Carrier 38AU Installation, Start-up And Service Instructions Manual

Also see for 38AU: Installation, Start-Up and Service Instructions Installation, Start-Up and Service Instructions

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Installation, Start-Up andService InstructionsCONTENTSSAFETY CONSIDERATIONS . . . . . . . . . . . . . . . . . . . . . . . 1INSTALLATION GUIDELINES. . . . . . . . . . . . . . . . . . . . . . . 2INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-16Step 1 – Plan for Unit Location . . . . . . . . . . . . . . . . . . . 9Step 2 – Complete Pre-Installation Checks. . . . . . . . . . 9Step 3 – Prepare Unit Mounting Support . . . . . . . . . . 9Step 4 – Rig and Mount the Unit . . . . . . . . . . . . . . . . . . 9Step 5 – Complete Refrigerant Piping Connections . . . 9Step 6 – Install Accessories. . . . . . . . . . . . . . . . . . . . . . 11Step 7 – Complete Electrical Connections . . . . . . . . . 12PRE-START-UP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17System Check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17Turn On Crankcase Heater . . . . . . . . . . . . . . . . . . . . . . 17Preliminary Charge. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17START-UP. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 -2338AU Units . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19OPERATING SEQUENCE. . . . . . . . . . . . . . . . . . . . . . . . . . 24Indoor (Supply) Fan . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24Cooling, Unit Without Economizer . . . . . . . . . . . . . . . . 24Cooling, Unit With Economizer . . . . . . . . . . . . . . . . . . . 24Heating. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24ROUTINE SYSTEM MAINTENANCE. . . . . . . . . . . . . . . 24Quarterly Inspection (and 30 days after initial start) . . 24Seasonal Maintenance . . . . . . . . . . . . . . . . . . . . . . . . 24SERVICE. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .25 - 30Comfort Alert Diagnostic Module. . . . . . . . . . . . . . . 25Crankcase Heater . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27Compressor Protection. . . . . . . . . . . . . . . . . . . . . . . . . . 27Low-Pressure Switches . . . . . . . . . . . . . . . . . . . . . . . . . 27High-Pressure Switches. . . . . . . . . . . . . . . . . . . . . . . . . 27Outdoor Fans. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27Lubrication . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27NOVATION™ Coil Cleaning and Maintenance . . . . 28Repairing NOVATION Condenser Tube Leaks. . . . . 28Replacing NOVATION Condenser Coil . . . . . . . . . . 28Field Refrigerant Access Ports . . . . . . . . . . . . . . . . . 28Factory High-Flow Access Ports . . . . . . . . . . . . . . . . 28Fastener Torque Values . . . . . . . . . . . . . . . . . . . . . . . 29TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . 30 -31APPENDIX . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32Air Conditioner and Heat Pump with Puron® –Quick Reference Guide . . . . . . . . . . . . . . . . . . . . . . . 32START-UP CHECKLIST . . . . . . . . . . . . . . . . . . . .CL-1, CL-2SAFETY CONSIDERATIONSImproper installation, adjustment, alteration, service,maintenance, or use can cause explosion, fire, electrical shockor other conditions which may cause personal injury orproperty damage. Consult a qualified installer, service agency,or your distributor or branch for information or assistance. Thequalified installer or agency must use factory-authorized kits oraccessories when modifying this product. Refer to theindividual instructions packageFollow all safety codes. Wear safety glasses and work gloves.Use quenching cloths for brazing operations and have a fireextinguisher available. Read these instructions thoroughly andfollow all warnings or cautions attached to the unit. Consultlocal building codes and appropriate national electrical codes(in USA, ANSI/NFPA70, National Electrical Code (NEC); inCanada, CSA C22.1) for special requirements.It is important to recognize safety information. This is thesafety-alert symbol . When you see this symbol on the unitand in instructions or manuals, be alert to the potential forpersonal injury.Understand the signal words DANGER, WARNING,CAUTION, and NOTE. These words are used with the safety-alert symbol. DANGER identifies the most serious hazardswhich will result in severe personal injury or death.WARNING signifies hazards which could result in personalinjury or death. CAUTION is used to identify unsafe practices,which may result in minor personal injury or product andproperty damage. NOTE is used to highlight suggestionswhich will result in enhanced installation, reliability, oroperation.38AUAir-Cooled Condensing Units60 Hzwith Puron® (R-410A) RefrigerantSizes 07 – 14