Manual 2100-746D
Page
11 of 59
MIS-4189
Secondary Control Board (MC5600-C and MC5600-BC Models Only)
The Secondary Control Board (P/N 8612-067) provides connection points for up to three additional wall-mount
air conditioners or heat pump units labeled System 4, 5 and 6. All units can include optional mechanical
dehumidification, electric heat strips, economizer and ventilation.
FILTER IN
DUST IN
LOR IN
AUX 4 IN
ECON
ECON
AUX 5 IN
LOR IN
DUST IN
FILTER IN
R
C
W1
W2
EC
Y1
Y2
G
O/B
A
D
H
H
D
A
O/B
G
Y2
Y1
EC
W2
W1
C
R
NO
COM
NC
NC
COM
NO
AUX 4
OUT
AUX 5
OUT
FIL
TER IN
DUST IN
LOR IN
AUX 6 IN
ECON
R
C
W1
W2
EC
Y1
Y2
G
O/B
A
D
H
NO
COM
NC
AUX 6
OUT
Unit 4
Connections
Unit 5
Connections
Unit 6
Connections
2ND ALARM BOARD
1ST I/O BOARD
