3-1. CONNECTING WIRES FOR OUTDOOR UNIT
1) Remove the service panel.
2) Remove the conduit cover.
3) Attach the conduit connectors to the conduit plate with lock nuts then secure it against unit with
screws.
4) Connect the ground wires of indoor/outdoor unit connecting wire (A) and power supply cord (K)
to the TB support.
5) Loosen the terminal screws, then attach indoor/outdoor unit connecting wire (A) and power sup-
ply cord (K) from the indoor unit correctly to the terminal block. Attach the wires to the terminal
block securely so that the cores cannot be seen, and no external force affects the connecting
section of the terminal block.
6) Firmly tighten the terminal screws. After tightening, verify that the wires are tightly fastened.
7) Install the conduit cover.
8) Install the service panel securely.
3-2. FLARE CONNECTION
1) Cut the copper pipe as straight as possible with a pipe cutter. (Fig. 1, 2)
2) Remove all burrs from the cut section of the pipe, ensuring that precautions are taken to avoid
getting metal shavings into the piping. (Fig. 3)
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4) Flaring work (Fig. 4, 5). 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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Terminal block
Power supply cord (K)
Indoor/outdoor unit
connecting wire (A)
• Make ground wire a little longer than others.
(More than 4 in. [100 mm])
• For future servicing, leave some slack in the
connecting wires.
• Be sure to attach each screw to its corre-
spondent terminal when securing the cord
and/or the wire to the terminal block.
Pipe diameter
inch (mm)
B inch
(mm)
A inch (mm)
Tightening torque
Clutch
type tool
for R410A
Clutch
type tool
for R22
Wing nut
type tool
for R22
ft-lb
(kgf•cm)
N•m
ø1/4 (6.35)
21/32
(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)
10 to 13
(140 to 180) 13.7 to 17.7
ø3/8 (9.52)
7/8
(22)
25 to 30
(350 to 420) 34.3 to 41.2
ø1/2 (12.7)
1-1/32
(26)
0.08 to
0.10
(2.0 to 2.5)
36 to 42
(500 to 575) 49.0 to 56.4
ø5/8 (15.88)
1-5/32
(29)
54 to 58
(750 to 800) 73.5 to 78.4
Power supply cord (K)
L1 L2
Service panel
Lock nut
Conduit cover
Conduit plate
Conduit pipe
Grounding
terminal
Copper
pipe
Good
90°
Tilted
No good
Fig. 1
Fig. 2
Burr
Copper pipe
Spare reamer
Pipe cutter
Fig. 4
Fig. 3
Smooth all around
Even length
all around
Inside is shin-
ing without any
scratches.
Fig. 5
Fig. 6
Clutch type
Flaring tool
Wing nut type
Uneven Burred
TB support
<06/09/12>
<15/18>
Terminal block
to conduit cover
Power supply cord (K)
Indoor/outdoor unit
connecting wire (A)
TB support
Grounding
terminal
Service panel
Lock nut
Conduit cover
Conduit
plate
Conduit pipe
B
Flare nut
Die
Copper pipe
to conduit cover
Lead
wire
19/32 in.
(15 mm)
3. OUTDOOR UNIT INSTALLATION
