Watts AERCO Benchmark OMM-0121 Operation And Maintenance Manual page 16

Benchmark 750-3000 Boiler Operation & Maintenance Manual
SECTION 2: OPERATION
TABLE 2-1: Controls, Indicators, And Displays (ref. Figure 2-1)
CONTROL, INDICATOR
ITEM
or DISPLAY
Six (6) keys which provide the following functions for the C-More Controller menus:
Steps through the main menu categories shown in Figure 2-2. The menu
MENU
categories wrap around in the order shown.
Allows you to go back to the previous menu level without changing any
information.
BACK
default status display in the VFD. Also, this key allows you to go back to
the top of a main menu category.
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
(UP)
10
pressed and the menu item is flashing, pressing the ▲ arrow key will
Arrow
increment the selected setting.
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
(DOWN)
and the menu item is flashing, pressing the ▼ arrow key will decrement the
Arrow
selected setting.
Permits a setting to be changed (edited).
pressed, the displayed menu item will begin to flash. Pressing the ▲ or ▼
CHANGE
arrow key when the item is flashing will increment or decrement the
displayed setting.
Saves the modified menu settings in memory.
ENTER
flashing.
11
AUTO/MAN switch
12 VALVE POSITION
Bargraph
OMM-0122_D • GF-206 • 5/9/2019
MENU KEYPAD
Continuously pressing this key will bring you back to the
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.
20 segment red LED bargraph continuously shows the Air/Fuel
Valve position in 5% increments from 0 to 100%
Technical Support • (800) 526-0288 • Mon-Fri, 8 am - 5 pm EST
FUNCTION
When the CHANGE key is
The display will stop
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