Outdoor Unit; Installation Place For The Outdoor Unit; Refrigerant Piping Connection; Tightening Connection - Toshiba RAS-B10N3KV2-E Service Manual

10-4. Outdoor Unit

10-4-1. Installation place
• A place which provides the spaces around the
outdoor unit as shown in the left diagram.
• 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.
• The allowable pipe length is up to 20 m. If
the length is over 15 m, add 20 g of refrigerant
for every additional meter of the pipe length for
all models.
• The allowable height of outdoor unit installation
site is up to 10 m.
•
A place where the drain water does not raise any
problem.
CAUTION
1. Install the outdoor unit without anything blocking
the air discharging.
2. When the outdoor unit is installed in a place
exposed always to a strong wind like a coast or
on a high story of a building, secure
the normal fan operation using a duct or a wind
shield.
3. Specially in windy area, 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 as from audio equipment,
welders, and medical equipment.
Fig. 10-4-1
Strong
wind

10-4-2. Refrigerant piping connection

<Flaring>
1. Cut the pipe with a pipe cutter.
90°
2. Insert a flare nut into the pipe, and flare the pipe.
• Projection margin in flaring : A (Unit : mm)
Rigid (cluch type)
Outer dia.
of copper pipe
∅ 6.35
∅ 9.52
∅ 12.70
Imperial (wing nut type)
Outer dia. of copper pipe
∅ 6.35
CAUTION
∅ 9.52
∅ 12.70
<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.
Half union
Externally
threaded side
Use a wrench
to secure.
– –
58
FILE NO. SVM-12050
Roughness
Obliquity
Fig. 10-4-2
A
Rigid
0 to 0.5 1.0 to 1.5
0 to 0.5 1.0 to 1.5
0 to 0.5 1.0 to 1.5
A
Die
Pipe
Fig. 10-4-3
R410A
1.5 to 2.0
1.5 to 2.0
2.0 to 2.5
Flare nut
Internally
threaded side
Use a torque wrench
to secure.
Fig. 10-4-4
Warp
Imperial