Trane SCXG-SVX01B-EN manual ServiceAccess, Section, TopView CCRC/CIRC 20, 29

Page 13

pre-installation

Installation considerations

ServiceAccess

￿WARNING

HazardousVoltage w/Capacitors!

Disconnect all electric power, including remote disconnects before servicing. Follow proper lockout/tagout proce- dures to ensure the power cannot be inadvertently energized. For variable frequency drives or other energy storing components provided byTrane or others, refer to the appropriate manufacturer’s literature for allowable waiting periods for discharge of capacitors.Verify with an appropriate voltmeter that all capacitors have discharged. Failure to disconnect power and discharge capacitors before servicing could result in death or serious injury.

Variable Frequency Drives are shipped separately and field installed. See page 29 forVFD related dimensions and weights.

96” (2132 mm)

TopView

CCRC/CIRC 20, 29, 32

48” (1066 mm)

96” (2132 mm)

48” (1066 mm)

Control

Panel

Note: For additional information regard- ing the safe discharge of capacitors, see PROD-SVB06A-EN or PROD-SVB06A-FR.

See Figure I-PC-2 andTable I-PC-1 for recommended service and code clearances. Access to thermostat unit controls is through a hinged access panel door on the front, lower left of the unit’s compressor section.

IntelliPak unit controls access is through a panel on the middle right of the fan section. The panel is secured with an automatic latch and quick-acting fasten- ers, which require a screwdriver to open.

Removable front unit panels provide access to compressors, fan, motor, inlet guide-vane actuator, and belts.

Table I-PC-1. Service and code clearance requirements

Side

Distance

Purpose

front

42 in. (20-38 tons)

NEC code requirement

left

18 in.

 

air-cooled units only

 

36 in.

 

refrigeration & waterside component service

 

77 in.

fan shaft removal

right

36 in.

provides uniform airflow

inlet

18 in.

provides uniform airflow

air inlet

18” minimum

 

Removable left side panels give access to drive side, fan bearing, inlet guide-vanes, condensers, and waterside economizer control valve.The compressor, con- denser and fan motor access panels are secured with quick-acting fasteners. Access panels for evaporator coils, expansion and water valves, and left fan bearing are sheet metal screws. Access to other components for service requires removal of panels secured with sheet metal screws. During operation, sight glasses are viewable through portholes on the upper right side panel of the fan

See table

42” minimum

36”minimum

Control

Panel

section.

Figure I-PC-2.Top view of self-contained unit showing recommended service and code clear- ances

