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Installation Procedure
Step 5 Connecting the refrigerant pipe
Items
Maximum allowable length
Single Installation DPM Installation
Applicable outdoor unit models
AC100RXAD*G
AC120RXAD*G
AC140RXAD*G
AC100RXAD*G
AC120RXAD*G
AC140RXAD*G
Total pipe length (L1+…+Ln+1+a+b) - - 50 m 75 m
Main pipe (L1) 50 m 75 m 30 m 50 m
Max. distance among indoor units (D) - - 10 m 10 m
Max. length after branch - - 15 m 15 m
Max. height difference between
outdoor and indoor units (h1)
30 m 30 m 30 m 30 m
Max. height difference among
indoor units(h2)
- - 0.5 m 0.5 m
Max Pipe length difference among
indoor units after branch
[L2-L3 or L2-L4 or L2-L5 or a-b or
(a+L2)-(b+L4) or (a+L3)-(b+L5)]
- - 5 m 5 m
• "n" means the number of indoor unit connection of DPM.
indoor
indoor
indoor
outdoor
outdoor
outdoor
indoor
indoor
indoor
indoor
indoor
indoor
indoor
outdoor
L
1
L
1
L
2
L
2
D
D
D
D
h
2
h
2
L
3
L
3
L
4
L
4
L
5
L
1
a
b
D
L
1
L
2
L
3
h
1
h
2
h
1
h
1
h
1
n=1
n=2
n=3
n=4
• Use a joint kit that is only for DPM.
• Temper grade and minimum thickness of the refrigerant pipe
Outer diameter [mm] Minimum thickness [mm] Temper grade
ø6.35 0.7
C1220T-O
ø9.52 0.7
ø12.70 0.8
ø15.88 1.0
ø15.88 0.8
C1220T-1/2H OR C1220T-Hø19.05 0.9
ø22.23 0.9