13
1-12. Installing Distribution Joint
CAUTION
CAUTION
Pay special attention to any location, such as a basement, etc., where leaking refrigerant can
accumulate, since refrigerant gas is heavier than air.
(1) Refer to “HOW TO ATTACH DISTRIBUTION JOINT” enclosed with the optional distribution joint kit (CZ-P900PH1U,
CZ-P224BH1U, CZ-P680BH1U, CZ-P1350BH1U).
●
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
Restricted
N
ot 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
Suction tube
* In case of common use solenoid valve kit
Liquid tube / Discharge tube
Suction tube /
Discharge tube /
Liquid tube
When connecting to A
When connecting to B
Horizontal
A
D
B
15
〜
90°
Straight tubing
length over
8 in. (200mm)
Arrow view D
15
〜
90°
15
〜
30°
15
〜
90°
15
〜
30°
Straight tubing
length over
8 in. (200mm)
(Branch tubing
angle)
Horizontal
Straight tubing length
over 8 in. (200mm)
or
0
〜
30°
(Branch tubing
angle)
Horizontal
Vertical
Upward
Vertical
Vertical
Vertical
Vertical
Downward
15
〜
90°
Vertical
Straight tubing
length over
8 in. (200mm)
15
〜
90°
Straight tubing
length over
8 in. (200mm)
Vertical
Vertical
Vertical
●
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.
H
eader branch system
(M
ain tubing is horizontal
.)
O
utdoor
I
ndoor
I
ndoor
I
ndoor
(F
rom 1st branch to tip
of solidly welded part)
H
orizontal line
H
orizontal line
I
nstall at a positive angle
(15~30°)
I
nstall at a positive angle
(15~30°)
Solidly welded shut (X)
6.5 ft. (2m)
01_302412_Eng.indd 13
2018/7/4 13:30:28
