Carrier 38AUZ appendix Contents, Safety Considerations

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38AUZ

Air-Cooled Condensing Units 60 Hz

with Puron® (R-410A) Refrigerant Sizes 07, 08, 12, 14

Installation, Start-Up and

Service Instructions

CONTENTS

SAFETY CONSIDERATIONS . . . . . . . . . . . . . . . . . . . . . . . 1 INSTALLATION GUIDELINES. . . . . . . . . . . . . . . . . . . . . . . 2 INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-13 Step 1 — Plan for Unit Location . . . . . . . . . . . . . . . . . . 7 Step 2 — Complete Pre-Installation Checks. . . . . . . . . 7 Step 3 — Prepare Unit Mounting Support . . . . . . . . . 7 Step 4 — Rig and Mount the Unit . . . . . . . . . . . . . . . . . 7 Step 5 — Complete Refrigerant Piping Connections . 7 Step 6 — Install Accessories . . . . . . . . . . . . . . . . . . . . . 9 Step 7 – Complete Electrical Connections . . . . . . . . . . 9 PRE-START-UP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 System Check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 Turn On Crankcase Heater . . . . . . . . . . . . . . . . . . . . . . 14 Preliminary Charge. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 START-UP. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 -18 38AUZ Units. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 OPERATING SEQUENCE. . . . . . . . . . . . . . . . . . . . . . . . . . 18 Cooling. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 Heating. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 ROUTINE SYSTEM MAINTENANCE. . . . . . . . . . . . . . . 18 Quarterly Inspection (and 30 days after initial start) . 18 Seasonal Maintenance . . . . . . . . . . . . . . . . . . . . . . . . 18 SERVICE. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19 - 23 Comfort Alert Diagnostic Module. . . . . . . . . . . 19 - 21 Crankcase Heater . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21 Compressor Protection. . . . . . . . . . . . . . . . . . . . . . . . . . 21 Low-Pressure Switches . . . . . . . . . . . . . . . . . . . . . . . . . 21 High-Pressure Switches. . . . . . . . . . . . . . . . . . . . . . . . . 21 Outdoor Fans. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21 Lubrication . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21 NOVATION™ Coil Cleaning and Maintenance . . . . 22 Repairing NOVATION Condenser Tube Leaks. . . . . 22 Replacing NOVATION Condenser Coil . . . . . . . . . . 22 Field Refrigerant Access Ports . . . . . . . . . . . . . . . . . 22 Factory High-Flow Access Ports . . . . . . . . . . . . . . . . 22 Fastener Torque Values . . . . . . . . . . . . . . . . . . . . . . . 23 TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . 23, 24 APPENDIX . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

Air Conditioner and Heat Pump with Puron® — Quick Reference Guide . . . . . . . . . . . . . . . . . . . . . . . 25

START-UP CHECKLIST . . . . . . . . . . . . . . . . . . . CL-1, CL-2

SAFETY CONSIDERATIONS

Improper installation, adjustment, alteration, service, maintenance, or use can cause explosion, fire, electrical shock or other conditions which may cause personal injury or property damage. Consult a qualified installer, service agency, or your distributor or branch for information or assistance. The qualified installer or agency must use factory-authorized kits or accessories when modifying this product. Refer to the individual instructions package

Follow all safety codes. Wear safety glasses and work gloves. Use quenching cloths for brazing operations and have a fire extinguisher available. Read these instructions thoroughly and follow all warnings or cautions attached to the unit. Consult local building codes and appropriate national electrical codes (in USA, ANSI/NFPA70, National Electrical Code (NEC); in Canada, CSA C22.1) for special requirements.

It is important to recognize safety information. This is the safety-alert symbol . When you see this symbol on the unit and in instructions or manuals, be alert to the potential for personal injury.

