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The economizer may be disabled by the LC if the
system determines it needs to enter dehumidification
mode. More information about the dehumidification
sequence can be found on page 16 and in the latest
revision of LC6000 Service Instructions 2100-669.
In addition to dehum mode, the economizer may be
disabled for 5 minutes (adjustable) if the dust sensor
indicates the outdoor air may cause particulate buildup
in the air filters. After the time has expired and on a call
for cooling, the economizer will open again to sample
the air. The wall-mount unit will either return to normal
operation or remain locked out for another 5 minutes.
Emergency Cooling Mode
If the shelter temperature is above the high temperature
alarm setpoint on the LC, the unit will be commanded
into emergency cooling mode. In this mode, the
unit will operate the economizer regardless of the
economizer setup, as long as the outdoor temperature is
below the indoor temperature. The cooling demand will
be automatically set to 100% in this mode, meaning
mechanical cooling should be operating at full capacity
while this mode is active. This will stay active until the
LC returns the unit to normal operation. This mode is
only available when connected to the LC.
Emergency Ventilation Mode
If a hydrogen detector is connected to the LC/WR Series
system and there is a hydrogen alarm event, the system
will go into emergency ventilation mode. In emergency
ventilation mode, the economizers on the wall units will
be commanded to 100%. After 2 minutes, the blowers
will turn on in order to exhaust any hydrogen gas buildup
within the shelter. Once the hydrogen alarm clears, the
system will resume normal operation. This mode is only
available when connected to the LC.
Model/Serial Number Configuration
FUSION-TEC WR Series wall-mount units configure
some settings based on the model number that is input
into the unit. The model and serial number are entered
at the factory, and should be retained during a software
update. However, after a software update, it is best
practice to verify that the model and serial number is
still present and accurate. If the model and/or serial
number is missing or incorrect they will need to be re-
entered.
NOTE: When re-entering the model number, only valid
model number entries will be accepted by the
PLC.
To update model/serial numbers:
1. Press MENU key to go to the Main Menu screen.
2. Press UP or DOWN keys and ENTER key to enter
ENGINEER password 9254.
3. Press UP or DOWN keys to scroll to Adv Sys
Config; press ENTER key.
4. Press UP or DOWN keys to scroll to Model/Serial
Set B1.
5. Press ENTER key to advance the cursor to the digit
that needs changed in the model/serial number.
6. Press UP or DOWN keys to change value of the digit.
NOTE: The characters are in ASCII format and some
digits may not have a character assigned to
them. This will required pressing the UP or
DOWN key until these characters are passed.
7. Continue Steps 5 and 6 until the model/serial
number(s) are correct and reflect the number on
the product label.
For more information on the options and settings
available for specific model numbers, please see the
model number breakdown in Figure 59 on page 39.
Electric Heat Option
Electric Heat Components
Electric Heating Element
The unit is optionally equipped with a 1.5kw or 5kw
heat strip. The heat strip is located next to the blower
assembly and uses resistive heat.
Thermal Overload
The heater assembly has a thermal overload wired in
series with the heating element. This device has a
cycling limit which opens at 130°F and resets at 80°F.
The limit is also equipped with a redundant thermal
fuse that will open at 150°F.
Electric Heat Operation
The heat strip will be activated on a call for heat. This
call can be generated by the LC or the wall-mount unit
operating in orphan mode.
Bard Guard Anti-Theft System Option
The unit has the option to be shipped from the factory
with a low pressure switch, panel sensors and a speaker.
These devices are used with the Bard Guard BG1000 anti-
theft controller to provide an anti-theft measure. These
sensors and switch form a loop that when connected to
the BG1000 controller will cause the system to go into
alarm if any of the front panels or coil assemblies are
removed without being disarmed. The speaker provides an
audible alert that the system is being tampered with. The
Bard Guard anti-theft control sensor connection is wired
to terminals 7 and 8 on the wall-mount unit. The speaker
connection is wired to terminals 5 and 6 on the wall-
mount unit. See the latest revision of BG1000 Installation
Instructions 2100-672 for directions on connecting the
wall-mount units to the BG1000 controller.
Manual 2100-695C
Page
37 of 56
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Troubleshooting
