– 57 –
Fig. 10-5-2
• Secure the outdoor unit with fixing bolts and nuts if
the unit is likely to be exposed to strong winds.
• Use Ø8 mm or Ø10 mm anchor bolts and nuts.
CAUTION
1. Install the outdoor unit without anything
blocking the discharging air.
2. When the outdoor unit is installed in a place
always exposed to strong winds like on the
coast or on a high story of a building, secure
the normal fan operation using a duct or a
wind shield.
3. Especially in windy areas, install the unit to
prevent the admission of wind.
4. Installation in the following places may result
in trouble.
Do not install the unit in such places.
• A place full of machine oil.
• A saline-place such as the coast.
• A place full of sulfide gas.
• A place where high-frequency waves are
likely to be generated, such as from audio
equipment, welders, and medical equip-
ment.
Strong
wind
10-5-2. Fixing Bolt Arrangement of Outdoor
Unit
Fig. 10-5-3
Suction side
Diffuser
600 mm
310 mm
10-5-3. Refrigerant Piping Connection
Flaring
1. Cut the pipe with a pipe cutter.
Fig. 10-5-4
2. Insert a flare nut into the pipe, and flare the pipe.
• Projection margin in flaring : A (Unit : mm)
Rigid (Clutch type)
Fig. 10-5-5
Imperial (Wing nut type)
• Flaring size : B (Unit : mm)
Fig. 10-5-6
• In case of flaring for R410A with the conventional
flare tool, pull it out approx. 0.5 mm more than that
of R22 to adjust to the specified flare size.
The copper pipe gauge is useful for adjusting
projection margin size.
90˚
Obliquity
Roughness
Warp
Die
Pipe
A
B
Outer dia. of
copper pipe
6.35
9.52
12.7
R410A
tool used
0 to 0.5
0 to 0.5
0 to 0.5
Conventional
tool used
1.0 to 1.5
1.0 to 1.5
1.0 to 1.5
Outer dia. of
copper pipe
6.35
9.52
12.7
R410A
1.5 to 2.0
1.5 to 2.0
2.0 to 2.5
+0
–0.4
Outer dia. of copper pipe
6.35
9.52
12.7
B
R410A
R22
9.1
9.0
13.2
13.0
16.6
16.2
Summary of Contents for RAS-3M23GACV-E
Page 99: ... 99 MCC 1438 ...
Page 100: ... 100 MCC 818 ...
