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INSTALLING THE OUTDOOR UNIT
• When installing the outdoor unit, refer to
Installation Diagram".
i'..111
FLARING THE PIPE END
it,
WARNING
Incomplete flaring may result refrigerant gas leakage.
1) Cut the pipe end with a pipe cutter.
2) Remove burrs with the cut surface facing downward, so that the fillings
do not enter the pipe.
3) Put the flare nut on the pipe.
4) Flare the pipe.
5) Check that the flaring has been done correctly.
IC II
REFRIGERANT PIPING
1) To prevent gas leakage, apply refrigeration oil to the inner surface of the flare.
2) Align the centres of both flares and tighten the flare nuts 3 or 4 turns by hand. Then tighten them fully with the torque
wrenches.
• Use torque wrenches when tightening the flare nuts to prevent damage to the flare nuts and escaping gas.
0. D. 9.5mm
Gas side
0. D. 12.7mm
0. D. 15.9mm
Liquid side I O. D. 6.4mm
Cautions on Pipe Handling
1) Protect the open end of the pipe against dust and moisture.
2) All pipe bends should be as gentle as possible. Use a pipe bender for
bending.
Selection of Copper and Heat Insulation materials
When using commercial copper pipes and fittings, observe the following:
1) Insulation material : Polyethylene foam or equivalent.
Heat transfer rate - Co-efficient : 0.041 to 0.052W/m'K
2) Be sure to insulate both the gas and liquid piping and to provide insulation dimensions as below.
Piping
size
0.0.
9.5mm
Gas
0.0.
12.7mm
side
0.D.
15.9mm
Liquid
0.0.
6.4mm
side
9
OUTDOOR UNIT
"Precautions for Selecting a Location"
Flare nut
Piping size I
tightening torque tightening torque
32.7-39.9N • m
(333-407 kgf • cm)
49.5-60.3N • m
(505-615 kgf • cmJ
61.8-75.4N • m
(630-770 kgf • cm)
14.2-17.2N • m
(144-175 kgf • cm)
( 0.035 to 0.045kcal/m'h'C)
Minimum
Piping thickness
bend radius
Thickness 0.6mm
30 mm or
(C1220T-O)
more
Thickness, 0.6mm
40 mm or
(C1220T-O)
mo re
50 mm or
Thickness 0.8mm
(C1220T-O)
more
Thickness 0.6mm
30 mm or
(C1220T-O)
more
and the
c"' '"'""• at
�� Remove burrs.
Set exactly at the position shown below.
Tho" '"' ' '""" '"'" " '
must be flaw-free.
I
Valve cap
21.6-27.4N • m
(220-280 kgf • cm)
48.1-59.7N • m
(490-61 O kgf • cm)
I
21.6-27.4N • m
(220-280 kgf • cm)
1 ! :
R�in
�
,I
Thermal
Thermal
insulation
insulation size
thickness
I.D
12-15mm
I.D
14-16mm
Thickness
I.D
min.6.5mm
16-20mm
I.D
8-10mm
Table No. 8
"Outdoor Unit
[!]
Flaring
Flare tool
Conventional
\ for R41 0AIR32
flare tool
i
Clutch-type I Wing-nut type
Clutch-type
(Rigid-type) {Imperial-type)
A
0-0.Smm
1.0-1.smm
1.5-2.0mm
Check
Th o pip , aod m,st ·'' "'" ''
flared in a per1ect circle.
he
1
:: : i
� :�:
���
t
-
i
Service port cap
tightening torque
10.8-14.7N • m
(110-150 kgf • cm)
Table No. 7
i : i
Brn�to
place a cap .
�
II no flare cap is
available.cover
the flare mouth
�
with tape to keep
.
dirtor waterout �
Im
• Use separate thermal
insulation pipes for gas and
I
liquid refrigerant pipes.
Heatkisulllionri.>e�
'
�
Collll'AlncalonMI
�
��
Go,�
, a
� ;.: =
. . . .
oro�i-
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