Daikin WGZ030DA, Installation, Operation And Maintenance Manual

Page: 72 / 112

IOM 1322 • WATER-COOLED SCROLL COMPRESSOR 72 www.DaikinApplied.com
Unit Controller Operation
MENU Key
The MENU key is used to switch between the shortcut method
(known as the MENU mode and as shown in Figure 8) and
scrolling method (known as the SCROLL mode). The MENU
mode is the shortcut to specific groups of menus used for
checking ALARMS, for VIEWING information, or to SET
setpoint values. The SCROLL mode allows the user to move
about the matrix (from one menu to another, one at a time) by
using the four ARROW keys. A typical menu screen is shown
in the following figure. Pressing the MENU key from any menu
screen will automatically return you to the MENU mode.
Figure 39: Display in the Shortcut (SCROLL) Mode and
Keypad Layout
ENTER Key
Pressing the ENTER key changes the function of the ARROW
keys to the editing function as shown below:
LEFT: Default, changes a value to the factory-set default
value.
RIGHT: Cancel, cancels any change made to a value and
returns to the original setting.
UP: Increment, increases the value of the setting
DOWN: Decrement decreases the value of a setting.
These four edit functions are indicated by one-character
abbreviation on the right side of the display (this mode is
entered by pressing the ENTER key).
Most menus containing setpoint values have several different
setpoints shown on one menu. When in a setpoint menu, the
ENTER key is used to proceed from the top line to the second
line and on downward. The cursor will blink at the entry point
for making a change. The ARROW keys (now in the edit mode)
are used to change the setpoint as described above. When
the change has been made, press the ENTER key to enter it.
Nothing is changed until the ENTER key is pressed.
For example, to change the chilled water setpoint:
1. Press MENU key to go to the MENU mode.
2.
Press SET (the UP Key) to go to the setpoint menus.
3. Press UNIT SPs (the Right key) to go to setpoints
associated with unit operation.
4. Press the DOWN key to scroll down through the setpoint
menus to the third menu which contains Evap LWT=XX.
X°F.
5. Press the ENTER key to move the cursor down from the
top line to the second line in order to makethe change.
6. Use the ARROW keys (now in the edit mode as shown
above) to change the setting.
7. When the desired value is achieved, press ENTER to
enter it and also move the cursor down.
At this point, the following actions can be taken:
1. Change another setpoint in this menu by scrolling to it
with the ENTER key.
2. Using the ENTER key, scroll to the first line in the menu.
From there the ARROW keys can be used to scroll to
different menus.
Menu Screens
Various menus are shown in the controller display. Each menu
screen shows specific information, in some cases menus are
only to view status of the unit, in some cases for checking
alarms, and in some cases they are used to set setpoint values
that can be changed.
The menus are arranged in a matrix of screens across a top
horizontal row. Some of these top-level screens have sub-
screens located under them. The content of each screen and
its location in the matrix are shown in Figure 10. A description
of each menu begins on page 53.
The arrow keys on the controller are used to navigate through
the menus. The keys are also used to change numerical
setpoint values contained in certain menus.
Figure 40: Menu Matrix
Selection can be made within the matrix by using the LEFT/
RIGHT keys to move between columns and the UP/DOWN
keys to move between rows.
Unit Controller Operation