CHAPTER 3: CONTROL PANEL OPERATION
Page
30
of
158
PR2: 04/22/13
Benchmark 2.0LN Dual-Fuel Low NOx Boiler
Operation and Maintenance Manual
OMM-0052_0E
GF-127
AERCO International, Inc.
•
100 Oritani Dr.
•
Blauvelt, NY 10913
•
Ph: 800-526-0288
Table 3-1 Operating Controls, Indicators and Displays (Continued)
ITEM
NO.
CONTROL,
INDICATOR OR
DISPLAY
FUNCTION
10
MENU Keypad
Consists of 6 keys which provide the following functions for the
Control Panel Menus:
MENU
Steps through the main menu categories shown in Figure 3-2.
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 VFD. 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 (Figure 3-2), pressing
the
▲ arrow 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
▼
arrow key will decrement 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 settings in memory. The display will
stop flashing.
11
AUTO/MAN
Switch
This switch toggles the boiler 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%
