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Carrier 50VL---A installation instructions 50VL A, A11003

Models: 50VL---A

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50VL A--

A11003

Fig. 12 Cont. - Ladder Wiring Diagram 208/230-1-60

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Carrier 50VL---A installation instructions 50VL A, A11003

Contents

Fig. 1 - Unit 50VL-A TABLE OF CONTENTSSAFETY CONSIDERATIONS Installation InstructionsINTRODUCTION RECEIVING AND INSTALLATIONInstallation on older “G” series roof curbs Step 1 - Check EquipmentFig. 2 - 50VL-A24-36Unit Dimensions 50VL--AA09462 Fig. 3 - 50VL-A42-60Unit Dimensions 50VL--AA09463 50VL--A Fig. 4 - Roof Curb DimensionsUNIT PLACEMENT ON COMMON CURB LARGE CURB50VL--A Fig. 5 - 50VL-AUnit Suggested RiggingACCESS PANELS MUST BE IN PLACE WHEN RIGGING DETAIL AStep 5 - Rig and Place Unit Step 3 - Provide ClearancesStep 4 - Field-FabricateDuctwork INSPECTIONStep 6 - Connect Condensate Drain Step 7 - Install Duct ConnectionsCONFIGURING UNITS FOR DOWNFLOW VERTICAL DISCHARGE Fig. 8 - Condensate TrapFig. 9 - Supply and Return Duct Opening Step 8 - Install Electrical ConnectionsHIGH-VOLTAGECONNECTIONS UNIT COMPONENT DAMAGE HAZARDSTANDARD CONNECTION SPECIAL PROCEDURES FOR 208-VOPERATIONCONTROL VOLTAGE CONNECTIONS TRANSFORMER PROTECTIONTable 1 - Physical Data-Unit 50VL-A 50VL--ASTART-UP CHECKING AND ADJUSTING REFRIGERANT CHARGEPRE-START-UP Step 1 — Check for Refrigerant Leaksfication feature used INDOOR AIRFLOW AND AIRFLOW ADJUST- MENTSfication feature not used SINGLE COOLING FAN SPEED SET-UPDehumidiFig. 11 - Interface Fan Board IFB CONTINUOUS FAN OPERATIONCOOLING SEQUENCE OF OPERATION Table 3 - Color Coding for Indoor Fan Motor Leads50VL--A UNITSmall Cabinet Large Cabinet50VL--A Fig. 12 - Connection Wiring Diagram 208/230-1-60 50VL A50VL A A11003Fig. 13 - Connection Wiring Diagram 208/230-3-60 50VL AA11010 50VL A A11009HR1 HR4 HR2 HR3 C Fig. 14 - Connection Wiring DiagramA10204C SATA --50VL C50VL500271 LADDERWIRING DIAGRAMFig. 14 Cont. - Ladder Wiring Diagram 50VL--AFig. 15 - Cooling Charging Chart 50VL--AA09089 Indoor Blower and Motor MAINTENANCEAir Filter PERSONAL INJURY AND UNIT DAMAGE HAZARDOUTDOOR FAN Electrical Controls and WiringFig. 17 - Unit Access Panels Fig. 16 - Fan Blade PositionHigh-PressureSwitch Pressure SwitchesLoss of Charge/Low-PressureSwitch Air Conditioner Refrigerant CircuitSynthetic Roof Precautionary Procedure TROUBLESHOOTINGSTART-UPCHECKLIST Liquid Line Filter DrierTable 10 - Troubleshooting Chart 50VL--A50VL--A S Do not use an R-22TXVTEMPERATURES Remove and Store in Job FilesI. PRELIMINARY INFORMATION MODEL NO PRESSURES