Table of Contents
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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. 9 - - W7220 Controller
Keypad
The four navigation buttons (see Fig. 9) 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.
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
parameter.
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.
7. Press the
8. "CHANGE STORED" displays.
9. Press the
10. Press the
2 LINE
Menu Structure
LCD
Table 5, starting on page 13, illustrates the complete
hierarchy of menus and parameters for the EconoMi$er X
system.
The Menus in display order are:
SELECT
S STATUS
(ENTER)
BUTTON
S SETPOINTS
S SYSTEM SETUP
C14206
S ADVANCED SETUP
S CHECKOUT
S ALARMS
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
none of the DCV parameters appear and only MIN POS
will display. If you have a CO
DCV MAX will appear AND if you have 2 speed fan
DCV MIN (high and low speed) and DCV MAX (high
and low speed will appear).
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.
Before being placed into service, the W7220 Economizer
module must be setup and configured for the installed
system.
IMPORTANT: During setup, the Economizer module is
live at all times.
The setup process uses a hierarchical menu structure that
is easy to use. You press the
move forward and backward through the menus and press
the
Time- - out and Screensaver
When no buttons have been pressed for 10 minutes, the
LCD displays a screen saver, which cycles through the
Status items. Each Status items displays in turn and cycles
to the next item after 5 seconds.
12
NOTE: When values are displayed, pressing and
holding the
or
display to automatically increment.
(Enter) button to accept the displayed
value and store it in nonvolatile RAM.
(Enter) button to return to the current
menu parameter.
(Menu Up/Exit) button to return to the
previous menu.
2
SETUP AND CONFIGURATION
button to select and confirm setup item changes.
button causes the
) sensor, then
2
sensor, the DCV MIN and
and
arrow buttons to
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