Carrier 50TCQD14 Installation Instructions Manual

Also see for 50TCQD: Installation instructions

Contents

20ConvenienceOutletGFCIPwd-COFuseSwitchPwd-COTransformerDisconnectAccess PanelC10361Fig. 30 -- Convenience Outlet LocationUnit--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 panel beneaththe control box. See Fig. 30.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. 31. On a unit without a unit--mounted disconnect,connect the source leads to the main terminal block(TB1).If the convenience outlet transformer is connected to theline side of a field disconnect, the conduit provided withthe unit must be used to protect the wire as they are routedfrom the transformer to the field disconnect. The end ofthe conduit with the straight connector attaches to thefield disconnect. The other end does not need to connectto the transformer; however, the conduit must be routed sothat all wiring is either in the conduit or behind the accesspanel.If the convenience outlet transformer is connected to theline side of the factory disconnect option, route the wiresthrough the web bushing located on the bottom of thedisconnect box. For the load side wiring to the factoryoption disconnect, route the wires through the hole on theright side of the disconnect. Be sure to create a drip loopat least 6 inches long.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. 31 -- Unit Powered Convenience Outlet WiringFuse on power type: The factory fuse is a Bussman“Fusetron” T--15, non--renewable screw--in (Edison base)type plug fuse.ELECTRICAL OPERATION HAZARDFailure to follow this warning could result in personalinjury or death.Using unit--mounted convenience outlets: Units withunit--mounded convenience outlet circuits will oftenrequire that two disconnects be opened to de--energizeall power to the unit. Treat all units as electricallyenergized until the convenience outlet power is alsochecked and de--energization is confirmed. ObserveNational Electrical Code Article 210, Branch Circuits,for use of convenience outlets.! WARNING