Manuals / Carrier / Household Appliance / Heat Pump

Carrier 50CR installation instructions

Models: 50CR

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Page 21

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ACCUMULATOR

COMPRESSOR

OUTDOOR COIL

TXV in Metering

Position

LCS

HP S

INDOOR COIL

LEGEND	Bypass
	Position

HPS – High Pressure Switch

LCS – Loss of Charge Switch

Accurater®Metering De vice

Arrow indicates direction of flow

Fig. 20 - Typical Heat Pump Operation, Cooling Mode

50CR

C03011

ACCUMULATOR

COMPRESSOR

OUTDOOR COIL

TXV in Bypass

Position

LCS

HP S

INDOOR COIL

Metering

Position

LEGEND

HPS – High Pressure Switch

LCS – Loss of Charge Switch

Accurater®Metering De vice

Arrow indicates direction of flow

Fig. 21 - Typical Heat Pump Operation, Heating Mode

C03012

Page 21

Image 21

Contents

TABLE OF CONTENTS Installation Instructions50CR SizesRECEIVING AND INSTALLATION Step 1-CheckEquipment SAFETY CONSIDERATIONS50CR ELECTRICAL SHOCK HAZARD50CR Fig. 2 - Roof Curb DimensionsRoof Curb for Small Cabinet Roof Curb for Large CabinetCORNER WEIGHTS SMALL CABINET Fig. 5 - Corner Weights LbsCORNER WEIGHTS LARGE CABINET 50CRFig. 6 - 50CR024-036Unit Dimensions 50CRA05299 Fig. 7 - 50CR042-060Unit Dimensions 50CRA05300 Step 4-Rigand Place Unit 50CRELECTRICAL SHOCK HAZARD UNIT FALLING HAZARD50CR MAXIMUM SHIPPING WEIGHTFig. 8 - Rigging Bracket Under Unit Rain Lip Fig. 9 - Suggested Rigging50CR Step 5-Selectand Install DuctworkELECTRICAL OPERATION HAZARD ELECTRICAL SHOCK HAZARDFROM POWER SOURCE DISCONNECT PER NEC Fig. 10 - Typical Installation50CR Table 1-PhysicalData - Unit 50CR50CR Step 7-InstallElectrical ConnectionsFig. 11 - 50CR with Duct Covers On Fig. 12 - Condensate TrapTable 2-Electrical Data-50CR 50CRLEGEND Field Control-VoltageWiring Fig. 14 - Control Voltage Wiring Connections50CR Fig. 13 - Electrical Data LegendFig. 15 - Wiring Schematics-50CRSingle Phase 50CRA05304 Fig. 16 - Wiring Schematics-50CRThree Phase 50CRA05259 Fig. 17 - Line Power Connections 50CRFig. 18 - Control Plate Fig. 19 - Detail of Printed Circuit Board 50CRPRE-START-UP FIRE, EXPLOSION, ELECTRICAL SHOCK HAZARDC. ECM Motor Troubleshooting 50CRELECTRICAL SHOCK HAZARD STATUS CODE 25, INVALID MOTOR / MODEL SELECTION 50CR50CR Step 4-Start-UpAdjustmentsStep 2-Sequenceof Operation Step 3-Checkfor Refrigerant Leaks50CR Step 5-DefrostControl 50CRFig. 22 - Cooling Charging Table-Subcooling 50CRTable 3-ECMWet Coil Pressure Drop in. wg Table 4-FilterPressure Drop Table in. wg50CR MAINTENANCETable 6-ElectricHeat Pressure Drop Table Large CabinetInfinity Top Step 5-ElectricalControls and Wiring50CR Step 1—AirFilterBalance Point Worksheet 50CR Step 11-High-PressureSwitchEXPLOSION, FIRE, ELECTRICAL SHOCK HAZARD Step 13-RefrigerantSystemTROUBLESHOOTING Detail ASTART-UPCHECKLIST Step 14-SystemInformationHEAT PUMP WITH PURON 50CRREFRIGERATION SECTION QUICK-REFERENCEGUIDE S Observe all warnings, cautions, and bold textTable 7-TroubleshootingChart 50CRContinued next page Table 7-TroubleshootingChart Cont’d 50CRIFM-IndoorFan Motor TEMPERATURES START-UPCHECKLIST Remove and Store in Job File50CR I. Preliminary Information