Carrier WeatherExpert 50LC 07 Series Installation Instructions Manual

Also see for 50LC 07: Controls, Start-Up, Operation and Troubleshooting Service and maintenance instructions Service and maintenance instructions

21DISCONNECT ALL POWER TO UNIT AND CONVE-NIENCE OUTLET. LOCK-OUT AND TAG-OUT ALLPOWER.Remove the blank cover plate at the convenience outlet; dis-card the blank cover.Loosen the two screws at the GFCI duplex outlet, until approx-imately 1 /2-in. (13 mm) under screw heads are exposed. Pressthe gasket over the screw heads. Slip the backing plate over thescrew heads at the keyhole slots and align with the gasket;tighten the two screws until snug (do not over-tighten).Mount the weatherproof cover to the backing plate as shown inFig. 29. Remove two slot fillers in the bottom of the cover topermit service tool cords to exit the cover. Check for full clos-ing and latching.Fig. 29 — Weatherproof Cover InstallationNon-powered typeThis type requires the field installation of a general-purpose125-v 15-A circuit powered from a source elsewhere in thebuilding. Observe national and local codes when selecting wiresize, fuse or breaker requirements and disconnect switch sizeand location. Route 125-v power supply conductors into thebottom of the utility box containing the duplex receptacle.Unit-powered typeA unit-mounted transformer is factory-installed to stepdownthe main power supply voltage to the unit to 115-v at the du-plex receptacle. This option also includes a manual switch withfuse, located in a utility box and mounted on a bracket behindthe convenience outlet; access is through the unit’s control boxaccess panel. See Fig. 28.The primary leads to the convenience outlet transformer arenot factory-connected. Selection of primary power source is acustomer option. If local codes permit, the transformer primaryleads can be connected at the line-side terminals on the unit-mounted non-fused disconnect or HACR breaker switch; thiswill provide service power to the unit when the unit disconnectswitch or HACR switch is open. Other connection methodswill result in the convenience outlet circuit being de-energizedwhen the unit disconnect or HACR switch is open. See Fig. 30.Using unit-mounted convenience outletsUnits with unit-mounted convenience outlet circuits will oftenrequire that two disconnects be opened to de-energize all pow-er to the unit. Treat all units as electrically energized until theconvenience outlet power is also checked and de-energizationis confirmed. Observe National Electrical Code Article 210,Branch Circuits, for use of convenience outlets.Fuse on power type: The factory fuse is a Bussman1 “Fusetron”T-15, non-renewable screw-in (Edison base) type plug fuse.Fig. 30 — Powered Convenience Outlet WiringDuty CycleThe unit-powered convenience outlet has a duty cycle limita-tion. The transformer is intended to provide power on an inter-mittent basis for service tools, lamps, etc; it is not intended toprovide 15-amps loading for continuous duty loads (such aselectric heaters for overnight use). Observe a 50% limit on cir-cuit loading above 8-amps.Convenience outlet usage ratingSee Fig. 31.Fig. 31 — Convenience Outlet Utilization Notice LabelTest the GFCI receptacle by pressing the TEST button on theface of the receptacle to trip and open the receptacle. Check forproper grounding wires and power line phasing if the GFCI re-ceptacle does not trip as required. Press the RESET button toclear the tripped condition.HACRThe amp rating of the HACR factory-installed option is basedon the size, voltage, indoor motor and other electrical optionsof the unit as shipped from the factory. If field-installed acces-sories are added or changed in the field (i.e. electric heat, pow-er exhaust, ERV), the HACR may no longer be of the properamp rating and therefore will need to be removed from theunit. See unit nameplate and label on factory-installed HACRfor the amp rating of the HACR that was shipped with the unitTOPTOPTOPWET LOCATIONSWET LOCATIONSCOVER - WHILE-IN-USEWEATHERPROOFBASEPLATE FORGFCI RECEPTACLEGASKETGFCI RECEPTACLENOT INCLUDED1. Bussman and Fusetron are trademarks of Cooper TechnologiesCompany.UNITVOLTAGECONNECTASPRIMARYCONNECTIONSTRANSFORMERTERMINALS208, 230 240 L1: RED +YELL2: BLU + GRAH1 + H3H2 + H4460 480L1: REDSplice BLU + YELL2: GRAH1H2 + H3H4575 600 L1: REDL2: GRAH1H2