Carrier 50TCQA Installation Instructions Manual

Also see for 48TC*D: Service and maintenance instructions Installation instructions

Contents

13Mount the weatherproof cover to the backing plate asshown in Fig. 18. Remove two slot fillers in the bottom ofthe cover to permit service tool cords to exit the cover.Check for full closing and latching.RECEPTACLENOT INCLUDEDCOVER – WHILE-IN-USEWEATHERPROOFBASE PLATE FORGFCI RECEPTACLEC09022Fig. 18 -- Weatherproof Cover InstallationNon--powered type: This type requires the fieldinstallation of a general--purpose 125--volt 15--A circuitpowered from a source elsewhere in the building. Observenational and local codes when selecting wire size, fuse orbreaker requirements and disconnect switch size andlocation. Route 125--v power supply conductors into thebottom of the utility box containing the duplex receptacle.Unit--powered type: A unit--mounted transformer isfactory--installed to stepdown the main power supplyvoltage to the unit to 115--v at the duplex receptacle. Thisoption also includes a manual switch with fuse, located ina utility box and mounted on a bracket behind theconvenience outlet; access is through the unit’s controlbox access panel. See Fig. 17.The primary leads to the convenience outlet transformerare not factory--connected. Selection of primary powersource is a customer--option. If local codes permit, thetransformer primary leads can be connected at theline--side terminals on the unit--mounted non--fuseddisconnect or HACR breaker switch; this will provideservice power to the unit when the unit disconnect switchor HACR switch is open. Other connection methods willresult in the convenience outlet circuit being de--energizedwhen the unit disconnect or HACR switch is open. SeeFig. 19.Duty Cycle: the unit--powered convenience outlet has aduty cycle limitation. The transformer is intended toprovide power on an intermittent basis for service tools,lamps, etc; it is not intended to provide 15--amps loadingfor continuous duty loads (such as electric heaters forovernight use). Observe a 50% limit on circuit loadingabove 8--amps (i.e., limit loads exceeding 8--amps to 30minutes of operation every hour).Test the GFCI receptacle by pressing the TEST button onthe face of the receptacle to trip and open the receptacle.Check for proper grounding wires and power line phasingif the GFCI receptacle does not trip as required. Press theRESET button to clear the tripped condition.C08283UNITVOLTAGECONNECTASPRIMARYCONNECTIONSTRANSFORMERTERMINALS208,230 240 L1: RED +YELL2: BLU + GRAH1 + H3H2 + H4460 480L1: REDSplice BLU +YELL2: GRAH1H2 + H3H4575 600 L1: REDL2: GRAH1H2Fig. 19 -- Powered Convenience Outlet WiringUsing unit--mounted convenience outlets: Units withunit--mounded convenience outlet circuits will oftenrequire that two disconnects be opened to de--energize allpower to the unit. Treat all units as electrically energizeduntil the convenience outlet power is also checked andde--energization is confirmed. Observe National ElectricalCode Article 210, Branch Circuits, for use of convenienceoutlets.Fuse on power type: The factory fuse is a Bussman“Fusetron” T--15, non--renewable screw--in (Edison base)type plug fuse.Factory--Option Thru--Base Connections —This service connection kit consists of a 1 / 2 --in electricalbulkhead connector and a 3 / 4 --in electrical bulkheadconnector, all factory--installed in the embossed (raised)section of the unit basepan in the condenser section. The1 / 2 --in bulkhead connector enables the low--voltage controlwires to pass through the basepan. The 3 / 4 --in electricalbulkhead connector allows the high--voltage power wiresto pass through the basepan. See Fig. 20.Check tightness of connector lock nuts before connectingelectrical conduits.50TCQA