Carrier Performance 50VL-A Installation Instructions Manual

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9Horizontal Duct CoversA09076BasepanDownflow(Vertical)SupplyKnockoutBasepanDownflow(Vertical)ReturnKnockoutA09093Fig. 9 -- Supply and Return Duct OpeningStep 8 — Install Electrical ConnectionsELECTRICAL SHOCK HAZARDFailure to follow this warning could result in personalinjury or death.The unit cabinet must have an uninterrupted, unbrokenelectrical ground to minimize the possibility of personalinjury if an electrical fault should occur. This ground mayconsist of an electrical wire connected to the unit groundscrew in the control compartment, or conduit approved forelectrical ground when installed in accordance with NFPA70 (NEC) (latest edition) (in Canada, Canadian ElectricalCode CSA C22.1) and local electrical codes.! WARNINGUNIT COMPONENT DAMAGE HAZARDFailure to follow this caution may result in damage to theunit being installed.1. Make all electrical connections in accordance withNFPA 70 (NEC) (latest edition) and local electrical codesgoverning such wiring. In Canada, all electricalconnections must be in accordance with CSA standardC22.1 Canadian Electrical Code Part 1 and applicablelocal codes. Refer to unit wiring diagram.2. Use only copper conductor for connections betweenfield--supplied electrical disconnect switch and unit. DONOT USE ALUMINUM WIRE.3. Be sure that high--voltage power to unit is withinoperating voltage range indicated on unit rating plate. On3--phase units, ensure phases are balanced within 2percent. Consult local power company for correction ofimproper voltage and/or phase imbalance.4. Do not damage internal components when drillingthrough any panel to mount electrical hardware, conduit,etc.! CAUTIONHIGH--VOLTAGE CONNECTIONSThe unit must have a separate electrical service with afield--supplied, waterproof disconnect switch mounted at, or withinsight from the unit. Refer to the unit rating plate, NEC and localcodes for maximum fuse/circuit breaker size and minimum circuitamps (ampacity) for wire sizing.The field--supplied disconnect may be mounted on the unit overthe high--voltage inlet hole when the standard power andlow--voltage entry points are used. See Fig. 2 and 3 for acceptablelocation.See unit wiring label (Fig. 12, 13 and 14) and Fig. 10 for referencewhen making high voltage connections. Proceed as follows tocomplete the high--voltage connections to the unit.Single phase units:1. Run the high--voltage (L1, L2) and ground lead into thecontrol box.2. Connect ground lead to chassis ground connection.3. Locate the black and yellow wires connected to the line sideof the contactor.4. Connect field L1 to black wire on connection 11 of thecompressor contactor.50VL-- A