Carrier 50TCQD14 Installation Instructions Manual

Also see for 50TCQD: Installation instructions

Contents

29DIPSwitchLabelDIPSwitches(3)S-Bus2 Pin SideConnectorS-BusTerminals(1 and 2)C14157Fig. 44 -- S--Bus Sensor DIP SwitchesTable 9 – Enthalpy Control Sensor Wiring Terminations*Terminal Type DescriptionNbr Label1 S--- BUS S--- BUS S--- Bus Communications(Enthalpy Control Sensor Bus)2 S--- BUS S--- BUS S--- Bus Communications(Enthalpy Control Sensor Bus)* Terminals are polarity insensitive.Table 10 – Enthalpy Control Sensor DIP Switch SettingsUse DIP Switch Positions for Switches 1, 2, and 31 2 3DA * OFF ON OFFRA [ ON OFF OFFOA ** OFF OFF OFF* DA = Discharge Air[ RA = Return Air** OA = Outside AirNOTE: When a S--Bus sensor is connected to an existingnetwork, it will take 60 minutes for the network torecognize and auto--configure itself to use the new sensor.During the 60 minute setup period, no alarms for sensorfailures (except SAT) will be issued and no economizingfunction will be available.CO 2 Sensor Wiring —When using a CO2 sensor the black and brown commonwires are internally connected and only one is connectedto “IAQ COM” on the W7220. Use the power from theW7220 to power the CO2 sensor OR make sure the groundfor the power supplies are common. See Fig. 45 for CO2sensor wiring.CO2 SENSOR24VANALOGOUTL1(HOT)L2REDBLACKYELLOWBROWNORANGEGREEN+–POWER SUPPLY. PROVIDE DISCONNECTMEANS AND OVERLOAD PROTECTIONAS REQUIRED.11C14158Fig. 45 -- Wiring for CO 2 SensorInterface OverviewThis section describes how to use the economizer’s userinterface for:S Keypad and menu navigationS Settings and parameter changesS Menu structure and selectionUser Interface —The user interface consists of a 2--line LCD display and a4--button keypad on the front of the economizer controller.2 LINELCDMENU UP(EXIT)BUTTONSCROLLUP/DOWNBUTTONSSELECT(ENTER)BUTTONC14206Fig. 46 -- W7220 ControllerKeypad —The four navigation buttons (see Fig. 46) are used to scrollthrough the menus and menu items, select menu items,and to change parameter and configuration settings.