Carrier 48TC 07 Installation, Start-up And Service Instructions Manual

Also see for 48TC 17 Series: Service and maintenance instructions

Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.Catalog No. 04-53480483-01 Printed in U.S.A. Form No. VFD-12SI Pg 1 1-24 Replaces: VFD-11SIInstallation, Start-Up and Service InstructionsNOTE: Read the entire instruction manual before starting theinstallation.CONTENTSPageSAFETY CONSIDERATIONS . . . . . . . . . . . . . . . . . . . 1GENERAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2Staged Air Volume (SAV™) Indoor Fan Speed System . . . . . . . . . . . . . . . . . . . 2Identifying Factory Option . . . . . . . . . . . . . . . . . . . . . 2Unit Installation with SAV Option . . . . . . . . . . . . . . . 3Pre-Start Check, SAV™ Option . . . . . . . . . . . . . . . . . 5START-UP, SAV™ OPTION . . . . . . . . . . . . . . . . . . . 16Compressor Rotation . . . . . . . . . . . . . . . . . . . . . . . . 16Indoor Fan Motor . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16Cooling with SAV . . . . . . . . . . . . . . . . . . . . . . . . . . . 16Operating Sequences, SAV Option . . . . . . . . . . . . . 16Cooling (FAN Switch in AUTO) . . . . . . . . . . . . . . . . 16Heating . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16Operating Fan for Test and Balance . . . . . . . . . . . . 17SERVICE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18SAV™ Option Components . . . . . . . . . . . . . . . . . . . 18Fan Speed Relay Board . . . . . . . . . . . . . . . . . . . . . . 18Configuration Jumpers . . . . . . . . . . . . . . . . . . . . . . . 18Variable Frequency Drive . . . . . . . . . . . . . . . . . . . . . 18Central Terminal Board Jumpers (48/50 Series Only) . . . . . . . . . . . . . . . . . . . . . . . . 20VFD Fuses . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21Control and Power Wiring Diagrams . . . . . . . . . . . . 22VFD ALARMS AND FAULTS TROUBLESHOOTING . 29Alarms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29Faults . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29VFD MAINTENANCE . . . . . . . . . . . . . . . . . . . . . . . . . 30Heat Sink Cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . 30Fan Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . 31Bypass the VFD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33VFD PARAMETERS . . . . . . . . . . . . . . . . . . . . . . . . . . 35ACH550/580 VFD Common Parameters for 48/50 Unitswith I/O Flex Controls . . . . . . . . . . . . . . . . . . . . . . 55VFD REMOTE KEYPAD . . . . . . . . . . . . . . . . . . . . . . . 63ACH550/ACS320 Operation with Remote Keypad . 63ACH550/ACS320 VFD Modes . . . . . . . . . . . . . . . . . . 63ACH550/ACS320 VFD Diagnostics . . . . . . . . . . . . . 65Correcting Faults . . . . . . . . . . . . . . . . . . . . . . . . . . . 65History . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .65Reset After Using Start-Up Assistant . . . . . . . . . . .68ACH580 Operation with Remote Keypad . . . . . . . .69ACH580 VFD Modes . . . . . . . . . . . . . . . . . . . . . . . . .70ACH580 VFD Diagnostics . . . . . . . . . . . . . . . . . . . . .72ALL ACH580, ACH550 AND ACH320 KEYPADS . . .75Control Panel Cleaning . . . . . . . . . . . . . . . . . . . . . . .75Battery Replacement . . . . . . . . . . . . . . . . . . . . . . . . .75VFD Remote Keypad Parameters . . . . . . . . . . . . . . .75SAFETY CONSIDERATIONSImproper installation, adjustment, alteration, service, mainte-nance, or use can cause explosion, fire, electrical shock or otherconditions which may cause personal injury or property damage.Consult a qualified installer, service agency, or your distributor orbranch for information or assistance. The qualified installer oragency must use factory-authorized kits or accessories when mod-ifying this product. Refer to the individual instructions packagedwith the kits or accessories when installing.Follow all safety codes. Wear safety glasses and work gloves. Usequenching cloths for brazing operations and have a fire extin-guisher available. Read these instructions thoroughly and followall warnings or cautions attached to the unit. Consult local build-ing 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 in-structions 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 insevere personal injury or death. WARNING signifies hazardswhich could result in personal injury or death. CAUTION is usedto identify unsafe practices, which may result in minor personalinjury or product and property damage.NOTE is used to highlight suggestions which will result inenhanced installation, reliability, or operation.This document provides supplemental installation, setup and troubleshooting information for theVariable Frequency Drive (VFD) factory-installed option. It is to be used with the base unit InstallationInstructions for 48/50TC, 50TCQ, 48/50HC, 50HCQ, and 40RU 2-Stage cooling units with a VFD fanspeed relay board, sizes 07-30. Units equipped with the VFD are identified by an indicator in the unit'smodel number (see the unit's nameplate). Use Table 1 to identify whether a given unit is equipped withthe factory-installed VFD option.CAUTIONCONFIGURATION OVERRIDE HAZARDDo not use ABB or Carrier start-up assistant on this VFDapplication. Use of start-up assistant will override the factoryVFD configurations.Variable Frequency Drive (VFD)Factory-Installed Option2-Speed Motor Controlfor 2-Stage Cooling Rooftop Units