Terminal Connections; Indoor Unit Diagrams - Lennox MCA Series Service Manual

4.3.

Terminal Connections

115VAC Outdoor Unit
Terminal Block
2
1 3
N
L
Y/G
From Power
Suppl y
Outdoor Unit

5. Indoor Unit Diagrams

FOR REMOTE ON/OF
S5
MODE
REMOTE ON/OFF ON
FACTORY SETTING
1 2 3
FOR SETTING NETADDRESS FOR SETTING NETADDRESS
0 0
ENC2+S1 ENC2+S1
8 8
CODE CODE 0~F 0~F
0~15 0~15
NETADDRESS NETADDRESS
Figure 7.
115VAC Indoor Unit
Terminal Block
1
3
Y/G
Indoor Unit
Figure 6.
REMOTE ON/OFF OFF
0 0 0 0
ON ON ON ON
1 1 2 2 8 8 1 1 2 2 8 8
0~F 0~F 0~F 0~F
16~31 16~31 32~47 32~47
09K and 12K Indoor Unit Wiring Diagram (115 and 208/230VAC)
Y/G
208/230V Outdoor Unit
Terminal Block
1 2
3
Y/G
From Power
Outdoor Unit
Single Zone Wiring
M
~
3
3
MAIN CONTROL BOARD
CN10A
DISPL AY BOAR D
8
)
CN 2 (C N2 01
Non-Programmble
Wired Controller
0 0
ON ON ON ON
Programmable
Wired Controller
1 1 2 2 1 1 2 2
8 8
0~F 0~F
48~63 48~63
8
208/230V Indoor Unit
Terminal Block
L2
L1
1
Y/G
Suppl y
Indoor Unit
NOTE: COMPONENT IN
M
DASH LINE IS OPTIONAL
OR FIELD WIRING
(T2)
ADAPTER BOARD
)
CN 3 (C N3 01 CN 50 1
5
CN 40 2
OPTI O NAL
5
OPTI O NAL
4
Note: The programmable wired
controller and LVM use the same
port CN403.
Y/G
*
3
*
18 and 24K
unit has
five terminal
sets.
(T1)
CN 40 3
X Y E
To LVM
Comm.Bus