Carrier WEATHERMASTER 48/50Z030-105 Operation And Service Manual

Also see for 48/50Z030-105: Installation instructions

Contents

Carrier WEATHERMASTER 48/50Z030-105 Operation And Service Manual Manual pdf 2 page image

2CONTENTS (cont)PageSmoke Control Modes . . . . . . . . . . . . . . . . . . . . . . . . . . . 72• FIRE SMOKE INPUTS• AIRFLOW CONTROL DURING THE FIRE/SMOKEMODES• RELEVANT ITEMSIndoor Air Quality Control . . . . . . . . . . . . . . . . . . . . . . . 73• OPERATION• SETTING UP THE SYSTEM• PRE-OCCUPANCY PURGE• OPTIONAL AIRFLOW STATIONHumidification. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76• SETTING UP THE SYSTEM• OPERATION• CONFIGURING THE HUMIDIFIER ACTUATORDehumidification and Reheat. . . . . . . . . . . . . . . . . . . . 77• SETTING UP THE SYSTEM• OPERATIONTemperature Compensated Start . . . . . . . . . . . . . . . . 78• SETTING UP THE SYSTEM• TEMPERATURE COMPENSATED START LOGICCarrier Comfort Network® (CCN). . . . . . . . . . . . . . . . . 79Alert Limit Configuration . . . . . . . . . . . . . . . . . . . . . . . . 80Sensor Trim Configuration . . . . . . . . . . . . . . . . . . . . . . 81Discrete Switch Logic Configuration . . . . . . . . . . . . 81Display Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . 82Remote Control Switch Input . . . . . . . . . . . . . . . . . . . . 83Hot Gas Bypass . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 83Space Temperature Offset . . . . . . . . . . . . . . . . . . . . . . . 83TIME CLOCK CONFIGURATION . . . . . . . . . . . . . . 84, 85TROUBLESHOOTING. . . . . . . . . . . . . . . . . . . . . . . . 85-102Complete Unit Stoppage . . . . . . . . . . . . . . . . . . . . . . . . 85Single Circuit Stoppage . . . . . . . . . . . . . . . . . . . . . . . . . 85Service Analysis . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 85Restart Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 85Thermistor Troubleshooting . . . . . . . . . . . . . . . . . . . . . 85Transducer Troubleshooting. . . . . . . . . . . . . . . . . . . . . 86Forcing Inputs and Outputs . . . . . . . . . . . . . . . . . . . . . 90Run Status Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 90• AUTO VIEW OF RUN STATUS• ECONOMIZER RUN STATUS• COOLING INFORMATION• MODE TRIP HELPER• CCN/LINKAGE DISPLAY TABLE• COMPRESSOR RUN HOURS DISPLAY TABLE• COMPRESSOR STARTS DISPLAY TABLE• SOFTWARE VERSION NUMBERS DISPLAY TABLEAlarms and Alerts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 94MAJOR SYSTEM COMPONENTS . . . . . . . . . . . 102-124General. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 102Factory-Installed Components . . . . . . . . . . . . . . . . . 102Accessory Control Components. . . . . . . . . . . . . . . . 122SERVICE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 125-132Service Access. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 125Adjustments. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 128Cleaning. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 129Lubrication . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 130Refrigerant Feed Components. . . . . . . . . . . . . . . . . . 130Thermostatic Expansion Valve (TXV) . . . . . . . . . . . 130Refrigeration Circuits. . . . . . . . . . . . . . . . . . . . . . . . . . . 130Oil Charge. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 130Gas System Adjustment (48Z Only). . . . . . . . . . . . . 131Moisture/Liquid Indicator. . . . . . . . . . . . . . . . . . . . . . . 131Filter Drier. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 131Liquid Line Service Valve. . . . . . . . . . . . . . . . . . . . . . . 131Compressor Discharge Service Valve . . . . . . . . . . 131Compressor Suction Service Valve . . . . . . . . . . . . . 131Protective Devices . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 131Relief Devices . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 132PageControl Circuit, 115 V. . . . . . . . . . . . . . . . . . . . . . . . . . . 132Control Circuit, 24 V . . . . . . . . . . . . . . . . . . . . . . . . . . . . 132Gas Heat (48Z Only) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 132Compressor Removal . . . . . . . . . . . . . . . . . . . . . . . . . . 132Compressor Replacement. . . . . . . . . . . . . . . . . . . . . . 132APPENDIX A — LOCAL DISPLAY TABLES. . 133-141APPENDIX B — CCN TABLES . . . . . . . . . . . . . . 142-156APPENDIX C — UNIT STAGING TABLES. . . . 156-159APPENDIX D — VFD INFORMATION . . . . . . . . 160-168APPENDIX E — MODE SELECTIONPROCESS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 169, 170INDEX . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 171CONTROLS SET POINT ANDCONFIGURATION LOG . . . . . . . . . . . . . . . .CL-1 - CL-6UNIT START-UP CHECKLIST . . . . . . . . . . . . . . . . . .CL-7SAFETY CONSIDERATIONSInstallation and servicing of air-conditioning equipment canbe hazardous due to system pressure and electrical compo-nents. Only trained and qualified service personnel shouldinstall, repair, or service air-conditioning equipment. Untrainedpersonnel can perform the basic maintenance functions ofreplacing filters. Trained service personnel should perform allother operations.When working on air-conditioning equipment, observe pre-cautions in the literature, tags and labels attached to the unit,and other safety precautions that may apply. Follow all safetycodes. Wear safety glasses and work gloves. Use quenchingcloth for unbrazing operations. Have fire extinguishers avail-able for all brazing operations.WARNINGBefore performing service or maintenance operation onunit turn off and lock off main power switch to unit.Electrical shock can cause personal injury and death.Shut off all power to this equipment during installationand service. The unit may have an internal non-fuseddisconnect or a field-installed disconnect.CAUTIONThis unit uses a microprocessor-based electronic controlsystem. Do not use jumpers or other tools to short out com-ponents or to bypass or otherwise depart from recom-mended procedures. Any short-to-ground of the controlboard or accompanying wiring may destroy the electronicmodules or electrical components.WARNING1. Improper installation, adjustment, alteration, service,or maintenance can cause property damage, personalinjury, or loss of life. Refer to the User’s InformationManual provided with this unit for more details.2. Do not store or use gasoline or other flammablevapors and liquids in the vicinity of this or any otherappliance.What to do if you smell gas:1. DO NOT try to light any appliance.2. DO NOT touch any electrical switch, or use anyphone in your building.3. IMMEDIATELY call your gas supplier from a neigh-bor’s phone. Follow the gas supplier’s instructions.4. If you cannot reach your gas supplier call the firedepartment.