Carrier 38AU appendix Nominal Capacity kW, Rtpf Shipping Charge kg, Scroll, Oil Charge L

Carrier 38AU appendix Installation, Start---Up Service Instructions, Contents Carrier 38AU appendix Safety Considerations, Installation Guideline, Replacement/Retrofit R-22 to PuronR Carrier 38AU appendix Installation, Unit Damage Hazard Carrier 38AU appendix Unit, Mchx, Rtpf Carrier appendix 38AUZ*25, 38AUD*25 Carrier Unit Size 38AU, Refrigerant TYPE‡, Compressor, Condenser Fans, Rtpf Condenser Coil, Novation Condenser Coil Carrier 38AU appendix Nominal Capacity kW, Rtpf Shipping Charge kg, Scroll, Oil Charge L, Rows/Fins per Meter Fins/m Carrier 38AU appendix Rtpf Shipping Charge A/B lb, Oil Charge A/B oz, Face Area sq ft total Rows/Fins per inch FPI Carrier 38AU appendix Operating Weight kg Novation Coil Al Tube, Rtpf Shipping Charge A/B kg, Oil Charge A/B L Carrier 38AU appendix U Z a 2 5 a 0 G 6 a 0 a 0 a Carrier appendix Installation, Matching 38AU Model To Evaporator Coil, Jobsite Survey, Do not Bury Refrigeration Lines Carrier 38AU appendix Slab Mount, Equivalent Lengths for Common Fittings ft, Provide Safety Relief Carrier appendix Liquid Lift, Suction Riser, 38AUZ 16-25 Piping Recommendations Single-Circuit Unit Carrier appendix 38AUD 16-25 Piping Recommendations Two-Circuit Unit, Vertical Separation outdoor unit above indoor unit Carrier 38AU appendix Install Filter Driers and Moisture Indicators, Refrigerant Specialties Part Numbers Carrier 38AU Install Liquid Line Solenoid Valve, Capacity Control Liquid Line Solenoid Valve, Selecting an Accumulator Carrier 38AU appendix Evacuation/Dehydration, Preliminary Charge Carrier 38AU appendix Field Power Supply, Fire Hazard, Units with Factory-Installed Disconnect, All Units Carrier 38AU appendix Convenience Outlets, Electrical Operation Hazard Carrier 38AU appendix Convenience Outlet Utilization Notice Label, Field Control Wiring Carrier 38AU appendix Thermostat, Control Transformer Wiring Carrier 38AU appendix Unit Wire/Fuse or Hacr Breaker Sizing Data, Unbalanced 3-Phase Supply Voltage Carrier 38AU appendix Pre-Start-Up, System Check, Preliminary Checks Carrier 38AU Start Unit, Compressor Overload, Advanced Scroll Temperature Protection Astp, Adjust Refrigerant Charge Carrier appendix 38AUZ*25 Check Compressor Oil Level, Final Checks Carrier appendix 38AUD*16 Charging Chart Novation Carrier appendix 38AUZ*16 Charging Chart Rtpf Carrier appendix 38AUD*16 Charging Chart Rtpf Carrier appendix 38AUD*25 Charging Chart Rtpf Carrier appendix Typical 38AUZ Wiring Diagram 15 Ton 230V Tandem Unit Shown
Page 7

Table 1B — Physical Data — 38AUZ*16-25 Units — 60 Hz SI

UNIT SIZE 38AU

Z*16

 

 

 

Z*25

 

 

 

 

 

 

NOMINAL CAPACITY (kW)

52.7

 

 

 

70.3

 

 

 

 

 

 

OPERATING WEIGHT (kg)

 

 

 

 

 

NOVATION™ Coil (Al Tube)

288

 

 

 

---

 

 

 

Round Tube/Plate Fin Coil (Cu/Al)

332

 

 

 

409

 

 

 

 

 

 

REFRIGERANT TYPE‡

 

R-410A

 

 

NOVATION Operating Charge, Typical (kg)†

11.1

 

 

 

---

NOVATION Shipping Charge (kg)

5.4

 

 

 

---

RTPF Operating Charge, Typical (kg)†

19.5

 

 

 

17.2

RTPF Shipping Charge (kg)

14.5

 

 

 

12.7

 

 

 

 

 

 

COMPRESSOR

 

Scroll

 

 

Qty...Type

2...Scroll

 

 

2...Scroll

 

 

Oil Charge (L)

1.7

 

 

 

3.2

 

 

 

 

 

 

CONDENSER FANS

 

 

 

 

 

Qty...r/s

3...18

 

 

 

4...18

 

 

 

Motor Hp NEMA

1/4

 

 

 

1/4

Diameter (mm)

560

 

 

 

560

Nominal Airflow (L/s)

4248

 

 

 

5663

Watts (Total)

970

 

 

 

1150

 

 

 

 

 

 

RTPF CONDENSER COIL (Qty)

 

 

 

 

 

Material (Tube/Fin)

Cu / Al

 

 

Cu / Al

 

 

Coil Type

3/ --- in RTPF

 

3/

8

--- in RTPF

 

8

 

 

 

Rows/Fins per Meter (Fins/m)

1...670

 

 

