Manuals / Carrier / Household Appliance / Air Conditioner

Carrier 38AUZ,D Size 25 Cabinet, 38AUD*25 Piping, Compressors Service Valves, C10089, Hps Ckt

Models: 38AU

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38AU

Condenser Fans/Motors

Access Panel -

Control Box &

Compressors

Service

Valves

C10089

Fig. 38 - 38AUZ,D Size 25 Cabinet

CKT

HPS

LPS

CKT

HPS

CKT

LPS

C10090

Fig. 39 - 38AUD*25 Piping

Page 40

Image 40

Carrier 38AUZ,D Size 25 Cabinet, 38AUD*25 Piping, Condenser Fans/Motors Access Panel Control Box, C10089, Hps Ckt

Contents

CONTENTS Installation, Start---Upand Service Instructions38AU Air Cooled Condensing Units 60 Hz With PuronR R---410ARefrigerant SizesSAFETY CONSIDERATIONS INSTALLATION GUIDELINEReplacement/Retrofit - R-22to PuronR UNIT OPERATION AND SAFETY HAZARDUNIT DAMAGE HAZARD Installation38AU Fig. 1 - 38AU**16 Unit Dimensions 38AUFig. 2 - 38AU**25 Unit Dimensions 38AUUNIT 38AUZ*2538AU UNIT SIZE 38AU38AU UNIT SIZE 38AU38AU UNIT SIZE 38AU38AU UNIT SIZE 38AU3 8 A U Z A 2 5 A 0 G 6 A 0 A 0 A Fig. 3 - Model Number NomenclatureFig. 4 - Serial Number Nomenclature 38AUINSTALLATION Step 2 - Complete Pre-InstallationChecksFig. 5 - Service Clearance Dimensional Drawing Matching 38AU Model To Evaporator CoilProvide Safety Relief Step 3 - Prepare Unit Mounting SupportStep 4 - Rig and Mount the Unit Step 5 - Complete Refrigerant Piping ConnectionsLiquid Lift Suction Riser38AU ModelInsulate Suction Lines Hot Gas Bypass38AUD Piping Connections 38AUFig. 6 - 38AUD Service Valve Locations Install Filter Driers and Moisture IndicatorsFig. 7 - Typical Evaporator Coil Connections 40RU Puron-dutyFilter DriersInstall Liquid Line Solenoid Valve Typical 38AUZ SystemsTypical 38AUD Systems Capacity Control Liquid Line Solenoid ValveStep 6 - Install Accessories Fig. 10 - Typical Piping Connection AssemblyEvacuation/Dehydration Preliminary ChargeField Power Supply Fig. 11 - Disconnect Switch and UnitUnits Without Factory-InstalledDisconnect Units with Factory-InstalledDisconnectFig. 12 - Power Wiring Connections Fig. 14 - Powered Convenience Outlet WiringConvenience Outlets ELECTRICAL OPERATION HAZARDFig. 16 - Weatherproof Cover Installation Field Control WiringConvenience Outlet Utilization 38AU38AUD Control Circuit Wiring Control Transformer WiringFig. 19 - Control Transformer Wiring Thermostat38AU 5.Unbalanced 3-PhaseSupply VoltageLegend and Notes for Table To correct phase order PRE-START-UPSTART-UP System CheckAdvanced Scroll Temperature Protection ASTP Adjust Refrigerant ChargeUsing plotted operating point Start UnitFig. 23 - 38AUZ*16 Charging Chart Novation 38AUZ*25 Check Compressor Oil LevelFig. 22 - Recommended Oil Level - 38AUZ*25 Final ChecksFig. 24 - 38AUD*16 Charging Chart Novation 38AUCIRCUIT CIRCUITFig. 25 - 38AUZ*16 Charging Chart RTPF Fig. 26 - 38AUZ*25 Charging Chart RTPF38AU C1094738AU Fig. 27 - 38AUD*16 Charging Chart RTPFC10949 38AU Fig. 28 - 38AUD*25 Charging Chart RTPFC10950 38AU C10212A38AU C10213AOPERATING SEQUENCE Base Unit ControlsIndoor Supply Fan Cooling, Unit Without EconomizerROUTINE SYSTEM MAINTENANCE SERVICESeasonal Maintenance Synthetic Roof Precautionary ProcedureField Refrigerant Access Ports Factory High-FlowAccess PortsFig. 31 - CoreMax Access Port Assembly SEATFig. 32 - CADM Housing/LED Locations Comfort Alert Diagnostic Module38AU Table 11 - LED Status Codes Status LED Troubleshooting Information38AU Status LEDTable 12 - CADM Troubleshooting Compressor Overtemperature Protection IPLow-PressureSwitch High-PressureSwitchCondenser Fans/Motors Access Panel Control Box Compressors Service ValvesFig. 34 - 38AUD Size 16 Cabinet Fig. 35 - 38AUD*16 PipingFig. 36 - 38AUZ*16 Compressor Assembly Rear View Fig. 37 - 38AUD*16 Compressor Assembly Rear ViewEqualization LPS Oil Equalizer LineFig. 38 - 38AUZ,D Size 25 Cabinet Fig. 39 - 38AUD*25 PipingCondenser Fans/Motors Access Panel Control Box Compressors Service ValvesFig. 40 - 38AUZ*25 Compressor Assembly Rear View Fig. 41 - 38AUD*25 Compressor Assembly Rear View38AU C10215NOVATION Coil Cleaning and Maintenance Repairing NOVATION Condenser Tube LeaksCoil Type Identification NOVATIONt TypeReplacing NOVATIONt Condenser Coil UNIT RELIABILITY HAZARDUNIT DAMAGE HAZARD 38AUTROUBLESHOOTING FASTENER TORQUE VALUESTable 13 - Torque Values 38AUTROUBLESHOOTING cont 38AUWiring Diagram List APPENDIX AAPPENDIX B Air Conditioner & Heat Pump with PURON→Low Ambient Option - Factory Installed TroubleshootingAPPENDIX C OperationFig. 44 - Motormaster Sensor Location Fig. 45 - Motormaster Sensor Location38AUZ*16 & 38AUD*16 Novation 38AUZ*16/25 & 38AUD*16/25 RTPFTable 14 - Wind Baffle Dimension 38AU38AU Fig. 46 - Wind Baffles - FabricationC10363A 38AU C10366Fig. 48 - Wind Baffle Installation - 15 Ton Units FRONTLEFT BACKFig. 49 - Wind Baffle Installation - 20 Ton Units FRONTBACK LEFT38AU Catalog No 38AU---09SIEdition Date 11/10 Replaces 38AU---07SISTART-UPCHECKLIST I. PRELIMINARY INFORMATIONII. PRE-START-UP OUTDOOR UNITCHECK VOLTAGE IMBALANCE 38AU