Carrier 25HPA6 - page 16

Manufacturerreserves the right to change, at any time, specifications and designs without notice and without obligations.

CatalogNo: 25HPA6---1SI

Replaces:New

25HPA6

Contents

Main 25HPA6 PerformancetSeries 2---Stage Heat Pump with PuronrRefrigerant 2to5NominalTons Installation Instruction CheckEquipment and Job Site Unpack Unit 25HPA6 Inspect Equipment Install on a Solid, Level Mou nting Pad Operating Ambient Elevate Unit In Long--LineApplications, Install Liquid--Line Solenoid Valve(LSV) MakePiping Connections Outdoor Unit Connected to Factory--ApprovedIndoor Unit Table1 RefrigerantConnections and RecommendedLiquid and Vapor TubeDiameters (in.) Table2 Accessory U sage InstallLiquid--LineFilter Drier Indoor Refrigerant Tubing connection Outdoor Install Adapter Tube Make Electrical Connections Route Ground and Power Wires Connect Groundand Power Wires Connect Control Wiring GeneralInformation CompressorCrankcaseHeater 25HPA6 Airflow Selections (ECM Furnaces) Airflow Selection for Variable Speed Furnaces (non--communicating) Airflow Selectionfor FV4C Fan Coils Using Non--Communicating (Non--Infinity)Thermostats Install Accessories Start--Up Followthese steps to properly start up the system: SystemFunctions And Sequence Of Operation Time Delays Compressor Operation: GENERAL INFORMATION Infinity Controlled low ambient cooling: Defrost DefrostHold ForcedDefrost Check Charge HeatingCheck Chart Procedure 2--StageControl Board FieldCo nnections TwoStage Compressor PressureSwitch Protection Control Fault Brown--OutProtection 2230V Brown--OutProtection Defeated 230V Line (Power Disconnect) Detection THERMISTOR CURVE ThermistorSensor Comparison FailedThermistor Default Operation Status Codes OPERATION Outdoor Sensor * Humidifier Solenoid Valve * Remote Room Sensor* Fig. 12 --Infinity Furna ce or Fan Coil Wiring with Communicating 2 --StageHP LEGEND 24v Factory Wiring 24v Field Wiring Field Splice Connection