Toshiba RAS-05, RAS-07, Installation Manual, Page: 8 / 16

6
Drain
guide
Space for pipes
Wall
Shield pipe
Inside the room
Drain hose
Extension drain hose
Arrange the drain pipe for proper drainage from the unit.
Improper drainage can result in dew-dropping.
This air conditioner has the structure designed
to drain water collected from dew, which forms
on the back of the indoor unit, to the drain pan.
Therefore, do not store the power cord and other
parts at a height above the drain guide.
CAUTION
OUTDOOR UNIT OUTDOOR UNIT
Installation Place
• A place which provides the spaces around the outdoor unit as shown in the
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 15 m for RAS-05, 07, 10, 13BAV-E and
20 m for RAS-16BAV-E.
• The allowable height of outdoor-unit installation site is up to 12 m.
• A place where the drain water does not raise any problems
CAUTION
1. Install the outdoor unit without anything blocking the air discharging.
2. When the outdoor unit is installed in a place always exposed to strong
wind like a coast or on a high storey of a building, secure the normal fan
operation using a duct or a windshield.
3. In particularly windy areas, install the unit such as to avoid 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 sul
fi de gas
• A place where high-frequency
waves are likely to be generated
as from audio equipment, welders,
and medical equipment
Strong
wind
• 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.
Precautions about Installation in Regions
with Snowfall and Cold Temperatures
Snow protection plate
Snow protection hood
Snow accumulation line
Holding frame
At least
50 cm
Install at least 50 cm
above the snow
accumulation line.
Anchor
bolts
Front
Flare at
indoor unit side
Flare at
outdoor unit side
Flare nut Half union
Externally
threaded side Internally
threaded side
Use a wrench to secure. Use a torque wrench to tighten.
90
Obliquity Roughness Warp
CAUTION
Refrigerant Piping Connection
1. Cut the pipe with a pipe cutter.
2. Insert a fl are nut into the pipe and fl are the pipe.
• Projection margin in fl aring : A (Unit : mm)
RIDGID (clutch type)
IMPERIAL (wing nut type)
Outer dia. of copper pipe R410A
Ø6.35 1.5 to 2.0
Ø9.52 1.5 to 2.0
Ø12.70 2.0 to 2.5
Align the centers of the connecting pipes and tighten the fl are nut as far as pos-
sible with your fi ngers. Then tighten the nut with a spanner and torque wrench
as shown in the fi gure.
Tightening connection
Do not apply excess torque. Otherwise, the nut may crack depending on
the conditions.
(Unit : N·m)
Outer dia. of copper pipe Tightening torque
Ø6.35 mm 16 to 18 (1.6 to 1.8 kgf·m)
Ø9.52 mm 30 to 42 (3.0 to 4.2 kgf·m)
Ø12.70 mm 50 to 62 (5.0 to 6.2 kgf·m)
Outer dia.
of copper pipe
R410A tool used
Conventional tool
used
Ø6.35 0 to 0.5 1.0 to 1.5
Ø9.52 0 to 0.5 1.0 to 1.5
Ø12.70 0 to 0.5 1.0 to 1.5
• Tightening torque of fl are pipe connections
The operating pressure of R410A
is higher than that of R22 (approx.
1.6 times). It is therefore necessary
to
fi rmly tighten the fl are pipe
connecting sections (which connect
the indoor and outdoor units) up to the
speci
fi ed tightening torque. Incorrect
connections may cause not only a
gas leakage, but also damage to the
refrigeration cycle.
Flaring
A
Die
Pipe
2. Put water in the drain pan and make sure that the water is drained out of
doors.
3. When connecting extension drain hose, insulate the connecting part of
extension drain hose with shield pipe.