Burr
Copper pipe
Spare reamer
Pipe cutter
)/$5,1*:25.
1) Cut the copper pipe correctly with pipe cutter. (Fig. 1, 2)
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of pipe. (Fig. 3)
• Put the end of the copper pipe to downward direction
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drop in the piping.
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4) Flaring work (Fig. 4, 5). Firmly hold copper pipe in the
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5) Check
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3-3. PIPE CONNECTION
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leakage.
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Indoor unit connection
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refrigeration oil on screw threads. Excessive tightening torque will result in damage
on the screw.
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hand.
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Pipe diameter
(mm)
Nut
(mm)
A (mm)
Tightening torque
Clutch
type tool
for R32,
R410A
Clutch type
tool for
R22
Wing nut
type tool for
R22
N•m
kgf•cm
ø6.35 (1/4”)
17
0 to 0.5
1.0 to 1.5
1.5 to 2.0
13.7 to
17.7
140 to
180
ø9.52 (3/8”)
22
34.3 to
41.2
350 to
420
ø12.7 (1/2”)
26
2.0 to 2.5
49.0 to
56.4
500 to
575
ø15.88 (5/8”)
29
73.5 to
78.4
750 to
800
Copper
pipe
Good
Tilted Uneven Burred
No good
Fig. 1
Fig. 2
Clutch type
Flaring tool
Fig. 4
Fig. 3
Smooth all
around
Even length
all around
Inside is shin-
ing without any
scratches.
Flare nut
Die
Fig. 5
Fig. 6
3. OUTDOOR UNIT INSTALLATION
Copper pipe
Wing nut type
WARNING
When installing the unit, securely connect the refriger-
ant pipes before starting the compressor.
3-1. CONNECTING WIRES FOR OUTDOOR UNIT
1) Open the service panel.
2) Loosen terminal screw, and connect indoor/outdoor unit connecting wire (A) from
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3) Firmly tighten the terminal screws to prevent them from loosening. After tightening,
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4) Connect power supply cord (K).
5) Fix indoor/outdoor unit connecting wire (A) and power supply cord (K) with the cord clamp.
6) Close the service panel securely.
• Make earth wire longer than others as picture.
• For future servicing, give extra length to the connecting wires.
• Be sure to attach each screw to its correspondent terminal when securing the cord
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Power supply cord (K)
Outdoor unit connection
Connect pipes to stop valve pipe joint of the outdoor unit in
the same manner applied for indoor unit.
• For tightening, use a torque wrench or spanner and use
the same tightening torque applied for indoor unit.
3-4. INSULATION AND TAPING
1) Cover piping joints with pipe cover.
2) For outdoor unit side, surely insulate every piping including valves.
3) Using piping tape (G), apply taping starting from the entry of outdoor unit.
• Stop the end of piping tape (G) with tape (with adhesive agent attached).
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temperature and humidity are high, wind additional commercially sold insulation to
prevent condensation.
Cord clamp
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$OZD\V¿[WKHSRZHUVXSSO\FRUG
on this side.
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7HUPLQDOEORFN
<RW25HZ, 35HZ>
Insert the end of
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rectangle hole.
Power supply
cord (K)
Indoor/outdoor
unit connecting
wire (A)
Earth wire
15 mm
35 mm
100 mm
or more
Others
15 mm
35 mm
