Carrier JK034-074, 50FK, 48FK specifications

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Fig. 55 Ð Typical Wiring Schematic; 48FK,JK and 50FK,FY,JK,JY Units (054-074 Shown) (cont)

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Contents Contents Controls Operation TroubleshootingGeneral Safety ConsiderationsConnector J1 Temperature Unit Size Terminal no Input Pin Terminal Connector J1 Thermistor InputsDIP EXVConnector J2 Status Switch Unit Size Terminal no Status Switch Inputs034-104 RNT Ð ReturnPage Output PIN Name Rating Device Terminal Output Pin and Terminal AssignmentsHIR IFCCompressor Operation Thermistor T1 Location, 50FK,JK034-048 Units Thermistor T1 Location, 50FK,JK054-074 Units Thermistor T2 Location, Size 034-048 Units Thermistor T3 and T4 Locations, Size 054-104 Units Input Integrated CircuitSpace Temperature Reset Controls InstallationUnit Control Box Arrangement, Sizes Unit Control Box Arrangement, Sizes Unit Control Box Arrangement, Sizes 088 Thermistor Resistance Voltage Drop CharacteristicsSpace Temperature Sensor Averaging Single-Step Demand Limit MSP = Sasp + Remote Sasp Wiring Smoke Control Modes Smoke Control Switches Required for Each ModeTubing Size Switch FunctionsDPS Ð Differential Pressure Switch SwitchTerminal Block START-UP Modulating Power Exhaust Differential Pressure Switch SizesConguration Header DIP Switch Factory Settings Potentiometer Inputs and RangesConguration Header Jumpers Switch Function Meaning Position DIP SwitchesInlet Guide Vane Motor 50FK,JK034-074 Units Variable Frequency Drive Keypad Jumper Removal to Disable MotorChanging the VFD Set Point Frequency Command VFD Set Point Frequency Command for Duct PressureControl Signal Pressure VFD SET Point PressureStart Unit Quick Normal Description Control Switch Test Display Step no Quick Test, Unit Conguration and Switch CheckQuick Test, Output Relay Check Quick Test, Thermistor and Potentiometer CheckQuick Normal Description Thermistor or Test Quick Normal Test Description Relay NumberSensor Resistance Values Operating InformationPage Component Arrangement, 034-048 Units Component Arrangement, 054-104 Units Page Modulating Power Exhaust Component Locations Sizes Modulating Power Exhaust Component Locations Sizes Page Compressor Loading and Unloading Sequences Cooling Size 064 Units Cooling Size 054 UnitsCooling Size 088 Units Cooling Size 104 UnitsControls Troubleshooting TroubleshootingSymptoms Probable Causes Solutions Operation Status CodesDiagnostic Codes Codes 71 to 76 THERMISTOR/RESISTOR Failure Page Test PIN Voltage DC TP3 Terminals Voltage ACTP4 TP6PIN Terminal Voltage DC Quick Test J9 PIN Numbers Step noPin Terminal Connector J2 Voltages Pin Terminal Connector J1 VoltagesTerminal Strip J6 Connection Resistance Reading PIN Voltage TerminalTerminal Strip J5 Connector Resistance Reading Enthalpy Sensor CheckoutQuick Test J5 PIN Numbers Step no Variable Frequency Drive Parameter Group Default Value Carrier Default Program Parameter ValuesMotor Overload Settings Required User Adjusted DefaultsLAT ALMLPS MTRPage Page Call for Free Catalog Service TrainingPRE-START-UP II. Preliminary Checklist ItemsIV. Notes III. START-UP