Exporting 7 Day Logs; Configuration File; Zone; Temperature Control - Bard MEGA-TEC W090A Service Instructions Manual

Exporting 7 Day Logs

See latest version of Supplemental Instructions manual
7960-826 for information on exporting 7 day I/O logs.

Configuration File

The controller will automatically save all of the
configured parameters to a file that can be accessed by
connecting a laptop to the controller with a micro USB
cable. This file can be used to copy the setting of one
board to another board.
The file is located in the main directory of the
controller and is labeled "MG_Config". Copy this file to
a location on the laptop and then disconnect from the
first board. Connect to the second board and copy the
file to the second board. Disconnect the laptop from
the second board and power cycle the controller. The
second board will now have the same settings as the
first board.

Zone

When paired with a supervisory controller that uses
zones to control groups of wall units, this unit uses the
zone setting to relay to the supervisory controller what
zone it is set to operate in. Up to three zones can be
established with up to 14 units in a single zone. (The
LC6000 supervisory controller can control up to a total
of 14 units.)
To change the zone:
1. Press MENU key to access the Main Menu screen.
2. Press UP or DOWN keys and ENTER key to enter
TECHNICIAN password 1313.
3. Press UP or DOWN keys to scroll to Sys Config;
press ENTER key.
4. Press UP or DOWN keys to scroll to Unit Setup A1
screen.
5. Press ENTER key to scroll to Zone (see Figure 12).
6. Press UP or DOWN keys to change to the desired
value (1, 2 or 3).
7. Press ENTER key to save value.
FIGURE 12
Changing Zone

Temperature Control

Temperature Control Components

Return Air Temperature Sensor

The unit is equipped with a return air temperature
sensor to monitor the space temperature when the unit
is in orphan mode. The return air sensor is located
in the upper part of the return opening in such a way
that it is exposed to the entering airstream. An alarm
signal will be sent to the LC controller if the return air
temperature sensor is disconnected. The temperature is
measured with a 10k ohm NTC thermistor.
This sensor can be verified and adjusted by:
1. Press MENU key to go to the Main Menu screen.
2. Press UP or DOWN keys and ENTER key to enter
TECHNICIAN password 1313.
3. Press UP or DOWN keys to scroll to I/O Config;
press ENTER key.
4. Press UP or DOWN keys to scroll to Analog Inputs;
press ENTER key.
5. Press UP or DOWN keys to scroll to Analog Ins 1/19.
6. Verify the measurement displayed on screen is
accurate (see Figure 13).
7. If the measurement needs to be adjusted, apply an
offset value by pressing ENTER to scroll to Offset.
8. Press UP or DOWN keys to adjust the offset.
9. The update will not take effect until the cursor is
moved out of the Offset parameter.
10. Once adjusted, press the ESCAPE key several
times to return to Main Menu screen.
FIGURE 13
Adjusting Return Air Temperature Sensor

Return Air Temperature Alarm

When the return air temperature sensor value is out of
range (-41.0 to 303.0°F), the controller will generate
a sensor failure alarm to indicate the sensor is not
working properly.
This alarm is fixed and cannot be adjusted.
Manual 2100-671C
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