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Benchmark 750-3000 Boiler Operation, Service, Maintenance Guide - KOREA
SECTION 2: OPERATION
Page
14
of
144
AERCO International, Inc.
•
100 Oritani Dr.
•
Blauvelt, NY 10913
OMM-0128_0B
07/17/2017
Ph.: 800-526-0288
TABLE 2-1: Controls, Indicators, and Displays (ref. Figure 2-1)
ITEM
CONTROL, INDICATOR
or DISPLAY
FUNCTION
10
MENU KEYPAD
Six (6) keys which provide the following functions for the C-More Controller menus:
MENU
Steps through the main menu categories shown in Figure 2-2. 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 2-2), 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 2-2), 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. Manual operation is for service only.
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%