Carrier installation instructions Wiring Schematics-50CR Three Phase

Page 15

50CR

5.0

A05259

Fig. 16 - Wiring Schematics-50CR Three Phase

15

Image 15

Contents Table of Contents Installation InstructionsIntroduction Safety ConsiderationsElectrical Shock Hazard Equipment Damage HazardRoof Curb for Small Cabinet Roof Curb for Large Cabinet Unit Leveling Tolerances 50CR024-036 Unit Dimensions 50CR042-060 Unit Dimensions Property Damage Hazard Rig and Place UnitInspection Unit Falling HazardRigging Bracket Under Unit Rain Lip Select and Install Ductwork Electrical Operation HazardProvide for Condensate Disposal Physical Data Unit 50CR Typical InstallationHIGH-VOLTAGE Connections Routing Power Leads Into UnitConnecting Ground Lead to Ground Screw Routing Control Power WiresElectrical Data-50CR Electrical Data Legend Wiring Schematics-50CR Single Phase Wiring Schematics-50CR Three Phase Line Power Connections Accessory InstallationPRE-START-UP FIRE, EXPLOSION, Electrical Shock Hazard START-UPUnit Start-Up Verify Motor Winding Section Status Code 45, Control Board Test FaultStatus Code 37, Heater Output Sensed on When not Energized Status Code 44, Motor Communication FaultStatus Code 25, Invalid Motor / Model Selection Status Code 36, Heater Output not Sensed When EnergizedStatus Code 41, Blower Motor Fault Status Code 16, System Communication FaultStart-Up Adjustments Sequence of OperationCheck for Refrigerant Leaks Typical Heat Pump Operation, Cooling Mode Defrost Control Electric Heat Pressure Drop Table Small Cabinet Maintenance Personal Injury and Unit Damage HazardUnit Operation Hazard Outdoor Fan Air FilterIndoor Blower and Motor Outdoor Coil, Indoor Coil, and Condensate Drain PanPressure Switches Indoor AirflowMetering Devices-TXV & Accurater Piston High-Pressure Switch EXPLOSION, FIRE, Electrical Shock HazardPersonal INJURY, Unit Operation Hazard System Information LOSS-OF-CHARGE SwitchTroubleshooting START-UP ChecklistObserve all warnings, cautions, and bold text Troubleshooting Chart Head pressure too low Troubleshooting Chart Cont’dSTART-UP Checklist