• A place where the operation noise and discharged
air do not disturb your neighbors.
• A place which is not exposed to a strong wind.
• A place free of a leakage of combustible gases.
• A place which does not block a passage.
• When the outdoor unit is to be installed in an
elevated position, be sure to secure its feet.
• An allowable length of the connecting pipe is up
15 m. (Refer to the table of TO CHARGE
REFRIGERANT for detail.)
• An allowable height level is up to 8 m.
• A place where the drain water does not raise any
problem.
Strong
wind
Outer dia.
R410A
of copper pipe
6.35 1.5 to 2.0
Outer dia. R410A Conventional
of copper pipe tool used tool used
6.35 0 to 0.5 1.0 to 1.5
8-5-3. Refrigerant piping connection
1. Cut the pipe with a pipe cutter.
Fig. 8-5-3
2. Insert a flare nut into the pipe, and flare the pipe.
• Projection margin in flaring : A (Unit : mm)
Fig. 8-5-4
Rigid (Clutch type)
Imperial (wing nut type, conventional tool)
<Tightening connection>
Align the centers of the connecting pipes and tighten
the flare nut as far as possible with your fingers. Then
tighten the nut with a spanner and torque wrench as
shown in the figure.
CAUTION
• Do not apply excess torque.
• Otherwise, the nut may crack depending on the
conditions.
90°
Roughness Warp
Obliquity
A
Die
Pipe
FILE NO. SVM-10049
12.70 0 to 0.5 1.0 to 1.5
12.70 2.0 to 2.5
- 41 -
• A place which provides the spaces around the
outdoor unit as shown in the installation diagram
•
A place which can bear the weight of the outdoor
unit and does not allow an increase in noise level
and vibration.
of indoor and outdoor unit.
8-5. Outdoor Unit
8-5-1. Installation place
Snow protection plate
Snow protection hood
At least 50 cm
Snow accumulation line
Anchor bolts
Installation at least 50 cm
above the snow
accumulation line.
Holding frame
Front
* Do not use a double-stacked design.
with Snowfall and Cold Temperatures
8-5-2.
Precautions about Installation in Regions
• Do not use the supplied drain nipple for draining water.
Drain the water from all the drain holes directly.
• To protect the outdoor unit from snow accumulation,
install a holding frame and attach a snow protection
Hood and plate.
Fig. 8-5-1
CAUTION
1. Install the outdoor unit in a location where there
are no obstructions near its air intake or air outlet.
2. When the outdoor unit is installed in a place that
is 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 arears, install the unit to
prevent the admission of wind.
4. Installation in the following places may result in
trouble.
Do not install the unit 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 equipment.
•
•
•
•
Fig. 8-5-2
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