Carrier - 48FK

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Contents

48FK J K034 074 50FK FY JK JY034 104 Variable Air Volume Rooftop Units Controls Operation and Troubleshooting CONTENTS Page SAFETY CONSIDERATIONS 2 GENERAL 2 13 Rooftop Information 2 VAV Control System 2 Processor Board 2 PI SUPPLY AIR SET POINT P2 ECONOMIZER POSITION P3 RESET LIMIT P4 DEMAND LIMIT P5 ECONOMIZER MINIMUM POSITION P6 WARM UP SET POINT P7 SASP RESET TEMPERATURE PROCESSOR BOARD OUTPUTS CONFIGURATION HEADER AND DIP SWITCH ASSEMBLY Relay Board 5 Display Board 5 Thermistors 5 T1 SUPPLY AIR TEMPERATURE THERMISTOR T2 RETURN AIR TEMPERATURE THERMISTOR T3 SATURATED CONDENSING TEMPERATURE CIRCUIT 1 T4 SATURATED CONDENSIN ...