AERCO KC1000 Low NOx Water Heater July 2011 - Manual (Page 21)

CONTROL PANEL OPERATING PROCEDURES
3-3
Table 3-1. Operating Controls, Indicators and Displays - Continued
ITEM
NO.
CONTROL, INDICATOR
OR DISPLAY
FUNCTION
10
(Cont.)
▲ (Up) Arrow When in one of the main menu categories (Figure 3-2),
pressing this key will select the displayed menu category. If
the CHANGE key was pressed and the menu item is flashing,
pressing the ▲ arrow key will increment the selected setting.
▼ (Down) Arrow When in one of the main menu categories (Figure 3-2),
pressing this key will select the displayed menu category. If
the CHANGE key was pressed and the menu item is flashing,
pressing the ▼ (Down) arrow key will increment the selected
setting.
CHANGE Permits a setting to be changed (edited). When the
CHANGE key is pressed, the displayed menu item will begin
to flash. Pressing the ▲ or ▼ arrow key when the item is
flashing will increment or decrement the displayed setting.
ENTER Saves the modified menu information in memory. The
display will stop flashing.
11 AUTO/MAN Switch This switch toggles the water heater between the Automatic
and Manual modes of operation. When in the Manual ( MAN)
mode, the front panel controls are enabled and the MANUAL
status LED lights.
When in the Automatic ( AUTO) mode, the MANUAL status
LED will be off and the front panel controls disabled.
12 VALVE POSITION
Bargraph
20-segment red LED bargraph continuously shows the
Air/Fuel Valve Position in 5% increments from 0 to 100%
3.3. CONTROL PANEL MENUS
The Control Panel incorporates an extensive
menu structure to permit the operator to set up
and configure the unit. The menu structure
consists of the four major menu categories
shown in Figure 3-2. Each of these menus
contains options to permit operating parameters
to be viewed or changed. The menus are
password-protected to prevent unauthorized
use.
Prior to entering the correct password, the
options contained in the Operating, Setup,
Configuration and Tuning Menu categories can
be viewed. However, with the exception of
Internal Setpoint Temperature (Configuration
Menu), none of the viewable menu options can
be changed.
Once the valid password (159) is entered, the
options listed in the Setup, Configuration and
Tuning menus can be viewed and changed, if
desired.
3.3.1. Menu Processing Procedure
Accessing each menu and option is accom-
plished using the Menu Keys shown in
Figure 3-1. Therefore, it is imperative that you
be thoroughly familiar with the following basic
steps before attempting to perform specific
menu procedures.
1. The Control Panel will normally be in the
Operating Menu and the VFD will display the
current unit status. Pressing the ▲ or ▼
arrow key will display the other available data
items in the Operating Menu.
2. Press the MENU key. The display will show
the Setup Menu which is the next menu
category shown in Figure 3-2. This menu
contains the Password option which must be
entered if other menu options will be
changed.
3. Continue pressing the MENU key until the
desired menu is displayed.