Carrier 38AU appendix U Z a 2 5 a 0 G 6 a 0 a 0 a

Page 10

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18

3 8 A U Z A 2 5 A 0 G 6 A 0 A 0 A 0

38AU

Model Type

38AU= Carrier Condensing Unit Puron® R--- 410A Refrigerant

Type of Coil

Z = Single Circuit, A/C Scroll Compressor D = Dual Circuit, A/C Scroll Compressor

Refrigerant Options

A = None

B = Low Ambient

Nominal Tonnage

16 = 15 Tons

25 = 20 Tons

Not Used

A = Not Used

Not Used

0 = Not Used

Packaging

0 = Standard

1 = LTL

Electrical Options

A = None

C = Non-Fused Disconnect

Service Options

0 = None

1 = Un-powered Convenience Outlet

2 = Powered Convenience Outlet

Not Used

A = Place Holder

Base Unit Controls

0 = Electro-Mechanical Controls

Design Rev

A = Initial Release

Voltage

1

= 575/3/60

5

= 208/230/3/60

6

= 460/3/60

Coil Options

RTPF (Sizes 16 & 25)

NOVATION™ (Size 16 only)

G= Al/Al

A= Cu/Al

K = E-Coat Al/Al

B = Precoat (Cu/Al)

T = Al/Al with Hail Guard

C = E-Coat (Cu/Al)

W= E-Coat Al/Al with Hail Guard

M= Cu/Al with Hail Guard

 

N = Precoat (Cu/Al) with Hail Guard

 

P = E-Coat (Cu/Al) with Hail Guard

C10944

Fig. 3 - Model Number Nomenclature

POSITION NUMBER

 

 

1

 

2

3

 

4

 

5

6

 

7

 

8

9

10

TYPICAL

 

 

0

 

5

1

 

0

 

U

1

 

2

 

3

4

5

 

POSITION

 

 

 

 

 

DESIGNATES

 

 

 

 

 

 

1

– 2

 

 

 

Week of manufacture (fiscal calendar)

 

 

 

 

3

– 4

 

 

 

 

Year of manufacture ("10" = 2010)

 

 

 

 

 

 

5

 

 

 

Manufacturing location (U = Monterrey, Mexico)

 

 

 

 

6 – 10

 

 

 

 

 

Sequence number

 

 

 

 

 

C101041

Fig. 4 - Serial Number Nomenclature

10

Image 10
Contents Installation, Start---Up Service Instructions ContentsInstallation Guideline Safety ConsiderationsReplacement/Retrofit R-22 to PuronR Installation Unit Damage HazardMchx UnitRtpf 38AUZ*25 38AUD*25Compressor Unit Size 38AURefrigerant TYPE‡ Condenser FansRtpf Shipping Charge kg Pressurestat Settings kPa High CutoutNominal Capacity kW ScrollOil Charge A/B oz Rtpf Shipping Charge A/B lbFace 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 ConnectionsSuction Riser Liquid Lift38AUZ 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 HazardFactory High-Flow Access Ports Field Refrigerant 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 TypeReplacing NOVATIONt Condenser Coil Routine Cleaning of Round-Tube Plate Fin Rtpf CoilsUnit 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 NoisyAppendix a Wiring Diagram ListAppendix B Appendix C Low Ambient Option Factory InstalledTroubleshooting OperationMotormaster Sensor Location 38AUZ*16 & 38AUD*16 Novation 38AUZ*16/25 & 38AUD*16/25 RtpfDimensions --- 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 START-UP Checklist II. PRE-START-UP Outdoor UnitCheck Voltage Imbalance