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Carrier 50EJ, 50EW, 50EY, 50EK installation instructions

Models: 50EK 50EY 50EW 50EJ

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Troubleshooting Control Box Diagram Sizes Potentiometer Signal Levels Field Power Wiring Connections Condenser-Fan Adjustment Setting Open Checklist Weight Packaged Service Training

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Page 51 Page 53

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Carrier 50EJ, 50EW, 50EY, 50EK installation instructions

Page 51 Page 53

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Contents

Installation, Start-Up Service Instructions Unit Leveling Tolerances Dimensions Roof Curb Sizes Roof Curb Sizes Base Unit Dimensions, 50EJ/EK024-034 Unit Size Operating Corner Weight 50EJ/EK Base Unit Dimensions, 50EJ038-048 and 50EK044 Unit Size Operating Corner Weight Base Unit Dimensions, 50EW/EY024-034 Unit Size Operating Corner Weight 50EW/EY Base Unit Dimensions, 50EW038-048 and 50EY044 Weight Model Weight 50EJ/EK/EW/EY Rigging Label Physical Data Unit 50EJ,EK,EW,EY 4282 4508 4795 Make Unit Duct Connections Evaporator Fan Motor Data SAT Field Control Remote Start/Stop COM CCNSIO Field Power Wiring Connections Make Electrical ConnectionsPage Electrical Data Ð 50EJ,EK,EW,EY024-048 FLA LRA MCA MOCP² 24.2 187 254 57.1 266 39.1 228 46.2 225/200 82.4 100 12.6 23.6 95.0 110 43.3 86.6 104.1 187 254 69.2 345 59.4 187 254 82.1 446 69.2 345 74.8 Control Box Diagram Sizes CCN Connection Approved Shielded Cables Make Outdoor-Air Inlet AdjustmentsColor Code Recommendations Adding Seal Strip to Top of Hood Sides Adding Seal Strip to Hood Top Mounting Flange Attaching Seal Strip To Filter Cover Barometric Relief Damper and Power Exhaust Mounting Details Pressure Transducer Locations Ð Motormaster III Sensor Location Pressure Voltage VFD VFD Set PointSET Point Potentiometer Signal Levels Direct Digital Controls DIP Switch ConguraPower Exhaust Default Set Points Setting Open SettingClosed POS Sequence of Operation Fan Performance, 50EJ/EK024-034 Ð Vertical Discharge Units Airflow 16,000 Air Quantity Limits Fan Performance, 50EJ048 Ð Vertical Discharge UnitsCFM CV Motor Limitations User Dened Set PointsPage Heat Interlock Relay Wiring Stages Economizer Cooling Capacity Staging Table CV Units with 2 CompressorsStages Lubrication Evaporator Fan Service and ReplacementManufacturer Lubricant Condenser-Fan Adjustment Belt Tension Adjustment Ð To adjust belt tensionEvaporator-Fan Motor Replacement Cooling Charging Chart Sizes Troubleshooting Typical Refrigerant Circuiting 50EJ,EK,EW,EY038,044 Typical Refrigerant Circuiting 50EJ,EW048 LED Error Description Troubleshooting Blinks Code Comments Control Board LED AlarmsDIP Base Module Ð CV I/O Channel DesignationsBase Module Ð VAV I/O Channel Designations Expansion Module Ð CV and VAV IAQPage Page Packaged Service Training START-UP Checklist START-UP Checklist General

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