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115VAC Outdoor Unit
Terminal Block
1
2
3
L
Y/G
From Power
Suppl y
Outdoor Unit
This unit must be properly grounded and protected by a circuit breaker. The ground wire for the unit must not be
connected to a gas or water pipe, a lightning conductor or a telephone ground wire.
Do not connect power wires to the outdoor unit until all other wiring and piping connections have been completed.
Do not install the unit near a lighting appliance that includes a ballast. The ballast may affect remote control operation.
Outdoor Unit Model
MHB009S4S-1L
MHB012S4S-1L
MHB009S4S-1P
MHB012S4S-1P
MHB018S4S-1P
MHB024S4S-1P
MCA = Minimum Circuit Amps
Figure 31. Indoor Unit Terminal Block
115VAC Indoor Unit
Terminal Block
N
1
Y/G
Indoor Unit
Figure 32. Single Zone Wiring
IMPORTANT
Table 8. Single Zone Installation Electrical
Voltage/Phase, Hz
Terminal block
Screw
Cable Clam p
The wiring diagram is located
on the inside of the indoor unit's
terminal block cover.
208/230V Outdoor Unit
Y/G
3
Y/G
115 / 1 / 60
208-230 / 1 / 60
14
Terminal Block
Cover
Terminal Block
1
2
3
L1
L2
Y/G
From Power
Suppl y
Outdoor Unit
MCA
20
18.5
12
15
15
19
208/230V Indoor Unit
Terminal Block
Y/G
*
1
3
*
18 and 24K
unit has
five terminal
sets.
Indoor Unit
Max Fuse
30
25
15
15
20
30
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