Trane WC-IOM-7 Installation, Factory Installed Economizer, Main Electrical Power Requirements

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Installation

personnel with what is required in the installation process. It does not replace the detailed instructions called out in the applicable sections of this manual.

Check the unit for shipping damage and material shortage; file a freight claim and notify appropriate sales representative.

Verify correct model, options and voltage from nameplate.

Verify that the installation location of the unit will provide the required clearance for proper operation.

Assemble and install the roof curb (if applicable). Refer to the latest edition of the curb installers guide that ships with each curb kit.

Fabricate and install ductwork; secure ductwork to curb.

Rigging the unit.

Set the unit onto the curb; check for levelness.

Ensure unit-to-curb seal is tight and without buckles or cracks.

Install and connect a condensate drain line to the evaporator drain connection.

Factory Installed Economizer

Ensure the economizer has been pulled out into the operating position. Refer to the economizer installers guide for proper position and setup.

Install all access panels.

Main Electrical Power Requirements

Verify that the power supply complies with the unit nameplate specifications.

Inspect all control panel components; tighten any loose connections.

Connect properly sized and protected power supply wiring to a field- supplied/installed disconnect switch and to the main power terminal block (HTB1) in the unit control panel.

Install proper grounding wires to an earth ground.

Note: All field-installed wiring must comply with NEC and applicable local codes.

Electric Heat Requirements

Verify that the power supply complies with the electric heater specifications on the unit and heater nameplate.

Inspect the heater junction box and control panel; tighten any loose connections.

Check electric heat circuits for continuity.

Low Voltage Wiring (AC & DC) Requirements

Install the zone thermostat, with or without switching subbase.

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Packaged Heat Pump • WC-IOM-7

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Contents Packaged Heat Pump DecemberModel Number Description Hazardous Voltage w/Capacitors Contains RefrigerantEquipment Damage From Ultraviolet UV Lights Contents Contents Model Number Description General Information Rlci ReliaTel LonTalk Communication Interface Optional Clogged Filter Switch OptionalGeneral Information Rtom ReliaTel Options Module OptionalLow Pressure Control Compressor Disable CPR1/2Power Exhaust Control Optional High Pressure Control OptionalZone Sensor Module ZSM BAYSENS009B Lead/Lag Control Dual Circuit OnlyZone Sensor Module ZSM BAYSENS007B Zone Sensor BAYSENS011BRemote Zone Sensor BAYSENS014C High Temperature Sensor BAYFRST001ARemote Zone Sensor BAYSENS013C Remote Zone Sensor BAYSENS016AUnit Inspection Smoke Detector Sensor OptionalFirst Aid Measures Fiberglass WoolStorage Unit Clearances Unit Dimensions Unit Dimensions Unit Dimensional Data 12 1/2 Ton, 15 TonUnit Dimensional Data 20 Ton Horizontal Duct Dimensional Data 12 1/2 Ton, 15 Ton Heavy Objects Improper Unit LiftRigging Horizontal Units InstallationIf a Curb Accessory Kit is not used DuctworkMain Electrical Power Requirements InstallationFactory Installed Economizer Low Voltage Wiring AC & DC RequirementsFilter Installation Condensate Drain ConfigurationField Installed Power Wiring Optional Tbue Wiring Through the Base Electrical Option Main Unit PowerStandard Wiring Use Copper Conductors OnlyControl Power Transformer Field Installed Control WiringHazardous Voltage Controls using 24 VAC Rtrm Smoke Detector Customer Low Voltage Wiring Smoke detector wiringInstallation Space Temperature Averaging Temperature vs. Resistance Voltage Imbalance Live Electrical Components Electrical Phasing Three Phase MotorsCompressor Crankcase Heaters Optional ReliaTel Controls Pre-Start Test ModesPre-Start Verifying Proper Air Flow Units with Belt Drive Indoor FanReturn Air Smoke Detector Rotating Components Start UpEconomizer Start-Up Compressor Start-UpHeating Start-Up Start UpScroll Compressors Final System Setup Maintenance Fan Belt Adjustment Belt Drive UnitsMaintenance Monthly Maintenance Hazardous VoltageCooling Season Return Air Smoke Detector MaintenanceFilters Coil Cleaning Heating SeasonHazardous Pressures Final ProcessSample maintenance log Hazardous Service Procedures TroubleshootingReliaTel Control Troubleshooting System Status Checkout ProcedureSystem Failure MethodHeat Failure Resetting Cooling and Heating LockoutsCool Failure Clogged Filter Switch Zone Temperature Sensor ZTS Service IndicatorFan Failure Switch Test Cooling Set Point CSP and Heating Set Point HSP ZtempTesting serial communication voltage Test System Mode and Fan SelectionProgrammable & Digital Zone Sensor Test ReliaTel Refrigeration Module Rtrm Default Chart Unit Operation without a Zone SensorUnit Economizer Control ECA Troubleshooting ReliaTel Control Wiring Diagrams Drawing Number DescriptionWarranty Heat PumpWarranty Page WC-IOM-7