1-38
1
B
B
B
C
A
C
A
110
97
72
C
C
C
E
D
DE
D
72
110
97
175
135
110
97
E
E
FG
F
G
H
B
C
D
E
F
E
BCD
FGH
DCB
EF
114
72
A
A
A
CZ-P155BK1 (for Double Twin)
CZ-P680BK2 (for Twin & Double Twin)
1
2
100 35
80
80
(295)
ø9.52ø9.52ø9.52
3
4
5
6
1
ø12.7
1
2
100 80 80
300
100
ø25.4
ø15.88
ø
15.88
ø15.88
1
31
111
2
ø9.52 ø12.7
ø15.88
ø19.05
31
ø12.7
ø15.88
ø19.05
ø25.4
ø25.4
ø28.58
ø9.52
ø6.35
CZ-P3HPC2 (for simultaneous Triple)
B-
CUP3
Optional Distribution Joint Kits
CZ-P155BK1: Cooling capacity after distribution is 16.0 kW (54,600 BTU/h) or less.
CZ-P680BK2: Cooling capacity after distribution is more than 16.0 kW (54,600 BTU/h) and less than 68.0 kW (232,000 BTU/h).
CZ-P3HPC2: Cooling capacity after distribution is 28.0 kW (95,500 BTU/h) or less.
Table 1-5 Distribution Branch Size ( 1, 2, 3, 4, )
Unit: mm (in.)
Indoor Unit Type 50 Type 60 Type 71 Type 100 Type 125
Gas tube 12.7(1/2) 15.88 (5/8)
Liquid tube 6.35(1/4) 9.52 (3/8)
Table 1-6 Size of connection point on each part
(shown is inside diameter of tubing)
Size Part APart BPart CPart DPart E
mm ø19.05 ø15.88 ø12.7 ø9.52 ø6.35
Unit : mm
Distribution
Joint
Insulation
for gas tube
Distribution Joint
Insulation
for liquid tube
Unit : mm
Liquid distribution joint
for liquid tube
Gas distribution joint
for gas tube
Dowel pin
position
3 locations
Liquid-tube side tube
connector
Gas-tube side tube
connector
Thermal insulation
for liquid distribution
joints
Thermal insulation
for gas distribution
joints
Gas-tube side tube
connector
Distribution
Joint
Insulation
for liquid tube
for gas tube
Insulation
Distribution Joint
Reducing
Joint
Reducing
Joint
Table 1-7 Size of connection point on each part
(shown is inside diameter of tubing)
Size Part APart BPart CPart D
mm ø28.58 ø25.4 ø22.22 ø19.05
Size Part EPart FPart GPart H
mm ø15.88 ø12.7 ø9.52 ø6.35
Unit : mm
If the distribution joint will be cut before use, cut on the
line marked “cutting point” in the fi gure below.
Horizontal installation
Vertical installation (directed upward or downward)
NOTE
Nitrogen gas replacement required for tube
brazing
If nitrogen replacement is not done when brazing is
performed on the indoor and outdoor unit refrigerant tubing,
oxide scale will occur. This scale will clog the solenoid
valves, strainers, and other parts, leading to malfunction.
Therefore be sure to replace the air in the tubing with
nitrogen when performing brazing in order to prevent
problems from oxide scale.
I nstalling Distribution Joint Kit (for Twin &
Double-Twin) (CZ-P155BK1 & CZ-P680BK2)
For branching tubes, install 150 mm or longer (including
reducer) straight tubing up to the point where the tube
branches (or after the point where the tubes join together).
Use a tube cutter and cut at the size position that
corresponds to the fi eld-supply tube size selected based
on the total indoor unit capacity. (If the size is the same as
the tube end size, cutting is not necessary.)
If the reducer that was supplied in the package is used,
perform brazing on-site.
Do not cut in such a way that applies excessive force and
causes deformation of the tube. (This will prevent insertion
of the connecting tube.)
Cut at a position that is as far away as possible from the
dowel pin.
After cutting the tube, be sure to remove any burrs and to
fi nish the end surface correctly.
(If there is excessive crushing or indentation of the tube,
use a tube expander to expand it.)
Check that there is no dirt or other foreign substance
inside the distribution tubing.
Install the distribution tubing so that it is either horizontal
or vertical.
Use the supplied thermal insulation to insulate the
distribution tubing.
(If other insulation is used, be sure to use insulation that
can withstand temperatures of at least 120°C.)
150 mm or longer straight tubing up
Dowel pin Cutting location
Cut as far away as possible
(to ensure proper insertion
clearance for the connecting tube)
Example showing
tubing directed upward
Outdoor unit side
Horizontal line
indoor unit side
Horizontal line
Install at a positive
angle.(0°)
Sec1.indd 38 2014/11/07 10:27:58
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