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Carrier installation instructions 48EZ A, 208/230-1-60Wiring Diagram, Unit 48EZ-A

Models: 48EZ-A

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48EZ A--

A09068

Fig. 15 - 208/230-1-60 Wiring Diagram, Unit 48EZ-A

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Carrier installation instructions 48EZ A, 208/230-1-60Wiring Diagram, Unit 48EZ-A

Contents

SAFETY CONSIDERATIONS TABLE OF CONTENTSFig. 1 - Unit 48EZ-A Installation InstructionsInstallation on older “G” series roof curbs RECEIVING AND INSTALLATIONINTRODUCTION Step 1 — Check Equipment48EZ --A Fig. 2 - 48EZ-A24-36Unit DimensionsA09450 48EZ --A Fig. 3 - 48EZ-A42-60Unit DimensionsA09451 SMALL CURB Fig. 4 - Roof Curb DimensionsROOF CURB DETAIL LARGE CURBStep 5 — Rig and Place Unit ACCESS PANELS MUST BE IN PLACE WHEN RIGGINGStep 4 — Provide Clearances Fig. 5 - 48EZ-ASuggested RiggingStep 8 — Install Gas Piping Step 7 — Install Flue HoodStep 6 — Connect Condensate Drain InspectionFIRE OR EXPLOSION HAZARD TEE NIPPLE CAPFig. 7 - Sediment Trap 48EZ --A48EZ --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 --AConfiguring Units for Downflow Vertical Discharge Step 9 — Install Duct ConnectionsAlternate Method UNIT COMPONENT DAMAGE HAZARDReturn & Supply Duct Panels from Return Duct PanelsUnderside of Base Alternate Method Fig. 8 - Supply and Return Duct OpeningSpecial Procedures for 208-VOperation Step 10 — Install Electrical ConnectionsHigh-VoltageConnections Control Voltage ConnectionsPRE-START-UP Balance Point Setting-Thermidistator Hybrid48EZ ThermostatFig. 11 - Burner Assembly Step 3 - Start-upHeating and Make Adjust- mentsSTART-UP Step 1 — Check for Refrigerant LeaksCheck Heating Control Adjust Gas InputCheck Gas Input Fig. 12 - Monoport BurnerLimit Switches Airflow and Temperature RiseRollout Switch Check Burner FlameChecking and Adjusting Refrigerant Charge Step 4 - Start-upCooling and Make Adjust- mentsIndoor Airflow and Airflow Adjustments Checking Cooling Control OperationContinuous Fan Operation Gas Heating Fan Speed Set-upTable 6 – Color Coding for Indoor Fan Motor Leads Fig. 14 - Interface Fan Board IFBTable 8 – 48EZ-AWet Coil Pressure Drop IN. W.C Table 7 – Filter Pressure Drop Table IN. W.C48EZ --A FILTER SIZEHeating 48EZ --A1234 48EZ --A1402 48EZ --A1445 48EZ --A48EZ A Fig. 15 - 208/230-1-60Wiring Diagram, Unit 48EZ-A48EZ --A Fig. 16 - 208/230-3-60Wiring Diagram, Unit 48EZ-AA09209 48EZ --A Fig. 17 - Cooling Charging Table-SubcoolingA08019 Cleaning the Blower Motor and Wheel MAINTENANCEAir Filter Indoor Blower and MotorInduced Draft combustion air Blower Assembly Limit SwitchFig. 18 - Blower Housing and Flue Collector Box Fig. 19 - Unit Access PanelsOutdoor Fan Electrical Controls and WiringRefrigerant Circuit Fig. 20 - Removal of Motor and Blower WheelPage Fig. 25 - Refrigerant Circuit High-PressureSwitchCopeland Scroll Compressor Puron Refrigerant EXPLOSION HAZARDLEGEND UNIT OPERATION AND SAFETY HAZARDRefrigerant System Compressor OilSTART-UPCHECKLIST TROUBLESHOOTINGSynthetic Roof Precautionary Procedure Liquid Line Filter Drier48EZ --A SYMPTOMTable 13 – Troubleshooting Guide–LEDError Codes Table 12 – Troubleshooting Guide–Heating48EZ --A Remove and Store in Job Files TEMPERATURESI. PRELIMINARY INFORMATION MODEL NO PRESSURESCatalog No: 48EZ---06SI 48EZ --AEdition Date: 08/09 Replaces: 48EZ---05SI