Manual 2100-614K
Page
4 of 61
There is an Ethernet-based remote communication
option that can be either factory or field installed. See
section on Communication Module.
CONTROLLER CERTIFICATIONS
The MC4002 main controller board, optional alarm
boards, optional communication module, and remote
sensors have undergone extensive testing for immunity
and emissions. This system is FCC-compliant, in
accordance with CE requirements, and meets the
following standards:
MC4002 Series
Master Controller
This device complies with FCC Rule Part 15, Subpart
B, Class A. Operation is subject to the following two
conditions:
1. This device may not cause harmful interference
2. This device must accept any interference
received, including that which may cause
undesired operation.
This device complies with CE Standards EN55011/
EN50081 and EN55024 for ISM Equipment, Class A.
This ISM device also complies with Canadian ICES –
001.
Bard Manufacturing Company, Inc.
Bryan, OH 43506
SPECIFICATIONS/FEATURES FOR
BASIC CONTROLLER
MC4002 Basic Controller
•Input power: 18-32 VAC, 60/50Hz, power is supplied
from A/C #1 and/or A/C #2
•Isolation circuitry: no line or low voltage phasing
required
•Backup power: connection for -24 VDC or -48 VDC
(-20 to -56V) maintains microprocessor operation,
front panel indication & alarm relay operation during
commercial power outages.
•Digital display: 4-character LCD
•Temperature display: F or C
•HVAC outputs: Form A (NO) relays (1A @ 24 VAC)
•Cooling control stages:
2 for each A/C unit (4 total) when configured for
economizers
1 for each A/C unit (2 total) when configured for no
economizers
•Heating Control stages:
1 for each A/C unit, 2 for each heat pump if so
configured
•Dehumidification circuit: requires optional humidity
controller as input signal
•Operating temperature range: 0 to 120F (-18 to 49C)
•Storage temperature range: -20 to 140F (-29 to 60C)
•Temperature accuracy: +/- 1F from 60-85F (16-30C)
+/- 1% outside 60-85F
•Lead/lag changeover time: 0 to 30 days
•Timing accuracy: +/- 1%
•Inter-stage time delay: 10 seconds between stages
•Inter-stage differential:
Stage 1 to 2 - Range 2-6F, default is 4
Stage 2 to 3 - Range 2-3F, default is 2
Stage 3 to 4 - Range 2-3F, default is 2
•On-Off differential: 2F (1C) is standard, 4F (3C) when
“excessive cycling” mode is enabled
•Cooling setpoint range: 65 to 90F (18.3 to 32.2C)
•Comfort setting-Cooling 72F (22C), Heating 68F(20C),
for 1 hour
•Dead band (difference between cooling and heating
setpoints): 2F to 40F (1.1C to 22.2C)
•Fire/smoke interface: standard NC circuit jumper,
remove for connection to building system control, shuts
down outputs to both A/C units immediately
•Memory: EEPROM for setpoint and changeable
parameters (maintains settings on power loss)
•Space temperature sensors: One (1) local is standard,
will accept up to twp (2) optional 35' remote sensors,
Bard part number 8612-023A. When multiple sensors
are used, temperatures are averaged
•Controller Enclosure: 20-gauge pre-painted steel,
9.25"W x 13.50"H x 3.00"D, hinged cover, thirteen
(13) .875" diameter electrical knockouts
•LEDs for basic controller: Lead unit, Cooling stages
1 through 4, Heating Stages 1 – 4, Dehumidification
operation
•Six (6) Push-button controls: On/Off switch-Change
lead unit-Increase and Decrease setpoints-Program/
Save-Comfort.
MOUNTING THE CONTROLLER
Included in the controller carton is the controller and
installation instructions.
The controller should be installed on a vertical wall
approximately 4 feet above the floor-away from drafts
and outside doors or windows. Four (4) mounting holes
are provided for mounting to the wall and 7/8" holes for
conduit connections are provided in both the base, sides
and top of the controller.
TEMPERATURE SENSORS
The standard (local) temperature sensor has 12" leads and
comes installed from the factory.
CONFORMS TO UL STD 916
CERTIFIED TO
CSA STD C22.2 NO. 205