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INSTALLATION INSTRUCTIONS
Step 3 - Installation of the Outdoor Unit (Cont.)
C. Electrical Connections for the Outdoor Unit
WARNING
RISK OF ELECTRIC SHOCK.
Could cause injury or death.
Make sure power is off before touching wires.
NOTE: Be certain all wiring complies with local
building codes and NEC and that the supply
voltage for this system is correct.
• Connect the wiring for both the power source
and the indoor wiring using a conduit cable
bracket on the side of the outdoor unit
NOTE: Failure to follow the wiring guidelines can result in control board damage and communication issues
(E7 error code). This includes improper wire size, use of solid core wire, midline splicing and poor terminal
connections.
Models:
TAD3U24MOU
TAD4U36MOU
Models:
TAD2U18MOU
14
Power Wiring
To Service Disconnect
230 Volt Supply. 1 to L1, 2 to L2.
Indoor unit A
Strain Relief
Brackets
Indoor unit B
Indoor unit 1
Indoor unit 2
Sugested Colors
Control Wiring
4 Wire - 14 AWG
• Using a wire stripper, remove the insulation and
separate the wires.
• Verify that the wiring connections match the
indoor connections wire for wire.
• Ensure each wire is under the screw terminal
plate and the plate is tightened.
• Ensure the 14/4 wire cable is secured under the
strain relief bracket.
• Verify that all connections are secured
Diagnostic and Control
Only on FlexFit 4U
Only on FlexFit 3U & 4U
and Arctic 2U & 3U
and Arctic 2U & 3U
Outdoor unit
3
4
( C
)
( C
)
1 )
(N
2
(L
)
3
1 )
(N
2
(L
)
3
1 )
(N
2
(L
)
3
A
B
C
Indoor unit C
Control Wiring
4 Wire - 14 AWG
Stranded
Outdoor unit
=White
1
2
=Black
1 )
( N
(L
)
( C
)
1 )
( N
2
3
=Red
3
=Green
Stranded
Strain Relief
Brackets
Only on FlexFit 3U
(N
)
(L
)
1
2
3
4
( C
)
( C
)
1 )
(N
2
(L
)
3
D
Indoor unit D
Sugested Colors
=White
1
=Black
2
=Red
3
=Green
)
)
1
( N
2
(L
(L
)
( C
)
2
3
Power Wiring
To Service Disconnect
230 Volt Supply. 1 to L1, 2 to L2.
31-5000001 Rev. 1
- Quick Links:
- Table of Contents
- Installation Instructions
- Step 1
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