Honeywell AQ25A Series Technical Reference Booklet page 83

• If the active menu item requires you to define a value (e.g.,
a setpoint), use the – or + button to decrease or increase
the value until the desired value is displayed. The selection
will be saved when the indicator arrow is scrolled up or
down.
NOTES:
1. When setting times for the setback schedule, you
must use the – or + buttons to change the time.
2. The OK button, when pressed, defaults the time
setting to "--:--" (midnight).
• If the active menu item leads to a further sub-menu,
pressing the OK button displays the sub-menu options on
the LCD. Scroll through this sub-menu to position the
indicator arrow (←)beside the desired menu item to input or
modify. Choose one of the options provided or input the
desired value for the menu item. When satisfied, scroll to
another item and your selection will be saved.
• To define or modify another item within the same menu,
scroll the up and down buttons (
arrow (←) is beside the desired option. Use the – or +
buttons to set the value for that item.
• To move back (up) one level within a menu, press the Menu
button.
• To return to the Home Page display, press the Home button.
NOTE: The AQ251 automatically returns to the Home Page
display after 60 minutes of inactivity on the keypad.
HOME PAGE DISPLAY
The Home Page is the default view displayed on the AQ251
Control Panel's LCD screen.
There are two Home Page views - Simple and Detail.
• Simple view shows 3 lines of text and is a brief description
of the system operation: Day, Time of Day, Current Program
and Outdoor temperature.
• Detail view includes the same 3 lines, plus 8 lines of
additional information, including Boiler Supply and Return
temperatures, Boiler Supply Target temperature, Zone
Demand and Zone Count, and DHW temperature (if
configured for DHW sensor use). Detail view is the factory
default setting for the Home Page.
The choice of the Simple or Detail Home Page view is made
from the USER MENU > PREFERENCES/TIME>HOMEPAGE
menu option.
The Home Page, together with the System Status information
(a selection from the User Menu), provides a service contractor
extensive diagnostic information for troubleshooting the
installation.
NOTES: Home Page display upon restart after a power failure
of more than four hours:
1. Upon restarting the AQ251 following a power dis-
ruption of greater than 4 hours, the message PLS
SET DAY/TIME OF DAY displays on the top line of
the Home Page screen. The message disappears
after the DAY and TIME OF DAY are updated.
— If the power failure parameter is set to Back-
light (USER MENU > PREFERENCES), the
LCD backlight flashes repeatedly, along with
the message.
2. The AQ251 starts up with its clock settings as:
DAY = MONDAY, TIME OF DAY = 12:00 midnight,
and program = OCCupied.
or v) until the indicator
^
17
AQ251 SERIES BOILER RESET CONTROL PANELS
3. Until the DAY and TIME OF DAY settings are
adjusted, the control remains in permanent
setpoint (comfort) mode.
4. When the DAY and TIME OF DAY settings are
adjusted, the AQ251 follows the four programs of
WAKE, LEAVE, RETRN (return), and SLEEP.
Refer to "Home Page" on page 23 in the "Appendix" for
illustrations of the Simple and Detail displays.
Programming the AQ251
Program the AQ251 by using the keypad and LCD display to
select parameters from the User and Installer menus. Refer to
to Fig. 22 on page 16 for an illustration of the LCD screen and
keypad.
NOTE: The figures in "Menu Structure" on page 38 provide a
graphical layout of the AQ251's User and Installer
menus.
When a new AQ2000 component is connected on the
AQUATROL network, it will be seamlessly integrated in the
system after a few seconds. If one or more components are
disconnected or stop providing data to the network, a message
will appear on the System Status display until the fault is
corrected.
User Menu
The User Menu is intended for use by the building owner to
choose the LCD display preferences, Zone Settings (including
setpoint temperatures and setback times for each zone), and
temperatures for the WAKE, LEAVE, RETRN (return), and
SLEEP programs.
The Home Page and User Menu allow the building owner to:
• View the status of the system.
• Set up preferences for how the system information is
displayed.
• Set the setpoint temperatures for each zone.
• Program times of the day when the system will set back the
temperatures for the WAKE, LEAVE, RETURN, and SLEEP
programs.
NOTE: If there are any problems with the system's operation,
the AQ251 displays error codes on the System Status
Page display of the LCD panel. For details on these,
refer to "Troubleshooting" on page 20.
TO ACCESS THE USER MENU:
Press the Menu button on the keypad at any time to access the
User Menu.
Refer to Table 5 on page 24 in the "Appendix" for all of the
User Menu options for the AQ251 Control Panel, the factory
default values and permissible ranges for each option, and a
brief description of each setting.
Installer Menu
The Installer Menu is used to:
— Set up and modify the Equipment Settings (for boiler
operation, DHW management, zoning, auxiliary input/output
operation, and options such as pump/valve exercise, freeze
protection, and Save/Restore settings)
— Access the Test and Purge functions to facilitate quick and
simple commissioning of the hydronic system.
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