Outdoor Unit - Daikin MTKM35UV16W Operation Manual

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
L'.t
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.
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. T hen 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
2) Be sure to insulate both the gas and liquid piping and to provide insulation dimensions as below.
Piping
size
O.D.
9.5mm
Gas O.D.
side
12.7mm
O.D.
15.9mm
Liquid
O.D.
side
6.4mm
9

Outdoor Unit

Flare nut
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
Minimum
Piping thickness
bend radius
ThicKness 0.6mm
30 mm or
(C1220T-O)
more
Thickness 0.6mm
40 mm or
more (C1220T-O)
50 mm or
Thickness 0.8mm
more (C1220T-O)
Thickness 0.6mm
30 mm or
(C1220T-O)
more
CUI exactly at
right angles.
Set xactly at th poeition shown below.
e e
1
\ fer R410A/R32
A
�
�-----Check-----�
•
The flar6s inner surrac e
must be flaw-free.
Valve cap Service port cap
tightening torque tightening torque
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"'
' '
'!l�!
Rain
o.
2
K
2 °
h C)
Thermal
Thermal
insulation
insulation size
thickness
I.D
12-15mm
I.D
14-16mm
Thickness
min.6.5mm
I.D
16-20mm
I.D
8-10mm
Table No.a
rrj1T
Remove burrs.
/IJ+ll ':::,
Flaring
Flare tool Conventional
flare tool
Cluldl-type Wing-nut type
Cluldl-type
I
(Rigid-type) (Imperial-type)
0-0.5mm 1.0-1.5mm I 1.5-2.0mm
� The Pi>& end must be """'1iy
1
rfect • I
'-flar d·
m a pe c1rc e.
'\
/
e
,
1
� �aS:n:: :t�� e
10.8-14.?N • m
(110-150 kgf • cm)
Table No. 7
�I
:::::,.
i
H oo flare cap Is
available, CXMN'
the flaremouth
with tape 10 keep
dl rt or water out �
• Use separate thermal
insulation pipes for gas and
liquid refrigerant pipes.