Carrier Ecologic 30HXC076-271 - Page 100

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Manufacturer reserves the right to discontinue, or change at any time, speciﬁcations or designs without notice and without incurring obligations.

Book 2

Tab 5c

PC903 CatalogNo.533-062 PrintedinU.S.A. Form30G,H-3T PgCL-8 1099 1-98 Replaces:30G,H-2T

Main Page

Table of Contents1
Safety Considerations1
General2
Major System Components3
Processor Module (PSIO-1)3
DSIO-HV Relay Module3
Electronic Expansion Device Module3
Compressor Protection Module (CPM)3
PSIO-2 (8052) Module3
Keypad and Display Module (also Called HSIO-II)3
Control (LOR) Switch3
Operation Data3
Electronic Expansion Device (EXD)3
Oil Pumps4
Motor Cooling4
Back Pressure Valve (30GX and 30HXA Only)4
Sensors4
Compressor Protection Module (CPM)4
- Outputs4
- Inputs4
Wye-Delta Vs Across-The-Line (XL) Starting Option5
Capacity Control6
- Minutes off Time6
- Close Control7
- Lead/Lag Determination7
- Capacity Sequence Determination7
- Minimum Load Valve7
Head Pressure Control8
- Adjusting Pid Routines10
- Pump Control10
- Cooler Pump Control10
- Condenser Pump Control12
Cooler Heater Control13
Keypad and Display Module13
- (Also Called HSIO-II)13
- Accessing Functions and Subfunctions13
- Automatic Default Display13
- Status Function16
- Test Function25
- History Function25
- Set Point Function25
- Service Function30
- Schedule Function37
Temperature Reset39
- External Temperature Reset39
- Externally Powered Reset39
- Return Fluid Temperature Reset39
Demand Limit39
- Externally Powered Demand Limit42
Troubleshooting43
Checking Display Codes43
Unit Shutoff43
Complete Unit Stoppage43
Single Circuit Stoppage43
Restart Procedure43
- Power Failure External to the Unit43
Alarms and Alerts43
Compressor Alarm/Alert Circuit43
EXD Troubleshooting Procedure50
- Inspecting/Opening Electronic Expansion Valves51
- Inspecting/Opening Economizers51
Service52
Servicing Coolers and Condensers52
- Tube Plugging52
- Tightening Cooler/Condenser Head Bolts52
Inspecting/Cleaning Heat Exchangers53
Water Treatment53
Condenser Coils (30GX Only)53
- Coil Cleaning53
Condenser Fans (30GX Only)54
Refrigerant Charging/Adding Charge54
Oil Charging/Low Oil Recharging55
Oil Filter Maintenance56
- Replacing the External Oil Filter56
- Replacing the Internal Oil Filter56
Compressor Changeout Sequence56
- Burnout Clean-Up Procedure58
Moisture-Liquid Indicator58
Filter Drier58
Liquid Line Service Valve58
Thermistors58
- Thermistor Replacement58
Pressure Transducers59
- Pressure Transducer Calibration59
Safety Devices62
- Compressor Protection62
- Cooler Protection62
Relief Devices62
Control Modules64
- Processor Module (Psio-1), High Voltage64
- Relay Module (Dsio-Hv), and Exv Driver64
- Module (Dsio-Exv), 12/6 Module (Psio-2)64
- Red Led64
- Green Led64
Carrier Comfort Network (CCN) Interface64
- Processor Module (Psio-1)66
- High Voltage Relay Module (Dsio-Hv)66
Replacing Defective Processor Module66
Winter Shutdown Preparation66
Pre-Start-Up Procedure67
Start-Up and Operation67
Field Wiring68
- (Compressor Must Trip Amps)74
  - Appendix A74
  - APPENDIX B (Capacity Loading Sequence)77
APPENDIX C (Available Accessories)80
APPENDIX D (CPM Conﬁgurations)81
APPENDIX D (CPM Configurations)86
APPENDIX E (Cooler and Condenser Pressure Drop)86
APPENDIX F (Typical System Components)89
Index91

Carrier Ecologic 30HXC076-271 - Page 100

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