Lennox MWHA009S4, Service Manual

Page: 8 / 52

8
3.3. Terminal Connections
208/230V Outdoor Unit
Terminal Block
From Power
Supply
Terminal Block
208/230V Indoor Unit
Outdoor Unit Indoor Unit
3
2
L1
L2
1
Y/G
1
3
Y/G
Y/G
115VAC Outdoor Unit
Terminal Block
From Power
Supply
Terminal Block
115VAC Indoor Unit
Outdoor Unit Indoor Unit
3 2
L
N
1
Y/G
1
3
Y/G
Y/G
*
*
18 and 24K
unit has
five terminal
sets.
Figure 6. Single Zone Wiring
4. Indoor Unit Diagrams
WIRING DIAGRAM (INDOOR UNIT)
SW
IN
G
M
OT
O
R1
M
YELLOW
RE
D
M
5
1 2 3
BLACK
CN10A
DISPLAY BOARD
8
Wired C ontroller
OPTIONAL
ADAPTER BOARD
CN3(CN301)
0 0
8 8
44
1 1 22
33
5 5
6 6
7 7
CC
9 9AA
B B
DD
E E
F F
1 1 2 2
ON ON
0 0
8 8
44
1 1 22
33
5 5
6 6
7 7
CC
9 9AA
B B
DD
E E
F F
1 1 2 2
ON ON
0 0
8 8
44
1 1 22
33
5 5
6 6
7 7
CC
9 9AA
B B
DD
E E
F F
1 1 2
2
ON ON 0 0
8 8
44
1 1 22
33
5 5
6 6
7 7
CC
9 9AA
B B
DD
E E
F F
1 1 2 2
ON ON
ENC2+S1 ENC2+S1
0~F 0~F 0~F 0~F 0~F 0~F 0~F 0~F
NETADDRESS NETADDRESS
CODE CODE
0~15 0~15 16~31 16~31 32~47 32~47 48~63 48~63
FOR SETTING NETADDRESS FOR SETTING NETADDRESS
CN501
CN403
X Y E
To LVM
Comm.Bus
YE
LLO
W
BR
OW
N
RE
D
5
5
Program mable
Wired C ontroller
OPTIONAL
4
Note: Th e progra mmable wired
controlle r and L VM use the sam e
port CN4 03.
CN2(CN201)
NOTE: COMPONENT IN
DASH LINE IS OPTIONAL
OR FIELD WIRING
CN402
S5
FOR REMOTE ON/OF
FACTORY SETTING
MODE
REMOTE ON/OFF OFF REMOTE ON/OFF ON
Figure 7. 09K, 12K, 18K and 24K Indoor Unit Wiring Diagram (115 and 208/230VAC)