Outdoor Unit - Toshiba RAS-24SKP-ES2 Service Manual

8-5. Outdoor Unit

8-5-1. Installation place
• A place which provides the spaces around the
outdoor unit as shown in the installation diagram
of indoor and outdoor unit.
• A place which can bear the weight of the outdoor
unit and does not allow an increase in noise level
and vibration.
• 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.
8-5-2. Precautions about Installation in Regions
with Snowfall and Cold Temperatures
• 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.
* Do not use a double-stacked design.
Snow protection plate
Snow protection hood
Front
At least 50 cm
Snow accumulation line
Anchor bolts
Holding frame
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.
8-5-3. Refrigerant piping connection
1. Cut the pipe with a pipe cutter.
2. Insert a flare nut into the pipe, and flare the pipe.
Rigid (Clutch type)
Installation at least 50 cm
above the snow
of copper pipe
accumulation line.
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.
- 41 -
FILE NO. SVM-10049
Fig. 8-5-2
90°
Fig. 8-5-3
• Projection margin in flaring : A (Unit : mm)
Die
Fig. 8-5-4
Outer dia. R410A
tool used
6.35 0 to 0.5
12.70 0 to 0.5
Outer dia.
of copper pipe
6.35
12.70
CAUTION
• Do not apply excess torque.
• Otherwise, the nut may crack depending on the
conditions.
Strong
wind
Roughness Warp
Obliquity
A
Pipe
Conventional
tool used
1.0 to 1.5
1.0 to 1.5
R410A
1.5 to 2.0
2.0 to 2.5