Carrier 50KC04-06 Service And Maintenance Instructions

Carrier 50KC04-06 Service And Maintenance Instructions Manual pdf 1 page image

Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.Catalog No. 04-53500223-01 Printed in U.S.A. Form 50KC-4-6-01SM Pg 1 2-19 Replaces: NEWService and Maintenance InstructionsCONTENTSSAFETY CONSIDERATIONS . . . . . . . . . . . . . . . . . . . . 1UNIT ARRANGEMENT AND ACCESS. . . . . . . . . . . . . 2General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2Routine Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . 2Seasonal Maintenance. . . . . . . . . . . . . . . . . . . . . . . . . 3SUPPLY FAN (BLOWER) SECTION . . . . . . . . . . . . . . 4Supply Fan (Belt-Drive) . . . . . . . . . . . . . . . . . . . . . . . . 4COOLING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5Condenser Coil. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5Condenser Coil Maintenance and CleaningRecommendation. . . . . . . . . . . . . . . . . . . . . . . . . . . 5Evaporator Coil . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7Refrigerant System Pressure Access Ports . . . . . . 10PURON® (R-410A) REFRIGERANT. . . . . . . . . . . . . . 11Refrigerant Charge. . . . . . . . . . . . . . . . . . . . . . . . . . . 11Compressor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11Filter Drier . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17Condenser Fan Adjustment . . . . . . . . . . . . . . . . . . . 17CONVENIENCE OUTLETS . . . . . . . . . . . . . . . . . . . . . 18Non-Powered Type. . . . . . . . . . . . . . . . . . . . . . . . . . . 18Unit-Powered Type. . . . . . . . . . . . . . . . . . . . . . . . . . . 18Duty Cycle. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19Fuse on Powered Type . . . . . . . . . . . . . . . . . . . . . . . 19Using Unit-mounted Convenience Outlets . . . . . . . 19SMOKE DETECTORS . . . . . . . . . . . . . . . . . . . . . . . . . 19System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19Controller . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19Sensor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19Smoke Detector Locations . . . . . . . . . . . . . . . . . . . . 20Completing Installation of Return Air SmokeSensor. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21FIOP Smoke Detector Wiring and Response. . . . . . 21Sensor and Controller Tests . . . . . . . . . . . . . . . . . . . 22PROTECTIVE DEVICES . . . . . . . . . . . . . . . . . . . . . . . 25Compressor Protection . . . . . . . . . . . . . . . . . . . . . . . 25Relief Device. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25Control Circuit, 24-v. . . . . . . . . . . . . . . . . . . . . . . . . . 25ELECTRIC HEATERS . . . . . . . . . . . . . . . . . . . . . . . . . 25Single Point Boxes and Supplementary Fuses . . . . 26Completing Heater Installation . . . . . . . . . . . . . . . . . 27PREMIERLINK™ CONTROLLER (FACTORYOPTION) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27RTU-OPEN CONTROL SYSTEM . . . . . . . . . . . . . . . . 27ECONOMIZER SYSTEMS. . . . . . . . . . . . . . . . . . . . . . 28EconoMi$er IV . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32Economi$er® X (Factory Option) . . . . . . . . . . . . . . . 38WIRING DIAGRAMS . . . . . . . . . . . . . . . . . . . . . . . . . . 49PRE-START-UP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .52START-UP, GENERAL . . . . . . . . . . . . . . . . . . . . . . . .52Unit Preparation . . . . . . . . . . . . . . . . . . . . . . . . . . . . .52Return-Air Filters . . . . . . . . . . . . . . . . . . . . . . . . . . . .52Outdoor-Air Inlet Screens . . . . . . . . . . . . . . . . . . . . .52Compressor Mounting . . . . . . . . . . . . . . . . . . . . . . . .52Internal Wiring. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .52Refrigerant Service Ports. . . . . . . . . . . . . . . . . . . . . .52Compressor Rotation . . . . . . . . . . . . . . . . . . . . . . . . .52Cooling. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .52Heating. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .52Ventilation (Continuous Fan). . . . . . . . . . . . . . . . . . .53START-UP, PREMIERLINK CONTROLS . . . . . . . . . .53START-UP, RTU-OPEN CONTROL . . . . . . . . . . . . . .53OPERATING SEQUENCE . . . . . . . . . . . . . . . . . . . . . .53Base Unit Controls . . . . . . . . . . . . . . . . . . . . . . . . . . .53Cooling - Units without Economizer . . . . . . . . . . . . .53Heating - Units without Economizer . . . . . . . . . . . . .53Cooling, Unit with EconoMi$er IV . . . . . . . . . . . . . . .53Heating, Unit with EconoMi$er IV . . . . . . . . . . . . . . .53Demand Controlled Ventilation . . . . . . . . . . . . . . . . .53FASTENER TORQUE VALUES. . . . . . . . . . . . . . . . . .54APPENDIX A — MODEL NUMBER SIGNIFICANCE .55APPENDIX B — PHYSICAL DATA . . . . . . . . . . . . . . .57APPENDIX C — FAN PERFORMANCE . . . . . . . . . . .59APPENDIX D — ELECTRICAL DATA. . . . . . . . . . . . .67APPENDIX E — WIRING DIAGRAMS. . . . . . . . . . . . .75APPENDIX F — MOTORMASTER SENSORLOCATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .80START-UP CHECKLIST . . . . . . . . . . . . . . . . . . . . .CL-1SAFETY CONSIDERATIONSImproper installation, adjustment, alteration, service,maintenance, or use can cause explosion, fire, electrical shockor other conditions which may cause personal injury orproperty damage. Consult a qualified installer, service agency,or your distributor or branch for information or assistance. Thequalified installer or agency must use factory-authorized kits oraccessories when modifying this product. Refer to theindividual instructions packaged with the kits or accessorieswhen installing.Follow all safety codes. Wear safety glasses and work gloves.Use quenching cloths for brazing operations and have a fireextinguisher available. Read these instructions thoroughly andfollow all warnings or cautions attached to the unit. Consultlocal building codes and appropriate national electrical codes(in USA, ANSI/NFPA70, National Electrical Code (NEC); inCanada, CSA C22.1) for special requirements.It is important to recognize safety information. This is thesafety-alert symbol . When you see this symbol on the unitand in instructions or manuals, be alert to the potential forpersonal injury.50KC04-06Single Package RooftopElectric Cooling Units with Optional Electric Heatwith Puron ® (R-410A) Refrigerant