Bard MC4002-B User Manual

Manual 2100-614K
Page 25 of 61
CONTROLLER CONNECTIONS DIAGRAM 1
1-Stage (W**AB/W**LB/W**AC Series) Air Conditioners – No Economizers
B/W1
MUST BE CONNECTED AS SHOWN
FACTORY INSTALLED JUMPER. REMOVE JUMPER AND CONNECT Y2 IN CONTROLLER TO Y2 IN UNIT
FOR BALANCED CLIMATE OPERATIONS. SEE UNIT MANUAL FOR INFORMATION ON BALANCED CLIMATE.
IS POLARITY SENSITIVE AND
4
RT
3
3
RT
3
THE JUMPER BETWEEN RT AND R MUST BE INSTALLED
2 ADD JUMPER IF 15KW OR HIGHER ELECTRIC HEAT IS INSTALLED
2
W2
W2
2
REQUIRES ALARM RELAY IN EACH A/C UNIT, WHICH IS PART OF "J" CONTROL MODULE.
"NO" CONTACTS - CLOSE ON RISE
HUMIDITY CONTROLLER
"NC" CONTACTS - OPEN ON ALARM
REMOVE JUMPER
GENERATOR RUN ALARM
OPTIONAL FIELD INSTALLED
1
NUMBER 8612-023A
SILVER
COPPER
SILVER
COPPER
SILVER
COPPER
SENSORS, BARD PART
SENSOR 12" LEADS
STANDARD LOCAL
35 FOOT TEMPERATURE
CU, AND SILVER LEAD TO AG.
LEAD MUST CONNECT TO
CONTROLLER
GEN
REM 2
REM 1
LOCAL
UNIT 2
UNIT 1
4
48 VDC
HUMIDITY
POLARITY SENSITIVE. COPPER
NOTE: ALL SENSORS ARE
OPTIONAL FIELD INSTALLED
OPTIONAL ALARM BOARD
REFRIGERANT LOCKOUT
CONNECTIONS FOR 24V TERMINALS
A/C #1
LOCKOUT 2
LOCKOUT 1
3
2
2
3
CONNECTION
FIRE/SMOKE
OPTIONAL - 48 VDC
24V TERMINALS
A/C #2
OPERATE ON DC POWER ONLY
OR CONTROLLER WILL NOT
"NC" CONTACTS - OPEN ON ALARM
2
3
3
2
Y2
FIRE/SMOKE ALARM CIRCUIT
Y1
Y2
Y1
R
G
C
R
B/W1
G
C
CU
AG
CU
AG
R
G
W
C
R
G
W
-
H2
H1
G2
G1
AG
CU
Y2
Y1
Y2
Y1
C
+
F2
F1
CB
REMOVE JUMPER
MIS-4279
1
NOTE: DC BACK-UP POWER
4
MC4000 series

Bard MC4002-B Specifications

General

Brand	Bard
Model	MC4002-B
Category	Controller
Language	English