User Interface; Keypad; Menu Structure - Carrier WeatherExpert 50LC Installation Instructions Manual

The W7220 control also includes a new capability that
will adjust the damper control points during DCV or
minimum ventilation operation as the indoor fan speed is
changed. This control function ensures that required space
ventilation airflow quantities are maintained during
reduced fan speed operation.
Additional control capabilities
detection of new sensors and detection of sensor failure or
loss of communication.
The W7220 control module includes an integral user
interface with keypad and LCD display that permits direct
input of setpoint values and configurations and display of
status and alarms.
The W7220 controller is located in the RTU base unit's
Control Box. See the Installation Instructions for this base
unit for the location of the Control Box access panel.
User Interface —
The user interface consists of a 2- - line LCD display and a
4- - button keypad on the front of the economizer controller.
MENU UP
SCROLL
(EXIT)
UP/DOWN
BUTTON
BUTTONS
Fig. 44 - - W7220 Controller

Keypad

The four navigation buttons (see Fig. 44) are used to scroll
through the menus and menu items, select menu items,
and to change parameter and configuration settings.
Using the Keypad with Menus
To use the keypad when working with menus:
S Press the (Up arrow) button to move to the previous
menu.
S Press the (Down arrow) button to move to the next
menu.
S Press the (Enter) button to display the first item in
the currently displayed menu.
S Press the (Menu Up/Exit) button to exit a menu's
item and return to the list of menus.
include automatic
2 LINE
LCD
SELECT
(ENTER)
BUTTON
C14206
29
The Menus in display order are:
S STATUS
S SETPOINTS
S SYSTEM SETUP
S ADVANCED SETUP
S CHECKOUT
S ALARMS
Using the Keypad with Settings and Parameters
To use the keypad when working with Setpoints, System
and Advanced Settings, Checkout tests and Alarms:
1. Navigate to the desired menu.
2. Press the (Enter) button to display the first item in
the currently displayed menu.
3. Use the and buttons to scroll to the desired pa-
rameter.
4. Press the (Enter) button to display the value of the
currently displayed item.
5. Press the button to increase (change) the displayed
parameter value.
6. Press the button to decrease (change) the displayed
parameter value.
NOTE: When values are displayed, pressing and
holding the
display to automatically increment.
7. Press the (Enter) button to accept the displayed
value and store it in nonvolatile RAM.
8. "CHANGE STORED" displays.
9. Press the (Enter) button to return to the current
menu parameter.
10. Press the (Menu Up/Exit) button to return to the
previous menu.

Menu Structure

IMPORTANT: Table 5 illustrates the complete hierarchy.
Your menu parameters may be different depending on
your configuration. For example if you do not have a
DCV (CO ) sensor, then none of the DCV parameters
2
appear.
The menu hierarchy has been modified to reflect controller
configuration for 2- - speed indoor fan application in the
Staged Air Volume option.
NOTE: Some parameters in the menus use the letters MA
or MAT, indicating a mixed air temperature sensor
location before the cooling coil. This unit application has
the control sensor located after the cooling coil, in the fan
section, where it is designated as (Cooling) Supply Air
Temperature or SAT sensor.
or button causes the