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Trane WC-IOM-7 manual DC Conductors Zone Sensor Module wiring, Installation, Rtrm

Models: WC-IOM-7

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Table 3. DC Conductors Zone Sensor Module wiring

Installation

Note: Resistance in excess of 2.5 ohms per conductor can cause deviations in the accuracy of the controls.

2.Ensure that the wiring between controls and the unit’s termination point does not exceed two and a half (2.5) ohms/conductor for the length of the run.

3.Do not run the electrical wires transporting DC signals in or around conduit housing high voltage wires.

Table 3. DC Conductors Zone Sensor Module wiring

Distance from Unit to Control Recommended Wire Size

0 - 150 feet		22 gauge

0 - 45.7 m		.33 mm2

151	- 240 feet	20 gauge

46	- 73.1 m	.50 mm2

241 -385 feet		18 gauge

73.5 - 117.3 m		.75 mm2

386	- 610 feet	16 gauge

117.7 - 185.9 m		1.3 mm2

611	- 970 feet	14 gauge

186.2 - 295.7 m		2.0 mm2

Figure 11. Reliatel conventional thermostat field wiring diagram

RTRM

WC-IOM-7 • Packaged Heat Pump

27

Image 27

Trane WC-IOM-7 manual DC Conductors Zone Sensor Module wiring, Installation, Rtrm

Contents

Packaged Heat Pump DecemberModel Number Installation Operation MaintenanceModel Number Description Warnings and CautionsWC-IOM-7 Packaged Heat Pump Contains RefrigerantHazardous Voltage w/Capacitors Equipment Damage From Ultraviolet UV LightsContents ContentsWarranty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57 Heat Pump . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57 WCZ, WCY, WCX, WCC, WCD, WCH, WCM, WCP and WSC Parts Only. . . . 57 Models Less Than 20 Tons for Commercial Use*. . . . . . . . . . . . . . . . . . . . . . 57 Heat Pump . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58 Standard Equipment Warranty Terms and Conditions. . . . . . . . . . . . . . . . . . 58 Commercial Equipment Warranty and Liability . . . . . . . . . . . . . . . . . . . . . . . 58 Models Larger that 20 Tons for Commercial Use* ContentsMinor design sequence Service digitModel Number Description DigitUnit Description General InformationUnit Nameplate Compressor NameplateRTOM - ReliaTel Options Module Optional Clogged Filter Switch OptionalSystem Input Devices & Functions General InformationHigh Pressure Control Optional Compressor Disable CPR1/2Power Exhaust Control Optional Low Pressure ControlZone Sensor BAYSENS011B Lead/Lag Control Dual Circuit OnlyZone Sensor Module ZSM BAYSENS007B Zone Sensor Module ZSM BAYSENS009BRemote Zone Sensor BAYSENS016A High Temperature Sensor BAYFRST001ARemote Zone Sensor BAYSENS013C Remote Zone Sensor BAYSENS014CUnit Inspection Smoke Detector Sensor OptionalGeneral Information Storage Precautionary MeasuresFiberglass Wool First Aid MeasuresGeneral Information Unit ClearancesWC-IOM-7 Packaged Heat Pump Unit DimensionsPackaged Heat Pump WC-IOM-7 Unit DimensionsWC-IOM-7 Packaged Heat Pump Figure 4. Unit Dimensional Data 20 TonFigure 5. Roofcurb Dimensional Data 20 Ton Unit DimensionsFigure 7. Horizontal Duct Dimensional Data 20 Ton Unit DimensionsPackaged Heat Pump WC-IOM-7 Figure 8. Rigging and center of gravity data Typical weights and point loading dataHeavy Objects Improper Unit LiftUnit Dimensions RiggingGeneral Unit Requirements InstallationIf a Curb Accessory Kit is not used FoundationLow Voltage Wiring AC & DC Requirements InstallationFactory Installed Economizer Main Electrical Power RequirementsFigure 9. Condensate Trap Installation Condensate Drain ConfigurationFilter Installation Field Installed Power WiringNOTICE Use Copper Conductors Only Main Unit PowerStandard Wiring Optional TBUE WiringInstallation Field Installed Control WiringControl Power Transformer Hazardous VoltageControls using 24 VAC InstallationPackaged Heat Pump WC-IOM-7 Table 3. DC Conductors Zone Sensor Module wiring InstallationRTRM Smoke Detector Customer Low Voltage Wiring Figure 12. Smoke detector wiringInstallation WC-IOM-7 Packaged Heat Pump InstallationSpace Temperature Averaging InstallationPackaged Heat Pump WC-IOM-7 Hazardous Voltage Table 4. Temperature vs. ResistanceInstallation TemperatureInstallation Voltage ImbalanceInstallation Electrical Phasing Three Phase MotorsLive Electrical Components Compressor Crankcase Heaters OptionalPackaged Heat Pump WC-IOM-7 ReliaTel ControlsInstallation Live Electrical ComponentsService test guide for component operation Pre-StartTest Modes ReliaTel Control Pre-StartVerifying Proper Air Flow Units with Belt Drive Indoor FanPre-Start Return Air Smoke DetectorCompressor Start-Up Start UpEconomizer Start-Up Rotating ComponentsStart Up Heating Start-UpScroll Compressors Start Up Final System SetupMaintenance Fan Belt Adjustment - Belt Drive UnitsRotating Components Belt tension measurement and deflection ranges MaintenanceMonthly Maintenance value shown in TableMaintenance Return Air Smoke Detector MaintenanceCooling Season FiltersCoil Cleaning Heating SeasonMaintenance Hazardous Pressures Final ProcessMaintenance Maintenance Sample maintenance logTroubleshooting Hazardous Service ProceduresReliaTel Control LED 1 System TroubleshootingSystem Status Checkout Procedure MethodMethod LED 4 ServiceService Failure System FailureTroubleshooting Resetting Cooling and Heating LockoutsHeat Failure Cool FailureTroubleshooting Zone Temperature Sensor ZTS Service IndicatorClogged Filter Switch Fan Failure SwitchCooling Set Point CSP and Heating Set Point HSP Zone Temperature Sensor ZTS TestTest Zone Temperature Thermistor ZTEMP TestTest System Mode and Fan Selection LED Indicator Test, SYS ON, HEAT, COOL & SERVICETesting serial communication voltage Programmable & Digital Zone Sensor TestTroubleshooting ReliaTel Refrigeration Module RTRM Default ChartSystem mode and fan selection chart Unit Operation without a Zone SensorUnit Economizer Control ECA Troubleshooting TroubleshootingReliaTel Control Description Wiring DiagramsDrawing NumberWarranty Heat PumpModels Less Than 20 Tons for Commercial Use Models Larger that 20 Tons for Commercial Use WarrantyStandard Equipment Warranty Terms and Conditions Commercial Equipment Warranty and LiabilityPage 12/04 Literature Order NumberWC-IOM-7 Date