Carrier 58CTA Installation And Service Instructions Manual

Also see for 58CTA: Product data Installation, start-up, operating and service and maintenance instructions

Carrier 58CTA Installation And Service Instructions Manual Manual pdf 22 page image

ELECTRICAL SHOCK AND FIRE HAZARDFailure to follow this warning could result in serious injury,death, or property damage.The cabinet MUST have an uninterrupted or unbroken groundaccording to NEC ANSI/NFPA 70-2002 and Canadian Elec-trical Code CSA C22.1 or local codes to minimize personalinjury if an electrical fault should occur. This may consist ofelectrical wire, conduit approved for electrical ground or alisted, grounded power cord (where permitted by local code)when installed in accordance with existing electrical codes.Refer to the power cord manufacturer’s ratings for properwire gauge. Do not use gas piping as an electrical ground.FURNACE MAY NOT OPERATEFailure to follow this caution may result in furnace operationstopping and water pipes freezing during cold weather.Furnace control must be grounded for proper operation or elsecontrol will lock out. Control must remain grounded throughgreen/yellow wire routed to gas valve and manifold bracketscrew.115-V WIRINGVerify that the voltage, frequency, and phase correspond to thatspecified on unit rating plate. Also, check to be sure that serviceprovided by utility is sufficient to handle load imposed by thisequipment. Refer to rating plate or Table 7 for equipment electricalspecifications.U.S. Installations: Make all electrical connections in accordancewith National Electrical Code (NEC) ANSI/NFPA 70-2002 andany local codes or ordinances that might apply.Canadian Installations: Make all electrical connections in accor-dance with Canadian Electrical Code CSA C22.1 or authoritieshaving jurisdiction.FIRE HAZARDFailure to follow this warning could result in serious injury,death, or property damage.Do not connect aluminum wire between disconnect switchand furnace. Use only copper wire.Use a separate branch electrical circuit with a properly sized fuseor circuit breaker for this furnace. See Table 7 for wire size andfuse specifications. A readily accessible means of electricaldisconnect must be located within sight of the furnace.NOTE: Proper polarity must be maintained for 115-v wiring. Ifpolarity is incorrect, control LED status indicator light will flashrapidly and furnace will NOT operate.J-BOX RELOCATIONNOTE: If factory location of J-Box is acceptable, go to nextsection (ELECTRICAL CONNECTION TO J-BOX).NOTE: On 14″ wide casing models, the J-Box shall not berelocated to other side of furnace casing when the vent pipe isrouted within the casing.1. Remove and save two screws holding J-Box. (See Fig. 23.)NOTE: The J-Box cover need not be removed from the J-Box inorder to move the J-Box. Do NOT remove green ground screwinside J-Box. The ground screw is not threaded into the casingflange and can be lifted out of the clearance hole in casing whileswinging the front edge of the J-box outboard of the casing.2. Cut wire tie on loop in furnace wires attached to J-Box.3. Move J-Box to desired location.4. Fasten J-Box to casing with the two screws removed in Step1.5. Route J-Box wires within furnace away from sharp edges,rotating parts, and hot surfaces.Fig. 22—Field Wiring DiagramA95236115-VOLT FIELD-SUPPLIEDFUSEDDISCONNECTJUNCTIONBOXCONTROLBOX24-VOLTTERMINALBLOCKTHREE-WIREHEATING-ONLYFIVEWIRENOTE 2NOTE 11-STAGETHERMOSTATTERMINALS FIELD-SUPPLIEDFUSED DISCONNECTCONDENSINGUNITFURNACECOMRW C Y R GGNDGNDFIELD 24-VOLT WIRINGFIELD 115-, 208/230-, 460-VOLT WIRINGFACTORY 24-VOLT WIRINGFACTORY 115-VOLT WIRINGConnect Y/Y2-terminal as shown for proper operation.Some thermostats require a "C" terminal connection as shown.If any of the original wire, as supplied, must be replaced, usesame type or equivalent wire.208/230- OR460-VOLTTHREEPHASE208/230-VOLTSINGLEPHASEWHTBLKWHTBLKW/W1W2Y/Y2GNOTES: 1.2.3.20→→→