Bard MC4002-BC User Manual

Manual 2100-614K
Page 53 of 61
CONTROLLER CONNECTIONS DIAGRAM 29
Single Unit with Alarm Board
COPPER
S ILVER
OPTIONAL FIELD INSTALLED
1
MIS-4303
Y1
Y2
CU
AG
G1
RE MOVE J UMP ER
G2
H1
H2
C
W
R
AG
CU
AG
CU
UNIT 2
2
POLARITY SENSITIVE. COPPER
3
LOCKOUT 1
LOCAL
S ILVER
A/C #1
LEAD MUST CONNECT TO
SENSOR 12" LEADS
COPPER
S ILVER
REFRIGERANT LOCKOUT
24V TERMINALS
RE M 1
LOCKOUT 2
G
RE M 2
CB
3
OPTIONAL - 48 VDC
+
CONTROLLER
GEN
NUMBE R 8612-023A
RE MO VE J UMP ER
GENERATOR RUN ALARM
HUMIDITY CONTROLLER
CU, AND S ILVER LEAD TO AG.
S TANDARD LOCAL
35 FOOT TEMPERATURE
"NO" CONTACTS - CLOSE ON RISE
FIRE / S MOKE ALARM C IRCUIT
CONNECTION
FIRE / S MOKE
R
G
W
-
Y2
Y1
HUMIDITY
C
"NC" CONTACTS - OPEN ON ALARM
3
COPPER
NOTE: ALL SENSORS ARE
SENSORS , BARD P ART
F2
UNIT 1
2
"NC" CONTACTS - OPEN ON ALARM
48 VDC
F1
1
ADDED WIRES TO KEEP "UNIT 2 POWER LOSS" ALARM OFF
2
2
3
OPTIONAL FIELD INSTALLED
OP TIONAL ALARM BOARD
CONNECTIONS FOR
NOTE: DC BACK-UP P OWER
IS POLARITY S ENS ITIVE AND
MUST BE CONNECTED AS SHOWN
OR CONTROLLER WILL NOT
OPERATE ON DC POWER ONLY
REQUIRES ALARM RELAY IN EACH A/C UNIT WHICH IS PART OF "J " CONTROL MODULE
WIRE PER
CORRECT
DIAGRAM FOR
UNIT BEING
CONNECTED
Single Unit Application for MC4002 with Alarm Board
When connecting an MC4002 with alarm board to a single unit, the unit must be wired to the Unit 1 position on the
MC4002 board. A power loss alarm will appear for Unit 2. To eliminate this nuisance alarm, jumpers must be placed
from Unit 1 “R” terminal to Unit 2 “R” terminal and Unit 1 “C” terminal to unit 2 “C” terminal on the control board
(see Figure 21).
The control must be congured as follows: Number 8 “ALT” must be set to “NO”; Number 9 “LLCO” must be set to
“0”.
Wire the unit according to the correct diagram for the model being applied; see appropriate connection diagram.

Bard MC4002-BC Specifications

General

Brand	Bard
Model	MC4002-BC
Category	Controller
Language	English