Carrier ComfortLink 30GXN - Page 96

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APPENDIX E (cont)

Unit Size Range

NOTE: Ft of water = 2.31 x psig.

30HX CONDENSER PRESSURE DROP — ENGLISH

Unit Size Range

30HX CONDENSER PRESSURE DROP — SI

Main Page

Table of Contents1
Safety Considerations1
General2
Major System Components3
Main Base Board (MBB)3
Screw Compressor Board (SCB)3
Electronic Expansion Valve (EXV) Board3
Comfort Link Compressor Protection3
- (CCP) Board3
Energy Management Module (EMM)3
Enable/Off/Remote Connect Switch3
Emergency On/Off Switch3
Board Addresses3
Operation Data4
Electronic Expansion Valve (EXV)4
Oil Pumps5
Motor Cooling5
Back Pressure Valve5
- And 30HXA Only)5
Sensors5
Comfort Link Compressor Protection (CCP) Board7
- Outputs7
- Inputs7
Wye-Delta Vs Across-The-Line (XL)8
- Starting Option8
Capacity Control8
- Minutes off Time9
- Close Control9
- Lead/Lag Determination9
- Capacity Sequence Determination9
- Minimum Load Valve10
Head Pressure Control11
- Air-Cooled Units (30Gxn,R)11
- Water-Cooled Units (30Hxc)12
- Condenserless Units (30Hxa)12
- 09Dk Air-Cooled Condensers16
- 09Az Air-Cooled Condensers17
- Operation Sequence17
- Variable Speed Fan Control17
- Adjusting Pid Routines17
Control Methods17
- 7-Day Schedule17
- Ccn17
Cooling Setpoint Select17
Ice Mode17
Cooler and Condenser (30HXC)17
- Condenser Pump Control18
Flow Sensor18
Cooler Heater Control18
Oil Heater Control18
Navigator Display Module Usage18
Service Test19
Configuring and Operating Dual Chiller19
- Control19
Alarms/Alerts36
Run Hours and Starts36
Temperature Reset36
Demand Limit38
- DEMAND LIMIT (2-Stage Switch Controlled)38
- Externally Powered Demand Limit38
- DEMAND LIMIT (CCN Loadshed Controlled)38
Cooling Set Point (4 to 20 Ma)39
Troubleshooting41
Checking Display Codes41
Unit Shutoff41
Complete Unit Stoppage41
Single Circuit Stoppage41
Restart Procedure41
- Power Failure External to the Unit41
Alarms and Alerts41
Compressor Alarm/Alert Circuit42
EXV Troubleshooting Procedure50
- Inspecting/Opening Electronic Expansion Valves50
- Brazed-Plate Economizers51
Service52
Servicing Coolers and Condensers52
- Tube Plugging52
- Tightening Cooler/Condenser Head Bolts52
Inspecting/Cleaning Heat Exchangers52
Water Treatment53
Condenser Coils (30GXN,R Only)53
- Coil Cleaning53
- Cleaning E-Coated Coils53
Condenser Fans (30GXN,R Only)54
Refrigerant Charging/Adding Charge55
Oil Charging/Low Oil Recharging56
- Circuit B. Refer to Appendix H for Duplex Unitcombinations.57
- Replacing the External Oil Filter57
- Replacing the Internal Oil Filter57
Oil Filter Maintenance57
Compressor Changeout Sequence57
- Burnout Clean-Up Procedure59
Moisture-Liquid Indicator59
Filter Drier59
Liquid Line Service Valve59
Thermistors59
- Thermistor Replacement59
Pressure Transducers65
- Flow Sensor65
Safety Devices68
- Compressor Protection68
- Oil Separator Heaters (30Gx)68
- Cooler Protection68
Relief Devices68
- Pressure Relief Valves68
Control Modules68
- Main Base Board (Mbb), Screw Compressor68
- Comfortlink™ Compressor Protection68
- Yellow Led68
Carrier Comfort Network (CCN) Interface69
Replacing Defective Processor Module69
Winter Shutdown Preparation70
Maintenance70
Pre-Start-Up Procedure71
System Check71
Start-Up and Operation71
Actual Start-Up71
Operating Sequence71
Field Wiring72
- (Compressor Must Trip Amps)75
  - Appendix A75
  - APPENDIX B (Capacity Loading Sequence)85
APPENDIX C Available Accessories90
APPENDIX D (Building Interface)92
APPENDIX F (Typical System Components)101
APPENDIX G (CCN Configuration)113
APPENDIX H (30GXN,R Duplex Combinations)126
- APPENDIX I (Motormaster® V127
- Operation Instructions)127
APPENDIX J (Maintenance Log)130
- APPENDIX E (Cooler and134
- Condenser Pressure Drop134

Carrier ComfortLink 30GXN - Page 96

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