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3. OUTDOOR UNIT INSTALLATION
3-1. CONNECTING
WIRES FOR OUTDOOR
UNIT
1) Remove the service panel.
2) Remove the conduit cover.
3) Attach
the conduit connector
to conduit
plate with lock nut then secure
it against
unit with
SCTEWS.
/
/
;
/
/
f
19/32 in.
4) Connect ground wires of indoor/outdoor unit connecting wire (A) and
power supply cord (KK)
1-3/8 in.
(15mm)
to the TB support.
(35 mm) 7
5) Loosen the terminal screw, and attach indoor/outdoor unit connecting wire (A) from the indoor
L
unit correctly on the terminal block. Attach the wire to the terminal block securely so that its
core cannot
be seen,
and
no external force affects the connecting
section
of the terminal
block.
;
a
Power supply cord (K)
6) Firmly tighten the terminal screws. After tightening, verify that the wires are tightly fastened.
Lead wire
7) Connect power supply cord (kK).
8) Install the conduit cover.
9) Install the service panel securely.
«
Make earth wire a little longer than others.
(More than 2-3/8 in. [60 mm})
«
For future servicing,
leave some
slack in
the connecting wires.
Service panel
Terminal block
Conduit plate
.
Grounding
terminal
Connector
__ indoor/outdoor unit
)
connecting wire (A)
Power supply
cord
(K
TB support
pey
«)
L
Conduit cover
"I
Conduit cover
3-2. FLARE CONNECTION
Good
No anes
1) Cut the copper pipe as straight as possible with a pipe cutter.
(Fig. 1, 2)
90°
g
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)
ae
«Copper
~
3) Remove flare nuts attached to indoor and outdoor units, then put them on pipe.
pipe
4) Flaring work (Fig. 4, 5). Firmly hold copper pipe in the dimension shown in the table. Select A
mm from the table according to the tool you use.
Tilted
Uneven
Burred
5) Check
Fig. 4
Fig. 2
« Compare the flared work with Fig. 6.
« If flare is defective, cut off the section and repeat procedure.
Burr
Copper pipe
"
Spare reamer
'
»
SS
Pipe cutter
»
'
|
A |
Ainch (mm)
Tightening torque
Pipe
di
t
Nut
Fig. 3
Ipe
diameter |
inch
Clutch
Clutch
Wing nut
ftelb
inch (mm)
(mm) |
type tool |
type tool |
type tool
Nem
(kgf«cm)
for R410A |
for R22
for R22
g
A
0 1/4 (6.35) | 14
0.06to | ia7toiz7}
1013
(17)
0.08
(140 to 180)
Copper pipe
3/8
(1.5 to
25 to 30
Die
7
@ 3/8
(9.52)
(22)
0.04 to
2.0)
34.3 to 44.2
(350 to 420)
Clutch type
Wing nut type
0 to 0.02
0.06
Fig.
4
Flare nut
Fig.
5
qq | (0t09.5) |
(4.0 to
36 to 42
's
s
@ 1/2
(12.7)
26
1.5)
0.08 to
49.0 to 56.4
500 to 575
(26)
Cot
(
0875)
Smooth all around
ing without any
5/8
we
54 fo 58
scratches.
@ 5/8 (15.88)
(29)
2.5)
73.5 to 78.4
(750 to 800)
Even length
all around
Fig. 6
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