General Information; Air Conditioning System; Wall-Mount Air Conditioner Units; General - Bard MULTI-TEC W42ACE Series Service Instructions Manual

GENERAL INFORMATION

Air Conditioning System

The Bard air conditioning system is composed of
MULTI-TEC wall-mounted air conditioners matched
with an LC6000 supervisory controller, th-Tune single-
unit controller or Bard PGD stand-alone display. If
only one wall-mounted air conditioner is being used,
it can be matched with either the LC6000 supervisory
controller, th-Tune or PGD. If more than one wall-
mount unit is installed, the LC6000 controller must
be matched with the air conditioning units. The wall
mounts are specifically engineered for telecom/motor
control center rooms.
NOTE: The LC6000 supervisory controller and MULTI-
TEC wall-mount units are designed specifically
to work together. The controller cannot
run 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 are designed to supply full
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. In
the event that free Cooling operation cannot satisfy the
load requirements, mechanical cooling will be utilized
to assist in cooling the shelter.
MULTI-TEC units are fully charged with refrigerant and
have optional electric 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.
Manual 2100-725C
Page 4 of 39
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 air
conditioner. 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