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Models
A
Pipe length
(one way)
B
Height
difference
C
Number of
bends (one way)
68=.$.$
.$
Max. 65 ft (20 m)
Max. 40 ft (12 m)
Max. 10
68=.$
Max. 100 ft (30 m)
Max. 50 ft (15 m)
Max. 10
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is positioned higher.
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-
ant (R410A) charge is required.
(The outdoor unit is charged with refrigerant for pipe length up to 25 ft. (7.5 m).)
Pipe length
Up to 25 ft (7.5 m)
No additional charge is required.
Exceeding 25 ft (7.5 m)
Additional charge is required.
(Refer to the table below.)
Refrigerant to
be added
68=.$.$.$ R]HDFKIWJP
68=.$
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Model
Pipe
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diameter
Min. wall
thickness
Insulation
thickness
Insulation
material
inch (mm)
inch (mm)
inch (mm)
68=.$
For liquid
1/4 (6.35)
0.0315 (0.8)
5/16 (8)
Heat resisting
foam plastic
VSHFL¿F
gravity
For gas
0.0315 (0.8)
5/16 (8)
68=.$
For liquid
1/4 (6.35)
0.0315 (0.8)
5/16 (8)
For gas
0.0315 (0.8)
5/16 (8)
68=.$
For liquid
1/4 (6.35)
0.0315 (0.8)
5/16 (8)
For gas
1/2 (12.7)
0.0315 (0.8)
5/16 (8)
68=.$
For liquid
1/4 (6.35)
0.0315 (0.8)
5/16 (8)
For gas
1/2 (12.7)
0.0315 (0.8)
5/16 (8)
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Caution:
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insulation may cause incorrect installation of the indoor unit, and too little insulation
may cause condensate to form.
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D
Indoor unit
E
2XWGRRUXQLW
A
Indoor unit
B
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1) Cut the cooper pipe as straight as possible with a pipe cutter.
2) Remove all burrs from the cut section of pipe, ensuring that precautions are taken
to avoid getting metal shavings into the piping.
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4) Flaring work. Firmly hold copper pipe in the dimension shown in the table. Select
A inch (mm) from the table according to the tool you use.
5) Check
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Pipe diameter
inch (mm)
Nut
inch (mm)
A inch (mm)
Tightening torque
Clutch
type tool
for R410A
Clutch
type tool
for R22
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type tool
for R22
N·m
ft·lb
(kgf·cm)
1/4 (6.35)
1/4 (17)
0 to 0.02
(0 to 0.5)
0.04 to
0.06
(1.0 to 1.5)
0.06 to
0.08
(1.5 to 2.0)
13.7 to 17.7
10 to 13
(140 to 180)
3/8 (22)
34.3 to 41.2
25 to 30
(350 to 420)
1/2 (12.7)
1/2 (26)
0.08 to
0.10
(2.0 to 2.5)
WR
36 to 42
(500 to 575)
5/8 (15.88)
73.5 to 78.4
54 to 58
(750 to 800)
90°
A
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Copper
pipe
Good
No good
Tilted
Uneven Burred
Burr
Copper pipe
Spare reamer
Pipe cutter
Flaring tool
Clutch type
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Die
Copper pipe
Flare nut
Smooth all around
Inside is shining
without any
scratches.
Even length all
around
ø1/4
ø3/8
ø3/8
ø1/2
A
B
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(12.7)
(6.35)
