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This is the original issue of this manual. It provides specific installation, owner maintenance, and diagnostic troubleshooting instructions for “BO” and later design sequences. The “BO” design sequence includes the VFD option change from Square D Altivar 66 to Altivar 58. For information on previous design sequences, contact your local Trane representative. Warnings and Cautions Warnings in this manual indicate potential hazardous situations that can result in death or serious injury. Cautions in this manual indicate potential hazardous situations that may result in minor or moderate injury and/or equipment damage. Examples: WARNING! Disconnect electrical power source before servicing unit to prevent injury or death from electrical shock. CAUTION! Use only copper conductors for electrical unit connections to prevent equipment damage. Common HVAC Acronyms For convenience, a number of acronyms and abbreviations are used throughout this manual. These acronyms are alphabetically listed and defined below. BAS = Building automation systems CFM = Cubic-feet-per-minute CKT. = Circuit CV = Constant volume CW = Clockwise CCW = Counterclockwise E/A = Exhaust air General Information ECEM = Exhaust/comparative enthalpy module F/A = Fresh air GBAS = Generic building automation system HGBP = Hot gas bypass HI = Human Interface HVAC = Heating, ventilation and air conditioning IGV = Inlet guide vanes I/O = Inputs/outputs IOD= Installation/owner/diagnostic manual IPC = Interprocessor communications IPCB = Interprocessor communications bridge LH = Left-hand MCM = Multiple compressor module MWU = Morning warmup NSB = Night setback O/A = Outside air psig = Pounds-per-square-inch, gauge pressure R/A = Return air RH = Right-hand RPM = Revolutions-per-minute S/A = Supply air SCM = Single circuit module SZ = Single-zone (unit airflow) TCI =Tracer® communications module UCM = Unit control modules VAV = Variable air volume VCM =Ventilation control module VOM =Ventilation override module w.c. = Water column WSM = Waterside module ZSM = Zone sensor module Special Note on Refrigeration Emissions World environmental scientists have concluded that ozone in our upper atmosphere is being reduced due to the release of CFC fully halogenated compounds. TheTrane Company urges all HVAC service personnel to make every effort to prevent any refrigerant emissions while installing, operating, or servicing equipment. Always conserve refrigerants for continued use. ©American Standard Inc. 2000 SCXG-SVX01B-EN Contents Cross reference to related publications/information: IntelliPak®Self-Contained Programming Guide, PKG-SVP01B-EN Remote Air-Cool-Condenser Installation, Owner, and Diagnostic Manual, CXRCSVX01A- EN Installation General Information Pre-installation Considerations Dimensions/Weights Mechanical Requirements Electrical Requirements Pre-Startup Requirements Programming Startup Owner 2 9 17 33 37 39 64 74 77 General Information Sequence of Operation Maintenance Diagnostic Troubleshooting Troubleshooting Diagnostics 77 91 98 111 111 112 SCXG-SVX01B-EN General Installation Information Modular Series Self-Contained Unit Components Commercial self contained units are complete HVAC systems used in floor-byfloor applications. Units are easy to install because they feature a single point power connection, factory installed and tested controls, single water point connection, factory installed options, and an internally trapped drain connection. Modular self-contained units can ship as split-apart units for installation ease. Split- apart units ship with a dry nitrogen charge and require field refrigerant charging. Units consist of multiple compressors, water-cooled condensers (water-cooled units only), an evaporator coil, dual forward curved fans, and control panel. Air-cooled units require a remote air- cooled condenser, model CXRC. The hermetically sealed 3-D scroll compressor motors utilize internal motor protection and time delays to prevent excessive cycling. Unit controls are either an electromechanical thermostat or microprocessor controls on the IntelliPak unit. See Figure I-GI-1 for a typical unit. The hermetically sealed 3-D scroll compressor motors utilize internal motor protection and time delays to prevent excessive cycling. The water-cooled condensers are shell and tube type with an internal subcooler. Condensers are available as mechani cally or chemically cleanable. The evaporator fan is double width, double inlet and forward curved with a fixed pitch belt drive assembly. Frequency drives or inlet guide vanes are optional. Motor options are standard efficiency open drip proof (ODP) or totally enclosed fan cooled (TEFC); or premium efficiency ODP. All water-cooled units ship with a full refrigerant and oil charge. Air-cooled units ship with oil and a dry nitrogen holding charge and require field-piping refrigerant connections to the air cooled condensing unit. Also, air-cooled units have two refrigerant circuits. Water- cooled units hav...

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