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appendix
38AUZ*16 Charging Chart Rtpf
Models:
38AU
1
27
56
56
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Troubleshooting
Install
38AUZ*16 Charging Chart Rtpf
Field Control Wiring
Dimension
Maintenance
Field Refrigerant Access Ports
Adjust Refrigerant Charge
Checklist
Safety
Page 27
Image 27
38AU
C10947
Fig. 25 - 38AUZ*16 Charging Chart (RTPF)
C10948
Fig. 26 - 38AUZ*25 Charging Chart (RTPF)
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Page 27
Image 27
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Page 28
Contents
Contents
Installation, Start---Up Service Instructions
Safety Considerations
Installation Guideline
Replacement/Retrofit R-22 to PuronR
Unit Damage Hazard
Installation
Unit
Mchx
Rtpf
38AUD*25
38AUZ*25
Condenser Fans
Unit Size 38AU
Refrigerant TYPE‡
Compressor
Scroll
Pressurestat Settings kPa High Cutout
Nominal Capacity kW
Rtpf Shipping Charge kg
Rtpf Shipping Charge A/B lb
Oil Charge A/B oz
Face Area sq ft total Rows/Fins per inch FPI
Qty...r/s Motor Hp Nema Diameter mm
Operating Weight kg Novation Coil Al Tube
Rtpf Shipping Charge A/B kg
Oil Charge A/B L
U Z a 2 5 a 0 G 6 a 0 a 0 a
Do not Bury Refrigeration Lines
Installation
Matching 38AU Model To Evaporator Coil
Jobsite Survey
Check 38AU Model with Evaporator Coil Connections
Provide Safety Relief
Slab Mount
Equivalent Lengths for Common Fittings ft
Liquid Lift
Suction Riser
38AUZ 16-25 Piping Recommendations Single-Circuit Unit
Hot Gas Bypass
38AUD 16-25 Piping Recommendations Two-Circuit Unit
Vertical Separation outdoor unit above indoor unit
Insulate Suction Lines
Refrigerant Specialties Part Numbers
Install Filter Driers and Moisture Indicators
Make Piping Connections
Install Liquid Line Solenoid Valve
Capacity Control Liquid Line Solenoid Valve
Selecting an Accumulator
Preliminary Charge
Evacuation/Dehydration
All Units
Field Power Supply
Units with Factory-Installed Disconnect
Fire Hazard
Electrical Operation Hazard
Convenience Outlets
Convenience Outlet Utilization Notice Label
Field Control Wiring
Thermostat
Control Transformer Wiring
Unbalanced 3-Phase Supply Voltage
Unit Wire/Fuse or Hacr Breaker Sizing Data
Preliminary Checks
PRE-START-UP
START-UP
System Check
Start Unit
Advanced Scroll Temperature Protection Astp
Adjust Refrigerant Charge
Using plotted operating point
Final Checks
38AUZ*25 Check Compressor Oil Level
38AUD*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 Sequence
Equipment Damage Hazard
Routine System Maintenance
Service
Refrigeration System
Field Refrigerant Access Ports
Factory High-Flow Access Ports
Liquid Line Filter Drier
Input Terminal Voltage
Comfort Alert Diagnostic Module
Lockout
LED Status Codes
Compressor Protection
38AUD Size 16 Cabinet
LPS
38AUZ,D Size 25 Cabinet
38AUZ*25 Compressor Assembly Rear View
NOVATIONt Type
Novation Coil Cleaning and Maintenance
Repairing Novation Condenser Tube Leaks
Coil Type Identification
Routine Cleaning of Round-Tube Plate Fin Rtpf Coils
Replacing NOVATIONt Condenser Coil
Unit Reliability Hazard
Fastener Torque Values
Troubleshooting
Problem Solution Compressor does not RUN
Compressor Stops on HIGH-PRESSURE Switch
System is Noisy
Problem Solution Compressor Cycles on LOW-PRESSURE Switch
Compressor Running but Cooling Insufficient
Unit Operates TOO Long or Continuously
Wiring Diagram List
Appendix a
Appendix B
Operation
Low Ambient Option Factory Installed
Troubleshooting
Appendix C
38AUZ*16 & 38AUD*16 Novation 38AUZ*16/25 & 38AUD*16/25 Rtpf
Motormaster Sensor Location
Wind Baffle Dimension
Dimensions --- Inches Unit Baffle
Dimensions --- 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 Checklist
Check Voltage Imbalance
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