Carrier WeatherMaker 50TCQ07 Installation Instructions Manual

Also see for WeatherMaker 50TCQ*07: Product data

26Fig. 44 — CO 2 Sensor WiringINTERFACE OVERVIEWThis section describes how to use the EconoMi$er ® user inter-face for:• Keypad and menu navigation• Settings and parameter changes• Menu structure and selectionUser InterfaceThe user interface consists of a 2-line LCD display and a 4-buttonkeypad on the front of the economizer controller.KeypadUse the four navigation buttons (see Fig. 45) to scroll throughthe menus and menu items, select menu items, and to changeparameter and configuration settings.To use the keypad when working with menus:• Press the ▲ (Up arrow) button to move to the previousmenu.• Press the ▼ (Down arrow) button to move to the nextmenu.• Press the (Enter) button to display the first item in thecurrently displayed menu.• Press the (Menu Up/Exit) button to exit a menu’s itemand return to the list of menus.Fig. 45 — W7220 Controller Navigation ButtonsTo use the keypad when working with Setpoints, System andAdvanced Settings, Checkout tests and Alarms:1. Navigate to the desired menu.2. Press the (Enter) button to display the first item in thecurrently displayed menu.3. Use the ▲ and ▼ buttons to scroll to the desiredparameter.4. Press the (Enter) button to display the value of thecurrently displayed item.5. Press the ▲ button to increase (change) the displayedparameter value.6. Press the ▼ button to decrease (change) the displayedparameter value.NOTE: When values are displayed, pressing and holding the▲ or ▼ button causes the display to automatically increment ordecrement.1. Press the (Enter) button to accept the displayed valueand store it in nonvolatile RAM. “CHANGE STORED”displays.2. Press the (Enter) button to return to the current menuparameter.3. Press the (Menu Up/Exit) button to return to the previ-ous menu.Menu StructureTable 13 illustrates the complete hierarchy of menus and parame-ters for the EconoMi$er® X system.The Menus in display order are:• STATUS• SETPOINTS• SYSTEM SETUP• ADVANCED SETUP• CHECKOUT• ALARMSNOTE: Some parameters in the menus use the letters MA orMAT, indicating a mixed air temperature sensor location beforethe cooling coil. This unit application has the control sensor locat-ed after the cooling coil, in the fan section, where it is designatedas (Cooling) Supply Air Temperature or SAT sensor.SETUP AND CONFIGURATIONBefore being placed into service, the W7220 Economizer mod-ule must be set up and configured for the installed system.The setup process uses a hierarchical menu structure that iseasy to use. Press the ▲ and ▼ arrow buttons to move forwardand backward through the menus and press the button to selectand confirm setup item changes.Time-Out and ScreensaverWhen no buttons have been pressed for 10 minutes, the LCDdisplays a screen saver, which cycles through the Status items.Each Status items displays in turn and cycles to the next itemafter 5 seconds.CO 2 SENSOR24VANALOGOUTL1(HOT)L2REDBLACKYELLOWBROWNORANGEGREEN+–POWER SUPPLY. PROVIDE DISCONNECTMEANS AND OVERLOAD PROTECTIONAS REQUIRED.11IMPORTANT: During setup, the economizer module islive at all times.