12
Cross-Sectional
(A)+(B)
(A) Power Supply Wiring Length (ft)
(C) Control
Fuse or Circuit
Area (AWG)
(B) Power Line Length (ft)
Line Length (ft)
Model
(#14)
(#12)
(#14)
Breaker Capacity
CH1271
131 (Max.)
230 (Max.)
65 (Max.)
20A
CH1872
131 (Max.)
230 (Max.)
98 (Max.)
20A
# ... AWG (American Wire Gauge)
Table 4
G
Be sure to comply with local codes on running the
wire from the indoor unit to the outdoor unit (size
of wire and wiring method, etc.).
G
Each wire must be firmly connected.
G
No wire should be allowed to touch refrigerant
tubing, the compressor, or any moving part.
G
Be sure to connect the power supply line to the
outdoor unit as shown in the wiring diagram. The
indoor unit draws its power from the outdoor unit.
G
Do not run wiring for antenna, signal, or power
lines of television, radio, stereo, telephone, secu-
rity system, or intercom any closer than 3'3" (1 m)
from the power cable and wires between the
indoor and outdoor units. Electrical noise may
affect the operation.
G
To avoid the risk of electric shock, each air con-
ditioner unit must be grounded.
G
For the installation of a grounding device,
please observe local electrical codes.
G
Grounding is necessary, especially for units
using inverter circuits, in order to release
charged electricity and electrical noise caused
by high tension.
Otherwise, electrical shock may occur.
G
Place a dedicated ground more than 7' (2 m)
away from other grounds and do not have it
shared with other electric appliances.
*
A disconnect switch may be required by
national or local codes.
NOTE
WARNING
WARNING
CAUTION
Always comply with national and local code
requirements.
CAUTION
Fig. 7a
(CH1271)
Di
s
co
nn
ect
s
witch
*
1
2
3
1
2
3
4
5
6
Gro
un
di
ng
li
n
e
115V
115V
115V
INDOOR
UNIT
OUTDOOR
UNIT
Field
su
pply
Gro
un
di
ng
li
n
e
L
N
Po
w
e
r
su
pply
S
i
ng
le pha
s
e 115V 60HZ
Termi
n
al
Termi
n
al
(A)
(B)
(C)
(B)
Fig. 7b
(CH1872)
Di
s
co
nn
ect
s
witch
*
1
2
3
1
2
3
4
5
6
Gro
un
di
ng
li
n
e
2
3
0/20
8
V
2
3
0/20
8
V
2
3
0/20
8
V
INDOOR
UNIT
OUTDOOR
UNIT
Field
su
pply
Gro
un
di
ng
li
n
e
L
1
L
2
Po
w
e
r
su
pply
S
i
ng
le pha
s
e 2
3
0/20
8
V 60HZ
Termi
n
al
Termi
n
al
(A)
(B)
(C)
(B)
WIRING SYSTEM DIAGRAM
08-193 XHS1271 9/12/08 2:58 PM Page 12
