Carrier 38APS025 Manual

Also see for 38APD115: Installation instructions

Carrier 38APS025 Manual Manual pdf 2 page image

2CONTENTS (cont)PageMAINTENANCE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 161Recommended Maintenance Schedule. . . . . . . . . . . . 161Lubrication . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 161• CONDENSER FAN BLADES• CONDENSER FAN MOTOR BEARINGS• DOOR HINGESMicrochannel Heat Exchanger (MCHX) CondenserMaintenance and CleaningRecommendations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 161Navigator ™ Display Module . . . . . . . . . . . . . . . . . . . . . . . 161Refrigeration Circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 161• LEAK TESTING• CHARGINGGround Fault Interrupter-Convenience Outlet(GFI-CO) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 161TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . 162-175Alarms and Alerts. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 162• RESETTING ALARMS• ALARM HISTORY• ALARM AND ALERT DETAILSAPPENDIX A — DISPLAY TABLES . . . . . . . . . . . . 176-194APPENDIX B — CCN TABLES . . . . . . . . . . . . . . . . . 195-209APPENDIX C — BACNET COMMUNICATIONOPTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 210-218APPENDIX D — PIPING AND INSTRUMENTATIONDIAGRAMS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 219-224APPENDIX E — CONTROL METHODS WITHINPUTS FOR CONTROL MODECOMPARISON . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 225, 226INDEX. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 227, 228START-UP CHECKLIST FOR 38AP SPLIT SYSTEMCONDENSING UNIT. . . . . . . . . . . . . . . . . . . . CL-1 to CL-14SAFETY CONSIDERATIONSInstalling, starting up, and servicing this equipment can behazardous due to system pressures, electrical components, andequipment location (roof, elevated structures, mechanicalrooms, etc.). Only trained, qualified installers and servicemechanics should install, start up, and service this equipment.When working on this equipment, observe precautions inthe literature, and on tags, stickers, and labels attached to theequipment, and any other safety precautions that apply. Followall safety codes. Wear safety glasses and work gloves. Usecare in handling, rigging, and setting this equipment, and inhandling all electrical components.WARNINGElectrical shock can cause personal injury and death. Shutoff all power to this equipment during installation andservice. There may be more than one disconnect switch.Tag all disconnect locations to alert others not to restorepower until work is completed.WARNINGDO NOT VENT refrigerant relief valves within a building.Outlet from relief valves must be vented outdoors inaccordance with the latest edition of ANSI/ASHRAE(American National Standards Institute/American Societyof Heating, Refrigeration and Air-Conditioning Engineers)15 (Safety Code for Mechanical Refrigeration). Theaccumulation of refrigerant in an enclosed space candisplace oxygen and cause asphyxiation. Provide adequateventilation in enclosed or low overhead areas. Inhalation ofhigh concentrations of vapor is harmful and may causeheart irregularities, unconsciousness or death. Misuse canbe fatal. Vapor is heavier than air and reduces the amountof oxygen available for breathing. Product causes eye andskin irritation. Decomposition products are hazardous.WARNINGDO NOT attempt to unbraze factory joints when servicingthis equipment. Compressor oil is flammable and there isno way to detect how much oil may be in any of therefrigerant lines. Cut lines with a tubing cutter as requiredwhen performing service. Use a pan to catch any oil thatmay come out of the lines and as a gage for how much oilto add to system. DO NOT re-use compressor oil.WARNINGDO NOT USE TORCH to remove any component. Systemcontains oil and refrigerant under pressure.To remove a component, wear protective gloves and gog-gles and proceed as follows:a. Shut off electrical power to unit.b. Recover refrigerant to relieve all pressure from sys-tem using both high-pressure and low pressureports.c. Traces of vapor should be displaced with nitrogenand the work area should be well ventilated. Refrig-erant in contact with an open flame produces toxicgases.d. Cut component connection tubing with tubing cutterand remove component from unit. Use a pan tocatch any oil that may come out of the lines and as agage for how much oil to add to the system.e. Carefully unsweat remaining tubing stubs whennecessary. Oil can ignite when exposed to torchflame.Failure to follow these procedures may result in personalinjury and death.CAUTIONDO NOT re-use compressor oil or any oil that has beenexposed to the atmosphere. Dispose of oil per local codesand regulations. DO NOT leave refrigerant system open toair any longer than the actual time required to service theequipment. Seal circuits being serviced and charge withdry nitrogen to prevent oil contamination when timelyrepairs cannot be completed. Failure to follow these proce-dures may result in damage to the equipment.