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Carrier EY024-048, 48EJ, EW, EK installation instructions Ð Typical CV 24-vControl Circuit

Models: EY024-048 EK 48EJ

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Fig. 60 Ð Typical CV 24-v Control Circuit

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Fig. 60 Ð Typical CV 24-v Control Circuit

Image 55

Carrier EY024-048, 48EJ, EW, EK installation instructions Ð Typical CV 24-vControl Circuit

Contents

Step 10 Ð Position Power Exhaust/Barometric CONTENTSSAFETY CONSIDERATIONS INSTALLATION Step 1 Ð Provide Unit SupportInstructions continued on page Step 3 Ð Field Fabricate DuctworkUNIT LEVELING TOLERANCES DIMENSIONS Fig. 1 Ð Roof Curb SizesDegrees and Inches UNIT LEVELING TOLERANCES DIMENSIONS Fig. 2 Ð Roof Curb SizesDegrees and Inches Fig. 3 Ð Base Unit Dimensions, 48EJ,EK024-034 Fig. 4 Ð Base Unit Dimensions, 48EJ,EK038-048 Fig. 5 Ð Base Unit Dimensions, 48EW,EY024-034 Fig. 6 Ð Base Unit Dimensions, 48EW,EY038-048 NOTICE TO RIGGERS ALL PANELS MUST BE IN PLACE WHEN RIGGINGFig. 7 Ð Rigging Label Table 1 Ð Physical Data Table 1 Ð Physical Data cont Fig. 9 Ð Air Distribution Ð Thru-the-Side Fig. 8 Ð Air Distribution Ð Thru-the-BottomFig. 10 Ð Flue Hood Location Fig. 13 Ð Field Gas Piping Fig. 11 Ð Combustion Fan Housing LocationFig. 12 Ð Condensate Drain Trap Piping Details Typical Roof Curb or Slab Mount Shown·support a eld test for eld checkout Fig. 15 Ð Indoor Air Quality Sensor Conguration Fig. 14 Ð Field Control Remote Start/StopStep 8 Ð Make Electrical Connections Fig. 16 Ð Control Board Diagram Table 4 Ð Electrical Data Table 4 Ð Electrical Data cont UNIT Table 4 Ð Electrical Data contFig. 18 Ð Control Box Diagram Sizes Fig. 17 Ð Field Power Wiring ConnectionsCV or VAV Units Fig. 19 Ð Control Box Diagram SizesFig. 21 Ð Field Control Temperature Sensor Wiring Fig. 20 Ð Field Control Thermostat WiringTable 5 Ð CCN Connection Approved Shielded Cables Fig. 22 Ð Space Temperature Averaging WiringTable 6 Ð Color Code Recommendations Step 9 Ð Make Outdoor-AirInlet AdjustmentsFig. 26 Ð Adding Seal Strip to Hood Top Fig. 23 Ð Adding Seal Strip to Top of Hood SidesFig. 25 Ð Adding Seal Strip to Mounting Flange of Hood SidesFig. 30 Ð Mounting Angle Without Tabs Attached to Filter Track AssemblyFig. 28 Ð Adding Foam Strip to Hood Side Fig. 29 Ð Adding Foam Strip to Blockoff BaffleFig. 31 Ð Mounting Angle With Tabs Attached to Filter Track AssemblyFig. 32 Ð Attaching Seal Strip to Filter Cover Enthalpy Control Fig. 34 Ð Wiring Connections for Solid-StateFig. 35 Ð Psychrometric Chart for Enthalpy Control HH57AC077Exhaust Mounting Details Fig. 37 Ð Barometric Relief Damper and PowerFig. 39 Ð Motormaster III Baffle Details Fig. 38 Ð Pressure Transducer LocationsSTART-UP Table 7 Ð VFD Supply Air Pressure Set Point Fig. 41 Ð VFD Factory-InstalledJumpersTable 8 Ð Potentiometer Signal Levels Direct Digital Controls DIP Switch ConguraTable 10 Ð DIP Switch Conguration Table 9 Ð Power Exhaust Default Set PointsTable 11 Ð DIP Switch Factory Settings AIRFLOW AIRFLOW 3.20 Table 16 Ð Motor Limitations Table 15 Ð Fan Performance Ð Power ExhaustTable 17 Ð Air Quantity Limits Sequence of OperationTable 18 Ð User Dened Set Points GAS HEATING, VARIABLE AIR VOLUME VAV UNITS Fig. 43 Ð Space Temperature Reset Wiring Fig. 42 Ð Heat Interlock Relay WiringTable 19 Ð Smoke Control Modes Fig. 44 Ð Field-SuppliedSmoke Detector WiringFig. 45 Ð Door Latch SERVICEwith 2 Compressors with 2 Compressors and 2 UnloadersLubrication Fig. 46 Ð Spark Gap AdjustmentFig. 47 Ð Typical Gas Heating Section Evaporator Fan Service and ReplacementBelt Tension Adjustment Ð To adjust belt tension Evaporator Fan Performance AdjustmentFig. 49 Ð Evaporator-FanAlignment and Adjustment Evaporator-FanMotor ReplacementCondenser-FanAdjustment Gas Valve AdjustmentFig. 53 Ð Cooling Charging Chart Fig. 50 Ð Belt Tension AdjustmentFig. 51 Ð Condenser-FanAdjustment Fig. 52 Ð Cooling Charging ChartFig. 54 Ð Gas Valve Fig. 55 Ð Main Burner Removal Ð Adjustable Heat Anticipator Page Fig. 57 Ð Typical VAV 115-vControl Circuit Fig. 58 Ð Typical CV 115-vControl Circuit Fig. 59 Ð Typical VAV 24-vControl Circuit Fig. 60 Ð Typical CV 24-vControl Circuit TROUBLESHOOTING HPS Ð High-PressureSwitch LEGEND FPS Ð Freeze Protection SwitchLPS Ð Low-PressureSwitch HPS Ð High-PressureSwitch LEGEND FPS Ð Freeze Protection SwitchLPS Ð Low-PressureSwitch LEGEND IDM Ð Induced-DraftMotor Fig. 64 Ð IGC Control Heating and CoolingIGC Ð Integrated Gas Unit Controller Table 23 Ð Control Board LED Alarms Table 22 Ð IGC Control Board LED AlarmsPage PACKAGED SERVICE TRAINING PRESSURES TEMPERATURESPRE-START-UP ELECTRICALGENERAL