Carrier appendix Typical 38AUZ Wiring Diagram 15 Ton 230V Tandem Unit Shown

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38AU

C10212A

Fig. 29 - Typical 38AUZ Wiring Diagram - (15 Ton 230V Tandem Unit Shown)

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Image 30

Contents Installation, Start---Up Service Instructions ContentsSafety Considerations Installation GuidelineReplacement/Retrofit R-22 to PuronR Installation Unit Damage HazardUnit MchxRtpf 38AUZ*25 38AUD*25Compressor Unit Size 38AURefrigerant TYPE‡ Condenser FansRtpf Shipping Charge kg Pressurestat Settings kPa High CutoutNominal Capacity kW ScrollRtpf Shipping Charge A/B lb Oil Charge A/B ozFace Area sq ft total Rows/Fins per inch FPI Oil Charge A/B L Operating Weight kg Novation Coil Al TubeRtpf Shipping Charge A/B kg Qty...r/s Motor Hp Nema Diameter mmU Z a 2 5 a 0 G 6 a 0 a 0 a Jobsite Survey InstallationMatching 38AU Model To Evaporator Coil Do not Bury Refrigeration LinesEquivalent Lengths for Common Fittings ft Provide Safety ReliefSlab Mount Check 38AU Model with Evaporator Coil ConnectionsLiquid Lift Suction Riser38AUZ 16-25 Piping Recommendations Single-Circuit Unit Insulate Suction Lines 38AUD 16-25 Piping Recommendations Two-Circuit UnitVertical Separation outdoor unit above indoor unit Hot Gas BypassInstall Filter Driers and Moisture Indicators Refrigerant Specialties Part NumbersSelecting an Accumulator Install Liquid Line Solenoid ValveCapacity Control Liquid Line Solenoid Valve Make Piping ConnectionsEvacuation/Dehydration Preliminary ChargeFire Hazard Field Power SupplyUnits with Factory-Installed Disconnect All UnitsConvenience Outlets Electrical Operation HazardField Control Wiring Convenience Outlet Utilization Notice LabelControl Transformer Wiring ThermostatUnit Wire/Fuse or Hacr Breaker Sizing Data Unbalanced 3-Phase Supply VoltageSystem Check PRE-START-UPSTART-UP Preliminary ChecksUsing plotted operating point Advanced Scroll Temperature Protection AstpAdjust Refrigerant Charge Start Unit38AUZ*25 Check Compressor Oil Level Final Checks38AUD*16 Charging Chart Novation 38AUZ*16 Charging Chart Rtpf 38AUD*16 Charging Chart Rtpf 38AUD*25 Charging Chart Rtpf Typical 38AUZ Wiring Diagram 15 Ton 230V Tandem Unit Shown Typical 38AUD Wiring Diagram 15 Ton 230V Dual Unit Shown Operating Sequence Base Unit ControlsRefrigeration System Routine System MaintenanceService Equipment Damage HazardField Refrigerant Access Ports Factory High-Flow Access PortsLiquid Line Filter Drier Comfort Alert Diagnostic Module Input Terminal VoltageLED Status Codes LockoutCompressor Protection 38AUD Size 16 Cabinet LPS 38AUZ,D Size 25 Cabinet 38AUZ*25 Compressor Assembly Rear View Coil Type Identification Novation Coil Cleaning and MaintenanceRepairing Novation Condenser Tube Leaks NOVATIONt TypeRoutine Cleaning of Round-Tube Plate Fin Rtpf Coils Replacing NOVATIONt Condenser CoilUnit Reliability Hazard Compressor Stops on HIGH-PRESSURE Switch TroubleshootingProblem Solution Compressor does not RUN Fastener Torque ValuesUnit Operates TOO Long or Continuously Problem Solution Compressor Cycles on LOW-PRESSURE SwitchCompressor Running but Cooling Insufficient System is NoisyWiring Diagram List Appendix aAppendix B Appendix C Low Ambient Option Factory InstalledTroubleshooting OperationMotormaster Sensor Location 38AUZ*16 & 38AUD*16 Novation 38AUZ*16/25 & 38AUD*16/25 RtpfWind Baffle Dimension Dimensions --- Inches Unit BaffleDimensions --- MM Unit Baffle Wind Baffles Fabrication 15 Ton Wind Baffle Brackets Fabrication Front Front Back Left Right Catalog No 38AU---09SI START-UP Checklist II. PRE-START-UP Outdoor UnitCheck Voltage Imbalance