Manual 2100-670B
Page
9 of 33
Unit On/Off
The wall unit can be turned on and off from the TEC-
EYE. Turning the unit off with the following instructions
will disable heating and cooling operation but may not
disable the blower. The blower may continue to run
if the unit or the LV1000 have the continuous blower
option enabled.
NOTE:
Blower will run if the unit is in stand alone
mode.
To turn the unit on or off:
1. Press MENU key to go to the Main Menu screen.
2. Press UP or DOWN keys and ENTER key to enter
USER password 2000.
3. Press UP or DOWN keys to scroll to
On/Off
; press
ENTER key.
4. Press UP or DOWN keys to change value from On
to Off or from Off to On.
5. Press ESCAPE key several times to return to Main
Menu screen.
The wall unit may also be turned off by certain alarms
such as the smoke alarm input on the wall unit board
or the return air temperature sensor failure when not
connected to the LV1000.
Alarm Adjustment
Acknowledging/Clearing Alarms
Alarm conditions activate a red LED indicator that
backlights the ALARM function key. As an option, an
alarm condition may also be enunciated by an audible
alarm signal. An alarm is acknowledged by pressing the
ALARM key. This calls up alarm display screen(s) that
provide a text message detailing the alarm condition(s).
After an alarm condition is corrected, the alarm can be
cleared by pressing the ALARM key for 3 seconds.
To clear all alarms, navigate to the end of the alarm list
to the screen shown in Figure 5.
OPERATION
FIGURE 5
Clearing All Alarms
Stand Alone Mode
With the AC breakers turned on, each FUSION-TEC
wall-mount unit has the capability to run without the
LV1000 controller attached—this feature is called
stand alone or orphan mode. This keeps the shelter
between 60°F and 79°F (factory default settings) by
the use of the factory-installed return air sensor in
each wall-mount unit. In stand alone mode, the wall
unit uses a continuous blower setting to circulate room
air into the return air inlet and uses the return air
temperature sensor to control room temperature.
The wall-mount unit can be turned on and off with
the TEC-EYE hand-held diagnostic tool. When ON is
chosen, the wall unit will heat or cool. The blower will
continue to run when OFF is chosen. If the wall unit is
turned OFF by the TEC-EYE while in stand alone mode
and power is interrupted, when repowered the blower
will not run until the wall unit is turned back ON by the
TEC-EYE (see
Unit On/Off
).
To change default setpoints, refer to
Setpoints
on page
7.
During installation, the ability to run in stand alone
mode allows deactivation of one of the existing, older
wall-mount units, while keeping the shelter cool
with the other unit still operating. Once the first of
the Bard FUSION-TEC wall-mount units is installed,
orphan mode can be enabled early in the installation—
keeping the climate inside the shelter stable and
the installers comfortable while the remainder of the
older equipment is removed and the remaining Bard
FUSION-TEC wall-mount units and LV1000 controller
are installed.
Additionally, should any or all of the FUSION-TEC
wall-mount units lose communication with the LV1000
controller (such as during maintenance), they will
continue to serve the shelter’s needs until a repair can
be made.
Temperature/Humidity Control
Temperature/Humidity 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 stand alone 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 LV 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.
