Carrier Unit Size 38AU, Refrigerant TYPE‡, Compressor, Condenser Fans, Rtpf Condenser Coil

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
Page 6

38AU

Table 1A — Physical Data — 38AUZ*16-25 Units — 60 Hz English

UNIT SIZE 38AU

Z*16

 

 

 

Z*25

 

 

 

 

 

 

NOMINAL CAPACITY (tons)

15

 

 

 

20

 

 

 

 

 

 

OPERATING WEIGHTS (lb)

 

 

 

 

 

NOVATION™ Coil (Al Tube)

633

 

 

 

---

 

 

 

Round Tube/Plate Fin Coil (Cu/Al)

731

 

 

 

900

 

 

 

 

 

 

REFRIGERANT TYPE‡

 

R-410A

 

 

NOVATION Operating Charge, Typical (lb)†

24.6

 

 

 

---

NOVATION Shipping Charge (lb)

12.2

 

 

 

---

RTPF Operating Charge, Typical (lb)†

43.0

 

 

 

38.0

RTPF Shipping Charge (lb)

32.0

 

 

 

28.0

 

 

 

 

 

 

COMPRESSOR

 

 

 

 

 

Qty...Type

2...Scroll

 

 

2...Scroll

 

 

Oil Charge (oz)

60

 

 

 

110

 

 

 

 

 

 

CONDENSER FANS

 

 

 

 

 

Qty...Rpm

3...1100

 

 

4...1100

 

 

Motor Hp

1/4

 

 

 

1/4

Diameter

22

 

 

 

22

Nominal Airflow (Cfm Total)

9,000

 

 

12,000

Watts (Total)

970

 

 

 

1150

 

 

 

 

 

 

RTPF CONDENSER COIL

 

 

 

 

 

Material (Tube/Fin)

Cu / Al

 

 

Cu / Al

 

 

Coil Type

3/ --- in RTPF

 

3/

8

--- in RTPF

 

8

 

 

 

Rows/Fins per inch (FPI)

2 / 17

 

 

 

2 / 17

Face Area (sq ft total)

47.0

 

 

 

50.0

 

 

 

 

 

 

NOVATION CONDENSER COIL

 

 

 

 

 

Material (Tube/Fin)

Al / Al

 

 

 

---

 

 

 

Coil Type

Novation

 

 

 

---

Rows/Fins per inch (FPI)

1 / 17

 

 

 

---

Face Area (sq ft total)

50.0

 

 

 

---

 

 

 

 

 

 

CONTROLS

 

 

 

 

 

Pressurestat Settings (psig)

 

 

 

 

 

High Cutout

630 ± 10

 

 

Cut-in

505 ± 20

 

 

Low Cutout

 

54 ± 3

 

 

Cut-in

117 ± 5

 

 

 

 

 

 

 

 

PIPING CONNECTIONS (in. ODS)

 

 

 

 

 

Qty...Suction

1...13/8

 

 

1...15/8

 

 

Qty...Liquid

1...5/8

 

 

 

1...5/8

LEGEND

RTPF — Round Tube/Plate Fin

ODS — Outside Diameter Sweat (socket)

‡Unit is factory-supplied with partial charge only.

†Typical operating charge with 25 ft of interconnecting piping.

6

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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
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