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Installing The Outdoor Unit
• When installing the outdoor unit, refer to
Installation Diagram".
WJII
Flaring The Pipe End
� 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
R efrigerant 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.
Piping size
0. D. 9.5mm
Gas side
0. D. 12.7mm
0. D. 15.9mm
Liquid side
0. 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
O.D.
9.5mm
>- -------l----- ---< Thickne ss , 0. 7mm f- --- - ---<
7
Gas
12 0
� m
side
O.D.
15.9mm
Liquid
O.D.
side
6.4mm
9
Outoor Unit
"Precautions for Selecting a Location"
Flare nut
ightening torque tightening torque
32.7-39.9N • m
(333-407 kgf • cm)
49.5-60.3N • m
(505-615 kgf • cm)
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
Minimum
Piping thickness
bend radius
30 mm or
more
40
or
(C1220T - O)
: o r::' e
50 mm or
Thickness 0.8mm
more
(C1220T-O)
Thick ness 0.6mm
30 mm or
(C1220T-O)
more
and the
� "-Remove burrs.
c"' exacto at
Set exactly at the position shown below.
�N. , ; � : ;d ,:;' � ,,I eo ;:, " !," , � ' '
Tha fla,e's laae, sorn,ca
must be flaw-free.
Valve cap
21.6-27.4N • m
(220-280 kgf • cm)
48.1-59.7N • m
( 490-610 kgf • cm)
21.6-27.4N • m
(220-280 kgf • cm)
ii!!
! !
Ral�
i i
°
C)
Thermal
Thermal
insulation
insulation size
thickness
I.D
12-15mm
14 _\-� mm
Thickness
min.6.5mm
I.D
16-20mm
I.D
8-10mm
Table No. 8
"Outdoor Unit
[ill
Flaring
Clutch-type
Wing-nut type
Cl tch-
u
type
I ( R igid-type) I {Imperial-type)
IIA I
I 1.0-1.Smm I 1.5-2.0mm
o-o.smm
I
The pq,e eod most." e-,ecty
Check
flared in a per1ect circle.
he
i� �a�:n:: ii���
-
t
Service port cap
tightening torque
10.8-14.7N • m
(110-150 kgf • cm)
Table No. 7
an
Be sureto
place a cap .
�
aofla,e�p ls
r i
vailabla, cover
heflaremouth
�
with tape to keep
irt or water out.
• Use separate thermal
insulation pipes for gas and
Gas pipe Inte r-u nit wire
liquid refrigerant pipes.
Uqold pipe
I
L
( o � d)
r
�
Gas pipe
.
.
.
0
L1qu 1d pipe
insu latio n /
\ insulation
/
Finis hing tape
Drai n hos e
( f ield supply)
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