General Information - Bard W48A2PQ Installation And Service Instructions Manual

FREE COOLING UNIT SYSTEM
The Bard Free Cooling Unit system is composed of wall-mounted air conditioners matched with a Bard-Link
lead/lag controller or thermostat. The wall mounts are specifically engineered for telecom motor control center rooms.
If only one wall-mounted air conditioner is being used, it can be matched with either the Bard-Link
controller or thermostat. If more than one wall mount is installed, the Bard-Link
matched with the air conditioning units.
NOTE: The Bard-Link PLC lead/lag controller and wall-mount units are designed specifically to work together. The
TM
PLC controller cannot run other Bard models or other brands of systems, nor can other controllers run the
PLC wall-mount units. They are a complete system, and must be used together.
WALL-MOUNT AIR CONDITIONER UNITS
The W-Series units operate on VAC power. The units will supply 100% of rated cooling airflow in free cooling mode
with ability to exhaust the same amount through the unit itself without any additional relief openings in the shelter.
Each of these units are fully charged with refrigerant and have auxilliary heat installed.
BARD-LINK PLC CONTROLLER
TM
LC5000-100 (controller and accessories included with controller shown below).
LC5000-100 Series
* One remote temperature/humidity sensor is included with the LC-5000-100 controller. If the site in which
the LC-5000-100 controller will be used has more than one zone (maximum three zones per LC-5000-100),
additional remote temperature/humidity sensors (one sensor per zone) will need to be purchased and installed
in the additional zones. One additional temperature-only sensor may also be used in Zone 1 but will also need
to be purchased separately.
SINGLE UNIT OPERATION
Bard thermostat 8403-077 or 8403-078 can be used in
place of the BARD-LINK
TM
W-Series wall mount air conditioner is being installed.
If using a thermostat instead of the PLC controller, the
alarm logging and remote communication capabilities
of the controller will not be available. See page 20 for
information on installing and setting up the thermostat
for single unit operation.
Programmable Logic
Controller
PLC controller when only one

GENERAL INFORMATION

PLC lead/lag controller must be
TM
TEC-EYE Hand-Held
Diagnostic Tool
Bard P/N 8301-059
Remote Temperature/
Humidity Sensor*
Bard P/N 8301-058
PLC
TM
PLC lead/lag
TM
Communication
EMI Filters
Bard P/N 8301-055
Manual 2100-642
Page 3 of 82