14
1-11. Installing Distribution Joint
(1) Refer to “HOW TO ATTACH DISTRIBUTION JOINT” enclosed with the optional distribution joint kit (CZ-P160BK2).
●
W
hen connecting a branch tubing to the indoor unit directly, it is necessary for each branch tubing to install at a positive angle with
respect to horizontal in order to prevent accumulation of refrigerant oil in stopped units. See the below chart.
B
ranch tubing system
R
estricted
Not restricted
A
B
How to install
branch tubing
When connecting branch tubing to indoor unit directly
When not connecting
branch tubing to
indoor unit directly
Gas tube
Liquid tube
Gas & liquid tubes
When connecting to A
When connecting to B
Horizontal
A
D
B
15
～
90°
Straight tubing
length over
200mm
Arrow view D
15
～
90°
15
～
30°
15
～
90°
15
～
30°
Straight tubing
length over
200mm
(Branch tubing
angle)
Horizontal
Straight tubing
length over 200mm
or
0
～
30°
(Branch tubing
angle)
Horizontal
Vertical
Upward
Vertical
Vertical
Vertical
Vertical
Downward
15
～
90°
Vertical
Straight tubing
length over
200mm
15
～
90°
Straight tubing
length over
200mm
Vertical
Vertical
Vertical
H
eader branch system (Main tubing is horizontal.)
O
utdoor
I
ndoor
I
ndoor
I
ndoor
(From 1st branch to tip
of solidly welded part)
H
orizontal line
H
orizontal line
Install at a positive angle
(15~30°)
Install at a positive angle
(15~30°)
●
B
e sure to solidly weld shut the T-joint end (marked by X in
the figure). In addition, pay attention to the insertion depth of
each connected tube so that the flow of refrigerant within the
T-joint is not impeded.
B
e sure to use a commercial available T-joint.
●
W
hen using the header joint system, do not make further
branches in the tubing.
S
olidly welded shut (X)
00_291827_2WAY_Eng.indb 14
2017/7/5 13:41:25