SCXG-SVX01B-EN

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Contents Models JO and later design sequenceHazard Identification IntroductionSpecial Note on Refrigeration Emissions HazardousVoltage w/CapacitorsContents Refrigerant Handling Procedures Features and BenefitsModular Series Self-Contained Unit Components Unit Nameplate Installation informationModel Number Description Model Number Description ScwgDigit 22 Unit Finish Digit 31 Compressor ServiceValvesDigit Digit 24 Unit ConnectionModel Number Description Pswg Self-Contained Ship-WithAccessory Model Number DescriptionAfter-ShipmentAccessory Model Number Shipping Package Receiving and HandlingInstallation Preparation Table I-PC-1. Service and code clearance requirements ServiceAccessSection TopView CCRC/CIRC 20, 29Lifting Equipment Capacity Rigging and Unit HandlingFigure I-PC-7.Assembled modular unit proper rigging Unit Handling ProcedureIntelliPak UnitsUCM Only Split-Apart Unit AssemblyRemove panels FML, FMM, and FMR Units with Thermostat OnlyFigure I-PC-9 How to assemble the split apart modular unit Skid Removal Pre-Installation ChecklistExternal Unit Isolation Weights DimensionsSCWG/SIWG Dimensions, Left-side viewSCRG/SIRGWeight, lbs SCRG/SIRG Dimensions,Left-side View Right-side view Top view Detail Dimensions, Dimensions WeightsCCRC/CIRC -Air-Cooled Condenser CCRC/CIRC Air-cooled condenser dimensions & weight, in-lbsCCRC/CIRC Electrical connections, CCRC/CIRC Refrigerant connections,Hot Water Coil Hot water coil dimensions & weight, in-lbsSteam Coil Steam coil dimensions, in-lbsElectric Heat Coil Electric heat coil dimensions & weight, in-lbsFlexible Horizontal Discharge Plenum Waterside Economizer Waterside economizer weight, in-lbsAirside Economizer Airside economizer dimensions & weight, in-lbsDetail a Detail B Variable Frequency Drive Option VFD Dimensions Weights VFDControl and LineVoltage Result in death or serious injury Mounting RequirementsVFD with bypass dimensions, Electrical Installation ProcedureVariable Frequency Drive with Bypass Duct Connections Mechanical SpecificationsWater Piping Hazardous Voltage w/Capaci- torsTable I-MR-1. Water Connection Sizes Waterside Piping ArrangementsRefrigerant Piping Air-Cooled Units Only Brazing ProceduresHazard of Explosion and Deadly Gases Supply PowerWiring Unit Wiring DiagramsLive Electrical Components Equipment DamageSelection Procedures Pre-Startup Procedures Installation requirementsSupply Fan Isolators Shipping bracketFigure I-PR-3. Correct plenum insulation placement Unit Installation Airside Economizer InstallationField Wiring Connections Unit HandlingInstalling theTransducer Static PressureTransducer Installation VAV units onlyTransducer Location Figure I-PR-7. Installing the waterside economizer Waterside Economizer Installation ProcedureTubing assemblies for waterside econo Mizer left-hand piping Waterside Economizer Ship-Separate Parts List Installation Procedure Hydronic Coil InstallationUnit Structural Integrity Electric Heat CoilWiring Procedure Electric Heat InstallationTable I-PR-2.Available Electric Heat kW Zone Sensor Options for IntelliPak Control Units Standard with All IntelliPak UnitsCV Unit Zone Sensor Options BAYSENS077* DescriptionVAV Unit Zone Sensor Option CV andVAV Unit Zone Sensor OptionsBAYSENS074 Description BAYSENS073 DescriptionWiring Zone Sensor InstallationMounting Location Mounting the SubbaseRight Mounting Directly to the Wall Mounting to Junction Box Variable AirVolume Zone Sensor BAYSENS020B Description ConstantVolume Zone Sensor BAYSENS019 DescriptionProgrammable Zone Sensors Airflows from adjacent zones or other units Programmable Zone Sensor InstallationTime Clock Installation Checklist Time Clock InstallationWiring theTimeclock Time Clock OptionHuman Interface HI Panel Remote Human Interface Panel InstallationRemote Human Interface Panel Location RecommendationsMounting the Remote Human Interface RHI Panel ProcedureWall Mounting the RHI Panel Pre-startup LowVoltage AC FieldWiring Connections Wiring the Remote Human InterfaceCommunication Link ShieldedTwisted PairWiring Interprocessor Communication Bridge ModuleWiringPre-Startup Checklist Connecting toTracer SummitProgrammable Zone Sensor Options Installation programmingDuring Programming Indicates Heat supply air Cool supply air Warmup temperatureKeypad Operation Time Button Temporary Manual OverrideKeypad Lockout Up and Down Button ArrowsFigure I-P-6.Temporary manual override menu screen Temporary Override Run ModeTable I-P-1. Zone sensor BAYSENS019 option menu settings Figure I-P-7.Temporary manual override run mode screenIntelligent Copy Remote Panel Indicator Signals From UCM to ZSMTo use Intelligent Copy Off FlashingFigure I-P-9.BAYSENS019 complete icon display Icon DescriptionsFigure I-P-10.BAYSENS020 complete icon display Programming theTime Clock Option Setting theTimeProgramming To review and change programsUnit Startup Procedures Installation startupPre-Startup Checklist Compressor DamageEvaporator Startup LogCompressor Amp Draw Air Cooled Units Water Cooled UnitsPoints List Gbas Module Points List RTM ModulePoints List Ecem Module Points List -TracerTMLCI-I ModuleRTM Module Board Standard on all Units Unit Control ComponentsVAV Box Option Table O-GI-2. RTM sensor resistance vs. temperatureTable O-GI-3. RTM setpoint analog inputs Heat Module Human Interface Module Standard on all UnitsVentilation Override Module VOM Option Supply fan on Supply fan VFD on if equipped Purge sequence DGeneric BuildingAutomation System Module Option Table O-GI-7. Gbas input voltage corresponding setpoints Table O-GI-6. Gbas analog input setpointsWaterside Components Figure O-GI-3. Basic water piping, constant water flow UnitAirside Components General Operation information Air-Cooled Condensers Airside Economizer Interface with Comparative EnthalpyProperWaterTreatment Input Devices and System FunctionsSupply Air Temperature Sensor Return AirTemperature SensorSupply Airflow Proving Switches Filter SwitchControl Sequences Operation Operation operationUnoccupied Sequence of Operation Tracer Summit SystemCycling Capacity Morning Warmup MWU Morning WarmupTimed Override Activation ICS Occupied Sequence Mechanical Cooling Supply Air Setpoint Reset VAV Units OnlyWater-Cooled Units Only Electric HeatCompressor Lead/Lag Operation CompressorsTable O-SO-1. Compressor Stages Evaporator Coil Frost Protection Step ControlTable O-SO-2. Pressure cutouts Operation Service Valve OptionTable M-GI-1. SCWG/SIWG/SCRG/SIRG General Maintenance Data Maintenance informationMaintenance Procedures Maintenance proceduresAir Filters Inspecting and Cleaning the Fan Inspecting and Cleaning the Drain PanRemove all standing water Variable Frequency Drive VFD Supply FanFan Drive Table M-MP-1. Baldor Fan Bearing Lubrication Schedule Fan BearingsTable M-MP-2.AO Smith Bearing Lubrication Schedule Table M-MP-3. Compatible Fan Bearing GreaseDeflection = belt span/64 Fan BeltTensionTable M-MP-4. Fan shaft bearing torques Belt Adjusting BeltTensionConfined Space Hazards Refrigerant SystemRefrigerant Evacuation Motor Winding Damage Refrigerant LeakTestingUse of Pressure Regulator Valves Gauges R407cMaintenance Proper Coil CleaningAgent Coil Fin CleaningInlet GuideVanes Coil Freezeup Flow Switch Maintenance Chemical Cleaning of Condenser and Economizer CoilCleaning the Flow Switch Piping ComponentsMonthly Checklist Maintenance Periodic ChecklistsSemi-Annual Maintenance Annual MaintenanceOperating Procedures Check the zone thermostat settingsCommon Unit Problems and Solutions System ChecksDiagnostics Maintenance diagnosticsEmergency Stop Heat Module Auxilliary Temperature Sensor FailEntering Cond WaterTemp Sensor Fail Entering Water Temp Sensor FailLow Air Temp Limit Trip Mode Input FailureLow Pressure Control Open Circuit 1, 2, 3, or MCM Communications FailureCheck Field/unit wiring between RTM and NSB Panel NSB Panel ZoneTemperature Sensor FailureHumidity Sensor Failure Temp. Sensor FailureRTM Zone Sensor Failure RTM Data Storage ErrorProblemThe LCI-I has lost communication withTracer Summit Supply Fan VFD Bypass EnabledSupply Fan Failure LCI-I Module Comm FailureVOM Communications Failure Render all HI keystrokes ineffectiveWSM Communications Fail Water Flow Fail WSM Mixed AirTemp Sensor Fail114 115 Literature Order Number

