Manuals / Carrier / Household Appliance / Air Conditioner

Carrier 38AU appendix C10366

Models: 38AU

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C10366

Fig. 47 - 15 Ton Wind Baffle Brackets - Fabrication

38AU

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Contents

With PuronR R---410ARefrigerant Sizes CONTENTSInstallation, Start---Upand Service Instructions 38AU Air Cooled Condensing Units 60 HzUNIT OPERATION AND SAFETY HAZARD SAFETY CONSIDERATIONSINSTALLATION GUIDELINE Replacement/Retrofit - R-22to PuronRInstallation UNIT DAMAGE HAZARD38AU 38AU Fig. 1 - 38AU**16 Unit Dimensions38AUZ*25 Fig. 2 - 38AU**25 Unit Dimensions38AU UNITUNIT SIZE 38AU 38AUUNIT SIZE 38AU 38AUUNIT SIZE 38AU 38AUUNIT SIZE 38AU 38AU38AU 3 8 A U Z A 2 5 A 0 G 6 A 0 A 0 AFig. 3 - Model Number Nomenclature Fig. 4 - Serial Number NomenclatureMatching 38AU Model To Evaporator Coil INSTALLATIONStep 2 - Complete Pre-InstallationChecks Fig. 5 - Service Clearance Dimensional DrawingStep 5 - Complete Refrigerant Piping Connections Provide Safety ReliefStep 3 - Prepare Unit Mounting Support Step 4 - Rig and Mount the UnitModel Liquid LiftSuction Riser 38AU38AU Insulate Suction LinesHot Gas Bypass 38AUD Piping ConnectionsPuron-dutyFilter Driers Fig. 6 - 38AUD Service Valve LocationsInstall Filter Driers and Moisture Indicators Fig. 7 - Typical Evaporator Coil Connections 40RUCapacity Control Liquid Line Solenoid Valve Install Liquid Line Solenoid ValveTypical 38AUZ Systems Typical 38AUD SystemsPreliminary Charge Step 6 - Install AccessoriesFig. 10 - Typical Piping Connection Assembly Evacuation/DehydrationUnits with Factory-InstalledDisconnect Field Power SupplyFig. 11 - Disconnect Switch and Unit Units Without Factory-InstalledDisconnectELECTRICAL OPERATION HAZARD Fig. 12 - Power Wiring ConnectionsFig. 14 - Powered Convenience Outlet Wiring Convenience Outlets38AU Fig. 16 - Weatherproof Cover InstallationField Control Wiring Convenience Outlet UtilizationThermostat 38AUD Control Circuit WiringControl Transformer Wiring Fig. 19 - Control Transformer Wiring5.Unbalanced 3-PhaseSupply Voltage 38AULegend and Notes for Table System Check To correct phase orderPRE-START-UP START-UPStart Unit Advanced Scroll Temperature Protection ASTPAdjust Refrigerant Charge Using plotted operating pointFinal Checks Fig. 23 - 38AUZ*16 Charging Chart Novation38AUZ*25 Check Compressor Oil Level Fig. 22 - Recommended Oil Level - 38AUZ*25CIRCUIT Fig. 24 - 38AUD*16 Charging Chart Novation38AU CIRCUITC10947 Fig. 25 - 38AUZ*16 Charging Chart RTPFFig. 26 - 38AUZ*25 Charging Chart RTPF 38AUFig. 27 - 38AUD*16 Charging Chart RTPF 38AUC10949 Fig. 28 - 38AUD*25 Charging Chart RTPF 38AUC10950 C10212A 38AUC10213A 38AUCooling, Unit Without Economizer OPERATING SEQUENCEBase Unit Controls Indoor Supply FanSynthetic Roof Precautionary Procedure ROUTINE SYSTEM MAINTENANCESERVICE Seasonal MaintenanceSEAT Field Refrigerant Access PortsFactory High-FlowAccess Ports Fig. 31 - CoreMax Access Port AssemblyComfort Alert Diagnostic Module Fig. 32 - CADM Housing/LED Locations38AU Status LED Table 11 - LED Status CodesStatus LED Troubleshooting Information 38AUHigh-PressureSwitch Table 12 - CADM TroubleshootingCompressor Overtemperature Protection IP Low-PressureSwitchFig. 35 - 38AUD*16 Piping Condenser Fans/Motors Access Panel Control BoxCompressors Service Valves Fig. 34 - 38AUD Size 16 CabinetOil Equalizer Line Fig. 36 - 38AUZ*16 Compressor Assembly Rear ViewFig. 37 - 38AUD*16 Compressor Assembly Rear View Equalization LPSCompressors Service Valves Fig. 38 - 38AUZ,D Size 25 CabinetFig. 39 - 38AUD*25 Piping Condenser Fans/Motors Access Panel Control BoxC10215 Fig. 40 - 38AUZ*25 Compressor Assembly Rear ViewFig. 41 - 38AUD*25 Compressor Assembly Rear View 38AUNOVATIONt Type NOVATION Coil Cleaning and MaintenanceRepairing NOVATION Condenser Tube Leaks Coil Type Identification38AU Replacing NOVATIONt Condenser CoilUNIT RELIABILITY HAZARD UNIT DAMAGE HAZARD38AU TROUBLESHOOTINGFASTENER TORQUE VALUES Table 13 - Torque Values38AU TROUBLESHOOTING contAir Conditioner & Heat Pump with PURON→ Wiring Diagram ListAPPENDIX A APPENDIX BOperation Low Ambient Option - Factory InstalledTroubleshooting APPENDIX C38AUZ*16/25 & 38AUD*16/25 RTPF Fig. 44 - Motormaster Sensor LocationFig. 45 - Motormaster Sensor Location 38AUZ*16 & 38AUD*16 Novation38AU Table 14 - Wind Baffle DimensionFig. 46 - Wind Baffles - Fabrication 38AUC10363A C10366 38AUBACK Fig. 48 - Wind Baffle Installation - 15 Ton UnitsFRONT LEFTLEFT Fig. 49 - Wind Baffle Installation - 20 Ton UnitsFRONT BACKReplaces 38AU---07SI 38AUCatalog No 38AU---09SI Edition Date 11/10OUTDOOR UNIT START-UPCHECKLISTI. PRELIMINARY INFORMATION II. PRE-START-UP38AU CHECK VOLTAGE IMBALANCE