18
INSTALLATION OF POWER AND WIRING
5. Following the same wire colors and terminal references from the indoor unit, tightly
connect interconnecting wires to the outdoor unit terminal block per wiring diagram above.
NOTE:
Crossing interconnecting wires will cause system malfunction and possible damage.
6. Tightly connect main power wires to outdoor unit terminal block per wiring diagram above.
7. Secure all wires inside wire clamp/strain relief. Verify wires are secure, not loose and no
external force on wires affects the connections at the terminals.
8. Replace service panel on right side of the outdoor unit.
9. Connect main power wires and conduit to unit disconnect switch box per manufacturer’s
instructions, National Electrical Code (NEC) and local electrical codes.
•
Electrical Disconnecting means must be provided and shall be located within sight and
readily accessible from the unit.
• Failure to follow this caution may result in equipment damage or improper operation.
• All wires running from the indoor to outdoor unit must comply with National Electrical
Code (NEC) and local codes.
• No wire should be allowed to touch refrigerant tubing, compressor or any moving parts.
• All wires must be connected firmly to terminal block to avoid unit malfunction,
overheating and possible fire hazard.
CAUTION
Wiring Diagram
18K and 24K BtuH
Blue
Black
Brown
Grn/Yel
Outdoor Unit
Indoor Unit
N(1)
2
3
GND
N(1)
2
3
L1
L2
GND
Interconnecting
Wires
Black
White
Grn/Yel
Main Power
Wires
GND
L2
L1
