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POWER AND WIRING INSTALLATION
Electric Wiring between the Indoor and Outdoor Units
Single-phase units (18K-30K) Single-phase units (36K-48K)
Power Supply
Wire
Communication
Wire
Indoor Unit Electrical Wiring
Remove the left side panel and the electric box cover, and then insert the communication wire and
power wire into the terminal board.
Indoor Communication Wiring
The recommended communication cable size is a minimum 18/2 AWG stranded bare copper
conductors THHN 300V unshielded wire. Use shielded cable if installation is in close proximity of
RF and EMI transmitting devices. Locate wire terminals #1 and #2. Connect communication cable
from outdoor unit to terminals #1 and #2. Secure cable inside wire clamp/strain relief. Verify
cable is secure, not loose and no external force on wires affects the connections at the terminals.
Indoor Unit Power Wiring
Locate wire terminals L1 and L2. Connect main electrical power
outdoor unit to terminals L1 and L2. Connect ground wire to
grounding screw. Secure electrical wires inside wire clamp/strain
relief. Verify wires are secure, not loose and no external force on
wires affects the connections at the terminals.
NOTE: Record wire colors and terminal references for
use with Outdoor Unit wire connections.
20
Left Side Panel
Electric Box Cover
Wired Controller (optional)Wired Controller (optional)
Comm Wires Comm Wires
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