26
3-5. Connect the Tubing
●
Use the supplied connector tubing.
Type 72 (6 Ton)
Type 120 (10 Ton)
①
④
②
③
Refrigerant
tubing
Connection
method
Use Supplied
connector
tube?
1
Suction tube
Brazing
No
2
Discharge tube
Flare
No
3
Liquid tube
Flare
No
4
Balance tube
Flare
No
Type 144 (12 Ton)
①
④
②
③
Refrigerant
tubing
Connection
method
Use Supplied
connector tube?
1
Suction tube
Brazing
Yes
ø1" ø1-1/8"
(ø25.4 ø28.58)
2
Discharge tube
Brazing
Yes
ø3/4" ø7/8"
(ø19.05 ø22.22)
3
Liquid tube
Flare
No
4
Balance tube
Flare
No
Type 96 (8 Ton)
①
④
②
③
Refrigerant
tubing
Connection
method
Use Supplied
connector
tube?
1
Suction tube
Brazing
No
2
Discharge tube
Service valve
mounted on the
unit side: Flare
counection
Tubing side: Brazing
Yes
ø5/8” (ø15.88)
Flare
↓
ø3.4” (ø19.05)
Brazing
3
Liquid tube
Flare
No
4
Balance tube
Flare
No
3-4. Prepare the Tubing
●
Material: Use C1220 phosphorous deoxidized copper as described in JIS H3300, “Copper and copper alloy seamless pipes and
tubes”.
●
Tubing size: Use the tubing size indicated in the table below.
●
When cutting the tubing, use a tube cutter, and be sure to remove any burrs.
(The same applies to distribution tubing (optional).)
●
When bending the tubes, bend each tube using a radius that is at least 4 times the outer diameter of the tube.
When bending, use sufficient care to avoid crushing or damaging the tube.
●
For flaring, use a flare tool, and be sure that flaring is performed correctly.
Unit: in. (mm)
CAUTION
CAUTION
Use sufficient caution during
preparation of the tubing.
Seal the tube ends by means
of caps or taping to prevent
dust, moisture, or other foreign
substances from entering the
tubes.
Refrigerant tubing (Existing tubing can be used.)
Tubing size (in. (mm))
Material: O
Material: O
Outer diameter
Wall thickness
Outer diameter
Wall thickness
1/4" (6.35)
0.025 (0.635)
7/8" (22.22)
0.045 (1.143)
3/8" (9.52)
0.030 (0.762)
1-1/8" (28.58)
0.050 (1.27)
1/2" (12.7)
0.035 (0.889)
1-3/8" (34.92)
0.055 (1.397)
5/8" (15.88)
0.040 (1.016)
1-5/8" (41.28)
0.060 (1.524)
3/4" (19.05)
0.042 (1.0668)
Supplied
tube
Supplied
tube
Flaring process to the tip of the supplied tubes
Remove flare nuts attached to the service valve and reuse them.
Note
: Make sure the service valve is completely closed.
If not, the gas leak will be occurred.
Use the wide area of the outer tubing surface of the supplied tubes.
• Supplied tubing outer diameter ø3/4 (ø19.05)
• Local tubing inner diameter ø3/4 (ø19.05)
In case of type 96
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