AERCO BMK 2.0 LN October 2012 - Manual (Page 36)

Chapter 3
Benchmark 2.0LN Low NOx Boiler
GF-123
Operation Installation, Operation and Maintenance Manual OMM-0046_0F
Page 36 of 172 AERCO International Inc.● 100 Oritani Dr. ● Blauvelt, NY 10913. ● Ph: 800-526-0288 PR1 10/17/12
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%
3.3 CONTROL PANEL MENUS
The Control Panel incorporates an extensive menu structure which permits the operator to set
up, and configure the unit. The menu structure consists of five major menu categories which are
applicable to this manual. These categories are shown in Figure 3-2. Each of the menus
shown, contain options which permit operating parameters to be viewed or changed. The
menus are protected by a password levels to prevent unauthorized use.
Prior to entering the correct password, the options contained in the Operation, 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.