9
Outdoor Unit
Installing The Outdoor Unit
• When installing the outdoor unit, refer to
"Precautions for Selecting a Location"
and the
"Outdoor Unit
Installation Diagram" .
.,
.....
Flaring The Pipe End
� WARNING
c,1 o,ocily ,1
[!]
Incomplete flaring may result refrigerant gas leakage.
��Remove burrs.
Flaring
1) Cut the pipe end with a pipe cutter.
Set exactly at the position shown below.
Flare tool
Conventional
�
2) Remove burrs with the cut surface facing downward, so that the fillings
\ for R410AIR32
flare tool
Clutch-type I Wing-nut type
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.
Refrigerant Piping
Clutch-type
A o-o.smm
Check
(Rigid-type) (Imperial-type)
1.0-1.srrvn I 1.5-2.0rrvn
• .
;
Tho pip, ,od m,� bo "8oly
The flares inner sur1ace ,
11 ad .
r1ect . 1
must be flaw-free.
ar ma P8
circ e.
1
� �a��n��;: :i�t:t
e
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.
Flare nut
Valve cap
Service port cap
Piping size
ightening torque tightening torque tightening torque
32.7-39.9N • m
21.6-27.4N • m
0. D. 9.5mm
(333-407 kgf • cm)
(220-280 kgf • cm)
Gas side
0. D. 12.7mm
49.5-60.3N • m
(505-615 kgf • cm)
48.1-59.7N • m
0. D. 15.9mm
61.8-75.4N • m
(490-610 kgf • cm)
10.8-14.7N • m
(110-150 kgf • cm)
(630-770 kgf • cm)
14.2-17.2N • m
21.6-27.4N • m
Liquid side 0. D. 6.4mm
(144-175 kgf • cm)
(220-280 kgf • cm)
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
( 0.035 to 0.045kcal/m'h
°
C)
Table No. 7
,,,,,,
�·"
l:•
-
�
11I
Basureto
!
!
place a cap.
Rain
If no flare cap is
available, cover
�
thefla,emooth
�
witl1 tape to keep
dirt or water out.
2) Be sure to insulate both the gas and liquid piping and to provide insulation dimensions as below.
Piping
Minimum
Piping thickness
size
bend radius
O.D.
30
mm or
9.5mm
more
Gas
O.D.
40 mm or
(C1220T-O)
side
12.7mm
more
O.D.
50
mm or
Thickness 0.8mm
15.9mm
more
(C1220T-O)
Liquid
O.D.
30
mm or
Thickness 0.7mm
side
6.4mm
more
(C1220T-O)
Themnal
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.a
• Use separate thermal
insulation pipes for gas and
liquid refrigerant pipes.
Ga
)
p;p,
'T"°�;;;
p;pe
(o cd)
'!
Qi\
Gasp1pe
. . .
insulation/
L1qu1d pipe
\ insulation
Finishing tape Drain hose
{field supply)
Thickness 0.6mm
(C1220T-O)
Thickness 0.6mm
Summary of Contents for GTKC48UV16W
Page 20: ......
