Trane Comprehensive Guide to IOM Manuals for Heat Pump Installation and Control Wiring

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Installation

2.Provide proper grounding for the unit in accordance with local and national codes.

Figure 10.

Field Installed Control Wiring

An overall layout of the various control options available with the required number of conductors for each control device is illustrated in Figure 8.

Note: All field wiring must conform to NEC guidelines as well as state and local codes.

Control Power Transformer

The 24 volt control power transformers are to be used only with the accessories called out in this manual. Transformers rated greater than 50 VA are equipped with internal circuit breakers. If a circuit breaker trips, turn “Off” all power to the unit before attempting to reset it.

WARNING

Hazardous Voltage!

Disconnect all electric power, including remote disconnects before servicing. Follow proper lockout/tagout procedures to ensure the power can not be inadvertently energized. Failure to disconnect power before servicing could result in death or serious injury.

WC-IOM-7 • Packaged Heat Pump

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Contents December Packaged Heat PumpModel Number Description Hazardous Voltage w/Capacitors Contains RefrigerantEquipment Damage From Ultraviolet UV Lights Contents Contents Model Number Description General Information General Information Clogged Filter Switch OptionalRlci ReliaTel LonTalk Communication Interface Optional Rtom ReliaTel Options Module OptionalPower Exhaust Control Optional Compressor Disable CPR1/2Low Pressure Control High Pressure Control OptionalZone Sensor Module ZSM BAYSENS007B Lead/Lag Control Dual Circuit OnlyZone Sensor Module ZSM BAYSENS009B Zone Sensor BAYSENS011BRemote Zone Sensor BAYSENS013C High Temperature Sensor BAYFRST001ARemote Zone Sensor BAYSENS014C Remote Zone Sensor BAYSENS016ASmoke Detector Sensor Optional Unit InspectionFirst Aid Measures Fiberglass WoolStorage Unit Clearances Unit Dimensions Unit Dimensional Data 12 1/2 Ton, 15 Ton Unit DimensionsUnit Dimensional Data 20 Ton Horizontal Duct Dimensional Data 12 1/2 Ton, 15 Ton Improper Unit Lift Heavy ObjectsRigging If a Curb Accessory Kit is not used InstallationHorizontal Units DuctworkFactory Installed Economizer InstallationMain Electrical Power Requirements Low Voltage Wiring AC & DC RequirementsFilter Installation Condensate Drain ConfigurationField Installed Power Wiring Standard Wiring Main Unit PowerOptional Tbue Wiring Through the Base Electrical Option Use Copper Conductors OnlyControl Power Transformer Field Installed Control WiringHazardous Voltage Controls using 24 VAC Rtrm Smoke detector wiring Smoke Detector Customer Low Voltage WiringInstallation Space Temperature Averaging Temperature vs. Resistance Voltage Imbalance Live Electrical Components Electrical Phasing Three Phase MotorsCompressor Crankcase Heaters Optional ReliaTel Controls Test Modes Pre-StartVerifying Proper Air Flow Units with Belt Drive Indoor Fan Pre-StartReturn Air Smoke Detector Economizer Start-Up Start UpRotating Components Compressor Start-UpHeating Start-Up Start UpScroll Compressors Final System Setup Fan Belt Adjustment Belt Drive Units MaintenanceMonthly Maintenance Hazardous Voltage MaintenanceCooling Season Return Air Smoke Detector MaintenanceFilters Heating Season Coil CleaningFinal Process Hazardous PressuresSample maintenance log Hazardous Service Procedures TroubleshootingReliaTel Control System Status Checkout Procedure TroubleshootingMethod System FailureHeat Failure Resetting Cooling and Heating LockoutsCool Failure Clogged Filter Switch Zone Temperature Sensor ZTS Service IndicatorFan Failure Switch Ztemp Test Cooling Set Point CSP and Heating Set Point HSPTesting serial communication voltage Test System Mode and Fan SelectionProgrammable & Digital Zone Sensor Test Unit Operation without a Zone Sensor ReliaTel Refrigeration Module Rtrm Default ChartUnit Economizer Control ECA Troubleshooting ReliaTel Control Drawing Number Description Wiring DiagramsHeat Pump WarrantyWarranty Page WC-IOM-7