Carrier 50TC*17 Series Service And Maintenance Instructions

27CONVENIENCE OUTLETSELECTRICAL OPERATION HAZARDFailure to follow this warning could result in personalinjury or death.Units with convenience outlet circuits may usemultiple disconnects. Check convenience outlet forpower status before opening unit for service. Locateits disconnect switch, if appropriate, and open it.Tag−out this switch, if necessary.! WARNINGTwo types of convenience outlets are offered on 50HCmodels: Non−powered and unit−powered. Both typesprovide a 125−volt Ground−Fault Circuit−Interrupter(GFCI) duplex receptacle rated at 15A behind a hingedwaterproof access cover, located on the end panel of theunit. See Fig. 32.Non−Powered TypeThis type requires the field installation of ageneral−purpose 125−volt 15A circuit powered from asource elsewhere in the building. Observe national andlocal codes when selecting wire size, fuse or breakerrequirements and disconnect switch size and location.Route 125V power supply conductors into the bottom ofthe utility box containing the duplex receptacle.ConvenienceOutletGFCIPwd-COFuseSwitchPwd-COTransformerControl BoxAccess PanelC08128Fig. 31 − Convenience Outlet LocationUnit−Powered TypeA unit−mounted transformer is factory−installed tostepdown the main power supply voltage to the unit to115−v at the duplex receptacle. This option also includes amanual switch with fuse, located in a utility box andmounted on a bracket behind the convenience outlet;access is through the unit’s control box access panel. SeeFig. 33.C10324Fig. 32 − Powered Convenience Outlet WiringUNITVOLTAGECONNECTASPRIMARYCONNECTIONSTRANSFORMERTERMINALS208,230 240 L1: RED +YELL2: BLU + GRAH1 + H3H2 + H4460 480L1: REDSplice BLU + YELL2: GRAH1H2 + H3H4575 600 L1: REDL2: GRAH1H2Wet in Use Convenience Outlet CoverThe unit has a “wet in use” convenience outlet cover thatmust be installed on the panel containing the convenienceoutlet. This cover provides protection against moistureentering the GFCI receptacle. This cover is placed in theunit control box during shipment.Duty CycleThe unit-powered convenience outlet has a duty cyclelimitation. The transformer is intended to provide poweron an intermittent basis for service tools, lamps, etc. It isnot intended to provide 15-amps loading for continuousduty loads (such as electric heaters for overnight use).Observe a 50% limit on circuit loading above 8 amps (i.e.,limit loads exceeding 8 amps to 30 minutes of operationevery hour).