Manuals / Carrier / Household Appliance / Air Conditioner

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

Models: 50EK 50EY 50EW 50EJ

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

Contents

IMPORTANT Ð READ BEFORE INSTALLING CONTENTSINSTALLATION Step 1 Ð Provide Unit Support SAFETY CONSIDERATIONSDegrees and Inches Fig. 1 Ð Roof Curb SizesUNIT LEVELING TOLERANCES DIMENSIONS Degrees and Inches Fig. 2 Ð Roof Curb SizesUNIT LEVELING TOLERANCES DIMENSIONS Fig. 3 Ð Base Unit Dimensions, 50EJ/EK024-034 UNIT SIZE Fig. 5 Ð Base Unit Dimensions, 50EW/EY024-034 UNIT SIZE Fig. 7 Ð Rigging Label WHEN RIGGINGNOTICE TO RIGGERS ALL PANELS MUST BE IN PLACE OPERATING WEIGHT lb Table 1 Ð Physical DataFactory Speed Setting rpm HIGH-PRESSURESWITCH psigOPERATING WEIGHT lb Table 1 Ð Physical Data contFactory Speed Setting rpm HIGH-PRESSURESWITCH psigTable 2 Ð Evaporator Fan Motor Data Step 4 Ð Make Unit Duct ConnectionsFig. 8 Ð Air Distribution Ð Thru-the-Bottom Fig. 9 Ð Air Distribution Ð Thru-the-SideFeatures with Thermostat Control of Unit Fig. 11 Ð Field Control Remote Start/Stop Fig. 12 Ð Control Board Diagram Step 7 Ð Make Electrical Connections Fig. 13 Ð Field Power Wiring Connections1.Remove cap from red 208-vwire Table 4 Ð Electrical Data Ð 50EJ,EK,EW,EY024-048 150/150 200/200 225/200 225/225 23.6 23.6 Fig. 15 Ð Control Box Diagram Sizes Fig. 14 Ð Control Box Diagram SizesPEC − Power Exhaust Controller PEC Ð Power Exhaust ControllerFig. 16 Ð Field Control Thermostat Wiring Step 8 Ð Make Outdoor-AirInlet AdjustmentsFig. 17 Ð Field Control Temperature Sensor Wiring Table 5 Ð CCN Connection Approved Shielded CablesMounting Flange of Hood Sides Fig. 18 Ð Adding Seal Strip to Top of Hood SidesFig. 20 Ð Adding Seal Strip to Fig. 21 Ð Adding Seal Strip to Attached to Filter Track AssemblyHood Top Mounting Flange Fig. 22 Ð Adding Foam Strip to Cross MemberFig. 30 Ð Psychrometric Chart for Fig. 29 Ð Wire Connections for Solid StateFig. 27 Ð Attaching Seal Strip to Filter Cover Fig. 28 Ð Differential Enthalpy ControlExhaust Mounting Details Fig. 31 Ð Barometric Relief Damper and PowerFig. 33A Ð Motormaster III Sensor Location Sizes Fig. 32 Ð Pressure Transducer LocationsFig. 33C Ð Motormaster III Sensor Location START-UP Table 9 Ð Power Exhaust Default Set Points Direct Digital Controls DIP Switch ConguraTable 8 Ð Potentiometer Signal Levels SETTING Sequence of Operation AIRFLOW AVAILABLE EXTERNAL STATIC PRESSURE in. wg Table 15 Ð Air Quantity Limits Table 17 Ð User Dened Set Points Table 16 Ð Motor LimitationsThe control module will operate economizer, run diag- nostics to monitor alarms/alerts at all times, and respond to CCN communications to perform any congured network POC product outboard control functions such as time/ outdoor-airtemperature broadcast and global occupancy broad- cast. When the optional expansion I/O board is employed, it will perform a periodic scan and maintain a database of ex- panded I/O points perform Fire/Smoke control power ex- haust required if in Occupied mode, perform IAQ control and monitor the fan, lter, demand limit, and eld-appliedstatus with accessories Fig. 36 Ð Space Temperature Sensor Wiring Fig. 35 Ð Heat Interlock Relay WiringTable 18 Ð Cooling Capacity Staging Table SERVICECV Units with 2 Compressors Table 19 Ð Cooling Capacity Staging Tableand Adjustment Evaporator Fan Service and ReplacementLubrication Fig. 38 Ð Evaporator-FanPulley AlignmentCondenser-FanAdjustment Belt Tension Adjustment Ð To adjust belt tensionEvaporator-FanMotor Replacement Fig. 39 Ð Belt Tension AdjustmentFig. 42 Ð Cooling Charging Chart Sizes Fig. 41 Ð Cooling Charging Chart Sizes50EJ,EK,EW,EY024-034 TROUBLESHOOTINGFig. 43 Ð Typical Refrigerant Circuiting 50EJ,EK,EW,EY038,044 Fig. 44 Ð Typical Refrigerant CircuitingLEGEND FPS Ð Freeze Protection Switch HPS Ð High-PressureSwitch50EJ,EW048 Fig. 45 Ð Typical Refrigerant CircuitingLEGEND FPS Ð Freeze Protection Switch HPS Ð High-PressureSwitchTable 20 Ð Control Board LED Alarms Base Module Ð CV Table 21 Ð I/O Channel DesignationsTable 22 Ð I/O Channel Designations Base Module Ð VAVModule Ð CV and VAV Table 23 Ð I/O Channel Designations ExpansionPage Page PACKAGED SERVICE TRAINING TEMPERATURES START-UPCHECKLISTPRE-START-UP ELECTRICALGENERAL START-UPCHECKLIST cont