Trane SCXG-SVX01B-EN Zone Sensor Installation, Mounting Location, Mounting the Subbase, Wiring

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pre-startup

Installation requirements

Standard zone sensors, BAYSENS077, ships with all units

Zone Sensor Installation

All sensor options ship in the main control panel and are field-installed. Programmable option installation procedures.

Mounting Location

Mount the sensor on the wall in an area with good air circulation at an average temperature. Avoid mounting space temperature sensor is areas subject to the following conditions:

Drafts or “dead” spots behind doors or in corners

Hot or cold air from ducts

Radiant heat from the sun or appliances

Concealed pipes and chimneys

Unheated or non-cooled surfaces behind the sensor, such as outside walls

Airflows from adjacent zones or other units

To mount the sensors, remove the dust cover and mount the base on a flat surface or 2" x 4" junction box. Sensors ship with mounting screws.

Mounting the Subbase

￿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.

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

NOTICE

Use Copper Conductors Only!

Unit terminals are not designed to accept other types of conductors. Failure to use copper conductors may result in equipment damage.

Remove the zone sensor cover from subbase, and mount subbase on the wall or on a 2 x 4 junction box. Route wires through the wire access hole in the subbase. See Figure I-PR-14. Seal the hole in the wall behind the subbase.

Note: Guidelines for wire sizes and lengths are shown in Table I-PR-1. The total resis- tance of these low voltage wires must not exceed 2.5 ohms per conductor. Any resis- tance greater than 2.5 ohms may cause the control to malfunction due to excessive voltage drop.

Note: Do not run low-voltage control wiring in same conduit with high-voltage power wiring.

Wiring

1.Run wires between the unit control panel and the zone sensor subbase.To determine the number of wires required, refer to the unit wiring diagrams.

2.Connect the wiring to the appropriate terminals at the unit control panel and at the zone sensor subbase. In general, zone sensor connections to the unit use the convention of connecting zone sensor terminals to like numbered unit terminals (1 to 1, 2 to 2, etc.).The connection detail is shown on the unit wiring diagrams, which are located in

the unit control panel.

3.Replace the zone sensor cover back on the subbase and snap securely into place.

Standard Remote Sensor (BAYSENS077) When using the remote sensor, BAYSENS077, mount it in the space that is to be controlled.Wire according to the interconnecting wiring diagrams on the unit.

