Carrier 50HCQ07 Installation Instructions Manual

35To 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 desired parame-ter.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 or decre-ment.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 10 illustrates the complete hierarchy of menus and pa-rameters 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 (Enter) but-ton to select and 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.IMPORTANT: Table 10 illustrates the complete hierar-chy. Your menu parameters may be different dependingon your configuration.For example if you do not have a DCV (CO 2 ) sensor,then none of the DCV parameters appear and only MINPOS will display. If you have a CO 2 sensor, the DCVMIN and DCV MAX will appear.IMPORTANT: During setup, the economizer module islive at all times.