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Installation
Items
Outdoor unit models
Main pipe (L1)
Max. height difference
between outdoor and
indoor units (h1)
n=1
Outdoor
• Temper grade and minimum thickness of the refrigerant pipe
Outer diameter [mm]
ø6.35
ø9.52
ø12.70
ø15.88
ø15.88
ø19.05
ø22.23
112
Maximum allowable length
AC090MXADKH
AC100MXADKH
AC140MXADKH
AC100MXADNH
AC140MXADNH
AC120MXADKH
AC120MXADNH
50 m
30 m
indoor
L
1
Minimum thickness [mm]
Temper grade
0.7
0.7
0.8
1.0
0.8
C1220T-1/2H OR
0.9
0.9
CAUTION
• Be sure to use C1220T-1/2H (Semi-hard) pipe for more than Ø19.05 mm.
If you use C1220T-O (Soft) pipe for Ø19.05 mm, the pipe may be broken,
which can result in an injury.
75 m
Make at least one round:
It will reduce noise and vibration
30 m
h
1
• The appearance of the unit may be different from the diagram depending
on the model.
CAUTION
• After connecting the pipes with knock-out treatment, plug the space
around the pipes.
• After connecting the pipes, proceed exactly as directed in the guide to
prevent interference with the internal parts.
C1220T-O
C1220T-H
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