Carrier 50TC*17 Series Service And Maintenance Instructions

Carrier 50TC*17 Series Service And Maintenance Instructions Manual pdf 1 page image

50TC*17- 30Nominal 15 to 27.5 TonsWith Puron ® (R-410A) RefrigerantService and Maintenance InstructionsTABLE OF CONTENTSTABLE OF CONTENTS 1. . . . . . . . . . . . . . . . . . . . . . . . .SAFETY CONSIDERATIONS 1. . . . . . . . . . . . . . . . . . . .UNIT ARRANGEMENT AND ACCESS 3. . . . . . . . . . .SUPPLY FAN (BLOWER) SECTION 4. . . . . . . . . . . . . .STAGED AIR VOLUME (SAV) CONTROL: 2−SPEEDFAN WITH VARIABLE FREQUENCY DRIVE (VFD) 6ADDITIONAL VFD INSTALLATION ANDTROUBLESHOOTING 7. . . . . . . . . . . . . . . . . . . . . . . . . .CONDENSER COIL SERVICE 8. . . . . . . . . . . . . . . . . . .EVAPORATOR COILS 10. . . . . . . . . . . . . . . . . . . . . . . . .HIMIDI−MIZER DEHUMIDIFICATION SYSTEM 12THERMOSTATIC EXPANSION VALVE (TXV) 17. . . .PURON (R−410A) REFRIGERANT 19. . . . . . . . . . . . .COOLING CHARGING CHARTS 20. . . . . . . . . . . . . . . .COMPRESSORS 24. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .TROUBLESHOOTING THE COOLING SYSTEM 26. .CONVENIENCE OUTLETS 27. . . . . . . . . . . . . . . . . . . .SMOKE DETECTORS 28. . . . . . . . . . . . . . . . . . . . . . . . .INDICATORS 34. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .PROTECTIVE DEVICES 35. . . . . . . . . . . . . . . . . . . . . . .PREMIERLINK™ CONTROL 36. . . . . . . . . . . . . . . . . . .RTU−OPEN CONTROL SYSTEM 38. . . . . . . . . . . . . . . .ECONOMI$ER SYSTEMS 40. . . . . . . . . . . . . . . . . . . . . .PRE−START−UP/START−UP 49. . . . . . . . . . . . . . . . . . . .START−UP, PREMIERLINK™ CONTROLS 50. . . . . . .START−UP, RTU−OPEN CONTROLS 51. . . . . . . . . . . .FASTENER TORQUE VALUES 51. . . . . . . . . . . . . . . . .APPENDIX I. MODEL NO. NOMENCLATURE 52. . .APPENDIX II. PHYSICAL DATA 53. . . . . . . . . . . . . . . .APPENDIX III. FAN PERFORMANCE 61. . . . . . . . . . .APPENDIX IV. WIRING DIAGRAMS 67. . . . . . . . . . . .APPENDIX V. MOTORMASTER SENSORLOCATIONS 80. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .UNIT START-UP CHECKLIST 81. . . . . . . . . . . . . . . . . .SAFETY CONSIDERATIONSInstallation and servicing of air-conditioning equipmentcan be hazardous due to system pressure and electricalcomponents. Only trained and qualified service personnelshould install, repair, or service air-conditioningequipment. Untrained personnel can perform the basicmaintenance functions of replacing filters. Trained servicepersonnel should perform all other operations.When working on air-conditioning equipment, observeprecautions in the literature, tags and labels attached tothe unit, and other safety precautions that may apply.Follow all safety codes. Wear safety glasses and workgloves. Use quenching cloth for unbrazing operations.Have fire extinguishers available for all brazingoperations.Follow all safety codes. Consult local building codes andNational Electrical Code (NEC) for special requirements.Recognize safety information. This is the safety−alertsymbol . When you see this symbol on the unit and ininstructions or manuals, be aware of the potential forphysical injury hazards.Understand the signal words DANGER, WARNING, andCAUTION. These words are used with the safety−alertsymbol. DANGER identifies a hazardous situation which,if not avoided, will result in death or severe personalinjury. WARNING indicates a hazardous situation which,if not avoided, could result in death or personal injury.CAUTION indicates a hazardous situation which, if notavoided, could result in minor to moderate injury orproduct and property damage. NOTICE is used to addresspractices not related to physical injury. NOTE is used tohighlight suggestions which will result in enhancedinstallation, reliability, or operation.