Wiring Diagrams (Indoor Units) - Lennox MCA Series Installation Instructions Manual

BLUE
RED
V
U
COMPRESSOR
Y/G

Wiring Diagrams (Indoor Units)

FOR REMOTE ON/OF
S5
MODE
REMOTE ON/OFF ON
FACTORY SETTING
1
2 3
FOR SETTING NETADDRESS
ENC2+S1
CODE 0~F
NETADDRESS
Figure 32. 09K and 12K Indoor Unit Wiring Diagram (115 and 208/230VAC)
OUTDOOR
U
V
W
BLACK
W
CN 17
Y/G
Figure 31. 18K and 24K 208/230VAC Outdoor Unit Wiring Diagram
REMOTE ON/OFF OFF
0 0
ON ON
1 2 1 2
8 8
0~F
0~15 16~31
Y/G Y/G
BLUE
S
CN 6 CN 7 CN 8 CN 2
CN 3
MAIN
PCB
CN 414
3
DC-FAN
M
~
3
3
MAIN CONTROL BOARD
CN10A
8
0
ON 0
ON
8 1 2 1 2
8
0~F 0~F
32~47 48~63
16
BLACK 3
1 2 3 L1L2
Y/G
L1 L2
NOTE: COMPONENT IN
M
DASH LINE IS OPTIONAL
OR FIELD WIRING
DISPL AY BOAR D
)
)
CN 2 (C N2 01 CN 3 (C N3 01
OPTI O NAL
Wired Controller
5
OPTI O NAL
Programmable
4
Wired Controller
Note: The programmable wired
controller and LVM use the same
port CN403.
Y/G
(T1)
(T2)
ADAPTER BOARD
CN 50 1
5
CN 40 2
CN 40 3
X Y E
To LVM
Comm.Bus