Single Unit Application For Mc4002 With Alarm Board - Bard MC4002 Series Installation Instructions & Replacement Parts List

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 configured 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.
OPTIONAL ALARM BOARD
CONNECTIONS FOR
REFRIGERANT LOCKOUT
2
LOCKOUT 1
3
1
2
LOCKOUT 2
3
OPTIONAL FIELD INSTALLED
35 FOOT TEM PERATURE
SENSORS, BARD PART
REQUIRES ALARM RELAY IN EACH A/C UNIT WHICH IS PART OF "J" CONTROL M ODULE
1
ADDED WIRES TO KEEP "UNIT 2 POWER LOSS" ALARM OFF
2 3
CONTROLLER CONNECTIONS DIAGRAM 29
Single Unit with Alarm Board
FIRE/SM OKE ALARM CIRCUIT
"NC" CONTACTS - OPEN ON ALARM
OPTIONAL - 48 VDC
CONNECTION
A/C #1
24V TERM INALS
WIRE PER
CORRECT
DIAGRAM FOR
UNIT BEING
CONNECTED
STANDARD LOCAL
SENSOR 12" LEADS
NUM BER 8612-023A
GENERATOR RUN ALARM
"NC" CONTACTS - OPEN ON ALARM
OPTIONAL FIELD INSTALLED
HUM IDITY CONTROLLER
"NO" CONTACTS - CLOSE ON RISE
F1
FIRE/SM OKE
REM OVE JUM PER
F2
+
48 VDC
-
CB
C
W
Y1
UNIT 1
Y2
G
R
2
C
W
Y1
Y2
UNIT 2
G
R
3
COPPER
CU
LOCAL
SILVER
AG
COPPER
CU
REM 1
SILVER
AG
COPPER
CU
REM 2
SILVER
AG
G1
GEN
REM OVE JUM PER
G2
H1
HUM IDITY
CONTROLLER
H2
NOTE: DC BACK-UP POWER
IS POLARITY SENSITIVE AND
M UST BE CONNECTED AS SHOWN
OR CONTROLLER WILL NOT
OPERATE ON DC POWER ONLY
NOTE: ALL SENSORS ARE
POLARITY SENSITIVE. COPPER
LEAD M UST CONNECT TO
CU, AND SILVER LEAD TO AG.
M IS-4303
Manual 2100-614K
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