9
Installation instruction
Long pipe and high drop
1. Allowable pipe length and height difference
Permissible value Piping part
Piping
length
Total length of piping (actual length) 100m L1+L2+L3+L4+a+b+c+d+e
Longest piping L 50m L1+L2+L3+L4+e
Piping length of indoor unit which is furthest to the rst branch
piping L (*)
30m L2+L3+L4+e
Drop
height
Drop height between indoor and outdoor unit
H
Up outdoor 30m ——
Under outdoor 20m ——
Drop height between indoor units h 10m ——
Permissible value Piping part
Piping
length
Total length of piping (actual length) 150m L1+L2+L3+L4+a+b+c+d+e
Longest piping L 70m L1+L2+L3+L4+e
Piping length of indoor unit which is furthest to the rst branch
piping L (*)
40m L2+L3+L4+e
Drop
height
Drop height between indoor and outdoor unit
H
Up outdoor 30m ——
Under outdoor 20m ——
Drop height between indoor units h 10m ——
Drop height between indoor and outdoor units
Drop height between
indoor units
h≤10m
Length of the longest piping after the
rst branch piping L
First branch piping
Outdoor unit
Indoor unit
Length of the longest piping L
A. Outdoor unit
Unit pipe spec and connection method (unit: mm)
Model
Gas pipe side Liquid pipe side
Diameter (mm) Connecting method Diameter (mm) Connecting method
Ø15.88
Flared joint
Ø9.52
Flared joint
Ø9.52
Ø19.05 Ø9.52
Ø19.05 Ø9.52
AWAU-YCV080-H11 type: Maximal leng
th and drop height perm
issible of refrigerant p
iping
AWAU-YCV150-H11/AWAU-YCV150-H13/AWAU-YCV180-H13
type: Maximal len
gth and drop height pe
rmissible of refrigerant
piping
Ø19.05
AWAU-YCV150-H13
AWAU-YCV180-H13
AWAU-YCV150-H11
AWAU-YCV080-H11
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