Carrier 48HE003---006 Installation Instructions Manual

Contents

19C06131Fig. 22 --- Outdoor--Air Damper WithHood AttachedC06132Fig. 23 --- Outdoor--Air Damper Position Settingpremierlink™ controlThe PremierLink controller is compatible with Carrier ComfortNetworkR (CCN) devices. This control is designed to allowusers the access and ability to change factory--defined settings,thus expanding the function of the standard unit control board.Carrier’s diagnostic standard tier display tools such asNavigatort or Scrolling Marquee can be used with thePremierLink controller.The PremierLink controller (see Fig. 24 and 25) requires the useof a Carrier electronic thermostat or a CCN connection for timebroadcast to initiate its internal timeclock. This is necessary forbroadcast of time of day functions (occupied/unoccupied). Nosensors are supplied with the field--mounted PremierLink control.The factory--installed PremierLink control includes only thesupply--air temperature (SAT) sensor and the outdoor airtemperature (OAT) sensor as standard. An indoor air quality(CO2) sensor can be added as an option. Refer to Table 5 forsensor usage. Refer to Fig. 26 for PremierLink controller wiring.The PremierLink control may be mounted in the control panel oran area below the control panel.NOTE: PremierLink controller versions 1.3 and later are shippedin Sensor mode. If used with a thermostat, the PremierLinkcontroller must be configured to Thermostat mode.Install the Supply Air Temperature (SAT) SensorWhen the unit is supplied with a factory--mounted PremierLinkcontrol, the supply--air temperature (SAT) sensor(33ZCSENSAT) is factory--supplied and wired. The wiring isrouted from the PremierLink control over the control box,through a grommet, into the fan section, down along the backside of the fan, and along the fan deck over to the supply--airopening.The SAT probe is wire--tied to the supply--air opening (on thehorizontal opening end) in its shipping position. Remove thesensor for installation. Re--position the sensor in the flange of thesupply--air opening or in the supply air duct (as required by localcodes). Drill or punch a 1/2--in. hole in the flange or duct. Usetwo field--supplied, self--drilling screws to secure the sensor probein a horizontal orientation.NOTE: The sensor must be mounted in the discharge airstreamdownstream of the cooling coil and any heating devices. Be surethe probe tip does not come in contact with any of the unit or heatsurfaces.Outdoor Air Temperature Sensor (OAT)When the unit is supplied with a factory-mounted PremierLinkcontrol and economizer, the outdoor-air temperature sensor(OAT) is factory-supplied and wired.Install the Indoor Air Quality (CO 2) SensorMount the optional indoor air quality (CO 2) sensor according tomanufacturer specifications.A separate field-supplied transformer must be used to power theCO 2 sensor.Wire the CO 2 sensor to the COM and IAQI terminals of J5 on thePremierLink controller. Refer to the PremierLink Installation,Start-up, and Configuration Instructions for detailed wiring andconfiguration information.Enthalpy Sensors and ControlThe enthalpy control (HH57AC077) is supplied as afield-installed accessory to be used with the EconoMi$er2damper control option. The outdoor air enthalpy sensor is part ofthe enthalpy control. The separate field-installed accessory returnair enthalpy sensor (HH57AC078) is required for differentialenthalpy control.NOTE: The enthalpy control must be set to the “D” setting fordifferential enthalpy control to work properly.The enthalpy control receives the indoor and returnenthalpy from the outdoor and return air enthalpy sensors andprovides a dry contact switch input to the PremierLink controller.Locate the controller in place of an existing economizer controlleror near the actuator. The mounting plate may not be needed ifexisting bracket is used.A closed contact indicates that outside air is preferred to thereturn air. An open contact indicates that the economizer shouldremain at minimum position.Outdoor Air Enthalphy Sensor/Enthalpy Controller(HH57AC077)To wire the outdoor air enthalpy sensor, perform the following (SeeFig. 27 and 28):NOTE: The outdoor air sensor can be removed from the back ofthe enthalpy controller and mounted remotely.48HE,HJ