Table I-PR-1. Zone sensor maximum lengths and wire size

Distance from

Recommended

Unit to Controller

Wiring Size

0-150 feet

22gauge

151--240 feet

20gauge

241-385 feet

18gauge

386- 610 feet

16gauge

611-970 feet

14gauge

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SCXG-SVX01B-EN

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Contents JO and later design sequence ModelsSpecial Note on Refrigeration Emissions IntroductionHazard Identification HazardousVoltage w/CapacitorsContents Features and Benefits Refrigerant Handling ProceduresModular Series Self-Contained Unit Components Installation information Unit NameplateModel Number Description Scwg Model Number DescriptionDigit Digit 31 Compressor ServiceValvesDigit 22 Unit Finish Digit 24 Unit ConnectionSelf-Contained Ship-WithAccessory Model Number Description Model Number Description PswgAfter-ShipmentAccessory Model Number Receiving and Handling Shipping PackageInstallation Preparation Section ServiceAccessTable I-PC-1. Service and code clearance requirements TopView CCRC/CIRC 20, 29Rigging and Unit Handling Lifting Equipment CapacityUnit Handling Procedure Figure I-PC-7.Assembled modular unit proper riggingRemove panels FML, FMM, and FMR Split-Apart Unit AssemblyIntelliPak UnitsUCM Only Units with Thermostat OnlyFigure I-PC-9 How to assemble the split apart modular unit Skid Removal Pre-Installation ChecklistExternal Unit Isolation SCWG/SIWG Dimensions, DimensionsWeights Left-side viewSCRG/SIRGWeight, lbs SCRG/SIRG Dimensions,Left-side View Right-side view Top view Dimensions Weights Detail Dimensions,CCRC/CIRC Electrical connections, CCRC/CIRC Air-cooled condenser dimensions & weight, in-lbsCCRC/CIRC -Air-Cooled Condenser CCRC/CIRC Refrigerant connections,Hot water coil dimensions & weight, in-lbs Hot Water CoilSteam coil dimensions, in-lbs Steam CoilElectric Heat Coil Electric heat coil dimensions & weight, in-lbsFlexible Horizontal Discharge Plenum Waterside economizer weight, in-lbs Waterside EconomizerAirside Economizer Airside economizer dimensions & weight, in-lbsDetail a Detail B Control and LineVoltage Dimensions Weights VFDVariable Frequency Drive Option VFD Result in death or serious injury Mounting RequirementsVFD with bypass dimensions, Electrical Installation ProcedureVariable Frequency Drive with Bypass Water Piping Mechanical SpecificationsDuct Connections Hazardous Voltage w/Capaci- torsWaterside Piping Arrangements Table I-MR-1. Water Connection SizesRefrigerant Piping Air-Cooled Units Only Brazing ProceduresHazard of Explosion and Deadly Gases Live Electrical Components Unit Wiring DiagramsSupply PowerWiring Equipment DamageSelection Procedures Supply Fan Isolators Installation requirementsPre-Startup Procedures Shipping bracketFigure I-PR-3. Correct plenum insulation placement Field Wiring Connections Airside Economizer InstallationUnit Installation Unit HandlingInstalling theTransducer Static PressureTransducer Installation VAV units onlyTransducer Location Waterside Economizer Installation Procedure Figure I-PR-7. Installing the waterside economizerTubing 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 CV Unit Zone Sensor Options Standard with All IntelliPak UnitsZone Sensor Options for IntelliPak Control Units BAYSENS077* DescriptionBAYSENS074 Description CV andVAV Unit Zone Sensor OptionsVAV Unit Zone Sensor Option BAYSENS073 DescriptionMounting Location Zone Sensor InstallationWiring 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 Programmable Zone Sensor Installation Airflows from adjacent zones or other unitsWiring theTimeclock Time Clock InstallationTime Clock Installation Checklist Time Clock OptionRemote Human Interface Panel Remote Human Interface Panel InstallationHuman Interface HI Panel Location RecommendationsMounting the Remote Human Interface RHI Panel ProcedureWall Mounting the RHI Panel Pre-startup Communication Link ShieldedTwisted PairWiring Wiring the Remote Human InterfaceLowVoltage AC FieldWiring Connections Interprocessor Communication Bridge ModuleWiringConnecting toTracer Summit Pre-Startup ChecklistInstallation programming Programmable Zone Sensor OptionsHeat supply air Cool supply air Warmup temperature During Programming IndicatesKeypad Operation Keypad Lockout Temporary Manual OverrideTime Button Up and Down Button ArrowsTemporary Override Run Mode Figure I-P-6.Temporary manual override menu screenFigure I-P-7.Temporary manual override run mode screen Table I-P-1. Zone sensor BAYSENS019 option menu settingsTo use Intelligent Copy Remote Panel Indicator Signals From UCM to ZSMIntelligent Copy Off FlashingIcon Descriptions Figure I-P-9.BAYSENS019 complete icon displayFigure I-P-10.BAYSENS020 complete icon display Programming Setting theTimeProgramming theTime Clock Option To review and change programsPre-Startup Checklist Installation startupUnit Startup Procedures Compressor DamageEvaporator Startup LogCompressor Amp Draw Water Cooled Units Air Cooled UnitsPoints List Ecem Module Points List RTM ModulePoints List Gbas Module Points List -TracerTMLCI-I ModuleUnit Control Components RTM Module Board Standard on all UnitsVAV 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 Purge sequence D Supply fan on Supply fan VFD on if equippedGeneric BuildingAutomation System Module Option Table O-GI-6. Gbas analog input setpoints Table O-GI-7. Gbas input voltage corresponding setpointsWaterside Components Figure O-GI-3. Basic water piping, constant water flow UnitAirside Components General Operation information Airside Economizer Interface with Comparative Enthalpy Air-Cooled CondensersInput Devices and System Functions ProperWaterTreatmentSupply Airflow Proving Switches Return AirTemperature SensorSupply Air Temperature Sensor Filter SwitchUnoccupied Sequence of Operation Operation operationControl Sequences Operation Tracer Summit SystemCycling Capacity Morning Warmup MWU Morning WarmupTimed Override Activation ICS Occupied Sequence Water-Cooled Units Only Supply Air Setpoint Reset VAV Units OnlyMechanical Cooling Electric HeatCompressor Lead/Lag Operation CompressorsTable O-SO-1. Compressor Stages Evaporator Coil Frost Protection Step ControlTable O-SO-2. Pressure cutouts Service Valve Option OperationMaintenance information Table M-GI-1. SCWG/SIWG/SCRG/SIRG General Maintenance DataMaintenance 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-2.AO Smith Bearing Lubrication Schedule Fan BearingsTable M-MP-1. Baldor Fan Bearing Lubrication Schedule Table M-MP-3. Compatible Fan Bearing GreaseDeflection = belt span/64 Fan BeltTensionTable M-MP-4. Fan shaft bearing torques Adjusting BeltTension BeltConfined Space Hazards Refrigerant SystemRefrigerant Evacuation Use of Pressure Regulator Valves Gauges Refrigerant LeakTestingMotor Winding Damage R407cMaintenance Proper Coil CleaningAgent Coil Fin CleaningInlet GuideVanes Coil Freezeup Cleaning the Flow Switch Chemical Cleaning of Condenser and Economizer CoilFlow Switch Maintenance Piping ComponentsSemi-Annual Maintenance Maintenance Periodic ChecklistsMonthly Checklist Annual MaintenanceCommon Unit Problems and Solutions Check the zone thermostat settingsOperating Procedures System ChecksMaintenance diagnostics DiagnosticsEntering Cond WaterTemp Sensor Fail Heat Module Auxilliary Temperature Sensor FailEmergency Stop Entering Water Temp Sensor FailLow Pressure Control Open Circuit 1, 2, 3, or Mode Input FailureLow Air Temp Limit Trip MCM Communications FailureHumidity Sensor Failure NSB Panel ZoneTemperature Sensor FailureCheck Field/unit wiring between RTM and NSB Panel Temp. Sensor FailureRTM Data Storage Error RTM Zone Sensor FailureSupply Fan Failure Supply Fan VFD Bypass EnabledProblemThe LCI-I has lost communication withTracer Summit LCI-I Module Comm FailureVOM Communications Failure Render all HI keystrokes ineffectiveWSM Communications Fail WSM Mixed AirTemp Sensor Fail Water Flow 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.