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AQUATROL ZONE SYNCHRONIZING BOILER RESET CONTROLS
3 69-1979—04
LCD Display Panel Layout
The LCD on the AQ251 Control Panel is used to:
— Monitor system status and performance.
— Select and/or modify control settings for the hydronic
system.
— Diagnose and troubleshoot system problems.
The layout of the display is logical and simple to navigate. The
information displays so that you can see at a glance the
system’s operating temperatures, as well as the status of the
system equipment, such as a call for heat, DHW pump ON,
Boiler T-T terminals energized, etc. Fig. 1 on page 2 illustrates
the layout and features of the LCD display panel and keypad.
LCD Display Navigation
This section describes how the keypad is used to navigate the
LCD display and menus.
• The LCD displays up to three lines of text at a time. For
menus with more than three lines, use the up and down
buttons (
^
or v) to scroll through the menu options.
• As the menu is scrolled up or down, the indicator arrow (←)
shows which menu item is active.
• If the active menu item is part of a list of predefined options
(e.g., Day of the Week) press the – or + button to scroll
through the available options until the preferred option is
displayed. The option is automatically saved when the
indicator arrow is scrolled away from the value being
edited.
• 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 + button 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 (
^
or v) until the indicator
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.
• Detail view includes the same 3 lines plus 10 lines of
additional information. Detail view is the factory default.
The choice of the Simple or Detail Home Page view is made
from the USER MENU > PREFERENCES/TIME menu option.
The Home Page display information for the Simple and Detail
views is illustrated in Fig. 2.
Fig. 2. Home Page displays (Simple and Detail).
M27749
WEDNESDAY 9:30A
PROGRAM: LEAVE RETRN SLEEP WAKE OCC UNOCC
OUTDOOR: -5
TARGET: 180 WWSD -
-
BOILER: 180
RETURN: 160
DHW: 100
ZONE COUNT: 31
WEDNESDAY 9:30A
PROGRAM: LEAVE
OUTDOOR: -5
Menu
Home
KEYPAD
HOME PAGE (SIMPLE)
HOME PAGE (DETAIL)
LCD DISPLAY