AERCO BMS II BOILER - Manual (Page 34)

OPERATION
3-2
Table 3-1. BMS II Front Panel Controls and Displays
ITEM
NO. CONTROL, INDICATOR
OR DISPLAY
FUNCTION
1 VFD Display The Vacuum Fluorescent Display (VFD) display consists of 2
lines each capable of displaying up to 16 alphanumeric
characters. The information displayed includes:
• Startup Messages
• Alarm Messages
• Operating Status Messages
• Menu Selections
2 FAULT Indicator Red FAULT LED indicator lights when a BMS II alarm
condition occurs. An alarm message will also appear in the
VFD display.
3 CLEAR Key
Turns off the FAULT indicator and relay if FAULT ALRM
CLEAR is set to Manual and the fault is still active or no
longer active. If FAULT ALRM CLEAR is set to Automatic
and the fault is still active, this will also turn off the fault relay
and indicator. In both cases the alarm message will remain
until the alarm is no longer valid.
4 MENU Keypad Consists of 6 keys which provide the following functions for
the BMS II menus:
MENU Steps through the main menu categories shown in Figure 2-1.
The Menu categories wrap around in the order shown.
BACK Allows you to go back to the previous menu level without
changing any information. Continuously pressing this key will
bring you back to the default status display in the Operating
Menu. Also, this key allows you to go back to the top of a
main menu category.
▲ (Up) Arrow
When in one of the main menu categories, pressing this key
will move you forward through the displayed menu category.
If the CHANGE key was pressed and the menu item is
flashing, press the
▲ arrow key increment the setting.
▼ (Down) Arrow
When in one of the main menu categories, 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 decrement the selected setting.
CHANGE Permits a setting to be changed (edited). A valid password
must be entered before changing most menu items. When
the CHANGE key is pressed, the displayed menu item will
alternate in color with the background (reverse video).
Pressing the
▲ or ▼ arrow key when this occurs will
increment or decrement the displayed setting.
ENTER Saves the modified menu information in memory. The
display will return to the normal state.
5 ON/OFF Key Enables and disables BMS II operation.
6 ON Indicator Green ON LED lights when the BMS II is enabled.