Carrier 50TCA04-A07 Service And Maintenance Instructions

Also see for 50TCA04: Installation instructions

23C08199Fig. 33 -- PremierLink ControllerPREMIERLINKT CONTROLThe PremierLink controller (see Fig. 33) is compatiblewith Carrier Comfort Networkr (CCN) devices. Thiscontrol is designed to allow users the access and ability tochange factory--defined settings, thus expanding thefunction of the standard unit control board. CCN serviceaccess tools include System Pilot (TM), Touch Pilot (TM)and Service Tool. (Standard tier display tools Navigatortand Scrolling Marquee are not suitable for use with latestPremierLink controller (Version 2.x).)The PremierLink control is factory--mounted in the 50TCunit’s main control box to the left of the LCTB. Factorywiring is completed through harnesses connected to theLVTB. Field connections are made at a 16--pole terminalblock (TB1) located on the bottom shelf of the unitcontrol box in front of the PremierLink controller Thefactory--installed PremierLink control includes thesupply--air temperature (SAT) sensor. The outdoor airtemperature (OAT) sensor is included in theFIOP/accessory Economizer 2 package.Refer to Fig. 33 for PremierLink connection locations.NOTE: Refer to Form 33CS--58SI for completePremierLink configuration, operating sequences andtroubleshooting information. Have a copy of this manualavailable at unit start--up.The PremierLink controller requires the use of a Carrierelectronic thermostat or a CCN connection for timebroadcast to initiate its internal timeclock. This isnecessary for broadcast of time of day functions(occupied/unoccupied).NOTE: PremierLink controller is shipped in Sensormode. To be used with a thermostat, the PremierLinkcontroller must be configured to Thermostat mode. Referto PremierLink Configuration instructions for OperatingMode.Supply Air Temperature (SAT) Sensor — OnFIOP--equipped 50TC unit, the unit is supplied with asupply--air temperature (SAT) sensor (33ZCSENSAT).This sensor is a tubular probe type, approx 6--inches (12.7mm) in length. It is a nominal 10--k ohm thermistor. SeeTable 15 for temperature--resistance characteristic.The SAT is factory--wired. The SAT probe is wire--tied tothe supply--air opening (on the horizontal opening end) inits shipping position. Remove the sensor for installation.Re--position the sensor in the flange of the supply--airopening or in the supply air duct (as required by localcodes). Drill or punch a 1/2--in. hole in the flange or duct.Use two field--supplied, self--drilling screws to secure thesensor probe in a horizontal orientation. See Fig. 36.SUPPLY AIR RETURN AIRSUPPLY AIRTEMPERATURESENSORROOFCURBC08200Fig. 34 -- Typical Mounting Location for Supply AirTemperature (SAT) Sensor on Small Rooftop Units50TC