Bryant 551K 04N Series Service And Maintenance Instructions page 39

• Press the ▼ (Down arrow) button to move to the next
menu.
• Press the (Enter) button to display the first item in the
currently displayed menu.
• Press the (Menu Up/Exit) button to exit a menu's item
and return to the list of menus.
MENU UP
SCROLL
(EXIT)
UP/DOWN
BUTTON
BUTTONS
Fig. 68 — W7220 Controller Navigation Buttons
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.
NOTE: When values are displayed, pressing and holding the ▲or
▼ button causes the display to automatically increment or
decrement.
7.
8.
9.
Menu Structure
Table 12 illustrates the complete hierarchy of menus and
parameters for the EconoMi$er
The Menus in display order are:
•
•
2 LINE
LCD
•
•
•
•
NOTE: Some parameters in the menus use the letters MA or
MAT, indicating a mixed air temperature sensor location before
SELECT
(ENTER)
the cooling coil. This unit application has the control sensor locat-
BUTTON
ed after the cooling coil, in the fan section, where it is designated
as (Cooling) Supply Air Temperature or SAT sensor.
Setup and Configuration
Before 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 is
easy to use. Press the ▲ and ▼ arrow buttons to move forward
and backward through the menus and press the button to select
and confirm setup item changes.
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.
39
Press the (Enter) button to accept the displayed value
and store it in nonvolatile RAM. "CHANGE STORED"
displays.
Press the (Enter) button to return to the current menu
parameter.
Press the (Menu Up/Exit) button to return to the
previous menu.
STATUS
SETPOINTS
SYSTEM SETUP
ADVANCED SETUP
CHECKOUT
ALARMS
IMPORTANT: During setup, the economizer module is
live at all times.
X system.
®