SCXG-SVX01B-EN specifications

The Trane SCXG-SVX01B-EN is an advanced variable refrigerant flow (VRF) system designed to provide efficient and flexible heating and cooling solutions for commercial and residential applications. This system exemplifies Trane's commitment to innovation, energy efficiency, and ease of installation, making it a standout choice in the industry.

One of the main features of the SCXG-SVX01B-EN is its ability to deliver precise temperature control across multiple zones. The system utilizes a modular design that allows for the connection of multiple indoor units to a single outdoor unit, enabling simultaneous heating and cooling in different areas of a building. This zoned comfort not only enhances occupant satisfaction but also contributes to energy savings by allowing for targeted climate control where it is most needed.

Trane's VRF technology is complemented by its inverter-driven compressors, which adjust their speed according to the demand for heating or cooling. This means that the system operates more efficiently than traditional systems by consuming less energy during partial load conditions. The SCXG-SVX01B-EN also integrates advanced heat recovery capabilities, allowing it to transfer heat from one zone to another, further optimizing energy usage.

The unit's compact design simplifies installation, making it suitable for both retrofit projects and new constructions. The flexible piping layout supports various configurations, allowing easy adaptation to the building's architecture. The model also incorporates intelligent controls, offering a user-friendly interface that enhances operational flexibility and promotes energy management.

In addition to its performance features, the Trane SCXG-SVX01B-EN emphasizes sustainability. It uses advanced refrigerants with low global warming potential (GWP), aligning with environmental regulations and helping to minimize the system's ecological footprint. The durable construction of the system ensures longevity and reliability, reducing maintenance costs and enhancing overall operational efficiency.

Finally, Trane supports its products with comprehensive warranties and a network of service professionals, ensuring that customers have access to expert assistance throughout the life cycle of their system. The SCXG-SVX01B-EN represents a blend of technology, efficiency, and versatility, making it an ideal choice for those seeking an effective heating and cooling solution.
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