Carrier 38AU appendix Operating Weight kg Novation Coil Al Tube, Rtpf Shipping Charge A/B kg

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 Carrier appendix Typical 38AUD Wiring Diagram 15 Ton 230V Dual Unit Shown Carrier 38AU appendix Operating Sequence, Base Unit Controls
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Table 2B — Physical Data — 38AUD*16-25 Units — 60 Hz SI

UNIT SIZE 38AU

D*16

D*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

R-410A

NOVATION Operating Charge A/B, Typical (kg)†

5.4 / 5.4

---

NOVATION Shipping Charge A/B (kg)

2.7 / 2.7

---

RTPF Operating Charge A/B, Typical (kg)†

10.0 / 10.0

8.6 / 8.6

RTPF Shipping Charge A/B (kg)

7.3 / 7.3

6.8 / 6.8

 

 

 

COMPRESSOR

 

 

Qty...Type

2...Scroll

2...Scroll

Oil Charge A/B (L)

1.7 / 1.7

3.2 / 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/ --- in RTPF

 

8

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

 

4347 ± 70

Cut-in

3482 ±138

3482 ±138

Low Cutout

372 ± 21

372 ± 21

Cut-in

807 ± 34

807 ± 34

 

 

 

PIPING CONNECTIONS (mm ODS)

 

 

Qty...Suction

2...34.9

 

2...34.9

Qty...Liquid

2...12.7

2...12.7

 

 

 

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

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Contents Contents Installation, Start---Up Service InstructionsSafety Considerations Installation GuidelineReplacement/Retrofit R-22 to PuronR Unit Damage Hazard InstallationUnit MchxRtpf 38AUD*25 38AUZ*25Refrigerant TYPE‡ Unit Size 38AUCompressor Condenser FansNominal Capacity kW Pressurestat Settings kPa High CutoutRtpf Shipping Charge kg ScrollRtpf Shipping Charge A/B lb Oil Charge A/B ozFace Area sq ft total Rows/Fins per inch FPI Rtpf Shipping Charge A/B kg Operating Weight kg Novation Coil Al TubeOil Charge A/B L Qty...r/s Motor Hp Nema Diameter mmU Z a 2 5 a 0 G 6 a 0 a 0 a Matching 38AU Model To Evaporator Coil InstallationJobsite Survey Do not Bury Refrigeration LinesSlab Mount Provide Safety ReliefEquivalent Lengths for Common Fittings ft Check 38AU Model with Evaporator Coil ConnectionsLiquid Lift Suction Riser38AUZ 16-25 Piping Recommendations Single-Circuit Unit Vertical Separation outdoor unit above indoor unit 38AUD 16-25 Piping Recommendations Two-Circuit UnitInsulate Suction Lines Hot Gas BypassRefrigerant Specialties Part Numbers Install Filter Driers and Moisture IndicatorsCapacity Control Liquid Line Solenoid Valve Install Liquid Line Solenoid ValveSelecting an Accumulator Make Piping ConnectionsPreliminary Charge Evacuation/DehydrationUnits with Factory-Installed Disconnect Field Power SupplyFire Hazard All UnitsElectrical 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 DataSTART-UP PRE-START-UPSystem Check Preliminary ChecksAdjust Refrigerant Charge Advanced Scroll Temperature Protection AstpUsing plotted operating point Start UnitFinal 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 SequenceService Routine System MaintenanceRefrigeration System Equipment Damage HazardField Refrigerant Access Ports Factory High-Flow 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 Repairing Novation Condenser Tube Leaks Novation Coil Cleaning and MaintenanceCoil Type Identification NOVATIONt TypeRoutine Cleaning of Round-Tube Plate Fin Rtpf Coils Replacing NOVATIONt Condenser CoilUnit Reliability Hazard Problem Solution Compressor does not RUN TroubleshootingCompressor Stops on HIGH-PRESSURE Switch Fastener Torque ValuesCompressor Running but Cooling Insufficient Problem Solution Compressor Cycles on LOW-PRESSURE SwitchUnit Operates TOO Long or Continuously System is NoisyWiring Diagram List Appendix aAppendix B Troubleshooting Low Ambient Option Factory InstalledAppendix C Operation38AUZ*16 & 38AUD*16 Novation 38AUZ*16/25 & 38AUD*16/25 Rtpf Motormaster Sensor LocationWind 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 II. PRE-START-UP Outdoor Unit START-UP ChecklistCheck Voltage Imbalance
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