Carrier 50TCQD14 Installation Instructions Manual

Also see for 50TCQD: Installation instructions

Contents

21Installing Weatherproof Cover: A weatherproofwhile-in-use cover for the factory-installed convenienceoutlets is now required by UL standards. This covercannot be factory-mounted due its depth; it must beinstalled at unit installation. For shipment, theconvenience outlet is covered with a blank cover plate.The weatherproof cover kit is shipped in the unit’s controlbox. The kit includes the hinged cover, a backing plateand gasket.DISCONNECT ALL POWER TO UNIT ANDCONVENIENCE OUTLET.Remove the blank cover plate at the convenience outlet;discard the blank cover.Loosen the two screws at the GFCI duplex outlet, untilapproximately 1 / 2 -inch (13 mm) under screw heads areexposed. Press the gasket over the screw heads. Slip thebacking plate over the screw heads at the keyhole slotsand align with the gasket; tighten the two screws untilsnug (do not over-tighten).Mount the weatherproof cover to the backing plate asshown in Fig. 32. 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. 32 -- Weatherproof Cover InstallationFactory--Option Thru--Base Connections —This service connection kit consists of a 1 / 2 --inchelectrical bulkhead connector and a 1 1 / 2 --inch electricalbulkhead connector, all factory--installed to the basepancover plate. Remove the cover plate from the shippingbracket and attach to basepan with 8 screws provided. The1 / 2 --inch bulkhead connector enables the low--voltagecontrol wires to pass through the basepan. The 1 1 / 2 --inchelectrical bulkhead connector allows the high--voltagepower wires to pass through the basepan. See Fig. 33.Check tightness of connector lock nuts before connectingelectrical conduits.Field--supplied and field--installed liquidtight conduitconnectors and conduit may be attached to the connectorson the basepan. Pull correctly rated high voltage and lowvoltage wires through appropriate conduits. Connect thepower conduit to the internal disconnect (if unit is soequipped) or to the external disconnect (through unit sidepanel). Remove one of the two knockouts located on thebottom left side of the unit control box. Use this hole forthe control conduit.LOW VOLTAGECONDUITCONNECTORHIGH VOLTAGECONDUITCONNECTORC10017Fig. 33 -- Thru--Base Connection FittingsUnits Without Thru--Base Connections —1. Install power wiring conduit through side panel open-ings. Install conduit between disconnect and controlbox.2. Install power lines to terminal connections as shownin Fig. 25.Field Control Wiring —The 50TCQD unit requires an external temperaturecontrol device. This device can be a thermostat(field--supplied) or a PremierLinkt controller (availableas a factory--installed option or as a field--installedaccessory, for use on a Carrier Comfort NetworkR or as astand alone control) or the RTU Open controller forBuilding Management Systems using non--CCN protocols(RTU Open controller is available as a factory--installedoption only).Thermostat —Install a Carrier--approved accessory 2 stageCooling/Heating thermostat according to installationinstructions included with the accessory. The 50TCQmodels do not require a thermostat with an O function tocontrol the reversing valve operation. If using anelectronic thermostat, configure it for “non--heat pump”operation. Locate the thermostat accessory on a solid wallin the conditioned space to sense average temperature inaccordance with the thermostat installation instructions.If the thermostat contains a logic circuit requiring 24--vpower, use a thermostat cable or equivalent single leads ofdifferent colors with minimum of seven leads. If thethermostat does not require a 24--v source (no “C”connection required), use a thermostat cable or equivalentwith minimum of six leads. Check the thermostatinstallation instructions for additional features whichmight require additional conductors in the cable.