Manuals / Carrier / Household Appliance / Electric Heater

Carrier 48EZ(N)-A installation instructions 48EZ A, A10208L

Models: 48EZ(N)-A

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48EZ A--

A10208L

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

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Carrier 48EZ(N)-A installation instructions 48EZ A, A10208L

Contents

Fig. 1 - Unit 48EZ-A TABLE OF CONTENTSSAFETY CONSIDERATIONS Installation InstructionsINTRODUCTION RECEIVING AND INSTALLATIONInstallation on older “G” series roof curbs Step 1 - Check EquipmentFig. 2 - 48EZ-A24-36Unit Dimensions 48EZ --AA09450 Fig. 3 - 48EZ-A42-60Unit Dimensions 48EZ --AA09451 SMALL CURB Fig. 4 - Roof Curb DimensionsB C G H F A E D ROOF CURB DETAILStep 5 - Rig and Place Unit Step 3 - Field Fabricate DuctworkStep 4 - Provide Clearances InspectionStep 6 - Connect Condensate Drain Step 7 - Install Flue HoodStep 8 - Install Gas Piping Rigging/Lifting of Unit See Fig.FIRE OR EXPLOSION HAZARD Fig. 7 - Sediment Trap48EZ --A Fig. 8 - Supply and Return Duct Opening Step 9 - Install Duct ConnectionsConfiguring Units for Downflow Vertical Discharge ELECTRICAL SHOCK HAZARDTable 1 - Physical Data - Unit 48EZ-A 48EZ --ATable 3 - Heating Inputs Table 1 - Physical Data - Unit 48EZ-ACont’dTable 2 - Maximum Gas Flow Capacity 48EZ --AHigh-VoltageConnections Step 10 - Install Electrical ConnectionsSpecial Procedures for 208-VOperation UNIT COMPONENT DAMAGE HAZARDControl Voltage Connections Balance Point Setting-Thermidistator HybridPRE-START-UP ThermostatStep 1 - Check for Refrigerant Leaks Step 3 - Start-upHeating and Make Adjust- mentsSTART-UP Step 2 - Unit Sequence of OperationCheck Gas Input Adjust Gas InputFig. 11 - Burner Assembly Table 4 - Altitude Derate Multiplier for U.S.ALimit Switches Step 4 - Start-upCooling and Make Adjust- mentsAirflow and Temperature Rise Rollout SwitchGas Heating Fan Speed Set-up Checking and Adjusting Refrigerant ChargeIndoor Airflow and Airflow Adjustments UNIT OPERATION HAZARDFig. 13 - Interface Fan Board IFB Continuous Fan OperationTable 6 - Color Coding for Indoor Fan Motor Leads 48EZ --A48EZ--A 48EZ--A Heating Rise48EZ--A 123448EZ--A 129548EZ--A 140248EZ--A 140248EZ--A UNIT48EZ--A UNIT48EZ A A10207C48EZ A A10207L48EZ A A10208C48EZ A A10208LFig. 16 - Cooling Charging Table-Subcooling 48EZ --AA08019 Air Filter MAINTENANCECleaning the Blower Motor and Wheel Indoor Blower and MotorFig. 17 - Blower Housing and Flue Collector Box Limit SwitchInduced Draft combustion air Blower Assembly Fig. 18 - Unit Access PanelsRefrigerant Circuit Electrical Controls and WiringOutdoor Fan Fig. 19 - Removal of Motor and Blower WheelPage Copeland Scroll Compressor Puron Refrigerant High-PressureSwitchFig. 24 - Refrigerant Circuit EXPLOSION HAZARDCompressor Oil UNIT OPERATION AND SAFETY HAZARDRefrigerant System 48EZ --ASynthetic Roof Precautionary Procedure TROUBLESHOOTINGSTART-UPCHECKLIST Liquid Line Filter DrierSYMPTOM 48EZ --ATable 13 - Troubleshooting Guide-Heating Table 14 - Troubleshooting Guide-LEDError Codes48EZ --A I. PRELIMINARY INFORMATION MODEL NO TEMPERATURESRemove and Store in Job Files PRESSURES