Haier AV08IMVEVA Installation Manual page 19

Installation procedure
In order to avoid damage to the pipe, the size of the return bend is referred to as the drawing.
R
D
2. Allowable piping length and drop between indoor and outdoor
Outdoor unit (outdoor unit above)
Proper installatio
Oil return bend
The height of the vertical
section see schedule
requirements
R
H
L1
L25
The outdoor unit to the indoor unit length ≤220m
H
D
L4
L3
L6
L2 L9
L10
L5 L12
L14
L13
L16
L22
L15
L21
L23
The first branch pipe to the farthest indoor unit pipe
length≤90m
17
Wrong installation
Compressor oil will flow into
the lowest unit
Pipe diameter Bending radius
D
Ø19.05 ≥31
Ø22.22 ≥31
Ø25.4 ≥45
Ø28.58 ≥45
Ø31.8 ≥60
Ø38.1 ≥60
Ø41.3 ≥80
Ø44.5 ≥80
Ø50.8 ≥90
Ø54.1 ≥90
L7
L8
L11
L17
L19
L18
L20
L24
Vertical heigh
R H
≤150
≤150
≤150
≤150
≤250
≤350
≤450
≤500
≤500
≤500