Manuals / Carrier / Household Appliance / Electric Heater

Carrier 48EZ(N)-A installation instructions 48EZ A, A10208C

Models: 48EZ(N)-A

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48EZ A--

A10208C

Fig. 15 - 208/230-3-60 Connection Wiring Diagram, Unit 48EZ-A

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Carrier 48EZ(N)-A installation instructions 48EZ A, A10208C

Contents

SAFETY CONSIDERATIONS TABLE OF CONTENTSFig. 1 - Unit 48EZ-A Installation InstructionsInstallation on older “G” series roof curbs RECEIVING AND INSTALLATIONINTRODUCTION Step 1 - Check EquipmentA09450 Fig. 2 - 48EZ-A24-36Unit Dimensions48EZ --A A09451 Fig. 3 - 48EZ-A42-60Unit Dimensions48EZ --A B C G H F A E D Fig. 4 - Roof Curb DimensionsSMALL CURB ROOF CURB DETAILStep 4 - Provide Clearances Step 3 - Field Fabricate DuctworkStep 5 - Rig and Place Unit InspectionStep 8 - Install Gas Piping Step 7 - Install Flue HoodStep 6 - Connect Condensate Drain Rigging/Lifting of Unit See Fig.48EZ --A FIRE OR EXPLOSION HAZARDFig. 7 - Sediment Trap Configuring Units for Downflow Vertical Discharge Step 9 - Install Duct ConnectionsFig. 8 - Supply and Return Duct Opening ELECTRICAL SHOCK HAZARD48EZ --A Table 1 - Physical Data - Unit 48EZ-ATable 2 - Maximum Gas Flow Capacity Table 1 - Physical Data - Unit 48EZ-ACont’dTable 3 - Heating Inputs 48EZ --ASpecial Procedures for 208-VOperation Step 10 - Install Electrical ConnectionsHigh-VoltageConnections UNIT COMPONENT DAMAGE HAZARDPRE-START-UP Balance Point Setting-Thermidistator HybridControl Voltage Connections ThermostatSTART-UP Step 3 - Start-upHeating and Make Adjust- mentsStep 1 - Check for Refrigerant Leaks Step 2 - Unit Sequence of OperationFig. 11 - Burner Assembly Adjust Gas InputCheck Gas Input Table 4 - Altitude Derate Multiplier for U.S.AAirflow and Temperature Rise Step 4 - Start-upCooling and Make Adjust- mentsLimit Switches Rollout SwitchIndoor Airflow and Airflow Adjustments Checking and Adjusting Refrigerant ChargeGas Heating Fan Speed Set-up UNIT OPERATION HAZARDTable 6 - Color Coding for Indoor Fan Motor Leads Continuous Fan OperationFig. 13 - Interface Fan Board IFB 48EZ --A48EZ--A Heating Rise 48EZ--A1234 48EZ--A1295 48EZ--A1402 48EZ--A1402 48EZ--AUNIT 48EZ--AUNIT 48EZ--AA10207C 48EZ AA10207L 48EZ AA10208C 48EZ AA10208L 48EZ AA08019 Fig. 16 - Cooling Charging Table-Subcooling48EZ --A Cleaning the Blower Motor and Wheel MAINTENANCEAir Filter Indoor Blower and MotorInduced Draft combustion air Blower Assembly Limit SwitchFig. 17 - Blower Housing and Flue Collector Box Fig. 18 - Unit Access PanelsOutdoor Fan Electrical Controls and WiringRefrigerant Circuit Fig. 19 - Removal of Motor and Blower WheelPage Fig. 24 - Refrigerant Circuit High-PressureSwitchCopeland Scroll Compressor Puron Refrigerant EXPLOSION HAZARDRefrigerant System UNIT OPERATION AND SAFETY HAZARDCompressor Oil 48EZ --ASTART-UPCHECKLIST TROUBLESHOOTINGSynthetic Roof Precautionary Procedure Liquid Line Filter Drier48EZ --A SYMPTOM48EZ --A Table 13 - Troubleshooting Guide-HeatingTable 14 - Troubleshooting Guide-LEDError Codes Remove and Store in Job Files TEMPERATURESI. PRELIMINARY INFORMATION MODEL NO PRESSURES