Standard for Warm Air Heating
and Air Conditioning Systems ............ANSI/NFPA 90B
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
Control System
This Bard control system can be composed of a variety
of non-PLC operated Bard wall-mount air conditioners
or heat pump model offerings. The MC5300 controller
can be matched with up to a maximum of three wall-
mount air conditioners or heat pumps. The MC5600
controller can be matched with up to a maximum of six
wall-mount air conditioners or heat pumps.
See Specifications Sheet S3612 for more information
on the control system.
Controller and Accessories
All MC5000 Series controllers have Ethernet connectivity
with local monitoring and diagnostics through the use of
the color touch screen. If using alarm boards, they will
provide NO/NC contacts as an option. The alarm boards,
MC5300-BC Alarm Board (P/N 8612-068) or MC5600-BC
Alarm Boards (P/N 8612-068 and P/N 8612-069), can
also be used to connect to a building Network Operations
Center (NOC) system using Normally Open and Normally
Closed dry contacts.
One onboard temperature/humidity sensor (P/N 8408-059)
is included with the controller.
This sensor, or optional
remote temperature/humidity sensor w/35' cable (see
below), must be used for proper operation.
The power (24VAC) for the control system comes from the
units connected to each system module of the I/O boards.
The display is powered through the connection to the main
I/O board. Therefore, a separate power supply is not required.
NOTE:
Bard recommends installation of an optional
remote temperature-only sensor (P/N 8301-095)
for redundancy. See
Temperature Sensors
section on page 18 for further information.
Optional Sensors
An optional remote temperature/humidity sensor with a
35' cable (P/N 8408-061) can be purchased to replace
the factory-installed (local, not expandable) temperature/
humidity sensor (P/N 8408-059, with 11" cable).
Only
one temperature/humidity sensor can be connected to the
controller at any given time.
The optional temperature/humidity sensor should be
remotely mounted in a location that is least likely to
be affected by open doors, rack-mounted fans, radiant
heat sources, etc. It is recommended that the sensor
be mounted using the screw slot located on the sensor
housing or be fastened with a zip tie.
Up to two additional remote temperature-only sensors (P/N
8301-095) with a standard 35' cable can be added to
the controller. The additional sensors can be configured
for either indoor or outdoor use, with two configuration
options: 1.) As one indoor and one outdoor sensor or 2.)
both as additional indoor sensors. Sensors are limited to the
following use: Remote 1 is for indoor use only and Remote
2 can be configured for either indoor or outdoor use.
Install the temperature sensor(s) in a location least likely
to be affected by open doors, rack-mounted fans, radiant
heat sources, etc. Locating the sensor between two return
grilles is often the best location, but every installation is
unique. Location height should be approximately 48" to
60" above the floor. These sensors can be secured with
zip ties or any means of fastening. To prevent excessive
exposure to water or to keep moisture from accumulating,
the sensor should be vertically oriented with the wires
being located towards the ground.
Manual 2100-746D
Page
5 of 59
MC5000 Series Controller and Accessories
MC5000 Series Controller
Temperature-Only Sensor
P/N 8301-095
Indoor Air Temperature/
Humidity Sensor
P/N 8408-061
