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Ceiling Concealed Unit
Electric Wiring
Wiring Precautions
1. Before obtaining access to terminals, all supply circuits must be disconnected.
2. Improperly installed and grounded field wiring poses fire and electrocution hazards. For
high voltage connections, flexible electrical conduit is recommended whenever vibration
transmission may create a noise problem within the structure. To avoid these hazards, you
MUST follow requirements for field wiring installation and grounding as described in the
National Electrical Codes (NEC) and your local/state electrical codes. All field wiring MUST
be performed by qualified personnel. Failure to follow these requirements could result in
death or serious injury.
1. EACH unit should be installed with its own dedicated power supply source. The power source
needs to be sized correctly for the unit capacity.
2. Before turning on, verify that the voltage is within the 187~252 V range (for single phase
unit).
3. Always use a grounded terminal and install a special receptacle to supply power to the
air conditioner. For high voltage connections, flexible electrical conduit is recommended
whenever vibration transmission may create a noise problem within the structure.
4. Use a dedicated breaker and receptacle matched to the capacity of the air conditioner.
Electrical Cable Connection
Type
Model
4MXD8509A
4MXD8512A
Cooling
4MXD8518A
and
Heating
4MXD8521A
4MXD8524A
NOTE: The sectional area listed above is applicable to the power cord with a maximum length
of 49.2 feet (15 meters). For a longer cord, its sectional area should be enlarged to avoid cord
burnout due to over-current.
Electrical Notes:
Running
Current (A)
Power Supply
Indoor Fan
Motor
0.28
0.31
0.41
208/230V-60Hz
WARNING
Input Power (W)
Cooling Heating
80
80
100
100
0.5
124
124
22
Wiring between indoor unit
and outdoor unit
AWG 14 x 4 Stranded
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