Carrier JK034-074, 50FK, 48FK specification

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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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Carrier JK034-074, 50FK, 48FK specifications

Contents

Contents Controls Operation Troubleshooting General Safety Considerations Connector J1 Temperature Unit Size Terminal no Input Pin Terminal Connector J1 Thermistor InputsDIP EXV Connector 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 IFC Compressor 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 Circuit Space Temperature Reset Controls Installation Unit Control Box Arrangement, Sizes Unit Control Box Arrangement, Sizes Unit Control Box Arrangement, Sizes 088 Thermistor Resistance Voltage Drop Characteristics Space Temperature Sensor Averaging Single-Step Demand Limit MSP = Sasp + Remote Sasp Wiring Smoke Control Modes Smoke Control Switches Required for Each Mode Tubing Size Switch Functions DPS Ð Differential Pressure Switch SwitchTerminal Block START-UP Modulating Power Exhaust Differential Pressure Switch Sizes Conguration Header DIP Switch Factory Settings Potentiometer Inputs and RangesConguration Header Jumpers Switch Function Meaning Position DIP Switches Inlet Guide Vane Motor 50FK,JK034-074 Units Variable Frequency Drive Keypad Jumper Removal to Disable Motor Changing the VFD Set Point Frequency Command VFD Set Point Frequency Command for Duct PressureControl Signal Pressure VFD SET Point Pressure Start Unit Quick Normal Description Control Switch Test Display Step no Quick Test, Unit Conguration and Switch Check Quick Test, Output Relay Check Quick Test, Thermistor and Potentiometer CheckQuick Normal Description Thermistor or Test Quick Normal Test Description Relay Number Sensor 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 Units Controls Troubleshooting TroubleshootingSymptoms Probable Causes Solutions Operation Status Codes Diagnostic Codes Codes 71 to 76 THERMISTOR/RESISTOR Failure Page Test PIN Voltage DC TP3 Terminals Voltage ACTP4 TP6 PIN Terminal Voltage DC Quick Test J9 PIN Numbers Step no Pin Terminal Connector J2 Voltages Pin Terminal Connector J1 VoltagesTerminal Strip J6 Connection Resistance Reading PIN Voltage Terminal Terminal 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 Values Motor Overload Settings Required User Adjusted Defaults LAT ALMLPS MTRPage Page Call for Free Catalog Service Training PRE-START-UP II. Preliminary Checklist Items IV. Notes III. START-UP