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appendix 38AUD*16 Charging Chart Novation, Circuit, C10946
Models:
38AU
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26
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Troubleshooting
Install
38AUZ*16 Charging Chart Novation
Dimension
Maintenance
Power Wiring Connections
Comfort Alert Diagnostic Module
Typical Piping Connection Assembly
Adjust Refrigerant Charge
Unbalanced 3-PhaseSupply Voltage
Page 26
Image 26
38AU
(CIRCUIT 1)
(CIRCUIT 2)
C10946
Fig. 24 - 38AUD*16 Charging Chart (Novation)
26
Page 25
Page 27
Page 26
Image 26
Page 25
Page 27
Contents
38AU Air Cooled Condensing Units 60 Hz
CONTENTS
Installation, Start---Upand Service Instructions
With PuronR R---410ARefrigerant Sizes
Replacement/Retrofit - R-22to PuronR
SAFETY CONSIDERATIONS
INSTALLATION GUIDELINE
UNIT OPERATION AND SAFETY HAZARD
38AU
Installation
UNIT DAMAGE HAZARD
Fig. 1 - 38AU**16 Unit Dimensions
38AU
UNIT
Fig. 2 - 38AU**25 Unit Dimensions
38AU
38AUZ*25
38AU
UNIT SIZE 38AU
38AU
UNIT SIZE 38AU
38AU
UNIT SIZE 38AU
38AU
UNIT SIZE 38AU
Fig. 4 - Serial Number Nomenclature
3 8 A U Z A 2 5 A 0 G 6 A 0 A 0 A
Fig. 3 - Model Number Nomenclature
38AU
Fig. 5 - Service Clearance Dimensional Drawing
INSTALLATION
Step 2 - Complete Pre-InstallationChecks
Matching 38AU Model To Evaporator Coil
Step 4 - Rig and Mount the Unit
Provide Safety Relief
Step 3 - Prepare Unit Mounting Support
Step 5 - Complete Refrigerant Piping Connections
38AU
Liquid Lift
Suction Riser
Model
38AUD Piping Connections
Insulate Suction Lines
Hot Gas Bypass
38AU
Fig. 7 - Typical Evaporator Coil Connections 40RU
Fig. 6 - 38AUD Service Valve Locations
Install Filter Driers and Moisture Indicators
Puron-dutyFilter Driers
Typical 38AUD Systems
Install Liquid Line Solenoid Valve
Typical 38AUZ Systems
Capacity Control Liquid Line Solenoid Valve
Evacuation/Dehydration
Step 6 - Install Accessories
Fig. 10 - Typical Piping Connection Assembly
Preliminary Charge
Units Without Factory-InstalledDisconnect
Field Power Supply
Fig. 11 - Disconnect Switch and Unit
Units with Factory-InstalledDisconnect
Convenience Outlets
Fig. 12 - Power Wiring Connections
Fig. 14 - Powered Convenience Outlet Wiring
ELECTRICAL OPERATION HAZARD
Convenience Outlet Utilization
Fig. 16 - Weatherproof Cover Installation
Field Control Wiring
38AU
Fig. 19 - Control Transformer Wiring
38AUD Control Circuit Wiring
Control Transformer Wiring
Thermostat
Legend and Notes for Table
5.Unbalanced 3-PhaseSupply Voltage
38AU
START-UP
To correct phase order
PRE-START-UP
System Check
Using plotted operating point
Advanced Scroll Temperature Protection ASTP
Adjust Refrigerant Charge
Start Unit
Fig. 22 - Recommended Oil Level - 38AUZ*25
Fig. 23 - 38AUZ*16 Charging Chart Novation
38AUZ*25 Check Compressor Oil Level
Final Checks
CIRCUIT
Fig. 24 - 38AUD*16 Charging Chart Novation
38AU
CIRCUIT
38AU
Fig. 25 - 38AUZ*16 Charging Chart RTPF
Fig. 26 - 38AUZ*25 Charging Chart RTPF
C10947
C10949
Fig. 27 - 38AUD*16 Charging Chart RTPF
38AU
C10950
Fig. 28 - 38AUD*25 Charging Chart RTPF
38AU
38AU
C10212A
38AU
C10213A
Indoor Supply Fan
OPERATING SEQUENCE
Base Unit Controls
Cooling, Unit Without Economizer
Seasonal Maintenance
ROUTINE SYSTEM MAINTENANCE
SERVICE
Synthetic Roof Precautionary Procedure
Fig. 31 - CoreMax Access Port Assembly
Field Refrigerant Access Ports
Factory High-FlowAccess Ports
SEAT
38AU
Comfort Alert Diagnostic Module
Fig. 32 - CADM Housing/LED Locations
38AU
Table 11 - LED Status Codes
Status LED Troubleshooting Information
Status LED
Low-PressureSwitch
Table 12 - CADM Troubleshooting
Compressor Overtemperature Protection IP
High-PressureSwitch
Fig. 34 - 38AUD Size 16 Cabinet
Condenser Fans/Motors Access Panel Control Box
Compressors Service Valves
Fig. 35 - 38AUD*16 Piping
Equalization LPS
Fig. 36 - 38AUZ*16 Compressor Assembly Rear View
Fig. 37 - 38AUD*16 Compressor Assembly Rear View
Oil Equalizer Line
Condenser Fans/Motors Access Panel Control Box
Fig. 38 - 38AUZ,D Size 25 Cabinet
Fig. 39 - 38AUD*25 Piping
Compressors Service Valves
38AU
Fig. 40 - 38AUZ*25 Compressor Assembly Rear View
Fig. 41 - 38AUD*25 Compressor Assembly Rear View
C10215
Coil Type Identification
NOVATION Coil Cleaning and Maintenance
Repairing NOVATION Condenser Tube Leaks
NOVATIONt Type
UNIT DAMAGE HAZARD
Replacing NOVATIONt Condenser Coil
UNIT RELIABILITY HAZARD
38AU
Table 13 - Torque Values
TROUBLESHOOTING
FASTENER TORQUE VALUES
38AU
TROUBLESHOOTING cont
38AU
APPENDIX B
Wiring Diagram List
APPENDIX A
Air Conditioner & Heat Pump with PURON→
APPENDIX C
Low Ambient Option - Factory Installed
Troubleshooting
Operation
38AUZ*16 & 38AUD*16 Novation
Fig. 44 - Motormaster Sensor Location
Fig. 45 - Motormaster Sensor Location
38AUZ*16/25 & 38AUD*16/25 RTPF
Table 14 - Wind Baffle Dimension
38AU
C10363A
Fig. 46 - Wind Baffles - Fabrication
38AU
38AU
C10366
LEFT
Fig. 48 - Wind Baffle Installation - 15 Ton Units
FRONT
BACK
BACK
Fig. 49 - Wind Baffle Installation - 20 Ton Units
FRONT
LEFT
Edition Date 11/10
38AU
Catalog No 38AU---09SI
Replaces 38AU---07SI
II. PRE-START-UP
START-UPCHECKLIST
I. PRELIMINARY INFORMATION
OUTDOOR UNIT
CHECK VOLTAGE IMBALANCE
38AU