Installation Instructions
(cont.)
-6-
3. Connect the cable to the Indoor unit
Electrical Work
Electric safety regulations for the initial installation:
• If there are any safety concerns with the electrical power supply, the technician should consult a certified electrician
and have the problem resolved before installing the unit.
• Power voltage should be in the range of 90%~110% of rated voltage.
• The circuit breaker at the electrical panel should be no more than 1.5 times the max current of the outdoor unit. All
the electrical information is located on the reverse side of the electrical cover on the outdoor unit. Follow all local and
national electric codes.
• Each outdoor unit must have its won circuit breaker.
• Install the proper sized electrical wire from the circuit breaker located at the electrical panel to an outdoor
weatherproof disconnect.
• The outdoor unit must be grounded per code. If the unit is not grounded it will not operate per system specifications.
• Install a liquid tight electrical whip from the outdoor disconnect to the outdoor unit.
• All wiring must comply with local and national codes and be installed by a certified electrician.
Suggested Minimum Wire Size
(AWG: American Wire Gauge)
Appliance
Amps
AWG Wire
Size
10
18
13
16
18
14
25
12
30
10
NOTE:
The cable size and the current of the
fuse or switch are determined by the
maximum current indicated on the
nameplate, which is located on the side
panel of the unit. Please refer to the
nameplate before selecting the cable,
fuse and switch.
Connect the Cable to the Indoor Unit
NOTE:
Before performing any electrical work, turn off the power at the main
panel to the unit.
• The inside and outside connecting cable can be connected without
removing the front grille.
• Lift the indoor unit panel up; remove the electrical box cover by loosening
the screw.
• Ensure the color of wires of outdoor unit and the terminal numbers are the
same to the indoor units respectively.
• Wrap those cables not connected with terminals with insulation tape so that
they will not touch any electrical components. Secure the cable onto the
control board with the cord clamp.
Terminal block of indoor unit
Electrical box
cover
Front Panel
To outdoor unit
To outdoor unit
Cord clamp
L1 L2 S
L1 L2 S
or
Terminal block of indoor unit
Electrical box
cover
Front Panel
To outdoor unit
To outdoor unit
Cord clamp
L1 L2 S
L1 L2 S
or
Fig. 7