Understand the signal words DANGER, WARNING, CAUTION, and NOTE. These words are used with the safety- alert symbol. DANGER identifies the most serious hazards which will result in severe personal injury or death. WARNING signifies hazards which could result in personal injury or death. CAUTION is used to identify unsafe practices, which may result in minor personal injury or product and property damage. NOTE is used to highlight suggestions which will result in enhanced installation, reliability, or operation.

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Contents Safety Considerations ContentsReplacement /Retrofit R22 to Puron Installation Guideline38AUZ*07-14 Unit Dimensions Refrigerant Type Unit Size 38AUCompressor Condenser FansPressurestat Settings kPa High Cutout Operating Weight kg Aluminum-Fin Coils StandardNominal Capacity kW Operating Charge, Typical kg† Shipping Charge kgModel Type Service OptionsType of Coil Refrigerant OptionsInstallation Refrigerant Piping Sizes 38AUZ*07-14 60 Hz Units Liquid Line Data 38AUZ*07-14 60 Hz UnitsField Power Supply Install AccessoriesComplete Electrical Connections Refrigerant Specialities Part NumbersUnits with Factory-Installed Disconnect Units Without Factory-Installed DisconnectConvenience Outlets All unitsUnit Connect Primary Transformer Installing Weatherproof CoverConnections Terminals Thermostat Weatherproof Cover InstallationElectrical Data 38AUZ*07-14 Hz Units START-UP PRE-START-UPSystem Check Advanced Scroll Temperature Protection Label 38AUZ*07 Charging Chart 38AUZ*14 Charging Chart Operating Sequence Routine System MaintenanceBase Unit Controls Comfort Alert Diagnostic Module ServiceInput Lockout LED Status CodesCompressor Protection Cadm TroubleshootingLubrication Repairing Novation Condenser Tube Leaks Novation Coil Cleaning and MaintenanceField Refrigerant Access Ports Factory High-Flow Access PortsProblem 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 NoisyAppendix Catalog No 38AU-01SI Preliminary Information CUT Along Dotted Linecut Along Dotted Line

38AUZ specifications

The Carrier 38AUZ series is a line of air conditioning systems specifically designed to deliver optimal comfort and energy efficiency for both residential and commercial applications. Known for their advanced technology and robust performance, these units are ideal for a variety of climate conditions, ensuring consistent cooling and heating throughout the year.

One of the standout features of the Carrier 38AUZ series is its inverter technology, which allows the unit to adjust its cooling or heating output in real-time based on the ambient conditions. This results in lower energy consumption and reduced operating costs, making the system not only environmentally friendly but also budget-conscious. By minimizing temperature fluctuations, the inverter design promotes a more stable and comfortable indoor environment.

The 38AUZ units are equipped with high-efficiency compressors that enhance the system’s performance. These compressors operate quietly and efficiently, contributing to a lower noise level that is ideal for residential settings. Furthermore, they come with variable speed fan motors which offer precise airflow control, allowing users to customize their comfort level while ensuring energy savings.

In terms of build quality, the Carrier 38AUZ is constructed using durable materials designed to withstand harsh weather conditions. Its compact design allows for easy installation and maintenance, making it an ideal choice for urban environments where space is limited. Additionally, the system features a corrosion-resistant cabinet that extends its lifespan and maintains aesthetic appeal.

The 38AUZ series also includes a range of advanced control options. Users can benefit from smart technology integration, allowing for remote temperature control and scheduling through mobile devices. This feature not only enhances convenience but also provides users with complete control over their energy usage.

Moreover, the Carrier 38AUZ units come with various capacity options, catering to different space requirements. With a focus on energy efficiency, these systems often meet or exceed industry standards, including SEER ratings, ensuring optimal performance without sacrificing energy consumption.

In summary, the Carrier 38AUZ series is an exemplary choice for anyone looking to invest in a reliable, efficient, and advanced air conditioning system. With its inverter technology, high-efficiency compressors, smart control options, and durable construction, the 38AUZ not only delivers exceptional comfort but also promotes energy conservation, making it a smart choice for sustainable living.
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