Carrier 50HCQ12 Installation Instructions Manual

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13Units Without Factory--Installed Disconnect —When installing units, provide a disconnect switch ofadequate size per NEC (National Electrical Code).Disconnect sizing data is provided on the unit informativeplate. Locate on unit cabinet or within sight of the unit pernational or local codes. Do not cover unit informativeplate if mounting the disconnect on the unit cabinet.Units with Factory--Installed Disconnect —The factory--installed option disconnect switch is locatedin a weatherproof enclosure located under the maincontrol box. The manual switch handle is accessiblethrough an opening in the access panel. Discard thefactory test leads (see Fig. 22). The factory disconnect isan 80A disconnect.Units Without Disconnect OptionUnits With Disconnect Option246135L1L2L3OptionalDisconnectSwitchDisconnect factory test leads; discard.FactoryWiring11 13 13L1 L2 L3TB1208/230-3-60460-3-60575-3-60DisconnectperNECC10015Fig. 22 -- Power Wiring ConnectionsConvenience Outlets —ELECTRICAL 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 50HCQDmodels: non--powered and unit--powered. Both types providea 125--volt GFCI (ground--fault circuit--interrupter) duplexreceptacle rated at 15--A behind a hinged waterproof accesscover, located on the panel beneath the control box. SeeFig. 23.ConvenienceOutletGFCIPwd-COFuseSwitchPwd-COTransformerDisconnectAccess PanelC10857Fig. 23 -- Convenience Outlet LocationNon--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 andconduit requirements, fuse or breaker requirements anddisconnect switch size and location. Route 125--v powersupply conductors into the bottom of the utility boxcontaining 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 panel beneaththe control box. See Fig. 23.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. 24. 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 connect50HCQD12