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8403-066 ECU Series Controller:
Lead/Lag Unit Operation
SUPPLEMENTAL INSTRUCTIONS
Bard Manufacturing Company, Inc.
Bryan, Ohio 43506
www.bardhvac.com
Manual: 7960-780
Supersedes:
NEW
Date: 9-2-16
FIGURE 1
ECU Series Controller Buttons and Home, Overide and Configuration Screens
*
Software version R1.3.5.1 or newer. Earlier versions
allowed two units to rotate.
Lead/Lag Overview
The Bard 8403-066 ECU Series Controller has an
additional lead/lag feature that allows up to four units*
to operate in a unit rotational mode. Once programmed,
the ECU Series controller operation will rotate cooling
and heating setpoints for up to four units every 24
hours. It is important to verify all ECU Series controllers
used are set to the correct time and date. Please refer
to the user manual to verify the time and date setting
for each ECU Series controller.
Navigate the menus and change settings by pressing a
combination of the four arrow buttons and the ENTER
button.
•
ENTER
button to select and/or exit value editing
•
UP
or
DOWN
button to move among entries
•
RIGHT
or
LEFT
button to move among value fields
•
LEFT
button to return to the home screen
Accessing the Lead/Lag Setup Menu
To access the lead/lag setup menu:
1. Press
RIGHT button to access Main Menu screen.
2. Press
DOWN button to scroll to ADVANCED. Press
ENTER button.
3. In the ADVANCED menu screen, press DOWN
button to scroll to LEAD/LAG. Press ENTER button.
4. Controller will ask for Admin Level Password. Use
UP, DOWN and RIGHT buttons to enter BARD or
1914. Press ENTER button.
Lead/Lag Menu Options
Once the LEAD/LAG menu is accessed, the following
settings are available:
• The ability to enable the lead/lag feature.
• Identify the unit # the ECU Series controller will be
connected to.
