Haier AU04IFPERA - Copper Pipe Selection; Long Pipe and High Drop; Unit Pipe Spec and Connection Method; Outdoor Unit

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Long pipe and high drop
1. Allowable pipe length and height difference
Permissible
value
Piping part
Piping
length
Total length of piping (actual length) 300m L1+L2+L3+L4+a+b+c+d+e
Longest piping L Actual length 150m 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 50m ——
Under outdoor 40m ——
Drop height between indoor units h 15m ——
Maximal length and drop height permissible of refrigerant piping
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
AU04 Ø15.88
Flared joint
Ø9.52
Flared jointAU05 Ø15.88 Ø9.52
AU06 Ø15.88 Ø9.52
Copper pipe selection:
Note: If the copper pipe with outer diameter 19.05 is coil pipe, the thickness should be over 1.1.
hardness Softness Half-hardness
Outer diameter (mm) Ø6.35 Ø9.52 Ø12.7 Ø15.88 Ø19.05 Ø22.22 Ø25.24 Ø28.58
Min. thickness (mm) 0.8 0.8 1.0 1.0 1.0 1.1 1.2 1.4