2...670

Face Area (sq m total)

4.4

 

 

 

4.6

 

 

 

 

 

 

NOVATION CONDENSER COIL

 

 

 

 

 

Material (Tube/Fin)

Al / Al

 

 

 

---

 

 

 

Coil Type

Novation

 

 

 

---

Rows/Fins per Meter (Fins/m)

1...670

 

 

 

---

Face Area (sq m total)

4.6

 

 

 

---

 

 

 

 

 

 

CONTROLS

 

 

 

 

 

Pressurestat Settings (kPa)

 

 

 

 

 

High Cutout

4347 ± 70

 

 

Cut-in

3482 ±138

 

 

Low Cutout

372 ± 21

 

 

Cut-in

807 ± 34

 

 

 

 

 

 

 

 

PIPING CONNECTIONS (mm ODS)

 

 

 

 

 

Qty...Suction

1...34.9

 

 

1...38.7

 

 

Qty...Liquid

1...13.3

 

 

1...13.3

 

 

 

 

 

 

LEGEND

RTPF — Round Tube/Plate Fin

NEMA — National Electrical Manufacturers Association

ODS — Outside Diameter Sweat (socket)

‡Unit is factory-supplied with partial charge only.

†Typical operating charge with 7.62 m of interconnecting piping.

38AU

7

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Contents Contents Installation, Start---Up Service InstructionsInstallation Guideline Safety ConsiderationsReplacement/Retrofit R-22 to PuronR Unit Damage Hazard InstallationMchx UnitRtpf 38AUD*25 38AUZ*25Condenser Fans Unit Size 38AURefrigerant TYPE‡ CompressorScroll Pressurestat Settings kPa High CutoutNominal Capacity kW Rtpf Shipping Charge kgOil Charge A/B oz Rtpf Shipping Charge A/B lbFace Area sq ft total Rows/Fins per inch FPI Qty...r/s Motor Hp Nema Diameter mm Operating Weight kg Novation Coil Al TubeRtpf Shipping Charge A/B kg Oil Charge A/B LU Z a 2 5 a 0 G 6 a 0 a 0 a Do not Bury Refrigeration Lines InstallationMatching 38AU Model To Evaporator Coil Jobsite SurveyCheck 38AU Model with Evaporator Coil Connections Provide Safety ReliefSlab Mount Equivalent Lengths for Common Fittings ftSuction Riser Liquid Lift38AUZ 16-25 Piping Recommendations Single-Circuit Unit Hot Gas Bypass 38AUD 16-25 Piping Recommendations Two-Circuit UnitVertical Separation outdoor unit above indoor unit Insulate Suction LinesRefrigerant Specialties Part Numbers Install Filter Driers and Moisture IndicatorsMake Piping Connections Install Liquid Line Solenoid ValveCapacity Control Liquid Line Solenoid Valve Selecting an AccumulatorPreliminary Charge Evacuation/DehydrationAll Units Field Power SupplyUnits with Factory-Installed Disconnect Fire HazardElectrical Operation Hazard Convenience OutletsConvenience Outlet Utilization Notice Label Field Control WiringThermostat Control Transformer WiringUnbalanced 3-Phase Supply Voltage Unit Wire/Fuse or Hacr Breaker Sizing DataPreliminary Checks PRE-START-UPSTART-UP System CheckStart Unit Advanced Scroll Temperature Protection AstpAdjust Refrigerant Charge Using plotted operating pointFinal Checks 38AUZ*25 Check Compressor Oil Level38AUD*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 Base Unit Controls Operating SequenceEquipment Damage Hazard Routine System MaintenanceService Refrigeration SystemFactory High-Flow Access Ports Field Refrigerant Access PortsLiquid Line Filter Drier Input Terminal Voltage Comfort Alert Diagnostic ModuleLockout LED Status CodesCompressor Protection 38AUD Size 16 Cabinet LPS 38AUZ,D Size 25 Cabinet 38AUZ*25 Compressor Assembly Rear View NOVATIONt Type Novation Coil Cleaning and MaintenanceRepairing Novation Condenser Tube Leaks Coil Type IdentificationReplacing NOVATIONt Condenser Coil Routine Cleaning of Round-Tube Plate Fin Rtpf CoilsUnit Reliability Hazard Fastener Torque Values TroubleshootingProblem Solution Compressor does not RUN Compressor Stops on HIGH-PRESSURE SwitchSystem is Noisy Problem Solution Compressor Cycles on LOW-PRESSURE SwitchCompressor Running but Cooling Insufficient Unit Operates TOO Long or ContinuouslyAppendix a Wiring Diagram ListAppendix B Operation Low Ambient Option Factory InstalledTroubleshooting Appendix C38AUZ*16 & 38AUD*16 Novation 38AUZ*16/25 & 38AUD*16/25 Rtpf Motormaster Sensor LocationDimensions --- Inches Unit Baffle Wind Baffle DimensionDimensions --- MM Unit Baffle Wind Baffles Fabrication 15 Ton Wind Baffle Brackets Fabrication Front Front Back Left Right Catalog No 38AU---09SI II. PRE-START-UP Outdoor Unit START-UP ChecklistCheck Voltage Imbalance
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