Piping72
Check Relief Valves72
Identify the VFD72
- Identifying the Drive by Part Number73
Check Control Center73
Input Power Wiring73
Checking the Installation73
Inspect Wiring74
Ground Fault Troubleshooting74
Carrier Comfort Network75
- Interface75
Power up the Controls and Check the75
- Oil Heater75
Software Configuration75
Input the Design Set Points75
Input the Local Occupancy Schedule75
- (Occpc01S)75
Input Service Configurations75
- Input Time and Date75
- To Change the Password76
- To Change the ICVC Display from English to Metric Units76
- Modify Controller Identification if Necessary76
- Input Equipment Service Parameters76
- Modify Equipment Configuration77
Perform a Control Test78
Pressure Transducer and Optional Flow78
- Device Calibration78
- Zero Point Calibration78
- High End Calibration79
Check Optional Pumpout System79
- Controls and Compressor79
High Altitude Locations79
Charge Refrigerant into Chiller79
- Chiller Equalization Without Apumpout Unit79
- Chiller Equalization with Pumpout Unit80
- Chiller Shipped with Holding Charge81
Initial Start-Up82
Preparation82
Check Oil Pressure and Compressor Stop82
To Prevent Accidental Start-Up82
Initial Start-Up83
After Limited Shutdown84
Procedures86
Chillers with Storage Tanks87
- Chillers with Isolation Valves88
- Procedures89
- Standing Vacuum Test90
Oil Specification91
Compressor Inlet Bearing Oil Orifice92
Inspect Variable Frequency Drive94
Water/Brine Treatment95
Ordering Replacement Chiller Parts96
Checking Display Messages97
Control Algorithms Checkout Procedure98
Troubleshooting Guide99
Control Modules119
Replacing Defective ICVC Modules120
Gateway Status Leds121
- Pd4 Exv Board (P Compressor Only123
- Exv Troubleshooting124
Physical Data125
- Appendix A - ICVC Parameter Index . . 145-152164
- Appendix B - Maintenance Summary164
- Appendix C - Bacnet Communication164
Index164

Carrier AquaEdge 23XRV - Page 132

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