11
Installation manual
Fig.5-1
Fig.5-2
ŐPP
ŐPP
CAUTION
The reduced length of the branch joint is the 0.5m of the equiva-
lent length.
The inner units should as equal as possible to be installed in the
both sides of the U-shape branch joint.
When the outdoor unit is on the top position and the difference of
level is over 20m, it is recommended that set a oil return bend
every 10m in the air pipe of the main pipe, the specification of
the oil return bend refers to Fig.5-2.
When the outdoor unit is on the low positon, H≥40m, the liquid
pipe of the main pipe need to increase one size.
The allowable length of the fist branch joint which connected to
the indoor unit should be equal to or shorter than 40m.
But when the following conditions are all meeted, the allowable
length can extended to 90m.
1.
2.
3.
4.
5.
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1
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Conditions
Examples
Need to increase the pipe diameter of the distribution pipe
Increasing size as the following
1. It is needed to increase all the pipe diameters of the the main
distribution pipe which between the first and the last branch joint
assembly. (Please change the pipe diameter at field) If the pipe
diameter of the main slave pipe is the same as the main pipe, then
it is not needed to be increased.
*
1.Level difference above 50m are not supported by default but are available on request for customized.(if the outdoor unit is above the indoor unit.)
N1
(140)
N3
(140)
N5
(140)
N6
(71)
N7
(71)
N9
(56)
N8
(140)
N2
(140)
N4
(140)
N10
(56)
A
B
D
E
F
G
H
I
C
ab
c
ef
g
h
ij
d
L
1
L2
L5
L7
L9
L8
L6
L3
L4
Outdoor unit
(one or more outdoor units)
The first branch joint
Drop height between indoor
unit and outdoor unit H≤70m
Pipe ( between the farthest indoor
unit and first branch joint) length L≤40/90
*
m
Pipe ( between the farthest indoor unit
and outdoor unit) equivalent length L≤200m
Indoor unit to intdoor unit
drop height h≤30m
Indoor unit
(
*
1.Level differences above 50 m are available on request)
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