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INSTALLATION INSTRUCTIONS
Step 3 - Installation of the Outdoor Unit (Cont.)
Model:
2U18MS2HDA1
3U24MS2HDA1
(Standard connection
for indoor units A,B
& C. Also, showing
optional room card
connections (future)
and connections for a
central controller)
Model: 2U20EH2VHA
3U24EH2VHA
4U36MS2HDA1
4U36EH2VHA1
(Standard connection
for indoor units A & B)
18
Outdoor Unit
C
Optional
YCZ-A004
Outdoor unit
Power Wiring
Power Wiring
To Service Disconnect
To Service Disconnect
208/230 Volt Supply. L1 to L1. L2 to L2.
230 Volt Supply. 1 to L1, 2 to L2.
Indoor unit A
1 )
(N
(L
)
2
3
A
Strain Relief
Brackets
Indoor unit B
B
A
Power Wiring
To Service Disconnect
208/230 Volt Supply. L1 to L1. L2 to L2.
Indoor Unit A
Suggested Colors:
L1=White
L2=Black
L3=Red
Ground= Solid Green
or Green-Yellow
Strain Relief Brackets
Diagnostic and Control
Only on FlexFit 4U
Only on FlexFit 3U & 4U
and Arctic 2U & 3U
and Arctic 2U & 3U
(N
)
(L
)
1
2
3
4
( C
)
1 )
(N
(L
)
( C
)
1 )
(N
(L
)
( C
)
1 )
(N
(L
)
2
3
2
3
2
3
B
C
D
Indoor unit C
Indoor unit D
Sugested Colors
Control Wiring
1
=White
4 Wire - 14 AWG
=Black
2
Stranded
3
=Red
=Green
( C
)
31-5000564 Rev. 1
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