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).
●
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.
Branch tubing system
R
estricted
Not restricted
A
B
H
ow 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°
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.)
Outdoor
Indoor
Indoor
Indoor
(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
°
)
●
Be 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.
●
W
hen using the header joint system, do not make further
branches in the tubing.
●
Do not use the header joint system on the outdoor unit side.
S
olidly welded shut (X)
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2022/9/19 9:27:16
