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Exporting 7 Day Logs
See latest version of Supplemental Instructions manual
7960-826 for information on exporting 7 day I/O logs.
Unit Address and Zone
Each unit must have a unique address for the system
to operate correctly with the LC supervisory controller
(Ex: 1, 2, 3, ...14 depending on the number of units).
The unit only needs the address to be changed for the
communication to work properly.
When paired with a supervisory controller that uses
zones to control groups of wall units, each 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 unit address and/or 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 Unit Address (see
Figure 15).
6. Press UP or DOWN keys to change the address to a
value between 1 and 14.
7. Press ENTER key to scroll to Zone.
8. Press UP or DOWN keys to change to the desired
value (1, 2 or 3).
9. Press ENTER key to save value.
FIGURE 15
Changing Zone
NOTE: Each unit must have a unique address for the
communication to work properly. Unit addresses
can only be used once per LC6000 regardless
of number of zones. Bard also recommends
physically labeling each unit for ease in
identification.
Manual 2100-749
Page
14 of 68
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 return opening for air path/circuit 1 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 C3-1.
6. Verify the measurement displayed on screen is
accurate (see Figure 16).
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 16
Adjusting Return Air Temperature Sensor
Return Air Temperature Sensor 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.
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Table of Contents
Troubleshooting
