Carrier 50TCQA04 Installation Instructions Manual

Also see for WeatherMaker 50TCQA07: Installation instructions Installation instructions Service and maintenance instructions

20de--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.B50HJ542739Maximum Continuous use : 8 Amps 24/7Convenience Outlet UtilizationNOTICEC13415Fig. 27 -- Convenience Outlet Utilization Notice LabelTest 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.Factory--Option Thru--Base Connections —This service connection kit consists of two 1/2 --in. electricalbulkhead connectors and a 3/4 --in. electrical bulkheadconnector, all factory--installed in the embossed (raised)section of the unit basepan in the condenser section. The3/4 --in. bulkhead connector enables the low--voltage controlwires to pass through the basepan. The 1/2 --in. electricalbulkhead connector allows the high--voltage power wires topass through the basepan. See Fig. 28.LOW VOLTAGECONDUITCONNECTORHIGH VOLTAGECONDUITCONNECTORC13412Fig. 28 -- Thru--Base Connection FittingsCheck tightness of connector lock nuts before connectingelectrical conduits.Field--supplied and field--installed liquid tight conduitconnectors and conduit may be attached to the connectors onthe basepan. Pull correctly rated high voltage and lowvoltage through appropriate conduits. Connect the powerconduit to the internal disconnect (if unit is so equipped) orto the external disconnect (through unit side panel). A holemust be field cut in the main control box bottom on the leftside so the 24--v control connections can be made. Connectcontrol power conduit to the unit control box at this hole.Units Without Thru--Base Connections —1. Install power wiring conduit through side panelopenings. Install conduit between disconnect andcontrol box.2. Install power lines to terminal connections as shownin Fig. 18.Voltage to compressor terminals during operation must bewithin voltage range indicated on unit nameplate. SeeTable 30. On 3--phase units, voltages between phases mustbe balanced within 2% and the current within 10%. Usethe formula shown in the legend for Table 30, Note 3 todetermine the percent of voltage imbalance. Operation onimproper line voltage or excessive phase imbalanceconstitutes abuse and may cause damage to electricalcomponents. Such operation would invalidate anyapplicable Carrier warranty.Field Control Wiring —The 50TCQ unit requires an external temperature controldevice. This device can be a thermostat (field--supplied) ora PremierLinkt controller (available as factory--installedoption or as field--installed accessory, for use on a CarrierComfort NetworkR system or as a stand alone control) orthe RTU Open Controller for Building ManagementSystems using non--CCN protocols (RTU Open controlleris available as a factory--installed option only).Thermostat —Select a Carrier--approved accessory thermostat. Whenelectric heat is installed in the 50TCQ unit, the thermostatmust be capable of energizing the G terminal (to energizethe Indoor Fan Contactor) whenever there is a space callfor heat (energizing the W1 terminal). The accessorythermostats listed on the unit price pages can provide thissignal but they are not configured to enable this signal asshipped.XCGW2CW2GW1O/B/Y2 Y2RW1RY1 Y1THERMOSTAT(Note 1)(Note 2)Note 1: Typical multi-function marking. Follow manufacturer’s configurationinstructions to select Y2. Do not configure for O output.Note 2: W2 connection not required on units without electric heating.Field WiringCentralTerminalBoardTypicalThermostatConnectionsC09012Fig. 29 -- Low--Voltage ConnectionsInstall the accessory thermostat according to installationinstructions included with the accessory.