15
1-12. Installing Distribution Joint
(1) Refer to “HOW TO ATTACH DISTRIBUTION JOINT” enclosed with the optional distribution joint kit
(CZ-P680PH2, CZ-P1350PH2, CZ-P224BH2, CZ-P680BH2, CZ-P1350BH2).
● When 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.
Branch tubing system Restricted
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
Suction, discharge &
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°
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
Header branch system
(Main tubing is horizontal.)
Outdoor
Indoor
Indoor
Indoor
(From 1st branch to tip
of solidly welded part)
Horizontal line
Horizontal 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.
Be sure to use a commercial available T-joint.
● When using the header joint system, do not make further
branches in the tubing.
● D o not use the header joint system on the outdoor unit side.
Solidly welded shut (X)
00_341136_2WAY_Eng.indb 15 2022/9/19 9:27:16
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