Carrier 50EK, 50EJ, 50EW, 50EY installation instructions Roof Curb Sizes

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NOTES:

1.Unless otherwise speci®ed, all dimensions are to out- side of part.

2.Roof curb accessory is shipped disassembled.

3.All roof curb parts are to be 16 ga galvanized steel.

4.Dimensions are in inches.

NOTE: To prevent standing water in the drain pan of the indoor section and the heat exchangers, UNIT CAN ONLY BE PITCHED AS SHOWN.

UNIT LEVELING TOLERANCES DIMENSIONS*

(Degrees and Inches)

 

A

 

B

Deg.

 

in.

Deg.

 

in.

1.0

 

2.9

.50

 

.75

 

 

 

 

 

 

*From edge of unit to horizontal.

Fig. 2 Ð Roof Curb (Sizes 038-048)

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Contents Installation, Start-Up Service Instructions Roof Curb Sizes Unit Leveling Tolerances DimensionsRoof Curb Sizes Unit Size Operating Corner Weight 50EJ/EK Base Unit Dimensions, 50EJ/EK024-034Unit Size Operating Corner Weight Base Unit Dimensions, 50EJ038-048 and 50EK044Unit Size Operating Corner Weight 50EW/EY Base Unit Dimensions, 50EW/EY024-034Weight Base Unit Dimensions, 50EW038-048 and 50EY044Rigging Label Model Weight 50EJ/EK/EW/EYUnit 50EJ,EK,EW,EY Physical Data4282 4508 4795 Evaporator Fan Motor Data Make Unit Duct ConnectionsSAT Field Control Remote Start/Stop CCN COMSIO Make Electrical Connections Field Power Wiring ConnectionsPage FLA LRA MCA MOCP² Electrical Data Ð 50EJ,EK,EW,EY024-04824.2 187 254 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 Make Outdoor-Air Inlet Adjustments CCN Connection Approved Shielded CablesColor 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 VFD Set Point Pressure Voltage VFDSET Point Direct Digital Controls DIP Switch Congura Potentiometer Signal LevelsPower Exhaust Default Set Points POS Setting OpenSetting ClosedSequence of Operation Airflow Fan Performance, 50EJ/EK024-034 Ð Vertical Discharge Units16,000 Fan Performance, 50EJ048 Ð Vertical Discharge Units Air Quantity LimitsCFM CV User Dened Set Points Motor LimitationsPage Heat Interlock Relay Wiring Cooling Capacity Staging Table CV Units with 2 Compressors Stages EconomizerStages Evaporator Fan Service and Replacement LubricationManufacturer Lubricant Belt Tension Adjustment Ð To adjust belt tension Condenser-Fan AdjustmentEvaporator-Fan Motor Replacement Cooling Charging Chart Sizes Troubleshooting Typical Refrigerant Circuiting 50EJ,EK,EW,EY038,044 Typical Refrigerant Circuiting 50EJ,EW048 Control Board LED Alarms LED Error Description Troubleshooting Blinks Code CommentsDIP I/O Channel Designations Base Module Ð CVBase Module Ð VAV IAQ I/O Channel Designations Expansion Module Ð CV and VAVPage Page Packaged Service Training START-UP Checklist General START-UP Checklist