AERCO BMK 1.5 LN July 2011 - Manual (Page 32)

CHAPTER 3: CONTROL PANEL OPERATION
Page 32 of 152 PR2: 05/09/12
Benchmark 1.5LN Low NOx Boiler
Operation and Maintenance Manual
OMM-0041_0D
GF-120
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%