Precautions For Adding Refrigerant - Toshiba RAS-18J2KVSG-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 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 length of the connecting pipe.
Models RAS-18J2AVSG-E RAS-22J2AVSG-E RAS-24J2AVSG-E
Chargeless Up to 15 m
Maximum length 20 m
Additional 16 - 20 m
refrigerant charging (20 g / 1 m)
Maximum refrigerant
1.2 kg
charging
• The allowable height of outdoor unit installation site.
Models RAS-18J2AVSG-E RAS-22J2AVSG-E RAS-24J2AVSG-E
height 12 m
Maximum
• A place where the drain water does not raise any problems

Precautions for adding refrigerant

• Use a scale having a precision with at least 10 g per
index line when adding the refrigerant.
Do not use a bathroom scale or similar instrument.
CAUTION
When the outdoor unit is installed in a place where the
drain water might cause any problems, Seal the water
leakage point tightly using a silicone adhesive or caulking
compound.
Up to 15 m Up to 15 m
20 m 25 m
16 - 20 m 16 - 25 m
(20 g / 1 m) (20 g / 1 m)
1.2 kg 1.34 kg
12 m 15 m
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10-4-2. 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
Front
Snow protection hood
At least
50 cm
Snow accumulation line
Anchor
bolts
Holding frame
Fig. 10-4-1
CAUTION
1. Install the outdoor unit without anything blocking
the air discharging.
2. When the outdoor unit is installed in a place
exposed 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 wind
shield.
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 sulfide gas.
• A place where high-frequency waves are likely
to be generated as from audio equipment,
welders, and medical equipment.
Strong
Fig. 10-4-2
Install at least 50 cm
above the snow
accumulation line.
wind