Manual 2100-665A
Page
3 of 51
GENERAL INFORMATION
FREE COOLING UNIT SYSTEM
The Bard Free Cooling Unit System is composed of
MULTI-TEC wall-mounted air conditioners matched
with an LC6000 lead/lag controller. The wall mounts
are specifically engineered for telecom/motor control
center rooms.
NOTE:
The LC6000 lead/lag controller and MULTI-
TEC wall-mount units are designed specifically
to work together. The controller cannot run
other Bard models or other brands of systems,
nor can other controllers run the MULTI-TEC
wall-mount units. They are a complete system,
and must be used together.
WALL-MOUNT AIR CONDITIONER
UNITS
The MULTI-TEC 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 optional auxilliary heat.
GENERAL
The equipment covered in this manual is to be installed
by trained, experienced service and installation
technicians.
The refrigerant system is completely assembled and
charged. All internal wiring is complete.
The unit is designed for use with or without duct work.
Flanges are provided for attaching the supply and return
ducts.
These instructions explain the recommended method
to install the air cooled self-contained unit and the
electrical wiring connections to the unit.
These instructions and any instructions packaged with
any separate equipment required to make up the entire
air conditioning system should be carefully read before
beginning the installation. Note particularly any tags
and/or labels attached to the equipment.
While these instructions are intended as a general
recommended guide, they do not supersede any national
and/or local codes in any way. Authorities having
jurisdiction should be consulted before the installation
is made. See
ADDITIONAL PUBLICATIONS
for
information on codes and standards.
Sizing of systems for proposed installation should be
based on heat loss and heat gain calculations made
according to methods of Air Conditioning Contractors
of America (ACCA). The air duct should be installed
in accordance with the
Standards of the National
Fire Protection Association for the Installation of Air
Conditioning and Ventilating Systems of Other Than
Residence Type, NFPA No. 90A
, and
Residence Type
Warm Air Heating and Air Conditioning Systems, NFPA
No. 90B
. Where local regulations are at a variance with
instructions, installer should adhere to local codes.
SHIPPING DAMAGE
Upon receipt of equipment, the cartons should be
checked for external signs of shipping damage. If
damage is found, the receiving party must contact
the last carrier immediately, preferably in writing,
requesting inspection by the carrier’s agent.
These units must remain in upright position at all
times.
ADDITIONAL PUBLICATIONS
These publications can help when installing the
furnace. They can usually be found at the local library
or purchased directly from the publisher. Be sure to
consult the current edition of each standard.
National Electrical Code ......................ANSI/NFPA 70
Standard for the Installation of Air Conditioning
and Ventilating Systems ...................ANSI/NFPA 90A
Standard for Warm Air Heating
and Air Conditioning Systems ............ANSI/NFPA 90B
Load Calculation for Residential Winter
and Summer Air Conditioning ............. ACCA Manual J
Duct Design for Residential Winter and Summer
Air Conditioning and Equipment Selection
....................................................... ACCA Manual D
For more information, contact these publishers:
Air Conditioning Contractors of America (ACCA)
1712 New Hampshire Ave. N.W.
Washington, DC 20009
Telephone: (202) 483-9370 Fax: (202) 234-4721
American National Standards Institute (ANSI
)
11 West Street, 13th Floor
New York, NY 10036
Telephone: (212) 642-4900 Fax: (212) 302-1286
American Society of Heating, Refrigeration and Air
Conditioning Engineers, Inc. (ASHRAE)
1791 Tullie Circle, N.E.
Atlanta, GA 30329-2305
Telephone: (404) 636-8400 Fax: (404) 321-5478
National Fire Protection Association (NFPA
)
Batterymarch Park
P. O. Box 9101
Quincy, MA 02269-9901
Telephone: (800) 344-3555 Fax: (617) 984-7057
